feat: add proforma customer change evaluation utility

- Implemented `evaluateProformaCustomerChange` function to assess changes in customer details for proforma invoices. - Introduced types for customer change details, blockers, field differences, and fiscal targets. - Added utility functions for normalizing text and formatting recipient information. test: add unit tests for customer payment resolver - Created tests for `CustomerPaymentResolver` to validate payment term retrieval and handling of inactive terms. - Ensured proper behavior when clearing payment terms and handling non-existent terms. test: add unit tests for customer default payment term resolver - Developed tests for `CustomerDefaultPaymentTermResolver` to verify default payment term resolution logic. - Included scenarios for creating customers with and without explicit payment term IDs. feat: implement customer default payment term resolver - Created `CustomerDefaultPaymentTermResolver` to manage default payment term resolution during customer creation. - Integrated with company finder and payment resolver services. test: add unit tests for create customer use case - Implemented tests for `CreateCustomerUseCase` to ensure correct handling of payment term IDs during customer creation. - Validated behavior when no explicit payment term ID is provided. test: add unit tests for update customer use case - Developed tests for `UpdateCustomerUseCase` to verify payment term handling during customer updates. - Ensured that inactive payment terms are not assigned and that explicit null values are respected. feat: add dependency injection for customer company services - Implemented DI for customer company dependencies to facilitate service resolution. test: add tests for customer create data utility - Created tests for `buildCustomerCreateData` to validate payment term handling based on user input.
2026-08-17 11:25:34 +02:00 · 2026-08-17 11:25:34 +02:00 · cf07de4836
commit cf07de4836
parent ee48b19610
192 changed files with 7586 additions and 216 deletions
--- a/AGENTS.md
+++ b/AGENTS.md
@ -116,6 +116,19 @@ Documentar mediante TSDoc las APIs públicas cuando aporten información sobre:

 Después de un refactor, actualizar o eliminar los comentarios que hayan quedado obsoletos.

+La documentación del proyecto debe redactarse en castellano.
+
+Reglas de estilo para documentación:
+
+- usar lenguaje claro;
+- evitar redacción excesivamente técnica cuando no sea necesaria;
+- usar frases directas;
+- evitar frases rebuscadas, largas o ambiguas;
+- priorizar explicar qué hace el sistema, por qué existe una regla y qué comportamiento debe esperar el usuario o el desarrollador;
+- usar términos técnicos cuando sean necesarios para ser precisos, pero explicarlos de forma sencilla;
+- no convertir la documentación en una transcripción del código;
+- evitar párrafos densos si una explicación breve y directa es suficiente.
+
 ## Disciplina de cambios

 - Realizar cambios incrementales.
--- a/apps/web/package.json
+++ b/apps/web/package.json
@ -32,6 +32,7 @@
    "@erp/auth": "workspace:*",
    "@erp/core": "workspace:*",
    "@erp/catalogs": "workspace:*",
+    "@erp/companies": "workspace:*",
    "@erp/customer-invoices": "workspace:*",
    "@erp/customers": "workspace:*",
    "@erp/identity": "workspace:*",
--- a/apps/web/src/register-modules.tsx
+++ b/apps/web/src/register-modules.tsx
@ -1,4 +1,5 @@
 import { CatalogsModuleManifest } from "@erp/catalogs/client";
+import { CompaniesModuleManifest } from "@erp/companies/client";
 import CoreModuleManifest, { type IModuleClient } from "@erp/core/client";
 import { CustomerInvoicesModuleManifest } from "@erp/customer-invoices/client";
 import { CustomersModuleManifest } from "@erp/customers/client";
@ -7,6 +8,7 @@ import { IdentityModuleManifest } from "@erp/identity/client";
 export const modules: IModuleClient[] = [
  IdentityModuleManifest,
  CoreModuleManifest,
+  CompaniesModuleManifest,
  CatalogsModuleManifest,
  CustomersModuleManifest,
  CustomerInvoicesModuleManifest,
--- a/docs/README.md
+++ b/docs/README.md
@ -31,6 +31,7 @@ Este directorio reúne la documentación técnica, operativa y de apoyo del ERP.
 #### Customer invoices y proformas

 - [Índice de `customer-invoices`](./customer-invoices/README.md)
+- [Plazos de pago](./catalogs/payment-terms.md)
 - [Diseño backend del perfil VeriFactu empresarial](./customer-invoices/settings/verifactu-company-profile-backend-design.md)
 - [Diseño frontend de Settings para VeriFactu](./customer-invoices/settings/frontend-erp-settings-verifactu-design.md)
 - [Contrato de series de proformas](./customer-invoices/proforma-series-contract.md)
--- a/docs/catalogs/payment-terms.md
+++ b/docs/catalogs/payment-terms.md
@ -0,0 +1,494 @@
+# Plazos de pago
+
+## Objetivo
+
+Este documento resume cómo funciona `Payment Terms` en el ERP y qué reglas debe respetar cada módulo.
+
+La cadena funcional final es:
+
+```text
+Company.defaultPaymentTermId
+        ↓ valor inicial
+Customer.paymentTermId
+        ↓ valor inicial
+Proforma.paymentTermId
+        ↓ snapshot al emitir
+IssuedInvoice.paymentTerm
+```
+
+## Modelo general
+
+`PaymentTerm` define una plantilla de vencimientos.
+
+Sus `dueRules` describen la distribución teórica del plazo, por ejemplo:
+
+- 100% a 30 días
+- 50% contado y 50% a 30 días
+
+Estas reglas no crean todavía vencimientos reales, cuotas monetarias ni estado de cobro. Eso queda fuera de alcance hasta un futuro módulo de pagos y cobros.
+
+## Referencia viva y snapshot
+
+| Entidad | Modelo |
+|---|---|
+| Company | referencia viva |
+| Customer | referencia viva |
+| Proforma | referencia viva |
+| Issued Invoice | snapshot histórico |
+
+La diferencia es simple:
+
+- Company, Customer y Proforma siguen usando configuración viva.
+- Issued Invoice debe conservar exactamente lo que se emitió.
+
+## Empresa
+
+`Company` tiene:
+
+```ts
+defaultPaymentTermId: string | null
+```
+
+Es una referencia viva al catálogo de `Payment Terms`.
+
+Reglas:
+
+- puede ser `null`;
+- puede apuntar a un `PaymentTerm` activo de la misma empresa;
+- no puede apuntar a otra empresa;
+- `isSystem` está permitido.
+
+Cambiar el default de Company:
+
+- no modifica Customers existentes;
+- no modifica Proformas existentes.
+
+Solo afecta a futuros valores iniciales.
+
+### Desactivación del default
+
+Si un `PaymentTerm` está configurado como `Company.defaultPaymentTermId`, no puede desactivarse.
+
+Antes hay que:
+
+- cambiar el default;
+- o limpiarlo.
+
+Esto evita que la empresa conserve un default que ya no podría reutilizar en nuevas asignaciones.
+
+## Clientes
+
+`Customer` tiene:
+
+```ts
+paymentTermId: string | null
+```
+
+Es una referencia viva propia.
+
+### Create
+
+Semántica:
+
+- campo omitido o `undefined` -> aplicar `Company.defaultPaymentTermId`;
+- `null` explícito -> crear el Customer sin plazo;
+- `id` -> usar ese `PaymentTerm` si existe, pertenece a la misma empresa y está activo.
+
+Una vez creado el Customer, su `paymentTermId` pasa a ser propio.
+
+Cambiar después el default de Company no modifica ese Customer.
+
+### Update
+
+Semántica:
+
+- `undefined` -> no cambiar;
+- `null` -> limpiar;
+- `id` -> asignar si es activo y de la misma empresa.
+
+### Inactivos
+
+Si un `PaymentTerm` ya asignado al Customer se desactiva después:
+
+- el Customer puede conservarlo;
+- no puede volver a seleccionarse como nueva asignación.
+
+### Quick create
+
+El quick create no necesita pedir plazo de pago al usuario.
+
+Si no envía un valor explícito, el backend aplica la misma regla que en el alta completa:
+
+```text
+Company.defaultPaymentTermId
+```
+
+No debe haber reglas distintas entre:
+
+- create completo;
+- quick create;
+- API directa.
+
+## Proformas
+
+`Proforma.paymentTermId` es una referencia viva.
+
+No es un snapshot.
+
+Mientras la Proforma no se haya emitido, cualquier cambio posterior en la definición del catálogo afecta a la lectura actual de ese plazo.
+
+### Create
+
+Prioridad de valor inicial:
+
+1. `Customer.paymentTermId`
+2. `Company.defaultPaymentTermId`
+3. `null`
+
+Reglas:
+
+- si el usuario selecciona manualmente otro plazo, ese valor prevalece;
+- `null` explícito significa “sin plazo de pago”;
+- una selección manual de `null` no debe reactivar después un default automático.
+
+### Update
+
+Semántica:
+
+- `undefined` -> no cambiar;
+- `null` -> limpiar;
+- `id` -> nueva asignación válida.
+
+Si la Proforma ya tenía un `PaymentTerm` que luego quedó inactivo:
+
+- puede conservarlo;
+- puede emitirse;
+- no pueden elegirse nuevos inactivos.
+
+## Cambio de Customer en una Proforma
+
+Cambiar el Customer de una Proforma existente siempre requiere confirmación.
+
+No basta con cambiar `customerId`. Antes hay que cargar el Customer completo y evaluar compatibilidad.
+
+### Moneda
+
+Si:
+
+```text
+newCustomer.currencyCode !== proforma.currencyCode
+```
+
+el cambio se bloquea.
+
+No se convierte moneda ni se reinterpretan importes.
+
+### Idioma
+
+Si:
+
+```text
+newCustomer.languageCode !== proforma.languageCode
+```
+
+el cambio también se bloquea.
+
+Idioma y moneda se consideran características estructurales del documento.
+
+### Estados del modal
+
+Incompatible:
+
+- no puede confirmarse;
+- debe informarse del motivo.
+
+Compatible:
+
+- informa qué condiciones se adaptarán;
+- informa qué valores se conservarán.
+
+### Plazo de pago al cambiar Customer
+
+Política:
+
+```text
+REFRESH_IF_NOT_OVERRIDDEN
+```
+
+Si el usuario no lo modificó manualmente:
+
+```text
+newCustomer.paymentTermId
+-> Company.defaultPaymentTermId
+-> null
+```
+
+Si lo modificó manualmente:
+
+- se conserva el valor actual.
+
+### Forma de pago al cambiar Customer
+
+La forma de pago usa la misma política:
+
+```text
+REFRESH_IF_NOT_OVERRIDDEN
+```
+
+No se añade un default de Company para `PaymentMethod` porque esa regla no existe en este flujo.
+
+### Dirty y override manual
+
+Hay dos conceptos distintos:
+
+- cambio pendiente de guardar;
+- override manual.
+
+Ejemplo:
+
+- Customer A -> plazo 30 días
+- cambio a Customer B -> se adapta automáticamente a 60 días
+
+Ese cambio:
+
+- debe guardarse;
+- no cuenta como override manual.
+
+Si luego cambia a Customer C, puede volver a adaptarse.
+
+En cambio, si el usuario selecciona manualmente “Contado”:
+
+- sí existe override manual;
+- futuros cambios de Customer no deben sobrescribir ese valor.
+
+La misma explicación aplica a:
+
+- `paymentTermId`;
+- `paymentMethodId`.
+
+### Fiscalidad
+
+La fiscalidad no se cambia silenciosamente.
+
+Si el nuevo Customer tiene una configuración fiscal distinta:
+
+- el modal debe advertirlo;
+- el usuario debe confirmarlo;
+- al confirmar, se adapta la configuración fiscal;
+- se recalculan impuestos y totales con la infraestructura fiscal existente.
+
+La existencia de líneas no bloquea por sí sola el cambio.
+
+### Recipient
+
+Si el cambio de Customer se confirma, el `recipient` snapshot de la Proforma siempre se refresca con el nuevo Customer.
+
+Nunca debe quedar un documento con:
+
+```text
+customerId = Customer B
+recipient = Customer A
+```
+
+El preview y el PDF usan ese snapshot documental.
+
+## Duplicación de Proformas
+
+Duplicar una Proforma crea un documento nuevo. Por eso no puede reutilizar una nueva asignación inactiva solo porque el original la conservaba.
+
+### Original con Payment Term activo
+
+- se copia el mismo `paymentTermId`.
+
+### Original con Payment Term inactivo
+
+No se copia como nueva asignación.
+
+Se resuelve así:
+
+1. `Customer.paymentTermId`, solo si está activo;
+2. `Company.defaultPaymentTermId`, solo si está activo;
+3. `null`.
+
+Reglas adicionales:
+
+- si el Customer tiene un término inactivo, se ignora;
+- si la Company tiene por datos legacy un default inactivo, no se usa;
+- la duplicación no falla por esa inconsistencia legacy.
+
+### Feedback de duplicación
+
+Si el plazo original estaba inactivo y hubo que sustituirlo o eliminarlo, el usuario recibe feedback después de duplicar.
+
+La respuesta expone metadata funcional equivalente a:
+
+```yaml
+payment_term_adaptation:
+  null
+  o
+  {
+    source: "inactive_original",
+    resolution: "customer" | "company" | "none"
+  }
+```
+
+La intención de esa metadata es explicar si el sistema:
+
+- conservó el mismo plazo;
+- usó el del Customer;
+- usó el default de Company;
+- o creó la nueva Proforma sin plazo.
+
+## Facturas emitidas
+
+Issued Invoice no mantiene una referencia viva para interpretar el plazo.
+
+Al emitir una Proforma, el sistema guarda un snapshot histórico.
+
+Shape conceptual:
+
+```ts
+paymentTerm = {
+  sourceId,
+  name,
+  description,
+  dueRules
+}
+```
+
+### Qué se conserva
+
+- `payment_term_id` para trazabilidad;
+- `payment_term_name` como snapshot;
+- `payment_term_description` como snapshot;
+- `payment_term_snapshot_json` con las reglas congeladas.
+
+Los porcentajes conservan precisión escalada. No se convierten a `float` para persistir el histórico.
+
+### Inmutabilidad histórica
+
+Ejemplo:
+
+- una factura se emite con “30 días” y 100% a 30 días;
+- después el catálogo cambia a “30 / 60 días” con 50% / 50%.
+
+La factura emitida sigue mostrando:
+
+- “30 días”;
+- 100% a 30 días.
+
+El detail y el reporting de Issued Invoice no consultan el catálogo vivo para reconstruir ese plazo.
+
+### Payment Term inactivo en emisión
+
+Si una Proforma ya tenía asignado un `PaymentTerm` y después se desactiva:
+
+- la Proforma puede emitirse.
+
+La inactividad impide nuevas asignaciones. No invalida una referencia ya existente en la Proforma.
+
+### Referencia perdida en emisión
+
+Si la Proforma tiene `paymentTermId` pero al emitir no puede resolverse dentro de la misma empresa:
+
+- la emisión falla.
+
+No se crea una factura sin snapshot de forma silenciosa y tampoco se usa un fallback nuevo desde Customer o Company.
+
+## Activos e inactivos
+
+| Contexto | Puede conservar inactivo | Puede asignar inactivo |
+|---|---:|---:|
+| Company default | NO | NO |
+| Customer | SÍ | NO |
+| Proforma | SÍ | NO |
+| Issued Invoice | snapshot histórico | N/A |
+
+Nota:
+
+`Company.defaultPaymentTermId` no puede quedar inactivo porque la desactivación se bloquea.
+
+## Aislamiento por empresa
+
+Toda nueva asignación o resolución debe quedar limitada a la empresa activa.
+
+Aplica a:
+
+- Company default;
+- Customer create;
+- Customer update;
+- Proforma create;
+- Proforma update;
+- emisión;
+- duplicación.
+
+## isSystem
+
+`isSystem` afecta a la gestión del catálogo.
+
+No impide usar un `PaymentTerm` en:
+
+- Company default;
+- Customer;
+- Proforma;
+- emisión
+
+si el término es válido para esa operación.
+
+## Reporting
+
+En reporting:
+
+- Proforma usa el `PaymentTerm` vivo;
+- Issued Invoice usa el snapshot histórico.
+
+Además, para seleccionar templates FastReport:
+
+```text
+es-ES -> es
+```
+
+## Qué no está incluido todavía
+
+Este feature no implementa todavía:
+
+- `dueDate` real;
+- calendario de cobros;
+- cuotas monetarias;
+- estado pagado o pendiente;
+- pagos parciales;
+- conciliación.
+
+No debe confundirse `dueRules` de `PaymentTerm` con vencimientos reales de una factura.
+
+## Ejemplos funcionales
+
+### Ejemplo 1: Customer sin plazo
+
+- Company default = 30 días
+- Customer create no envía `paymentTermId`
+
+Resultado:
+
+- el Customer nace con 30 días.
+
+### Ejemplo 2: Customer sin plazo explícito
+
+- Company default = 30 días
+- Customer create envía `paymentTermId = null`
+
+Resultado:
+
+- el Customer nace sin plazo.
+
+### Ejemplo 3: Proforma con override manual
+
+- Customer A = 30 días
+- cambio a Customer B = 60 días
+- el sistema adapta automáticamente a 60 días
+- el usuario elige manualmente “Contado”
+- cambio a Customer C
+
+Resultado:
+
+- la Proforma conserva “Contado”.
--- a/docs/companies/sql/add-company-default-payment-term.sql
+++ b/docs/companies/sql/add-company-default-payment-term.sql
@ -0,0 +1,24 @@
+-- DDL incremental para introducir el plazo de pago por defecto de Company.
+-- Mantiene la referencia como valor vivo y evita forzar FKs cross-module.
+-- Ejecutar solo en una BD de desarrollo segura o mediante procedimiento controlado.
+-- No ejecutar automaticamente en produccion.
+
+ALTER TABLE companies
+ADD COLUMN default_payment_term_id CHAR(36) NULL AFTER website;
+
+ALTER TABLE companies
+ADD KEY idx_companies_default_payment_term (default_payment_term_id);
+
+-- Validacion minima posterior a la DDL.
+-- SELECT column_name
+-- FROM information_schema.columns
+-- WHERE table_schema = DATABASE()
+--   AND table_name = 'companies'
+--   AND column_name = 'default_payment_term_id';
+--
+-- SELECT index_name, GROUP_CONCAT(column_name ORDER BY seq_in_index) AS indexed_columns
+-- FROM information_schema.statistics
+-- WHERE table_schema = DATABASE()
+--   AND table_name = 'companies'
+--   AND index_name = 'idx_companies_default_payment_term'
+-- GROUP BY index_name;
--- a/docs/customer-invoices/README.md
+++ b/docs/customer-invoices/README.md
@ -6,6 +6,7 @@

 ### Contratos funcionales y de transporte

+- [Plazos de pago](../catalogs/payment-terms.md)
 - [Diseño backend del perfil VeriFactu empresarial](./settings/verifactu-company-profile-backend-design.md)
 - [Contrato de series de proformas](./proforma-series-contract.md)
 - [Contrato de create de proformas](./proforma-create-contract.md)
--- a/docs/customer-invoices/proforma-create-contract.md
+++ b/docs/customer-invoices/proforma-create-contract.md
@ -4,6 +4,10 @@

 Definir la semantica correcta de `create proforma` como creacion de cabecera inicial y separarla del calculo fiscal real que depende de lineas valoradas.

+Para la semántica vigente de `payment_term_id`, herencia desde Company o Customer y diferencia entre referencia viva y snapshot, usar como fuente principal:
+
+- [Plazos de pago](../catalogs/payment-terms.md)
+
 ## Regla principal

 `tax_regime_code` no es un impuesto aplicado.
@ -63,6 +67,12 @@ Notas:
 - no se usan defaults ocultos en Zod para disfrazar la intencion del request
 - si no se informa `tax_config`, el backend resuelve defaults iniciales y los persiste
 - si el cliente cambia después, la proforma conserva su `tax_config` persistido
+- `payment_term_id` sigue la prioridad vigente:
+  - `Customer.paymentTermId`
+  - `Company.defaultPaymentTermId`
+  - `null`
+- `payment_term_id = null` significa “sin plazo de pago”
+- una selección manual de `payment_term_id = null` no debe volver a activar un default después

 ## Response esperada al crear sin lineas

@ -149,7 +159,6 @@ Si devuelve filas:

 ## Pendientes conocidos

- `payment_term_id` aparece ya en contratos de transporte, pero el dominio/snapshot de proformas sigue sin soporte funcional completo en esta fase
 - no se introduce un motor fiscal nuevo en este ajuste
 ## Archivado

--- a/docs/customer-invoices/proforma-duplicate-contract.md
+++ b/docs/customer-invoices/proforma-duplicate-contract.md
@ -14,15 +14,38 @@
 - Se intenta reutilizar la misma serie documental del origen si sigue activa; si no, se usa la serie por defecto de `document_type=proforma`.
 - `target_invoice_series_code` solo se conserva si sigue siendo una serie activa de `issued_invoice`; si no, pasa a `NULL`.
 - Se copian datos comerciales y fiscales del origen.
+- Si el `PaymentTerm` original sigue activo, se copia el mismo `paymentTermId`.
+- Si el `PaymentTerm` original está inactivo, no se reutiliza como nueva asignación. El duplicado resuelve:
+  1. `Customer.paymentTermId`, solo si está activo
+  2. `Company.defaultPaymentTermId`, solo si está activo
+  3. `null`
+- Si el Customer tiene un plazo inactivo, se ignora para esta nueva asignación.
+- Si Company tiene por datos legacy un default inactivo, no se usa y el flujo cae a `null`.
 - Se copian las líneas con nuevos IDs y se recalculan impuestos y totales con el motor actual.

+Fuente funcional principal para `Payment Terms`:
+
+- [Plazos de pago](../catalogs/payment-terms.md)
+
 ## Response

 - `201 Created`
 - Devuelve el snapshot completo de la nueva proforma.
+- Si el plazo de pago original estaba inactivo y hubo adaptación, la respuesta incluye metadata funcional equivalente a:
+
+```yaml
+payment_term_adaptation:
+  null
+  o
+  {
+    source: "inactive_original",
+    resolution: "customer" | "company" | "none"
+  }
+```

 ## UI

 - Acción de fila `Duplicar` en `/proformas` y `/proformas/archived`.
 - No muestra `Duplicar` en `/proformas/deleted`.
 - Tras duplicar redirige a `/proformas/:id/edit`.
+- Si el plazo original estaba inactivo y fue sustituido o eliminado, la UI informa del ajuste después de duplicar.
--- a/docs/customer-invoices/proformas-reports.md
+++ b/docs/customer-invoices/proformas-reports.md
@ -283,6 +283,21 @@ Prioridad funcional deseada:

 No debe repetirse la incoherencia anterior entre `languageCode` y `locale`.

+Regla práctica de templates FastReport en el estado actual:
+
+```text
+es-ES -> es
+```
+
+Sobre `Payment Terms`:
+
+- la Proforma usa el plazo vivo actual;
+- la Issued Invoice usa el snapshot histórico emitido.
+
+Fuente funcional principal:
+
+- [Plazos de pago](../catalogs/payment-terms.md)
+
 ## Ficheros principales

 Rutas y controllers:
--- a/docs/customer-invoices/split-proformas-issued-invoices-migration.md
+++ b/docs/customer-invoices/split-proformas-issued-invoices-migration.md
@ -7,6 +7,7 @@ No describe el runtime minimo vigente por si solo; la fuente operativa actual pa
 - `docs/customer-invoices/proforma-series-contract.md`
 - `docs/customer-invoices/proforma-create-contract.md`
 - `docs/customer-invoices/proforma-tax-config.md`
+- `docs/catalogs/payment-terms.md`

 Estado: diseno tecnico / fases 1A-1D + 2A-2B  
 Estado del backend: persistencia V2 activada; integracion con `document-series` activa para numeracion nueva; sin ejecucion confirmada de migracion DB
@ -46,7 +47,7 @@ Preparar el esquema fisico para separar:
 - Existen repositorios Sequelize V2 listos para convivir con los repositorios legacy.
 - El wiring activo legacy no se ha sustituido todavia.
 - El dominio/application sigue arrastrando naming legacy en algunos contratos (`series`, `invoiceNumber`, `linkedProformaId`); la traduccion queda encapsulada en Infrastructure V2.
- `payment_term` sigue sin soporte real en el dominio actual de customer invoices; en persistencia V2 queda preparado pero no conectado funcionalmente.
+- Esta afirmación quedó obsoleta. El runtime actual ya soporta `payment_term` en Company, Customer, Proforma e Issued Invoice según `docs/catalogs/payment-terms.md`.

 ## Estado de fase 1C

--- a/docs/customers/customer-selection-and-quick-create.md
+++ b/docs/customers/customer-selection-and-quick-create.md
@ -251,6 +251,26 @@ useCustomerSelectionFlow

 ## Detalle de `quick-create-customer`

+## Default de plazo de pago
+
+La alta rápida no necesita pedir el plazo de pago al usuario.
+
+Si no envía un valor explícito, el backend aplica la misma regla que en el alta completa:
+
+```text
+Company.defaultPaymentTermId
+```
+
+No debe haber diferencias entre:
+
+- create completo;
+- quick create;
+- API directa.
+
+Fuente funcional principal:
+
+- [Plazos de pago](../catalogs/payment-terms.md)
+
 ### Formulario reducido

 La alta rápida no intenta sustituir al CRUD completo de `customers`.
--- a/modules/catalogs/src/api/application/payment-terms/di/payment-term-status-changer.di.ts
+++ b/modules/catalogs/src/api/application/payment-terms/di/payment-term-status-changer.di.ts
@ -1,10 +1,20 @@
+import type { UniqueID } from "@repo/rdx-ddd";
+import type { Result } from "@repo/rdx-utils";
+
 import type { IPaymentTermRepository } from "../repositories";
 import { type IPaymentTermStatusChanger, PaymentTermStatusChanger } from "../services";

 export const buildPaymentTermStatusChanger = (params: {
  repository: IPaymentTermRepository;
+  companyDefaultUsageChecker?: {
+    isUsedAsCompanyDefault(params: {
+      companyId: UniqueID;
+      paymentTermId: UniqueID;
+      transaction?: unknown;
+    }): Promise<Result<boolean, Error>>;
+  };
 }): IPaymentTermStatusChanger => {
-  const { repository } = params;
+  const { repository, companyDefaultUsageChecker } = params;

-  return new PaymentTermStatusChanger(repository);
+  return new PaymentTermStatusChanger({ repository, companyDefaultUsageChecker });
 };
--- a/modules/catalogs/src/api/application/payment-terms/public/mappers/payment-term-public-model.mapper.ts
+++ b/modules/catalogs/src/api/application/payment-terms/public/mappers/payment-term-public-model.mapper.ts
@ -9,6 +9,10 @@ export class PaymentTermPublicModelMapper {
      name: paymentTerm.name.toPrimitive(),
      description: paymentTerm.description.map((value) => value.toPrimitive()),
      isActive: paymentTerm.isActive,
+      dueRules: paymentTerm.dueRules.getAll().map((rule) => ({
+        dueDays: String(rule.dueDays.toPrimitive()),
+        percentage: rule.percentage.toPrimitive(),
+      })),
    };
  }
 }
--- a/modules/catalogs/src/api/application/payment-terms/public/models/payment-term-public.model.ts
+++ b/modules/catalogs/src/api/application/payment-terms/public/models/payment-term-public.model.ts
@ -9,4 +9,11 @@ export interface PaymentTermPublicModel {
  description: Maybe<string>;

  isActive: boolean;
+  dueRules: Array<{
+    dueDays: string;
+    percentage: {
+      value: string;
+      scale: number;
+    };
+  }>;
 }
--- a/modules/catalogs/src/api/application/payment-terms/services/tests/payment-term-services.test.ts
+++ b/modules/catalogs/src/api/application/payment-terms/services/tests/payment-term-services.test.ts
@ -12,6 +12,7 @@ import { PaymentTermPercentage } from "../../../../domain/payment-terms/payment-
 import type { PaymentTermSummary } from "../../models/payment-term-summary.model";
 import type { IPaymentTermRepository } from "../../repositories/payment-term-repository.interface";
 import { PaymentTermDeleter } from "../payment-term-deleter.service";
+import { PaymentTermStatusChanger } from "../payment-term-status-changer.service";

 class InMemoryPaymentTermRepository implements IPaymentTermRepository {
  private readonly items = new Map<string, PaymentTerm>();
@ -194,4 +195,46 @@ describe("Payment term services", () => {

    assert.equal(result.isFailure, true);
  });
+
+  test("disable permite desactivar un payment term que no es default de company", async () => {
+    const repository = new InMemoryPaymentTermRepository();
+    const paymentTerm = createPaymentTerm();
+    await repository.create(paymentTerm);
+
+    const changer = new PaymentTermStatusChanger({
+      repository,
+      companyDefaultUsageChecker: {
+        isUsedAsCompanyDefault: async () => Result.ok(false),
+      },
+    });
+
+    const result = await changer.changeStatus({
+      paymentTerm,
+      action: "disable",
+    });
+
+    assert.equal(result.isSuccess, true);
+    assert.equal(result.data.isActive, false);
+  });
+
+  test("disable rechaza desactivar un payment term usado como default de company", async () => {
+    const repository = new InMemoryPaymentTermRepository();
+    const paymentTerm = createPaymentTerm();
+    await repository.create(paymentTerm);
+
+    const changer = new PaymentTermStatusChanger({
+      repository,
+      companyDefaultUsageChecker: {
+        isUsedAsCompanyDefault: async () => Result.ok(true),
+      },
+    });
+
+    const result = await changer.changeStatus({
+      paymentTerm,
+      action: "disable",
+    });
+
+    assert.equal(result.isFailure, true);
+    assert.match(result.error.message, /plazo por defecto/i);
+  });
 });
--- a/modules/catalogs/src/api/application/payment-terms/services/payment-term-status-changer.service.ts
+++ b/modules/catalogs/src/api/application/payment-terms/services/payment-term-status-changer.service.ts
@ -1,6 +1,7 @@
 import { Result } from "@repo/rdx-utils";

 import type { PaymentTerm } from "../../../domain";
+import { PaymentTermCannotBeDisabledError } from "../../../domain";
 import type { IPaymentTermRepository } from "../repositories";

 export type PaymentTermStatusChangeAction = "enable" | "disable";
@ -14,7 +15,18 @@ export interface IPaymentTermStatusChanger {
 }

 export class PaymentTermStatusChanger implements IPaymentTermStatusChanger {
-  public constructor(private readonly repository: IPaymentTermRepository) {}
+  public constructor(
+    private readonly deps: {
+      repository: IPaymentTermRepository;
+      companyDefaultUsageChecker?: {
+        isUsedAsCompanyDefault(params: {
+          companyId: PaymentTerm["companyId"];
+          paymentTermId: PaymentTerm["id"];
+          transaction?: unknown;
+        }): Promise<Result<boolean, Error>>;
+      };
+    }
+  ) {}

  public async changeStatus(params: {
    paymentTerm: PaymentTerm;
@ -23,6 +35,27 @@ export class PaymentTermStatusChanger implements IPaymentTermStatusChanger {
  }): Promise<Result<PaymentTerm, Error>> {
    const { paymentTerm, action, transaction } = params;

+    if (action === "disable" && this.deps.companyDefaultUsageChecker) {
+      const companyDefaultUsageResult =
+        await this.deps.companyDefaultUsageChecker.isUsedAsCompanyDefault({
+          companyId: paymentTerm.companyId,
+          paymentTermId: paymentTerm.id,
+          transaction,
+        });
+
+      if (companyDefaultUsageResult.isFailure) {
+        return Result.fail(companyDefaultUsageResult.error);
+      }
+
+      if (companyDefaultUsageResult.data) {
+        return Result.fail(
+          new PaymentTermCannotBeDisabledError(
+            "Este plazo de pago está configurado como plazo por defecto de la empresa. Cambia o elimina primero el plazo por defecto antes de desactivarlo."
+          )
+        );
+      }
+    }
+
    const statusResult = action === "enable" ? paymentTerm.enable() : paymentTerm.disable();
    if (statusResult.isFailure) {
      return Result.fail(statusResult.error);
@ -32,7 +65,7 @@ export class PaymentTermStatusChanger implements IPaymentTermStatusChanger {
      return Result.ok(paymentTerm);
    }

-    const persistenceResult = await this.repository.update(paymentTerm, transaction);
+    const persistenceResult = await this.deps.repository.update(paymentTerm, transaction);
    if (persistenceResult.isFailure) {
      return Result.fail(persistenceResult.error);
    }
--- a/modules/catalogs/src/api/index.ts
+++ b/modules/catalogs/src/api/index.ts
@ -27,7 +27,7 @@ export type CatalogsPublicServicesType = ReturnType<typeof buildCatalogsPublicSe
 export const catalogsAPIModule: IModuleServer = {
  name: "catalogs",
  version: "1.0.0",
-  dependencies: ["identity", "companies"],
+  dependencies: ["identity"],

  /**
   * Fase de SETUP
--- a/modules/catalogs/src/api/infrastructure/payment-methods/express/payment-methods.routes.ts
+++ b/modules/catalogs/src/api/infrastructure/payment-methods/express/payment-methods.routes.ts
@ -1,5 +1,5 @@
 import { type StartParams, validateRequest } from "@erp/core/api";
-import { requireIdentityTenant } from "@erp/identity/api";
+import { requireIdentityTenantMembership } from "@erp/identity/api";
 import { type NextFunction, type Request, type Response, Router } from "express";

 import {
@ -34,7 +34,7 @@ export const paymentMethodsRouter = (params: StartParams) => {

  // ----------------------------------------------

-  router.use(...requireIdentityTenant(params));
+  router.use(...requireIdentityTenantMembership(params));

  // ----------------------------------------------

--- a/modules/catalogs/src/api/infrastructure/payment-terms/di/payment-terms.di.ts
+++ b/modules/catalogs/src/api/infrastructure/payment-terms/di/payment-terms.di.ts
@ -21,10 +21,13 @@ import {
  buildPaymentTermUpdater,
 } from "../../../application/payment-terms";
 import type { IPaymentTermRepository } from "../../../application/payment-terms/repositories";
+import {
+  buildCompanyDefaultPaymentTermUsageChecker,
+  buildPaymentTermReferenceUsageChecker,
+} from "../payment-term-reference-usage-checker";

 import { buildPaymentTermPersistenceMappers } from "./payment-term-persistence-mappers.di";
 import { buildPaymentTermRepository } from "./payment-term-repositories.di";
-import { buildPaymentTermReferenceUsageChecker } from "../payment-term-reference-usage-checker";

 export type PaymentTermsInternalDeps = {
  repository: IPaymentTermRepository;
@ -47,6 +50,9 @@ export const buildPaymentTermsDependencies = (params: ModuleParams): PaymentTerm

  const repository = buildPaymentTermRepository({ database, mappers: persistenceMappers });
  const usageChecker = buildPaymentTermReferenceUsageChecker(database as Sequelize);
+  const companyDefaultUsageChecker = buildCompanyDefaultPaymentTermUsageChecker(
+    database as Sequelize
+  );

  const inputMappers = buildPaymentTermInputMappers();

@ -54,7 +60,10 @@ export const buildPaymentTermsDependencies = (params: ModuleParams): PaymentTerm
  const creator = buildPaymentTermCreator({ repository });
  const updater = buildPaymentTermUpdater({ repository });
  const deleter = buildPaymentTermDeleter({ repository, usageChecker });
-  const statusChanger = buildPaymentTermStatusChanger({ repository });
+  const statusChanger = buildPaymentTermStatusChanger({
+    repository,
+    companyDefaultUsageChecker,
+  });

  const snapshotBuilders = buildPaymentTermSnapshotBuilders();
  return {
--- a/modules/catalogs/src/api/infrastructure/payment-terms/express/payment-terms.routes.ts
+++ b/modules/catalogs/src/api/infrastructure/payment-terms/express/payment-terms.routes.ts
@ -1,5 +1,5 @@
 import { type StartParams, validateRequest } from "@erp/core/api";
-import { requireIdentityTenant } from "@erp/identity/api";
+import { requireIdentityTenantMembership } from "@erp/identity/api";
 import type { NextFunction, Request, Response } from "express";
 import { Router } from "express";

@ -29,7 +29,7 @@ export const paymentTermsRouter = (params: StartParams) => {

  const router = Router({ mergeParams: true });

-  router.use(...requireIdentityTenant(params));
+  router.use(...requireIdentityTenantMembership(params));

  router.get(
    "/",
--- a/modules/catalogs/src/api/infrastructure/payment-terms/payment-term-reference-usage-checker.test.ts
+++ b/modules/catalogs/src/api/infrastructure/payment-terms/payment-term-reference-usage-checker.test.ts
@ -0,0 +1,48 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { UniqueID } from "@repo/rdx-ddd";
+
+import { buildCompanyDefaultPaymentTermUsageChecker } from "./payment-term-reference-usage-checker";
+
+test("company default usage checker mantiene aislamiento por company", async () => {
+  const companyAId = UniqueID.generateNewID();
+  const companyBId = UniqueID.generateNewID();
+  const paymentTermId = UniqueID.generateNewID();
+  let lastWhere: Record<string, string> | null = null;
+
+  const checker = buildCompanyDefaultPaymentTermUsageChecker({
+    models: {
+      CompanyModel: {
+        count: async ({ where }) => {
+          lastWhere = where;
+
+          return where.id === companyBId.toString() &&
+            where.default_payment_term_id === paymentTermId.toString()
+            ? 1
+            : 0;
+        },
+      },
+    },
+  } as never);
+
+  const resultForCompanyA = await checker.isUsedAsCompanyDefault({
+    companyId: companyAId,
+    paymentTermId,
+  });
+
+  assert.equal(resultForCompanyA.isSuccess, true);
+  assert.equal(resultForCompanyA.data, false);
+  assert.deepEqual(lastWhere, {
+    id: companyAId.toString(),
+    default_payment_term_id: paymentTermId.toString(),
+  });
+
+  const resultForCompanyB = await checker.isUsedAsCompanyDefault({
+    companyId: companyBId,
+    paymentTermId,
+  });
+
+  assert.equal(resultForCompanyB.isSuccess, true);
+  assert.equal(resultForCompanyB.data, true);
+});
--- a/modules/catalogs/src/api/infrastructure/payment-terms/payment-term-reference-usage-checker.ts
+++ b/modules/catalogs/src/api/infrastructure/payment-terms/payment-term-reference-usage-checker.ts
@ -63,3 +63,40 @@ export const buildPaymentTermReferenceUsageChecker = (database: Sequelize) => {
    },
  });
 };
+
+export const buildCompanyDefaultPaymentTermUsageChecker = (database: Sequelize) => {
+  return {
+    isUsedAsCompanyDefault: async (input: {
+      companyId: UniqueID;
+      paymentTermId: UniqueID;
+      transaction?: unknown;
+    }) => {
+      const { companyId, paymentTermId, transaction } = input;
+
+      try {
+        const models = database.models as SequelizeModelsRegistry;
+        const model = models.CompanyModel;
+
+        if (!model) {
+          return Result.ok(false);
+        }
+
+        const count = await model.count({
+          where: {
+            id: companyId.toString(),
+            default_payment_term_id: paymentTermId.toString(),
+          },
+          transaction: transaction as Transaction | undefined,
+        });
+
+        return Result.ok(count > 0);
+      } catch (error: unknown) {
+        return Result.fail(
+          error instanceof Error
+            ? error
+            : new Error("Failed checking company default payment term references.")
+        );
+      }
+    },
+  };
+};
--- a/modules/catalogs/src/api/infrastructure/tax-definitions/express/tax-definitions.routes.ts
+++ b/modules/catalogs/src/api/infrastructure/tax-definitions/express/tax-definitions.routes.ts
@ -1,5 +1,5 @@
 import { type StartParams, validateRequest } from "@erp/core/api";
-import { requireIdentityTenant } from "@erp/identity/api";
+import { requireIdentityTenantMembership } from "@erp/identity/api";
 import type { NextFunction, Request, Response } from "express";
 import { Router } from "express";

@ -29,7 +29,7 @@ export const taxDefinitionsRouter = (params: StartParams) => {

  const router = Router({ mergeParams: true });

-  router.use(...requireIdentityTenant(params));
+  router.use(...requireIdentityTenantMembership(params));

  router.get(
    "/",
--- a/modules/catalogs/src/api/infrastructure/tax-regimes/express/tax-regimes.routes.ts
+++ b/modules/catalogs/src/api/infrastructure/tax-regimes/express/tax-regimes.routes.ts
@ -1,5 +1,5 @@
 import { type StartParams, validateRequest } from "@erp/core/api";
-import { requireIdentityTenant } from "@erp/identity/api";
+import { requireIdentityTenantMembership } from "@erp/identity/api";
 import type { NextFunction, Request, Response } from "express";
 import { Router } from "express";

@ -29,7 +29,7 @@ export const taxRegimesRouter = (params: StartParams) => {

  const router = Router({ mergeParams: true });

-  router.use(...requireIdentityTenant(params));
+  router.use(...requireIdentityTenantMembership(params));

  router.get(
    "/",
--- a/modules/companies/package.json
+++ b/modules/companies/package.json
@ -14,20 +14,38 @@
  "exports": {
    ".": "./src/common/index.ts",
    "./common": "./src/common/index.ts",
-    "./api": "./src/api/index.ts"
+    "./api": "./src/api/index.ts",
+    "./client": "./src/web/manifest.ts"
+  },
+  "peerDependencies": {
+    "react": "^19.2.5",
+    "react-dom": "^19.2.5"
  },
  "devDependencies": {
    "@types/express": "^4.17.21",
+    "@types/react": "^19.2.14",
+    "@types/react-router-dom": "^5.3.3",
+    "react": "^19.2.5",
+    "react-dom": "^19.2.5",
    "rimraf": "^6.1.3",
    "typescript": "^6.0.2"
  },
  "dependencies": {
+    "@erp/catalogs": "workspace:*",
    "@erp/core": "workspace:*",
    "@erp/identity": "workspace:*",
+    "@hookform/resolvers": "^5.2.2",
+    "@repo/i18next": "workspace:*",
    "@repo/rdx-ddd": "workspace:*",
+    "@repo/rdx-ui": "workspace:*",
    "@repo/rdx-utils": "workspace:*",
+    "@repo/shadcn-ui": "workspace:*",
+    "@tanstack/react-query": "^5.98.0",
    "express": "^4.22.1",
+    "react-hook-form": "^7.72.1",
+    "react-i18next": "^17.0.2",
+    "react-router-dom": "^7.14.0",
    "sequelize": "^6.37.8",
    "zod": "^4.3.6"
  }
-}
+}
--- a/modules/companies/src/api/application/companies/public/mappers/company-public-model.mapper.ts
+++ b/modules/companies/src/api/application/companies/public/mappers/company-public-model.mapper.ts
@ -14,6 +14,9 @@ export class CompanyPublicModelMapper {
      email: maybeToNullable(company.email, (value) => value.toPrimitive()),
      phone: maybeToNullable(company.phone, (value) => value.toPrimitive()),
      website: maybeToNullable(company.website, (value) => value.toPrimitive()),
+      defaultPaymentTermId: maybeToNullable(company.defaultPaymentTermId, (value) =>
+        value.toPrimitive()
+      ),
      status: company.status.toPrimitive() as "active" | "disabled",
    };
  }
--- a/modules/companies/src/api/application/companies/public/models/company-public.model.ts
+++ b/modules/companies/src/api/application/companies/public/models/company-public.model.ts
@ -7,5 +7,6 @@ export interface CompanyPublicModel {
  email: string | null;
  phone: string | null;
  website: string | null;
+  defaultPaymentTermId: string | null;
  status: "active" | "disabled";
 }
--- a/modules/companies/src/api/application/companies/services/company-payment-term-resolver.test.ts
+++ b/modules/companies/src/api/application/companies/services/company-payment-term-resolver.test.ts
@ -0,0 +1,132 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import type { PaymentTermPublicModel } from "@erp/catalogs/api";
+import { UniqueID } from "@repo/rdx-ddd";
+import { Maybe, Result } from "@repo/rdx-utils";
+
+import { CompanyPaymentTermResolver } from "./company-payment-term-resolver";
+
+const buildPaymentTerm = (overrides?: Partial<PaymentTermPublicModel>): PaymentTermPublicModel => ({
+  id: UniqueID.generateNewID(),
+  companyId: UniqueID.generateNewID(),
+  name: "30 dias",
+  description: Maybe.none(),
+  isActive: true,
+  ...overrides,
+});
+
+test("acepta un payment term activo de la misma company", async () => {
+  const paymentTerm = buildPaymentTerm();
+  const resolver = new CompanyPaymentTermResolver({
+    paymentTermFinder: {
+      existsByIdInCompany: async () => Result.ok(true),
+      getByIdInCompany: async () => Result.ok(paymentTerm),
+      findByIdInCompany: async () => Result.ok(Maybe.some(paymentTerm)),
+    },
+  });
+
+  const result = await resolver.ensureAssignable({
+    companyId: paymentTerm.companyId,
+    id: Maybe.some(paymentTerm.id),
+  });
+
+  assert.equal(result.isSuccess, true);
+});
+
+test("acepta un payment term de sistema si esta activo", async () => {
+  const systemPaymentTerm: PaymentTermPublicModel & { isSystem: true } = {
+    ...buildPaymentTerm(),
+    isSystem: true,
+  };
+
+  const resolver = new CompanyPaymentTermResolver({
+    paymentTermFinder: {
+      existsByIdInCompany: async () => Result.ok(true),
+      getByIdInCompany: async () => Result.ok(systemPaymentTerm),
+      findByIdInCompany: async () => Result.ok(Maybe.some(systemPaymentTerm)),
+    },
+  });
+
+  const result = await resolver.ensureAssignable({
+    companyId: systemPaymentTerm.companyId,
+    id: Maybe.some(systemPaymentTerm.id),
+  });
+
+  assert.equal(result.isSuccess, true);
+});
+
+test("permite limpiar el valor con null", async () => {
+  const resolver = new CompanyPaymentTermResolver({
+    paymentTermFinder: {
+      existsByIdInCompany: async () => Result.ok(true),
+      getByIdInCompany: async () => Result.fail(new Error("unused")),
+      findByIdInCompany: async () => Result.fail(new Error("unused")),
+    },
+  });
+
+  const result = await resolver.ensureAssignable({
+    companyId: UniqueID.generateNewID(),
+    id: Maybe.none(),
+  });
+
+  assert.equal(result.isSuccess, true);
+});
+
+test("rechaza un payment term de otra company", async () => {
+  const resolver = new CompanyPaymentTermResolver({
+    paymentTermFinder: {
+      existsByIdInCompany: async () => Result.ok(false),
+      getByIdInCompany: async () => Result.fail(new Error("unused")),
+      findByIdInCompany: async () => Result.ok(Maybe.none()),
+    },
+  });
+
+  const result = await resolver.ensureAssignable({
+    companyId: UniqueID.generateNewID(),
+    id: Maybe.some(UniqueID.generateNewID()),
+  });
+
+  assert.equal(result.isFailure, true);
+  assert.match(result.error.message, /not found/i);
+});
+
+test("rechaza un payment term inactivo como nueva asignacion", async () => {
+  const paymentTerm = buildPaymentTerm({
+    isActive: false,
+  });
+
+  const resolver = new CompanyPaymentTermResolver({
+    paymentTermFinder: {
+      existsByIdInCompany: async () => Result.ok(true),
+      getByIdInCompany: async () => Result.ok(paymentTerm),
+      findByIdInCompany: async () => Result.ok(Maybe.some(paymentTerm)),
+    },
+  });
+
+  const result = await resolver.ensureAssignable({
+    companyId: paymentTerm.companyId,
+    id: Maybe.some(paymentTerm.id),
+  });
+
+  assert.equal(result.isFailure, true);
+  assert.match(result.error.message, /must be active/i);
+});
+
+test("rechaza un id inexistente", async () => {
+  const resolver = new CompanyPaymentTermResolver({
+    paymentTermFinder: {
+      existsByIdInCompany: async () => Result.ok(false),
+      getByIdInCompany: async () => Result.fail(new Error("unused")),
+      findByIdInCompany: async () => Result.ok(Maybe.none()),
+    },
+  });
+
+  const result = await resolver.ensureAssignable({
+    companyId: UniqueID.generateNewID(),
+    id: Maybe.some(UniqueID.generateNewID()),
+  });
+
+  assert.equal(result.isFailure, true);
+  assert.match(result.error.message, /not found/i);
+});
--- a/modules/companies/src/api/application/companies/services/company-payment-term-resolver.ts
+++ b/modules/companies/src/api/application/companies/services/company-payment-term-resolver.ts
@ -0,0 +1,55 @@
+import type { IPaymentTermPublicFinder } from "@erp/catalogs/api";
+import type { UniqueID } from "@repo/rdx-ddd";
+import { type Maybe, Result } from "@repo/rdx-utils";
+
+export interface ICompanyPaymentTermResolver {
+  ensureAssignable(params: {
+    companyId: UniqueID;
+    id: Maybe<UniqueID>;
+    transaction?: unknown;
+  }): Promise<Result<void, Error>>;
+}
+
+/**
+ * Valida referencias externas a catálogos antes de persistirlas en Company.
+ *
+ * El contrato evita depender de Sequelize o repositorios cross-module y asegura
+ * que una nueva asignación solo apunte a un plazo activo de la misma empresa.
+ */
+export class CompanyPaymentTermResolver implements ICompanyPaymentTermResolver {
+  public constructor(
+    private readonly deps: {
+      paymentTermFinder: IPaymentTermPublicFinder;
+    }
+  ) {}
+
+  public async ensureAssignable(params: {
+    companyId: UniqueID;
+    id: Maybe<UniqueID>;
+    transaction?: unknown;
+  }): Promise<Result<void, Error>> {
+    if (params.id.isNone()) {
+      return Result.ok(undefined);
+    }
+
+    const result = await this.deps.paymentTermFinder.findByIdInCompany({
+      companyId: params.companyId,
+      id: params.id.unwrap(),
+      transaction: params.transaction,
+    });
+
+    if (result.isFailure) {
+      return Result.fail(result.error);
+    }
+
+    if (result.data.isNone()) {
+      return Result.fail(new Error("Default payment term not found in current company."));
+    }
+
+    if (!result.data.unwrap().isActive) {
+      return Result.fail(new Error("Default payment term must be active."));
+    }
+
+    return Result.ok(undefined);
+  }
+}
--- a/modules/companies/src/api/application/companies/services/index.ts
+++ b/modules/companies/src/api/application/companies/services/index.ts
@ -1,4 +1,5 @@
 export * from "./company-creator";
 export * from "./company-finder";
+export * from "./company-payment-term-resolver";
 export * from "./company-status-changer";
 export * from "./company-updater";
--- a/modules/companies/src/api/application/companies/use-cases/create-company.use-case.test.ts
+++ b/modules/companies/src/api/application/companies/use-cases/create-company.use-case.test.ts
@ -0,0 +1,90 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import type { ITransactionManager } from "@erp/core/api";
+import {
+  EmailAddress,
+  Name,
+  PhoneNumber,
+  TextValue,
+  URLAddress,
+  UniqueID,
+  UtcDateTime,
+} from "@repo/rdx-ddd";
+import { Maybe, Result } from "@repo/rdx-utils";
+
+import { Company, CompanySlug, CompanyStatus } from "../../../domain";
+import { CompanyPublicModelMapper } from "../public";
+import { CreateCompanyUseCase } from "./create-company.use-case";
+
+const buildTransactionManager = (): ITransactionManager => ({
+  start: async () => undefined,
+  getTransaction: () => undefined,
+  complete: async <T>(work: (transaction: unknown) => Promise<T>) => work(undefined),
+  commit: async () => undefined,
+  rollback: async () => undefined,
+});
+
+const buildCompany = () => {
+  const now = UtcDateTime.createFromISO("2026-08-16T10:00:00.000Z");
+  const id = UniqueID.generateNewID();
+  const legalName = Name.create("Rodax Labs");
+  const slug = CompanySlug.create("rodax-labs");
+  const email = EmailAddress.create("hello@rodax.test");
+  const phone = PhoneNumber.create("+34911111111");
+  const website = URLAddress.create("https://rodax.test");
+  const tin = TextValue.create("B12345678");
+
+  assert.equal(now.isSuccess, true);
+  assert.equal(legalName.isSuccess, true);
+  assert.equal(slug.isSuccess, true);
+  assert.equal(email.isSuccess, true);
+  assert.equal(phone.isSuccess, true);
+  assert.equal(website.isSuccess, true);
+  assert.equal(tin.isSuccess, true);
+
+  const companyResult = Company.create({
+    legalName: legalName.data,
+    tradeName: Maybe.none(),
+    tin: Maybe.some(tin.data),
+    slug: slug.data,
+    email: Maybe.some(email.data),
+    phone: Maybe.some(phone.data),
+    website: Maybe.some(website.data),
+    defaultPaymentTermId: Maybe.none(),
+    status: CompanyStatus.createActive(),
+    createdAt: now.data,
+    updatedAt: now.data,
+  }, id);
+
+  assert.equal(companyResult.isSuccess, true);
+  return companyResult.data;
+};
+
+test("create devuelve la company sin default payment term", async () => {
+  const company = buildCompany();
+
+  const useCase = new CreateCompanyUseCase({
+    creator: {
+      create: async () => Result.ok(company),
+    },
+    responseMapper: new CompanyPublicModelMapper(),
+    transactionManager: buildTransactionManager(),
+  });
+
+  const result = await useCase.execute({
+    dto: {
+      id: company.id.toPrimitive(),
+      legal_name: company.legalName.toPrimitive(),
+      trade_name: null,
+      tin: company.tin.unwrap().toPrimitive(),
+      slug: company.slug.toPrimitive(),
+      email: company.email.unwrap().toPrimitive(),
+      phone: company.phone.unwrap().toPrimitive(),
+      website: company.website.unwrap().toPrimitive(),
+    },
+  });
+
+  assert.equal(result.isSuccess, true);
+  assert.equal(result.data.default_payment_term_id, null);
+});
--- a/modules/companies/src/api/application/companies/use-cases/create-company.use-case.ts
+++ b/modules/companies/src/api/application/companies/use-cases/create-company.use-case.ts
@ -9,7 +9,7 @@ import {
  UtcDateTime,
  maybeFromNullableResult,
 } from "@repo/rdx-ddd";
-import { Result } from "@repo/rdx-utils";
+import { Maybe, Result } from "@repo/rdx-utils";

 import type { CreateCompanyRequestDTO, CompanyResponseDTO } from "../../../../common";
 import { CompanySlug, CompanyStatus, type ICompanyCreateProps } from "../../../domain";
@ -99,6 +99,7 @@ function mapCreateCompanyProps(dto: CreateCompanyRequestDTO) {
    email: emailResult.data,
    phone: phoneResult.data,
    website: websiteResult.data,
+    defaultPaymentTermId: Maybe.none(),
    status: CompanyStatus.createActive(),
    createdAt: now,
    updatedAt: now,
@ -119,6 +120,7 @@ function toCompanyResponseDTO(model: {
  email: string | null;
  phone: string | null;
  website: string | null;
+  defaultPaymentTermId: string | null;
  status: "active" | "disabled";
 }): CompanyResponseDTO {
  return {
@ -130,6 +132,7 @@ function toCompanyResponseDTO(model: {
    email: model.email,
    phone: model.phone,
    website: model.website,
+    default_payment_term_id: model.defaultPaymentTermId,
    status: model.status,
  };
 }
--- a/modules/companies/src/api/application/companies/use-cases/disable-company.use-case.ts
+++ b/modules/companies/src/api/application/companies/use-cases/disable-company.use-case.ts
@ -56,6 +56,7 @@ function toCompanyResponseDTO(model: {
  email: string | null;
  phone: string | null;
  website: string | null;
+  defaultPaymentTermId: string | null;
  status: "active" | "disabled";
 }): CompanyResponseDTO {
  return {
@ -67,6 +68,7 @@ function toCompanyResponseDTO(model: {
    email: model.email,
    phone: model.phone,
    website: model.website,
+    default_payment_term_id: model.defaultPaymentTermId,
    status: model.status,
  };
 }
--- a/modules/companies/src/api/application/companies/use-cases/enable-company.use-case.ts
+++ b/modules/companies/src/api/application/companies/use-cases/enable-company.use-case.ts
@ -56,6 +56,7 @@ function toCompanyResponseDTO(model: {
  email: string | null;
  phone: string | null;
  website: string | null;
+  defaultPaymentTermId: string | null;
  status: "active" | "disabled";
 }): CompanyResponseDTO {
  return {
@ -67,6 +68,7 @@ function toCompanyResponseDTO(model: {
    email: model.email,
    phone: model.phone,
    website: model.website,
+    default_payment_term_id: model.defaultPaymentTermId,
    status: model.status,
  };
 }
--- a/modules/companies/src/api/application/companies/use-cases/get-company-by-id.use-case.ts
+++ b/modules/companies/src/api/application/companies/use-cases/get-company-by-id.use-case.ts
@ -45,6 +45,7 @@ function toCompanyResponseDTO(model: {
  email: string | null;
  phone: string | null;
  website: string | null;
+  defaultPaymentTermId: string | null;
  status: "active" | "disabled";
 }): CompanyResponseDTO {
  return {
@ -56,6 +57,7 @@ function toCompanyResponseDTO(model: {
    email: model.email,
    phone: model.phone,
    website: model.website,
+    default_payment_term_id: model.defaultPaymentTermId,
    status: model.status,
  };
 }
--- a/modules/companies/src/api/application/companies/use-cases/update-company.use-case.test.ts
+++ b/modules/companies/src/api/application/companies/use-cases/update-company.use-case.test.ts
@ -0,0 +1,101 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import type { ITransactionManager } from "@erp/core/api";
+import {
+  EmailAddress,
+  Name,
+  PhoneNumber,
+  TextValue,
+  URLAddress,
+  UniqueID,
+  UtcDateTime,
+} from "@repo/rdx-ddd";
+import { Maybe, Result } from "@repo/rdx-utils";
+
+import { Company, CompanySlug, CompanyStatus, type CompanyPatchProps } from "../../../domain";
+import { CompanyPublicModelMapper } from "../public";
+import { UpdateCompanyUseCase } from "./update-company.use-case";
+
+const buildTransactionManager = (): ITransactionManager => ({
+  start: async () => undefined,
+  getTransaction: () => undefined,
+  complete: async <T>(work: (transaction: unknown) => Promise<T>) => work(undefined),
+  commit: async () => undefined,
+  rollback: async () => undefined,
+});
+
+const buildCompany = () => {
+  const now = UtcDateTime.createFromISO("2026-08-16T10:00:00.000Z");
+  const id = UniqueID.generateNewID();
+  const legalName = Name.create("Rodax Labs");
+  const slug = CompanySlug.create("rodax-labs");
+  const email = EmailAddress.create("hello@rodax.test");
+  const phone = PhoneNumber.create("+34911111111");
+  const website = URLAddress.create("https://rodax.test");
+  const tin = TextValue.create("B12345678");
+
+  assert.equal(now.isSuccess, true);
+  assert.equal(legalName.isSuccess, true);
+  assert.equal(slug.isSuccess, true);
+  assert.equal(email.isSuccess, true);
+  assert.equal(phone.isSuccess, true);
+  assert.equal(website.isSuccess, true);
+  assert.equal(tin.isSuccess, true);
+
+  const companyResult = Company.create({
+    legalName: legalName.data,
+    tradeName: Maybe.none(),
+    tin: Maybe.some(tin.data),
+    slug: slug.data,
+    email: Maybe.some(email.data),
+    phone: Maybe.some(phone.data),
+    website: Maybe.some(website.data),
+    defaultPaymentTermId: Maybe.some(UniqueID.generateNewID()),
+    status: CompanyStatus.createActive(),
+    createdAt: now.data,
+    updatedAt: now.data,
+  }, id);
+
+  assert.equal(companyResult.isSuccess, true);
+  return companyResult.data;
+};
+
+test("update permite limpiar el default payment term con null", async () => {
+  const company = buildCompany();
+  let receivedPatch: CompanyPatchProps | null = null;
+  let receivedId: Maybe<UniqueID> | undefined;
+
+  const useCase = new UpdateCompanyUseCase({
+    updater: {
+      update: async ({ patchProps }) => {
+        receivedPatch = patchProps;
+
+        const updateResult = company.update(patchProps);
+        assert.equal(updateResult.isSuccess, true);
+
+        return Result.ok(company);
+      },
+    },
+    paymentTermResolver: {
+      ensureAssignable: async ({ id }) => {
+        receivedId = id;
+        return Result.ok(undefined);
+      },
+    },
+    responseMapper: new CompanyPublicModelMapper(),
+    transactionManager: buildTransactionManager(),
+  });
+
+  const result = await useCase.execute({
+    company_id: company.id.toPrimitive(),
+    dto: {
+      default_payment_term_id: null,
+    },
+  });
+
+  assert.equal(result.isSuccess, true);
+  assert.equal(receivedPatch?.defaultPaymentTermId?.isNone(), true);
+  assert.equal(receivedId?.isNone(), true);
+  assert.equal(result.data.default_payment_term_id, null);
+});
--- a/modules/companies/src/api/application/companies/use-cases/update-company.use-case.ts
+++ b/modules/companies/src/api/application/companies/use-cases/update-company.use-case.ts
@ -9,17 +9,18 @@ import {
  UtcDateTime,
  maybeFromNullableResult,
 } from "@repo/rdx-ddd";
-import { Result } from "@repo/rdx-utils";
+import { Maybe, Result } from "@repo/rdx-utils";

 import type { CompanyResponseDTO, UpdateCompanyRequestDTO } from "../../../../common";
 import { CompanySlug, type CompanyPatchProps } from "../../../domain";
 import type { CompanyPublicModelMapper } from "../public";
-import type { ICompanyUpdater } from "../services";
+import type { ICompanyPaymentTermResolver, ICompanyUpdater } from "../services";

 export class UpdateCompanyUseCase {
  public constructor(
    private readonly deps: {
      updater: ICompanyUpdater;
+      paymentTermResolver: ICompanyPaymentTermResolver;
      responseMapper: CompanyPublicModelMapper;
      transactionManager: ITransactionManager;
    }
@ -39,8 +40,25 @@ export class UpdateCompanyUseCase {
      return Promise.resolve(Result.fail(patchPropsResult.error));
    }

+    const defaultPaymentTermIdResult = mapDefaultPaymentTermId(params.dto);
+    if (defaultPaymentTermIdResult.isFailure) {
+      return Promise.resolve(Result.fail(defaultPaymentTermIdResult.error));
+    }
+
    return this.deps.transactionManager.complete(async (transaction: unknown) => {
      try {
+        if (defaultPaymentTermIdResult.data !== undefined) {
+          const ensureResult = await this.deps.paymentTermResolver.ensureAssignable({
+            companyId: companyIdResult.data,
+            id: defaultPaymentTermIdResult.data,
+            transaction,
+          });
+
+          if (ensureResult.isFailure) {
+            return Result.fail(ensureResult.error);
+          }
+        }
+
        const updateResult = await this.deps.updater.update({
          id: companyIdResult.data,
          patchProps: patchPropsResult.data,
@ -120,9 +138,39 @@ function mapUpdateCompanyProps(dto: UpdateCompanyRequestDTO): Result<CompanyPatc
    patchProps.website = websiteResult.data;
  }

+  if (dto.default_payment_term_id !== undefined) {
+    const defaultPaymentTermIdResult = maybeFromNullableResult(
+      dto.default_payment_term_id,
+      (value) => UniqueID.create(value)
+    );
+    if (defaultPaymentTermIdResult.isFailure) {
+      return Result.fail(defaultPaymentTermIdResult.error);
+    }
+    patchProps.defaultPaymentTermId = defaultPaymentTermIdResult.data;
+  }
+
  return Result.ok(patchProps);
 }

+function mapDefaultPaymentTermId(
+  dto: UpdateCompanyRequestDTO
+): Result<Maybe<UniqueID> | undefined, Error> {
+  if (dto.default_payment_term_id === undefined) {
+    return Result.ok(undefined);
+  }
+
+  if (dto.default_payment_term_id === null) {
+    return Result.ok(Maybe.none());
+  }
+
+  const defaultPaymentTermIdResult = UniqueID.create(dto.default_payment_term_id);
+  if (defaultPaymentTermIdResult.isFailure) {
+    return Result.fail(defaultPaymentTermIdResult.error);
+  }
+
+  return Result.ok(Maybe.some(defaultPaymentTermIdResult.data));
+}
+
 function toCompanyResponseDTO(model: {
  id: string;
  legalName: string;
@ -132,6 +180,7 @@ function toCompanyResponseDTO(model: {
  email: string | null;
  phone: string | null;
  website: string | null;
+  defaultPaymentTermId: string | null;
  status: "active" | "disabled";
 }): CompanyResponseDTO {
  return {
@ -143,6 +192,7 @@ function toCompanyResponseDTO(model: {
    email: model.email,
    phone: model.phone,
    website: model.website,
+    default_payment_term_id: model.defaultPaymentTermId,
    status: model.status,
  };
 }
--- a/modules/companies/src/api/domain/companies/company.aggregate.ts
+++ b/modules/companies/src/api/domain/companies/company.aggregate.ts
@ -22,6 +22,7 @@ export interface ICompanyCreateProps {
  email: Maybe<EmailAddress>;
  phone: Maybe<PhoneNumber>;
  website: Maybe<URLAddress>;
+  defaultPaymentTermId: Maybe<UniqueID>;
  status: CompanyStatus;
  createdAt: UtcDate;
  updatedAt: UtcDate;
@ -35,6 +36,7 @@ export type CompanyPatchProps = Partial<{
  email: Maybe<EmailAddress>;
  phone: Maybe<PhoneNumber>;
  website: Maybe<URLAddress>;
+  defaultPaymentTermId: Maybe<UniqueID>;
 }> & {
  updatedAt: UtcDate;
 };
@ -107,6 +109,10 @@ export class Company extends AggregateRoot<CompanyInternalProps> {
    return this.props.website;
  }

+  public get defaultPaymentTermId(): Maybe<UniqueID> {
+    return this.props.defaultPaymentTermId;
+  }
+
  public get status(): CompanyStatus {
    return this.props.status;
  }
@ -167,6 +173,14 @@ export class Company extends AggregateRoot<CompanyInternalProps> {
      hasChanges = true;
    }

+    if (
+      patch.defaultPaymentTermId !== undefined &&
+      !Company.sameMaybeValueObject(this.props.defaultPaymentTermId, patch.defaultPaymentTermId)
+    ) {
+      this.props.defaultPaymentTermId = patch.defaultPaymentTermId;
+      hasChanges = true;
+    }
+
    if (!hasChanges) {
      return Result.ok(false);
    }
--- a/modules/companies/src/api/index.ts
+++ b/modules/companies/src/api/index.ts
@ -12,7 +12,7 @@ export type CompaniesPublicServicesType = ICompanyPublicServices;
 export const companiesAPIModule: IModuleServer = {
  name: "companies",
  version: "1.0.0",
-  dependencies: ["identity"],
+  dependencies: ["identity", "catalogs"],

  /**
   * Fase de SETUP
--- a/modules/companies/src/api/infrastructure/di/companies.di.ts
+++ b/modules/companies/src/api/infrastructure/di/companies.di.ts
@ -3,6 +3,7 @@ import type { IIdentityPublicServices } from "@erp/identity/api";
 import type { Sequelize } from "sequelize";

 import {
+  CompanyPaymentTermResolver,
  CompanyCreator,
  CompanyFinder,
  CompanyPublicFinder,
@ -19,6 +20,7 @@ import {
  buildCompanyPublicServices,
 } from "../../application";
 import { SequelizeCompanyDomainMapper, SequelizeCompanyRepository } from "../persistence";
+import { resolveCompanyCatalogsDeps } from "./company-catalog-deps.di";

 export type CompaniesInternalDeps = {
  repository: SequelizeCompanyRepository;
@ -38,10 +40,14 @@ export const buildCompaniesDependencies = (params: ModuleParams): CompaniesInter
  const transactionManager = buildTransactionManager(database as Sequelize);
  const responseMapper = new CompanyPublicModelMapper();
  const identityServices = getService<IIdentityPublicServices>("identity:general");
+  const catalogsDeps = resolveCompanyCatalogsDeps(params);

  const repository = new SequelizeCompanyRepository(new SequelizeCompanyDomainMapper(), database);
  const finder = new CompanyFinder(repository);
  const creator = new CompanyCreator(repository);
+  const paymentTermResolver = new CompanyPaymentTermResolver({
+    paymentTermFinder: catalogsDeps.paymentTerm.finder,
+  });
  const updater = new CompanyUpdater({ finder, repository });
  const statusChanger = new CompanyStatusChanger(repository);
  const publicFinder = new CompanyPublicFinder({
@ -75,6 +81,7 @@ export const buildCompaniesDependencies = (params: ModuleParams): CompaniesInter
      updateCompany: () =>
        new UpdateCompanyUseCase({
          updater,
+          paymentTermResolver,
          responseMapper,
          transactionManager,
        }),
--- a/modules/companies/src/api/infrastructure/di/company-catalog-deps.di.ts
+++ b/modules/companies/src/api/infrastructure/di/company-catalog-deps.di.ts
@ -0,0 +1,21 @@
+import type { CatalogsPublicServicesType } from "@erp/catalogs/api";
+import type { ModuleParams } from "@erp/core/api";
+
+export function resolveCompanyCatalogsDeps(params: ModuleParams): {
+  paymentTerm: {
+    finder: CatalogsPublicServicesType["paymentTerms"]["finder"];
+  };
+} {
+  const paymentTerm =
+    params.getService<CatalogsPublicServicesType["paymentTerms"]>("catalogs:paymentTerms");
+
+  if (!paymentTerm?.finder) {
+    throw new Error("Missing public service: catalogs:paymentTerms.finder");
+  }
+
+  return {
+    paymentTerm: {
+      finder: paymentTerm.finder,
+    },
+  };
+}
--- a/modules/companies/src/api/infrastructure/persistence/sequelize/mappers/sequelize-company-domain.mapper.ts
+++ b/modules/companies/src/api/infrastructure/persistence/sequelize/mappers/sequelize-company-domain.mapper.ts
@ -59,6 +59,11 @@ export class SequelizeCompanyDomainMapper extends SequelizeDomainMapper<
        "website",
        errors
      );
+      const defaultPaymentTermId = extractOrPushError(
+        maybeFromNullableResult(source.default_payment_term_id, (value) => UniqueID.create(value)),
+        "default_payment_term_id",
+        errors
+      );
      const status = extractOrPushError(CompanyStatus.create(source.status), "status", errors);
      const createdAt = extractOrPushError(
        UtcDateTime.createFromISO(toUtcIsoString(source.created_at)),
@ -83,6 +88,7 @@ export class SequelizeCompanyDomainMapper extends SequelizeDomainMapper<
        email: email!,
        phone: phone!,
        website: website!,
+        defaultPaymentTermId: defaultPaymentTermId!,
        status: status!,
        createdAt: createdAt!,
        updatedAt: updatedAt!,
@ -107,6 +113,9 @@ export class SequelizeCompanyDomainMapper extends SequelizeDomainMapper<
      email: maybeToNullable(source.email, (value: EmailAddress) => value.toPrimitive()),
      phone: maybeToNullable(source.phone, (value: PhoneNumber) => value.toPrimitive()),
      website: maybeToNullable(source.website, (value: URLAddress) => value.toPrimitive()),
+      default_payment_term_id: maybeToNullable(source.defaultPaymentTermId, (value) =>
+        value.toPrimitive()
+      ),
      status: source.status.toPrimitive(),
      created_at: source.createdAt.toISOString(),
      updated_at: source.updatedAt.toISOString(),
--- a/modules/companies/src/api/infrastructure/persistence/sequelize/models/sequelize-company.model.ts
+++ b/modules/companies/src/api/infrastructure/persistence/sequelize/models/sequelize-company.model.ts
@ -20,6 +20,7 @@ export class CompanyModel extends Model<
  declare email: string | null;
  declare phone: string | null;
  declare website: string | null;
+  declare default_payment_term_id: string | null;
  declare status: string;
  declare created_at: string;
  declare updated_at: string;
@ -71,6 +72,11 @@ export default (database: Sequelize) => {
        allowNull: true,
        defaultValue: null,
      },
+      default_payment_term_id: {
+        type: DataTypes.UUID,
+        allowNull: true,
+        defaultValue: null,
+      },
      status: {
        type: DataTypes.STRING,
        allowNull: false,
@ -106,6 +112,10 @@ export default (database: Sequelize) => {
          name: "idx_companies_tin",
          fields: ["tin"],
        },
+        {
+          name: "idx_companies_default_payment_term",
+          fields: ["default_payment_term_id"],
+        },
      ],
      defaultScope: {},
      scopes: {},
--- a/modules/companies/src/common/dto/request/update-company.request.dto.ts
+++ b/modules/companies/src/common/dto/request/update-company.request.dto.ts
@ -15,6 +15,7 @@ export const UpdateCompanyRequestSchema = z.object({
  email: EmailSchema.nullable().optional(),
  phone: z.string().nullable().optional(),
  website: WebsiteSchema.nullable().optional(),
+  default_payment_term_id: z.uuid().nullable().optional(),
 });

 export type UpdateCompanyRequestDTO = z.infer<typeof UpdateCompanyRequestSchema>;
--- a/modules/companies/src/common/dto/response/company.response.dto.ts
+++ b/modules/companies/src/common/dto/response/company.response.dto.ts
@ -12,6 +12,7 @@ export const CompanyResponseSchema = z.object({
  email: EmailSchema.nullable(),
  phone: z.string().nullable(),
  website: WebsiteSchema.nullable(),
+  default_payment_term_id: z.uuid().nullable(),
  status: CompanyStatusResponseSchema,
 });

--- a/modules/companies/src/common/locales/en.json
+++ b/modules/companies/src/common/locales/en.json
@ -0,0 +1,52 @@
+{
+  "settings": {
+    "companyDetails": {
+      "title": "Company details",
+      "description": "Configure the active company general data and its default payment term.",
+      "sections": {
+        "paymentTerm": {
+          "title": "Commercial settings",
+          "description": "This term will only be used as the initial value for future configurations.",
+          "field": {
+            "label": "Default payment term",
+            "description": "It must belong to the active company and stay active for new assignments.",
+            "placeholder": "Select a payment term",
+            "none": "No default payment term",
+            "currentInactive": "{{name}} (current inactive)"
+          }
+        }
+      },
+      "actions": {
+        "save": "Save changes",
+        "saving": "Saving...",
+        "reset": "Reset"
+      },
+      "feedback": {
+        "idle": "No pending changes.",
+        "saving": "Saving company settings.",
+        "success": {
+          "title": "Settings updated",
+          "message": "The default payment term was saved successfully."
+        },
+        "error": {
+          "title": "Could not save",
+          "message": "Review the configuration and try again."
+        },
+        "validation": {
+          "title": "Review the data",
+          "message": "Fix the highlighted fields before saving."
+        },
+        "noChanges": {
+          "title": "No changes",
+          "message": "There are no pending changes to save."
+        }
+      },
+      "pageError": {
+        "title": "Could not load the active company",
+        "description": "Reload the page to try again.",
+        "retry": "Retry",
+        "retrying": "Retrying..."
+      }
+    }
+  }
+}
--- a/modules/companies/src/common/locales/es.json
+++ b/modules/companies/src/common/locales/es.json
@ -0,0 +1,52 @@
+{
+  "settings": {
+    "companyDetails": {
+      "title": "Datos de empresa",
+      "description": "Configura los datos generales de la empresa activa y su plazo de pago por defecto.",
+      "sections": {
+        "paymentTerm": {
+          "title": "Configuración comercial",
+          "description": "Este plazo solo se usará como valor inicial en futuras configuraciones.",
+          "field": {
+            "label": "Plazo de pago por defecto",
+            "description": "Debe pertenecer a la empresa activa y estar activo para nuevas asignaciones.",
+            "placeholder": "Selecciona un plazo de pago",
+            "none": "Sin plazo por defecto",
+            "currentInactive": "{{name}} (inactivo actual)"
+          }
+        }
+      },
+      "actions": {
+        "save": "Guardar cambios",
+        "saving": "Guardando...",
+        "reset": "Restablecer"
+      },
+      "feedback": {
+        "idle": "Sin cambios pendientes.",
+        "saving": "Guardando configuración de empresa.",
+        "success": {
+          "title": "Configuración actualizada",
+          "message": "El plazo de pago por defecto se ha guardado correctamente."
+        },
+        "error": {
+          "title": "No se pudo guardar",
+          "message": "Revisa la configuración e inténtalo de nuevo."
+        },
+        "validation": {
+          "title": "Revisa los datos",
+          "message": "Corrige los campos marcados antes de guardar."
+        },
+        "noChanges": {
+          "title": "Sin cambios",
+          "message": "No hay cambios pendientes de guardar."
+        }
+      },
+      "pageError": {
+        "title": "No se pudo cargar la empresa activa",
+        "description": "Recarga la pantalla para volver a intentarlo.",
+        "retry": "Reintentar",
+        "retrying": "Reintentando..."
+      }
+    }
+  }
+}
--- a/modules/companies/src/web/company-routes.tsx
+++ b/modules/companies/src/web/company-routes.tsx
@ -0,0 +1,22 @@
+import { lazy } from "react";
+
+import type { ModuleClientParams, ModuleRouteObject } from "@erp/core/client";
+
+const CompanyDetailsSettingsPage = lazy(() =>
+  import("./settings/company-details").then((module) => ({
+    default: module.CompanyDetailsSettingsPage,
+  }))
+);
+
+export const CompanyRoutes = (_params: ModuleClientParams): ModuleRouteObject[] => {
+  return [
+    {
+      path: "settings/company/details",
+      handle: {
+        layout: "app-sidebar",
+        protected: true,
+      },
+      element: <CompanyDetailsSettingsPage />,
+    },
+  ];
+};
--- a/modules/companies/src/web/i18n.ts
+++ b/modules/companies/src/web/i18n.ts
@ -0,0 +1,24 @@
+import { i18n, registerTranslations } from "@repo/i18next";
+import { useEffect } from "react";
+import { useTranslation as useI18NextTranslation } from "react-i18next";
+
+import enResources from "../common/locales/en.json";
+import esResources from "../common/locales/es.json";
+
+import { MODULE_NAME } from "./manifest";
+
+export const ensureModuleTranslations = () => {
+  registerTranslations(MODULE_NAME, "en", enResources);
+  registerTranslations(MODULE_NAME, "es", esResources);
+};
+
+export const useTranslation = () => {
+  // biome-ignore lint/correctness/useExhaustiveDependencies: registra traducciones de forma idempotente
+  useEffect(() => {
+    ensureModuleTranslations();
+  }, [i18n]);
+
+  return useI18NextTranslation(MODULE_NAME, {
+    i18n,
+  });
+};
--- a/modules/companies/src/web/manifest.ts
+++ b/modules/companies/src/web/manifest.ts
@ -0,0 +1,30 @@
+import type { IModuleClient } from "@erp/core/client";
+
+import { CompanyRoutes } from "./company-routes";
+import { ensureModuleTranslations } from "./i18n";
+
+export const MODULE_NAME = "Companies";
+const MODULE_VERSION = "1.0.0";
+
+ensureModuleTranslations();
+
+export const CompaniesModuleManifest: IModuleClient = {
+  name: MODULE_NAME,
+  version: MODULE_VERSION,
+  dependencies: ["auth", "Core", "Catalogs"],
+  protected: true,
+  layout: "app-sidebar",
+  settings: {
+    entries: [
+      {
+        id: "company-details",
+        sectionId: "company",
+        labelKey: "settings.companyDetails.title",
+        path: "/settings/company/details",
+      },
+    ],
+  },
+  routes: (params) => CompanyRoutes(params),
+};
+
+export default CompaniesModuleManifest;
--- a/modules/companies/src/web/settings/company-details/controllers/index.ts
+++ b/modules/companies/src/web/settings/company-details/controllers/index.ts
@ -0,0 +1 @@
+export * from "./use-company-details-settings-controller";
--- a/modules/companies/src/web/settings/company-details/controllers/use-company-details-settings-controller.ts
+++ b/modules/companies/src/web/settings/company-details/controllers/use-company-details-settings-controller.ts
@ -0,0 +1,218 @@
+import { applyValidationErrorCollection } from "@erp/core";
+import { formHasAnyDirty } from "@erp/core/client";
+import { useHookForm } from "@erp/core/hooks";
+import {
+  getPaymentTermOptions,
+  usePaymentTermDetailQuery,
+  usePaymentTermListQuery,
+} from "@erp/catalogs/client/payment-terms";
+import { useIdentityAuthSession } from "@erp/identity/client";
+import {
+  focusFirstInputFormError,
+  getFirstFormErrorMessage,
+  showErrorToast,
+  showSuccessToast,
+  showWarningToast,
+} from "@repo/rdx-ui/helpers";
+import type { SelectFieldItem } from "@repo/rdx-ui/components";
+import { isValidationErrorCollection, type ValidationErrorCollection } from "@repo/rdx-ddd";
+import { useEffect, useId, useMemo, type SubmitEvent } from "react";
+import type { FieldErrors } from "react-hook-form";
+
+import { useTranslation } from "../../../i18n";
+import { CompanySettingsFormSchema, type CompanySettingsForm } from "../entities";
+import { useCompanySettingsQuery, useCompanySettingsUpdateMutation } from "../shared/hooks";
+import { buildCompanySettingsForm, buildUpdateCompanySettingsParams } from "../utils";
+
+const normalizeSubmitError = (error: unknown): Error | ValidationErrorCollection => {
+  if (isValidationErrorCollection(error)) {
+    return error;
+  }
+
+  if (error instanceof Error) {
+    return error;
+  }
+
+  return new Error("Unknown error");
+};
+
+export const useCompanyDetailsSettingsController = () => {
+  const { t } = useTranslation();
+  const { activeCompany } = useIdentityAuthSession();
+  const companyId = activeCompany?.id;
+  const formId = useId();
+
+  const companyQuery = useCompanySettingsQuery(companyId);
+  const mutation = useCompanySettingsUpdateMutation();
+
+  const paymentTermsQuery = usePaymentTermListQuery({
+    criteria: {
+      pageSize: 200,
+      filters: [
+        {
+          field: "isActive",
+          operator: "EQUALS",
+          value: "true",
+        },
+      ],
+    },
+  });
+
+  const company = companyQuery.data;
+  const currentPaymentTermId = company?.defaultPaymentTermId ?? undefined;
+  const activePaymentTermIds = paymentTermsQuery.data?.items.map((item) => item.id) ?? [];
+  const needsCurrentPaymentTerm = Boolean(
+    currentPaymentTermId && !activePaymentTermIds.includes(currentPaymentTermId)
+  );
+
+  const currentPaymentTermQuery = usePaymentTermDetailQuery(currentPaymentTermId, {
+    enabled: needsCurrentPaymentTerm,
+  });
+
+  const initialValues = useMemo<CompanySettingsForm>(() => {
+    if (!company) {
+      return {
+        defaultPaymentTermId: null,
+      };
+    }
+
+    return buildCompanySettingsForm(company);
+  }, [company]);
+
+  const form = useHookForm<CompanySettingsForm>({
+    resolverSchema: CompanySettingsFormSchema,
+    initialValues,
+    disabled: mutation.isPending,
+  });
+
+  useEffect(() => {
+    if (!company) {
+      return;
+    }
+
+    form.reset(buildCompanySettingsForm(company), {
+      keepDirty: false,
+    });
+  }, [company, form]);
+
+  const paymentTermOptions = useMemo<SelectFieldItem[]>(() => {
+    const options = getPaymentTermOptions(paymentTermsQuery.data?.items ?? []);
+
+    if (currentPaymentTermQuery.data && needsCurrentPaymentTerm) {
+      options.unshift({
+        value: currentPaymentTermQuery.data.id,
+        label: t("settings.companyDetails.sections.paymentTerm.field.currentInactive", {
+          name: currentPaymentTermQuery.data.name,
+        }),
+      });
+    }
+
+    return [
+      {
+        value: "",
+        label: t("settings.companyDetails.sections.paymentTerm.field.none"),
+      },
+      ...options,
+    ];
+  }, [currentPaymentTermQuery.data, needsCurrentPaymentTerm, paymentTermsQuery.data?.items, t]);
+
+  const submitHandler = form.handleSubmit(
+    async (formData) => {
+      if (!companyId) {
+        return;
+      }
+
+      if (!formHasAnyDirty(form.formState.dirtyFields)) {
+        showWarningToast(
+          t("settings.companyDetails.feedback.noChanges.title"),
+          t("settings.companyDetails.feedback.noChanges.message")
+        );
+        return;
+      }
+
+      try {
+        const updated = await mutation.mutateAsync(
+          buildUpdateCompanySettingsParams({
+            companyId,
+            form: formData,
+          })
+        );
+
+        form.reset(buildCompanySettingsForm(updated), {
+          keepDirty: false,
+        });
+
+        showSuccessToast(
+          t("settings.companyDetails.feedback.success.title"),
+          t("settings.companyDetails.feedback.success.message")
+        );
+      } catch (error: unknown) {
+        const normalizedError = normalizeSubmitError(error);
+
+        if (isValidationErrorCollection(normalizedError)) {
+          applyValidationErrorCollection(form, normalizedError);
+          focusFirstInputFormError(form.formState.errors, form);
+          showWarningToast(
+            t("settings.companyDetails.feedback.validation.title"),
+            t("settings.companyDetails.feedback.validation.message")
+          );
+          return;
+        }
+
+        showErrorToast(
+          t("settings.companyDetails.feedback.error.title"),
+          normalizedError.message || t("settings.companyDetails.feedback.error.message")
+        );
+      }
+    },
+    (errors: FieldErrors<CompanySettingsForm>) => {
+      focusFirstInputFormError(errors, form);
+      showWarningToast(
+        t("settings.companyDetails.feedback.validation.title"),
+        getFirstFormErrorMessage(errors, form) ??
+          t("settings.companyDetails.feedback.validation.message")
+      );
+    }
+  );
+
+  const onSubmit = (event: SubmitEvent<HTMLFormElement>) => {
+    event.stopPropagation();
+    submitHandler(event);
+  };
+
+  return {
+    activeCompany,
+    company,
+    companyQuery,
+    form,
+    formId,
+    onSubmit,
+    paymentTermOptions,
+    resetForm: () => {
+      if (!company) {
+        return;
+      }
+
+      form.reset(buildCompanySettingsForm(company), {
+        keepDirty: false,
+      });
+    },
+    isLoading:
+      companyQuery.isLoading ||
+      paymentTermsQuery.isLoading ||
+      (needsCurrentPaymentTerm && currentPaymentTermQuery.isLoading),
+    isRetrying: companyQuery.isFetching && !companyQuery.isLoading,
+    isSaving: mutation.isPending,
+    pageError:
+      companyQuery.error ??
+      paymentTermsQuery.error ??
+      (needsCurrentPaymentTerm ? currentPaymentTermQuery.error : null),
+    retry: async () => {
+      await Promise.all([
+        companyQuery.refetch(),
+        paymentTermsQuery.refetch(),
+        needsCurrentPaymentTerm ? currentPaymentTermQuery.refetch() : Promise.resolve(undefined),
+      ]);
+    },
+  };
+};
--- a/modules/companies/src/web/settings/company-details/entities/company-settings-form.schema.ts
+++ b/modules/companies/src/web/settings/company-details/entities/company-settings-form.schema.ts
@ -0,0 +1,7 @@
+import { z } from "zod/v4";
+
+export const CompanySettingsFormSchema = z.object({
+  defaultPaymentTermId: z.union([z.uuid(), z.literal(""), z.null()]),
+});
+
+export type CompanySettingsForm = z.infer<typeof CompanySettingsFormSchema>;
--- a/modules/companies/src/web/settings/company-details/entities/index.ts
+++ b/modules/companies/src/web/settings/company-details/entities/index.ts
@ -0,0 +1 @@
+export * from "./company-settings-form.schema";
--- a/modules/companies/src/web/settings/company-details/index.ts
+++ b/modules/companies/src/web/settings/company-details/index.ts
@ -0,0 +1 @@
+export * from "./ui/pages/company-details-settings-page";
--- a/modules/companies/src/web/settings/company-details/shared/adapters/company-settings.adapter.ts
+++ b/modules/companies/src/web/settings/company-details/shared/adapters/company-settings.adapter.ts
@ -0,0 +1,13 @@
+import type { CompanyResponseDTO } from "../../../../../common";
+import type { CompanySettings } from "../entities";
+
+export const CompanySettingsAdapter = {
+  fromDto(dto: CompanyResponseDTO): CompanySettings {
+    return {
+      id: dto.id,
+      legalName: dto.legal_name,
+      tradeName: dto.trade_name,
+      defaultPaymentTermId: dto.default_payment_term_id,
+    };
+  },
+};
--- a/modules/companies/src/web/settings/company-details/shared/adapters/index.ts
+++ b/modules/companies/src/web/settings/company-details/shared/adapters/index.ts
@ -0,0 +1 @@
+export * from "./company-settings.adapter";
--- a/modules/companies/src/web/settings/company-details/shared/api/get-company-settings.api.ts
+++ b/modules/companies/src/web/settings/company-details/shared/api/get-company-settings.api.ts
@ -0,0 +1,17 @@
+import type { IDataSource } from "@erp/core/client";
+
+import type { CompanyResponseDTO } from "../../../../../common";
+
+export interface GetCompanySettingsParams {
+  companyId: string;
+  signal?: AbortSignal;
+}
+
+export const getCompanySettings = (
+  dataSource: IDataSource,
+  params: GetCompanySettingsParams
+): Promise<CompanyResponseDTO> => {
+  return dataSource.getOne<CompanyResponseDTO>("companies", params.companyId, {
+    signal: params.signal,
+  });
+};
--- a/modules/companies/src/web/settings/company-details/shared/api/index.ts
+++ b/modules/companies/src/web/settings/company-details/shared/api/index.ts
@ -0,0 +1,2 @@
+export * from "./get-company-settings.api";
+export * from "./update-company-settings.api";
--- a/modules/companies/src/web/settings/company-details/shared/api/update-company-settings.api.ts
+++ b/modules/companies/src/web/settings/company-details/shared/api/update-company-settings.api.ts
@ -0,0 +1,19 @@
+import type { IDataSource } from "@erp/core/client";
+
+import type { CompanyResponseDTO, UpdateCompanyRequestDTO } from "../../../../../common";
+
+export interface UpdateCompanySettingsParams {
+  companyId: string;
+  data: UpdateCompanyRequestDTO;
+}
+
+export const updateCompanySettings = (
+  dataSource: IDataSource,
+  params: UpdateCompanySettingsParams
+): Promise<CompanyResponseDTO> => {
+  return dataSource.updateOne<UpdateCompanyRequestDTO, CompanyResponseDTO>(
+    "companies",
+    params.companyId,
+    params.data
+  );
+};
--- a/modules/companies/src/web/settings/company-details/shared/entities/company-settings.entity.ts
+++ b/modules/companies/src/web/settings/company-details/shared/entities/company-settings.entity.ts
@ -0,0 +1,6 @@
+export interface CompanySettings {
+  id: string;
+  legalName: string;
+  tradeName: string | null;
+  defaultPaymentTermId: string | null;
+}
--- a/modules/companies/src/web/settings/company-details/shared/entities/index.ts
+++ b/modules/companies/src/web/settings/company-details/shared/entities/index.ts
@ -0,0 +1 @@
+export * from "./company-settings.entity";
--- a/modules/companies/src/web/settings/company-details/shared/hooks/index.ts
+++ b/modules/companies/src/web/settings/company-details/shared/hooks/index.ts
@ -0,0 +1,2 @@
+export * from "./use-company-settings-query";
+export * from "./use-company-settings-update-mutation";
--- a/modules/companies/src/web/settings/company-details/shared/hooks/keys.ts
+++ b/modules/companies/src/web/settings/company-details/shared/hooks/keys.ts
@ -0,0 +1,8 @@
+export const COMPANY_SETTINGS_QUERY_KEY = (companyId?: string) =>
+  ["companies", "settings", "detail", { companyId }] as const;
+
+export const UPDATE_COMPANY_SETTINGS_MUTATION_KEY = [
+  "companies",
+  "settings",
+  "update",
+] as const;
--- a/modules/companies/src/web/settings/company-details/shared/hooks/use-company-settings-query.ts
+++ b/modules/companies/src/web/settings/company-details/shared/hooks/use-company-settings-query.ts
@ -0,0 +1,27 @@
+import { useDataSource } from "@erp/core/hooks";
+import { type DefaultError, type UseQueryResult, useQuery } from "@tanstack/react-query";
+
+import { CompanySettingsAdapter } from "../adapters";
+import { getCompanySettings } from "../api";
+import type { CompanySettings } from "../entities";
+
+import { COMPANY_SETTINGS_QUERY_KEY } from "./keys";
+
+export const useCompanySettingsQuery = (
+  companyId?: string
+): UseQueryResult<CompanySettings, DefaultError> => {
+  const dataSource = useDataSource();
+
+  return useQuery<CompanySettings, DefaultError>({
+    queryKey: COMPANY_SETTINGS_QUERY_KEY(companyId),
+    enabled: Boolean(companyId),
+    queryFn: async ({ signal }) => {
+      const dto = await getCompanySettings(dataSource, {
+        companyId: companyId as string,
+        signal,
+      });
+
+      return CompanySettingsAdapter.fromDto(dto);
+    },
+  });
+};
--- a/modules/companies/src/web/settings/company-details/shared/hooks/use-company-settings-update-mutation.ts
+++ b/modules/companies/src/web/settings/company-details/shared/hooks/use-company-settings-update-mutation.ts
@ -0,0 +1,39 @@
+import { useDataSource } from "@erp/core/hooks";
+import { ValidationErrorCollection } from "@repo/rdx-ddd";
+import { type DefaultError, useMutation, useQueryClient } from "@tanstack/react-query";
+
+import { UpdateCompanyRequestSchema } from "../../../../../common";
+import { CompanySettingsAdapter } from "../adapters";
+import type { UpdateCompanySettingsParams } from "../api";
+import { updateCompanySettings } from "../api";
+import type { CompanySettings } from "../entities";
+
+import { COMPANY_SETTINGS_QUERY_KEY, UPDATE_COMPANY_SETTINGS_MUTATION_KEY } from "./keys";
+
+const toValidationErrors = (issues: { path: PropertyKey[]; message: string }[]) =>
+  issues.map((issue) => ({
+    path: issue.path.map(String).join("."),
+    message: issue.message,
+  }));
+
+export const useCompanySettingsUpdateMutation = () => {
+  const queryClient = useQueryClient();
+  const dataSource = useDataSource();
+
+  return useMutation<CompanySettings, DefaultError, UpdateCompanySettingsParams>({
+    mutationKey: UPDATE_COMPANY_SETTINGS_MUTATION_KEY,
+    mutationFn: async (params) => {
+      const result = UpdateCompanyRequestSchema.safeParse(params.data);
+
+      if (!result.success) {
+        throw new ValidationErrorCollection("Validation failed", toValidationErrors(result.error.issues));
+      }
+
+      const dto = await updateCompanySettings(dataSource, params);
+      return CompanySettingsAdapter.fromDto(dto);
+    },
+    onSuccess: async (company) => {
+      queryClient.setQueryData(COMPANY_SETTINGS_QUERY_KEY(company.id), company);
+    },
+  });
+};
--- a/modules/companies/src/web/settings/company-details/ui/pages/company-details-settings-page.tsx
+++ b/modules/companies/src/web/settings/company-details/ui/pages/company-details-settings-page.tsx
@ -0,0 +1,117 @@
+import { ErrorAlert, PageErrorState } from "@erp/core/components";
+import { UnsavedChangesProvider } from "@erp/core/hooks";
+import {
+  AppContent,
+  CancelActionButton,
+  RdxEditorSection,
+  RdxEditorStickyFooter,
+  RdxFormGrid,
+  RhfSubmitActionButton,
+  SelectField,
+} from "@repo/rdx-ui/components";
+import { LandmarkIcon } from "lucide-react";
+import { FormProvider } from "react-hook-form";
+
+import { useTranslation } from "../../../../i18n";
+import { useCompanyDetailsSettingsController } from "../../controllers";
+
+export const CompanyDetailsSettingsPage = () => {
+  const { t } = useTranslation();
+  const ctrl = useCompanyDetailsSettingsController();
+
+  if (ctrl.isLoading) {
+    return <AppContent className="py-2" />;
+  }
+
+  if (ctrl.pageError) {
+    return (
+      <AppContent className="py-2">
+        <PageErrorState
+          description={t("settings.companyDetails.pageError.description")}
+          primaryAction={{
+            label: ctrl.isRetrying
+              ? t("settings.companyDetails.pageError.retrying")
+              : t("settings.companyDetails.pageError.retry"),
+            onClick: ctrl.retry,
+            isLoading: ctrl.isRetrying,
+          }}
+          title={t("settings.companyDetails.pageError.title")}
+          variant="server"
+        />
+      </AppContent>
+    );
+  }
+
+  return (
+    <FormProvider {...ctrl.form}>
+      <UnsavedChangesProvider isDirty={ctrl.form.formState.isDirty}>
+        <div className="flex min-h-[24rem] flex-col gap-6">
+          <div className="space-y-2">
+            <h2 className="text-2xl font-semibold tracking-tight">
+              {t("settings.companyDetails.title")}
+            </h2>
+            <p className="max-w-3xl text-sm text-muted-foreground">
+              {t("settings.companyDetails.description")}
+            </p>
+          </div>
+
+          {ctrl.companyQuery.isError ? (
+            <ErrorAlert
+              message={(ctrl.companyQuery.error as Error)?.message ?? undefined}
+              title={t("settings.companyDetails.feedback.error.title")}
+            />
+          ) : null}
+
+          <form className="flex flex-col gap-6" id={ctrl.formId} noValidate onSubmit={ctrl.onSubmit}>
+            <RdxEditorSection
+              description={t("settings.companyDetails.sections.paymentTerm.description")}
+              icon={<LandmarkIcon className="size-5" />}
+              title={t("settings.companyDetails.sections.paymentTerm.title")}
+              variant="panel"
+            >
+              <RdxFormGrid className="md:grid-cols-2">
+                <SelectField
+                  clearable
+                  className="col-span-full"
+                  description={t("settings.companyDetails.sections.paymentTerm.field.description")}
+                  disabled={ctrl.isSaving}
+                  emptyValue=""
+                  items={ctrl.paymentTermOptions}
+                  label={t("settings.companyDetails.sections.paymentTerm.field.label")}
+                  name="defaultPaymentTermId"
+                  placeholder={t("settings.companyDetails.sections.paymentTerm.field.placeholder")}
+                />
+              </RdxFormGrid>
+            </RdxEditorSection>
+          </form>
+
+          <p aria-live="polite" className="sr-only">
+            {ctrl.isSaving
+              ? t("settings.companyDetails.feedback.saving")
+              : t("settings.companyDetails.feedback.idle")}
+          </p>
+
+          <RdxEditorStickyFooter
+            primary={
+              <RhfSubmitActionButton
+                busyLabel={t("settings.companyDetails.actions.saving")}
+                disabled={ctrl.isSaving}
+                formId={ctrl.formId}
+                isBusy={ctrl.form.formState.isSubmitting}
+                label={t("settings.companyDetails.actions.save")}
+              />
+            }
+            secondary={
+              <CancelActionButton
+                disabled={ctrl.isSaving || !ctrl.form.formState.isDirty}
+                label={t("settings.companyDetails.actions.reset")}
+                onCancel={ctrl.resetForm}
+                variant="outline"
+              />
+            }
+          />
+        </div>
+      </UnsavedChangesProvider>
+    </FormProvider>
+  );
+};
--- a/modules/companies/src/web/settings/company-details/utils/build-company-settings-form.ts
+++ b/modules/companies/src/web/settings/company-details/utils/build-company-settings-form.ts
@ -0,0 +1,6 @@
+import type { CompanySettingsForm } from "../entities";
+import type { CompanySettings } from "../shared/entities";
+
+export const buildCompanySettingsForm = (company: CompanySettings): CompanySettingsForm => ({
+  defaultPaymentTermId: company.defaultPaymentTermId,
+});
--- a/modules/companies/src/web/settings/company-details/utils/build-update-company-settings-params.test.ts
+++ b/modules/companies/src/web/settings/company-details/utils/build-update-company-settings-params.test.ts
@ -0,0 +1,45 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { buildUpdateCompanySettingsParams } from "./build-update-company-settings-params";
+
+test("normaliza vacio a null", () => {
+  const result = buildUpdateCompanySettingsParams({
+    companyId: "11111111-1111-4111-8111-111111111111",
+    form: {
+      defaultPaymentTermId: "",
+    },
+  });
+
+  assert.deepEqual(result, {
+    companyId: "11111111-1111-4111-8111-111111111111",
+    data: {
+      default_payment_term_id: null,
+    },
+  });
+});
+
+test("conserva null explicito", () => {
+  const result = buildUpdateCompanySettingsParams({
+    companyId: "11111111-1111-4111-8111-111111111111",
+    form: {
+      defaultPaymentTermId: null,
+    },
+  });
+
+  assert.equal(result.data.default_payment_term_id, null);
+});
+
+test("envia la seleccion valida", () => {
+  const result = buildUpdateCompanySettingsParams({
+    companyId: "11111111-1111-4111-8111-111111111111",
+    form: {
+      defaultPaymentTermId: "22222222-2222-4222-8222-222222222222",
+    },
+  });
+
+  assert.equal(
+    result.data.default_payment_term_id,
+    "22222222-2222-4222-8222-222222222222"
+  );
+});
--- a/modules/companies/src/web/settings/company-details/utils/build-update-company-settings-params.ts
+++ b/modules/companies/src/web/settings/company-details/utils/build-update-company-settings-params.ts
@ -0,0 +1,20 @@
+import type { UpdateCompanyRequestDTO } from "../../../../../common";
+import type { CompanySettingsForm } from "../entities";
+
+export const buildUpdateCompanySettingsParams = (params: {
+  companyId: string;
+  form: CompanySettingsForm;
+}): {
+  companyId: string;
+  data: UpdateCompanyRequestDTO;
+} => {
+  return {
+    companyId: params.companyId,
+    data: {
+      default_payment_term_id:
+        params.form.defaultPaymentTermId == null || params.form.defaultPaymentTermId === ""
+          ? null
+          : params.form.defaultPaymentTermId,
+    },
+  };
+};
--- a/modules/companies/src/web/settings/company-details/utils/index.ts
+++ b/modules/companies/src/web/settings/company-details/utils/index.ts
@ -0,0 +1,2 @@
+export * from "./build-company-settings-form";
+export * from "./build-update-company-settings-params";
--- a/modules/companies/tsconfig.json
+++ b/modules/companies/tsconfig.json
@ -7,7 +7,7 @@
    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
    "target": "ES2022",
    "useDefineForClassFields": true,
-    "lib": ["ES2022"],
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "skipLibCheck": true,
    "moduleResolution": "bundler",
@ -15,6 +15,7 @@
    "isolatedModules": true,
    "moduleDetection": "force",
    "noEmit": true,
+    "jsx": "react-jsx",
    "strict": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
--- a/modules/customer-invoices/src/api/application/common/models/index.ts
+++ b/modules/customer-invoices/src/api/application/common/models/index.ts
@ -1,2 +1,3 @@
 export * from "./invoice-payment-method-read.model";
+export * from "./invoice-payment-term-read.model";
 export * from "./invoice-tax-regime-full-read.model";
--- a/modules/customer-invoices/src/api/application/common/models/invoice-payment-term-read.model.ts
+++ b/modules/customer-invoices/src/api/application/common/models/invoice-payment-term-read.model.ts
@ -0,0 +1,16 @@
+/**
+ * Datos del plazo de pago que completan a la proforma.
+ */
+export interface InvoicePaymentTermReadModel {
+  id: string;
+  name: string;
+  description: string;
+  isActive: boolean;
+  dueRules: Array<{
+    dueDays: string;
+    percentage: {
+      value: string;
+      scale: number;
+    };
+  }>;
+}
--- a/modules/customer-invoices/src/api/application/issued-invoices/models/proforma-issue-read.model.ts
+++ b/modules/customer-invoices/src/api/application/issued-invoices/models/proforma-issue-read.model.ts
@ -3,7 +3,9 @@ import type { Proforma } from "../../../domain";
 import type {
  InvocieTaxRegimeFullReadModel,
  InvoicePaymentMethodReadModel,
+  InvoicePaymentTermReadModel,
 } from "../../common/models";
+import type { Maybe } from "@repo/rdx-utils";

 /**
 * Modelo de lectura usado exclusivamente durante la emisión de una proforma.
@ -14,6 +16,7 @@ import type {
 export interface ProformaIssueReadModel {
  proforma: Proforma;
  paymentMethod: InvoicePaymentMethodReadModel;
+  paymentTerm: Maybe<InvoicePaymentTermReadModel>;
  taxRegime: InvocieTaxRegimeFullReadModel;
  fiscalClassification: {
    operationQualificationCode: string | null;
--- a/modules/customer-invoices/src/api/application/issued-invoices/services/issued-invoice-document-metadata-factory.test.ts
+++ b/modules/customer-invoices/src/api/application/issued-invoices/services/issued-invoice-document-metadata-factory.test.ts
@ -0,0 +1,45 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { IssuedInvoiceDocumentMetadataFactory } from "./issued-invoice-document-metadata-factory";
+
+test("normaliza locales compuestos para resolver el template FastReport efectivo", () => {
+  const factory = new IssuedInvoiceDocumentMetadataFactory();
+
+  const metadata = factory.build({
+    id: "11111111-1111-4111-8111-111111111111",
+    company_id: "22222222-2222-4222-8222-222222222222",
+    company_slug: "rodax",
+    invoice_number: "12",
+    invoice_reference: "A-12",
+    series: "A",
+    status: "issued",
+    reference: null,
+    language_code: "es-ES",
+    currency_code: "EUR",
+    invoice_date: "17/08/2026",
+    payment_method: "Transferencia",
+    payment_term: "30 días",
+    notes: "",
+    recipient: {
+      name: "Acme Labs",
+      tin: "B12345678",
+      format_address: "Calle Mayor 1",
+    },
+    items: [],
+    taxes: [],
+    subtotal_amount: "100,00",
+    discount_percentage: "0,00 %",
+    discount_amount: "0,00",
+    taxable_amount: "100,00",
+    taxes_amount: "21,00",
+    total_amount: "121,00",
+    verifactu: {
+      status: "Correcto",
+      url: "",
+      qr_code: "",
+    },
+  });
+
+  assert.equal(metadata.languageCode, "es");
+});
--- a/modules/customer-invoices/src/api/application/issued-invoices/services/issued-invoice-document-metadata-factory.ts
+++ b/modules/customer-invoices/src/api/application/issued-invoices/services/issued-invoice-document-metadata-factory.ts
@ -27,23 +27,28 @@ export class IssuedInvoiceDocumentMetadataFactory
      companyId: snapshot.company_id,
      companySlug: snapshot.company_slug,
      format: "PDF",
-      languageCode: snapshot.language_code ?? "es",
+      languageCode: this.normalizeLanguageCode(snapshot.language_code),
      filename: this.buildFilename(snapshot),
      storageKey: this.buildCacheKey(snapshot),
    };
  }

+  private normalizeLanguageCode(languageCode: string | undefined): string {
+    const normalized = (languageCode ?? "es").trim();
+
+    if (!normalized) {
+      return "es";
+    }
+
+    return normalized.split(/[-_]/, 1)[0]?.toLowerCase() ?? "es";
+  }
+
  private buildFilename(snapshot: IIssuedInvoiceReportSnapshot): string {
    return `factura-${snapshot.invoice_reference}-${snapshot.recipient.name}.pdf`;
  }

  private buildCacheKey(snapshot: IIssuedInvoiceReportSnapshot): string {
    // Versionado explícito para invalidaciones futuras
-    return [
-      "issued-invoice",
-      snapshot.company_id,
-      snapshot.invoice_reference,
-      "v1",
-    ].join(":");
+    return ["issued-invoice", snapshot.company_id, snapshot.invoice_reference, "v1"].join(":");
  }
 }
--- a/modules/customer-invoices/src/api/application/issued-invoices/services/proforma-to-issued-invoice-props-converter.ts
+++ b/modules/customer-invoices/src/api/application/issued-invoices/services/proforma-to-issued-invoice-props-converter.ts
@ -1,11 +1,12 @@
 // modules/customer-invoices/src/api/application/issued-invoices/services/proforma-to-issued-invoice-props-converter.ts

-import { UtcDate } from "@repo/rdx-ddd";
+import { UniqueID, UtcDate } from "@repo/rdx-ddd";
 import { Maybe, Result } from "@repo/rdx-utils";

 import {
  type IIssuedInvoiceCreateProps,
  InvoicePaymentMethod,
+  InvoicePaymentTerm,
  type InvoiceSerie,
  InvoiceStatus,
  InvoiceTaxRegime,
@ -66,6 +67,12 @@ export class ProformaToIssuedInvoiceConverter implements IProformaToIssuedInvoic
      return Result.fail(paymentResult.error);
    }

+    const paymentTermResult = this.resolvePaymentTerm(source);
+
+    if (paymentTermResult.isFailure) {
+      return Result.fail(paymentTermResult.error);
+    }
+
    const taxRegimeResult = this.resolveTaxRegime(source);

    if (taxRegimeResult.isFailure) {
@ -105,6 +112,7 @@ export class ProformaToIssuedInvoiceConverter implements IProformaToIssuedInvoic
      reference: proforma.reference,

      paymentMethod: paymentResult.data,
+      paymentTerm: paymentTermResult.data,
      taxRegime: taxRegimeResult.data,
      fiscalClassification: Maybe.some(fiscalClassificationResult.data),
      verifactuPolicy: Maybe.some(verifactuPolicyResult.data),
@ -282,6 +290,45 @@ export class ProformaToIssuedInvoiceConverter implements IProformaToIssuedInvoic
    return Result.ok(paymentMethodResult.data);
  }

+  private resolvePaymentTerm(
+    source: ProformaIssueReadModel
+  ): Result<Maybe<InvoicePaymentTerm>, Error> {
+    if (source.paymentTerm.isNone()) {
+      return Result.ok(Maybe.none());
+    }
+
+    const paymentTerm = source.paymentTerm.unwrap();
+    const paymentTermIdResult = UniqueID.create(paymentTerm.id);
+
+    if (paymentTermIdResult.isFailure) {
+      return Result.fail(paymentTermIdResult.error);
+    }
+
+    const paymentTermResult = InvoicePaymentTerm.create(
+      {
+        name: paymentTerm.name,
+        description:
+          paymentTerm.description.trim().length > 0
+            ? Maybe.some(paymentTerm.description)
+            : Maybe.none<string>(),
+        dueRules: paymentTerm.dueRules.map((rule) => ({
+          dueDays: rule.dueDays,
+          percentage: {
+            value: rule.percentage.value,
+            scale: rule.percentage.scale,
+          },
+        })),
+      },
+      paymentTermIdResult.data
+    );
+
+    if (paymentTermResult.isFailure) {
+      return Result.fail(paymentTermResult.error);
+    }
+
+    return Result.ok(Maybe.some(paymentTermResult.data));
+  }
+
  private resolveTaxRegime(source: ProformaIssueReadModel): Result<InvoiceTaxRegime, Error> {
    const taxRegimeResult = InvoiceTaxRegime.create({
      code: source.taxRegime.code,
--- a/modules/customer-invoices/src/api/application/issued-invoices/snapshot-builders/full/issued-invoice-full-snapshot-builder.ts
+++ b/modules/customer-invoices/src/api/application/issued-invoices/snapshot-builders/full/issued-invoice-full-snapshot-builder.ts
@ -32,6 +32,18 @@ export class IssuedInvoiceFullSnapshotBuilder implements IIssuedInvoiceFullSnaps
      name: invoice.paymentMethod.name.toString(),
      description: invoice.paymentMethod.name.toString(),
    };
+    const payment_term = maybeToNullable(invoice.paymentTerm, (paymentTerm) => ({
+      id: paymentTerm.id.toString(),
+      name: paymentTerm.name,
+      description: paymentTerm.description.getOrUndefined() ?? null,
+      due_rules: paymentTerm.dueRules.map((rule) => ({
+        due_days: rule.dueDays,
+        percentage: {
+          value: rule.percentage.value,
+          scale: rule.percentage.scale,
+        },
+      })),
+    }));

    const tax_regime = {
      code: invoice.taxRegime.code,
@ -74,6 +86,7 @@ export class IssuedInvoiceFullSnapshotBuilder implements IIssuedInvoiceFullSnaps
      taxes,

      payment_method,
+      payment_term,
      tax_regime,
      fiscal_classification,
      verifactu_policy,
--- a/modules/customer-invoices/src/api/application/issued-invoices/snapshot-builders/full/issued-invoice-full-snapshot.interface.ts
+++ b/modules/customer-invoices/src/api/application/issued-invoices/snapshot-builders/full/issued-invoice-full-snapshot.interface.ts
@ -47,6 +47,18 @@ export interface IIssuedInvoiceFullSnapshot {
    name: string;
    description: string;
  } | null;
+  payment_term: {
+    id: string;
+    name: string;
+    description: string | null;
+    due_rules: Array<{
+      due_days: string;
+      percentage: {
+        value: string;
+        scale: number;
+      };
+    }>;
+  } | null;
  tax_regime: {
    code: string;
    description: string | null;
--- a/modules/customer-invoices/src/api/application/issued-invoices/snapshot-builders/report/issued-invoice-report-snapshot-builder.test.ts
+++ b/modules/customer-invoices/src/api/application/issued-invoices/snapshot-builders/report/issued-invoice-report-snapshot-builder.test.ts
@ -0,0 +1,98 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { MoneyDTOHelper, PercentageDTOHelper } from "@erp/core";
+
+import { IssuedInvoiceReportSnapshotBuilder } from "./issued-invoice-report-snapshot-builder";
+
+test("reporting usa el payment term histórico del snapshot emitido", () => {
+  const builder = new IssuedInvoiceReportSnapshotBuilder(
+    {
+      toOutput: () => [],
+    } as never,
+    {
+      toOutput: () => [],
+    } as never
+  );
+
+  const snapshot = builder.toOutput({
+    id: "11111111-1111-4111-8111-111111111111",
+    company_id: "22222222-2222-4222-8222-222222222222",
+    document_series_id: null,
+    invoice_series_code: "A",
+    invoice_number: "12",
+    invoice_reference: "A-12",
+    status: "issued",
+    series: "A",
+    invoice_date: "2026-08-10",
+    operation_date: null,
+    reference: null,
+    description: "Factura de prueba",
+    notes: null,
+    language_code: "es-ES",
+    currency_code: "EUR",
+    customer_id: "33333333-3333-4333-8333-333333333333",
+    recipient: {
+      id: "44444444-4444-4444-8444-444444444444",
+      name: "Acme Labs",
+      tin: "B12345678",
+      street: "Calle Mayor 1",
+      street2: null,
+      city: "Madrid",
+      province: "Madrid",
+      postal_code: "28001",
+      country: "es",
+    },
+    linked_proforma_id: "55555555-5555-4555-8555-555555555555",
+    taxes: [],
+    payment_method: {
+      id: "66666666-6666-4666-8666-666666666666",
+      name: "Transferencia",
+      description: "Transferencia bancaria",
+    },
+    payment_term: {
+      id: "77777777-7777-4777-8777-777777777777",
+      name: "30 días",
+      description: "Pago estándar",
+      due_rules: [
+        {
+          due_days: "30",
+          percentage: {
+            value: "10000",
+            scale: 2,
+          },
+        },
+      ],
+    },
+    tax_regime: {
+      code: "general",
+      description: "Régimen general",
+    },
+    fiscal_classification: null,
+    verifactu_policy: null,
+    subtotal_amount: MoneyDTOHelper.fromNumber(100, "EUR"),
+    items_discount_amount: MoneyDTOHelper.fromNumber(0, "EUR"),
+    global_discount_percentage: PercentageDTOHelper.fromNumber(0),
+    global_discount_amount: MoneyDTOHelper.fromNumber(0, "EUR"),
+    total_discount_amount: MoneyDTOHelper.fromNumber(0, "EUR"),
+    taxable_amount: MoneyDTOHelper.fromNumber(100, "EUR"),
+    iva_amount: MoneyDTOHelper.fromNumber(21, "EUR"),
+    rec_amount: MoneyDTOHelper.fromNumber(0, "EUR"),
+    retention_amount: MoneyDTOHelper.fromNumber(0, "EUR"),
+    taxes_amount: MoneyDTOHelper.fromNumber(21, "EUR"),
+    total_amount: MoneyDTOHelper.fromNumber(121, "EUR"),
+    verifactu: {
+      id: "88888888-8888-4888-8888-888888888888",
+      status: "Correcto",
+      url: null,
+      qr_code: null,
+    },
+    items: [],
+    metadata: {
+      entity: "issued-invoices",
+    },
+  });
+
+  assert.equal(snapshot.payment_method, "Transferencia bancaria");
+  assert.equal(snapshot.payment_term, "30 días");
+});
--- a/modules/customer-invoices/src/api/application/issued-invoices/snapshot-builders/report/issued-invoice-report-snapshot-builder.ts
+++ b/modules/customer-invoices/src/api/application/issued-invoices/snapshot-builders/report/issued-invoice-report-snapshot-builder.ts
@ -43,7 +43,8 @@ export class IssuedInvoiceReportSnapshotBuilder implements IIssuedInvoiceReportS

      invoice_date: DateHelper.format(snapshot.invoice_date, locale),

-      payment_method: snapshot.payment_method?.payment_description ?? "",
+      payment_method: snapshot.payment_method?.description ?? snapshot.payment_method?.name ?? "",
+      payment_term: snapshot.payment_term?.name ?? "",
      notes: snapshot.notes ?? "",

      recipient: {
--- a/modules/customer-invoices/src/api/application/issued-invoices/snapshot-builders/report/issued-invoice-report-snapshot.interface.ts
+++ b/modules/customer-invoices/src/api/application/issued-invoices/snapshot-builders/report/issued-invoice-report-snapshot.interface.ts
@ -16,6 +16,7 @@ export interface IIssuedInvoiceReportSnapshot {

  invoice_date: string;
  payment_method: string;
+  payment_term: string;
  notes: string;

  recipient: {
--- a/modules/customer-invoices/src/api/application/proformas/di/proforma-creator.di.ts
+++ b/modules/customer-invoices/src/api/application/proformas/di/proforma-creator.di.ts
@ -1,3 +1,4 @@
+import type { ICompanyPublicServices } from "@erp/companies/api";
 import type { ICustomerPublicServices } from "@erp/customers/api";

 import type { IProformaRepository } from "../repositories";
@ -18,6 +19,7 @@ export const buildProformaCreator = (params: {
  repository: IProformaRepository;
  proformaSeriesValidator: ProformaSeriesValidator;
  targetInvoiceSeriesValidator: ProformaTargetInvoiceSeriesValidator;
+  companiesServices: ICompanyPublicServices;
  customerServices: ICustomerPublicServices;
 }): IProformaCreator => {
  return new ProformaCreator(params);
--- a/modules/customer-invoices/src/api/application/proformas/di/proforma-issuer.di.ts
+++ b/modules/customer-invoices/src/api/application/proformas/di/proforma-issuer.di.ts
@ -1,4 +1,8 @@
-import type { IPaymentMethodPublicFinder, ITaxRegimePublicFinder } from "@erp/catalogs/api";
+import type {
+  IPaymentMethodPublicFinder,
+  IPaymentTermPublicFinder,
+  ITaxRegimePublicFinder,
+} from "@erp/catalogs/api";
 import type { ICustomerPublicServices } from "@erp/customers/api";

 import type { IProformaToIssuedInvoiceConverter } from "../../issued-invoices";
@ -15,12 +19,14 @@ export const buildProformaIssuer = (params: {

 export const buildProformaIssueReadModelAssembler = (params: {
  paymentMethodFinder: IPaymentMethodPublicFinder;
+  paymentTermFinder: IPaymentTermPublicFinder;
  taxRegimeFinder: ITaxRegimePublicFinder;
  customerServices: ICustomerPublicServices;
  companyVerifactuProfileRepository: ICompanyVerifactuProfileRepository;
 }) => {
  return new ProformaIssueReadModelAssembler({
    paymentMethodFinder: params.paymentMethodFinder,
+    paymentTermFinder: params.paymentTermFinder,
    taxRegimeFinder: params.taxRegimeFinder,
    customerServices: params.customerServices,
    companyVerifactuProfileRepository: params.companyVerifactuProfileRepository,
--- a/modules/customer-invoices/src/api/application/proformas/di/proforma-read-model-assemblers.di.ts
+++ b/modules/customer-invoices/src/api/application/proformas/di/proforma-read-model-assemblers.di.ts
@ -1,4 +1,8 @@
-import type { IPaymentMethodPublicFinder, ITaxRegimePublicFinder } from "@erp/catalogs/api";
+import type {
+  IPaymentMethodPublicFinder,
+  IPaymentTermPublicFinder,
+  ITaxRegimePublicFinder,
+} from "@erp/catalogs/api";

 import { type IProformaFullReadModelAssembler, ProformaFullReadModelAssembler } from "../services";

@ -8,11 +12,13 @@ export interface IProformaReadModelAssemblers {

 export function buildProformaReadModelAssemblers(params: {
  paymentMethodFinder: IPaymentMethodPublicFinder;
+  paymentTermFinder: IPaymentTermPublicFinder;
  taxRegimeFinder: ITaxRegimePublicFinder;
 }): IProformaReadModelAssemblers {
  return {
    full: new ProformaFullReadModelAssembler({
      paymentMethodFinder: params.paymentMethodFinder,
+      paymentTermFinder: params.paymentTermFinder,
      taxRegimeFinder: params.taxRegimeFinder,
    }),
  };
--- a/modules/customer-invoices/src/api/application/proformas/di/proforma-updater.di.ts
+++ b/modules/customer-invoices/src/api/application/proformas/di/proforma-updater.di.ts
@ -1,4 +1,6 @@
 // modules/customer-invoices/src/api/application/proformas/di/proforma-updater.di.ts
+import type { ICustomerPublicServices } from "@erp/customers/api";
+
 import type { IProformaRepository } from "../repositories";
 import type { ProformaPaymentResolver } from "../services";
 import {
@ -13,6 +15,7 @@ export const buildProformaUpdater = (params: {
  taxResolver: ProformaTaxResolver;
  paymentResolver: ProformaPaymentResolver;
  targetInvoiceSeriesValidator: ProformaTargetInvoiceSeriesValidator;
+  customerServices: ICustomerPublicServices;
 }): IProformaUpdater => {
  return new ProformaUpdater(params);
 };
--- a/modules/customer-invoices/src/api/application/proformas/di/proforma-use-cases.di.ts
+++ b/modules/customer-invoices/src/api/application/proformas/di/proforma-use-cases.di.ts
@ -1,4 +1,7 @@
+import type { IPaymentTermPublicFinder } from "@erp/catalogs/api";
+import type { ICompanyPublicServices } from "@erp/companies/api";
 import type { ITransactionManager } from "@erp/core/api";
+import type { ICustomerPublicServices } from "@erp/customers/api";

 import type { IIssuedInvoicePublicServices } from "../../issued-invoices";
 import type { ICreateProformaInputMapper, IUpdateProformaInputMapper } from "../mappers";
@ -127,6 +130,9 @@ export function buildDuplicateProformaByIdUseCase(deps: {
  fullReadModelAssembler: IProformaFullReadModelAssembler;
  fullSnapshotBuilder: IProformaFullSnapshotBuilder;
  documentSeriesServices: import("@erp/document-series/api").DocumentSeriesPublicServicesType;
+  companiesServices: ICompanyPublicServices;
+  customerServices: ICustomerPublicServices;
+  paymentTermFinder: IPaymentTermPublicFinder;
  transactionManager: ITransactionManager;
 }) {
  return new DuplicateProformaByIdUseCase({
@ -135,6 +141,9 @@ export function buildDuplicateProformaByIdUseCase(deps: {
    fullReadModelAssembler: deps.fullReadModelAssembler,
    fullSnapshotBuilder: deps.fullSnapshotBuilder,
    documentSeriesServices: deps.documentSeriesServices,
+    companiesServices: deps.companiesServices,
+    customerServices: deps.customerServices,
+    paymentTermFinder: deps.paymentTermFinder,
    transactionManager: deps.transactionManager,
  });
 }
--- a/modules/customer-invoices/src/api/application/proformas/mappers/create-proforma-input.mapper.ts
+++ b/modules/customer-invoices/src/api/application/proformas/mappers/create-proforma-input.mapper.ts
@ -130,6 +130,12 @@ export class CreateProformaInputMapper implements ICreateProformaInputMapper {
        errors
      );

+      const paymentTermId = extractOrPushError(
+        maybeFromNullableResult(dto.payment_term_id, (value) => UniqueID.create(value)),
+        "payment_term_id",
+        errors
+      );
+
      const taxRegimeCode = extractOrPushError(
        maybeFromNullableResult(dto.tax_regime_code, (value) => Result.ok(String(value))),
        "tax_regime_code",
@ -172,6 +178,7 @@ export class CreateProformaInputMapper implements ICreateProformaInputMapper {
        taxRegimeCode: taxRegimeCode!,
        taxConfig,
        paymentMethodId: paymentMethodId!,
+        paymentTermId: dto.payment_term_id === undefined ? undefined : paymentTermId!,

        globalDiscountPercentage: globalDiscountPercentage!,
        items,
--- a/modules/customer-invoices/src/api/application/proformas/mappers/update-proforma-input.mapper.ts
+++ b/modules/customer-invoices/src/api/application/proformas/mappers/update-proforma-input.mapper.ts
@ -182,6 +182,14 @@ export class UpdateProformaInputMapper implements IUpdateProformaInputMapper {
        );
      });

+      toPatchField(dto.payment_term_id).ifSet((paymentTermId) => {
+        proformaPatchProps.paymentTermId = extractOrPushError(
+          maybeFromNullableResult(paymentTermId, (value) => UniqueID.create(value)),
+          "payment_term_id",
+          errors
+        );
+      });
+
      toPatchField(dto.tax_regime_code).ifSet((taxRegimeCode) => {
        proformaPatchProps.taxRegimeCode = extractOrPushError(
          maybeFromNullableResult(taxRegimeCode, (value) => Result.ok(String(value))),
--- a/modules/customer-invoices/src/api/application/proformas/models/proforma-create-input.model.ts
+++ b/modules/customer-invoices/src/api/application/proformas/models/proforma-create-input.model.ts
@ -1,3 +1,4 @@
+import type { UniqueID } from "@repo/rdx-ddd";
 import type { Maybe } from "@repo/rdx-utils";

 import type {
@ -37,9 +38,11 @@ export type ProformaCreateInputProps = Omit<
  | "series"
  | "taxConfig"
  | "archivedAt"
+  | "paymentTermId"
 > & {
  proformaSeriesCode: Maybe<InvoiceSerie>;
  targetInvoiceSeriesCode: Maybe<InvoiceSerie>;
+  paymentTermId?: Maybe<UniqueID>;
  taxConfig?: ProformaTaxConfigInputProps;
  items: ProformaItemCreateInputProps[];
 };
--- a/modules/customer-invoices/src/api/application/proformas/models/proforma-full-read.model.ts
+++ b/modules/customer-invoices/src/api/application/proformas/models/proforma-full-read.model.ts
@ -4,6 +4,7 @@ import type { Proforma } from "../../../domain";
 import type {
  InvocieTaxRegimeFullReadModel,
  InvoicePaymentMethodReadModel,
+  InvoicePaymentTermReadModel,
 } from "../../common/models";

 /**
@ -15,5 +16,6 @@ import type {
 export interface ProformaFullReadModel {
  proforma: Proforma;
  paymentMethod: Maybe<InvoicePaymentMethodReadModel>;
+  paymentTerm: Maybe<InvoicePaymentTermReadModel>;
  taxRegime: Maybe<InvocieTaxRegimeFullReadModel>;
 }
--- a/modules/customer-invoices/src/api/application/proformas/services/assemblers/proforma-full-read-model.assembler.ts
+++ b/modules/customer-invoices/src/api/application/proformas/services/assemblers/proforma-full-read-model.assembler.ts
@ -1,4 +1,8 @@
-import type { IPaymentMethodPublicFinder, ITaxRegimePublicFinder } from "@erp/catalogs/api";
+import type {
+  IPaymentMethodPublicFinder,
+  IPaymentTermPublicFinder,
+  ITaxRegimePublicFinder,
+} from "@erp/catalogs/api";
 import type { UniqueID } from "@repo/rdx-ddd";
 import { Maybe, Result } from "@repo/rdx-utils";

@ -6,6 +10,7 @@ import type { Proforma } from "../../../../domain";
 import type {
  InvocieTaxRegimeFullReadModel,
  InvoicePaymentMethodReadModel,
+  InvoicePaymentTermReadModel,
 } from "../../../common/models";
 import type { ProformaFullReadModel } from "../../models";

@ -30,6 +35,7 @@ export class ProformaFullReadModelAssembler implements IProformaFullReadModelAss
  public constructor(
    private readonly deps: {
      paymentMethodFinder: IPaymentMethodPublicFinder;
+      paymentTermFinder: IPaymentTermPublicFinder;
      taxRegimeFinder: ITaxRegimePublicFinder;
    }
  ) {}
@ -45,6 +51,12 @@ export class ProformaFullReadModelAssembler implements IProformaFullReadModelAss
      return Result.fail(paymentMethod.error);
    }

+    const paymentTerm = await this.resolvePaymentTerm(params);
+
+    if (paymentTerm.isFailure) {
+      return Result.fail(paymentTerm.error);
+    }
+
    const taxRegime = await this.resolveTaxRegime(params);

    if (taxRegime.isFailure) {
@ -54,6 +66,7 @@ export class ProformaFullReadModelAssembler implements IProformaFullReadModelAss
    return Result.ok({
      proforma: params.proforma,
      paymentMethod: paymentMethod.data,
+      paymentTerm: paymentTerm.data,
      taxRegime: taxRegime.data,
    });
  }
@ -100,6 +113,46 @@ export class ProformaFullReadModelAssembler implements IProformaFullReadModelAss
    );
  }

+  private async resolvePaymentTerm(params: {
+    companyId: UniqueID;
+    proforma: Proforma;
+    transaction?: unknown;
+  }): Promise<Result<Maybe<InvoicePaymentTermReadModel>, Error>> {
+    if (params.proforma.paymentTermId.isNone()) {
+      return Result.ok(Maybe.none());
+    }
+
+    const paymentTermId = params.proforma.paymentTermId.unwrap();
+
+    const result = await this.deps.paymentTermFinder.findByIdInCompany({
+      companyId: params.companyId,
+      id: paymentTermId,
+      transaction: params.transaction,
+    });
+
+    if (result.isFailure) {
+      return Result.fail(result.error);
+    }
+
+    if (result.data.isNone()) {
+      return Result.fail(
+        new Error(`Proforma payment term reference is inconsistent: ${paymentTermId.toString()}`)
+      );
+    }
+
+    const paymentTerm = result.data.unwrap();
+
+    return Result.ok(
+      Maybe.some({
+        id: paymentTerm.id.toString(),
+        name: paymentTerm.name,
+        description: paymentTerm.description.getOrUndefined() ?? "",
+        isActive: paymentTerm.isActive,
+        dueRules: paymentTerm.dueRules,
+      })
+    );
+  }
+
  private async resolveTaxRegime(params: {
    companyId: UniqueID;
    proforma: Proforma;
--- a/modules/customer-invoices/src/api/application/proformas/services/assemblers/proforma-issue-read-model.assembler.test.ts
+++ b/modules/customer-invoices/src/api/application/proformas/services/assemblers/proforma-issue-read-model.assembler.test.ts
@ -0,0 +1,145 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { UniqueID } from "@repo/rdx-ddd";
+import { Maybe, Result } from "@repo/rdx-utils";
+
+import { ProformaIssueReadModelAssembler } from "./proforma-issue-read-model.assembler";
+
+const buildAssembler = (overrides?: {
+  paymentTermResult?: Maybe<{
+    id: UniqueID;
+    companyId: UniqueID;
+    name: string;
+    description: Maybe<string>;
+    isActive: boolean;
+    dueRules: Array<{
+      dueDays: string;
+      percentage: {
+        value: string;
+        scale: number;
+      };
+    }>;
+  }>;
+}) => {
+  const paymentMethodId = UniqueID.generateNewID();
+  const paymentTermId = UniqueID.generateNewID();
+
+  const assembler = new ProformaIssueReadModelAssembler({
+    paymentMethodFinder: {
+      getByIdInCompany: async () =>
+        Result.ok({
+          id: paymentMethodId.toString(),
+          name: "Transferencia",
+          description: null,
+        }),
+    } as never,
+    paymentTermFinder: {
+      findByIdInCompany: async () =>
+        Result.ok(
+          overrides?.paymentTermResult ??
+            Maybe.some({
+              id: paymentTermId,
+              companyId: UniqueID.generateNewID(),
+              name: "30 días",
+              description: Maybe.some("Pago estándar"),
+              isActive: false,
+              dueRules: [
+                {
+                  dueDays: "30",
+                  percentage: {
+                    value: "10000",
+                    scale: 2,
+                  },
+                },
+              ],
+            })
+        ),
+    } as never,
+    taxRegimeFinder: {
+      findByCodeInCompany: async () =>
+        Result.ok(
+          Maybe.some({
+            code: "01",
+            description: "Régimen general",
+          })
+        ),
+    } as never,
+    customerServices: {
+      getCustomerById: async () =>
+        Result.ok({
+          taxRegimeCode: Maybe.some("01"),
+        }),
+    } as never,
+    companyVerifactuProfileRepository: {
+      findByCompanyId: async () => Result.ok(Maybe.none()),
+    } as never,
+  });
+
+  return {
+    assembler,
+    paymentMethodId,
+    paymentTermId,
+  };
+};
+
+const buildProforma = (params?: { paymentTermId?: Maybe<UniqueID> }) => {
+  return {
+    paymentMethodId: Maybe.some(UniqueID.generateNewID()),
+    paymentTermId: params?.paymentTermId ?? Maybe.some(UniqueID.generateNewID()),
+    customerId: UniqueID.generateNewID(),
+    taxRegimeCode: Maybe.some("01"),
+  } as never;
+};
+
+test("assemble permite emitir con payment term inactivo ya referenciado y congela sus reglas", async () => {
+  const { assembler } = buildAssembler();
+
+  const result = await assembler.assemble({
+    companyId: UniqueID.generateNewID(),
+    proforma: buildProforma(),
+    transaction: undefined,
+  });
+
+  assert.equal(result.isSuccess, true);
+  assert.equal(result.data.paymentTerm.isSome(), true);
+  assert.equal(result.data.paymentTerm.unwrap().name, "30 días");
+  assert.equal(result.data.paymentTerm.unwrap().isActive, false);
+  assert.deepEqual(result.data.paymentTerm.unwrap().dueRules, [
+    {
+      dueDays: "30",
+      percentage: {
+        value: "10000",
+        scale: 2,
+      },
+    },
+  ]);
+});
+
+test("assemble mantiene payment term vacío cuando la proforma no tiene referencia", async () => {
+  const { assembler } = buildAssembler();
+
+  const result = await assembler.assemble({
+    companyId: UniqueID.generateNewID(),
+    proforma: buildProforma({ paymentTermId: Maybe.none() }),
+    transaction: undefined,
+  });
+
+  assert.equal(result.isSuccess, true);
+  assert.equal(result.data.paymentTerm.isNone(), true);
+});
+
+test("assemble rechaza una referencia inconsistente de payment term", async () => {
+  const { assembler } = buildAssembler({
+    paymentTermResult: Maybe.none(),
+  });
+
+  const result = await assembler.assemble({
+    companyId: UniqueID.generateNewID(),
+    proforma: buildProforma(),
+    transaction: undefined,
+  });
+
+  assert.equal(result.isFailure, true);
+  assert.match(result.error.message, /inconsistent/i);
+});
--- a/modules/customer-invoices/src/api/application/proformas/services/assemblers/proforma-issue-read-model.assembler.ts
+++ b/modules/customer-invoices/src/api/application/proformas/services/assemblers/proforma-issue-read-model.assembler.ts
@ -1,9 +1,14 @@
-import type { IPaymentMethodPublicFinder, ITaxRegimePublicFinder } from "@erp/catalogs/api";
+import type {
+  IPaymentMethodPublicFinder,
+  IPaymentTermPublicFinder,
+  ITaxRegimePublicFinder,
+} from "@erp/catalogs/api";
 import type { ICustomerPublicServices } from "@erp/customers/api";
 import type { UniqueID } from "@repo/rdx-ddd";
-import { type Maybe, Result } from "@repo/rdx-utils";
+import { Maybe, Result } from "@repo/rdx-utils";

 import type { Proforma } from "../../../../domain";
+import type { InvoicePaymentTermReadModel } from "../../../common/models";
 import type { ICompanyVerifactuProfileRepository } from "../../../company-verifactu-profile";
 import type { ProformaIssueReadModel } from "../../../issued-invoices";
 import { resolveProformaIssueVerifactuSnapshots } from "../../../issued-invoices";
@ -26,6 +31,7 @@ export class ProformaIssueReadModelAssembler implements IProformaIssueReadModelA
  public constructor(
    private readonly deps: {
      paymentMethodFinder: IPaymentMethodPublicFinder;
+      paymentTermFinder: IPaymentTermPublicFinder;
      taxRegimeFinder: ITaxRegimePublicFinder;
      customerServices: ICustomerPublicServices;
      companyVerifactuProfileRepository: ICompanyVerifactuProfileRepository;
@ -53,20 +59,28 @@ export class ProformaIssueReadModelAssembler implements IProformaIssueReadModelA
      return Result.fail(paymentMethodResult.error);
    }

-    const customerResult = await this.deps.customerServices.getCustomerById(params.proforma.customerId, {
-      companyId: params.companyId,
-      transaction: params.transaction,
-    });
+    const paymentTermResult = await this.resolvePaymentTerm(params);
+
+    if (paymentTermResult.isFailure) {
+      return Result.fail(paymentTermResult.error);
+    }
+
+    const customerResult = await this.deps.customerServices.getCustomerById(
+      params.proforma.customerId,
+      {
+        companyId: params.companyId,
+        transaction: params.transaction,
+      }
+    );

    if (customerResult.isFailure) {
      return Result.fail(customerResult.error);
    }

-    const companyProfileResult =
-      await this.deps.companyVerifactuProfileRepository.findByCompanyId(
-        params.companyId,
-        params.transaction
-      );
+    const companyProfileResult = await this.deps.companyVerifactuProfileRepository.findByCompanyId(
+      params.companyId,
+      params.transaction
+    );

    if (companyProfileResult.isFailure) {
      return Result.fail(companyProfileResult.error);
@ -96,6 +110,7 @@ export class ProformaIssueReadModelAssembler implements IProformaIssueReadModelA
        name: paymentMethod.name,
        description: paymentMethod.description,
      },
+      paymentTerm: paymentTermResult.data,
      taxRegime: taxRegimeResult.data,
      fiscalClassification: {
        operationQualificationCode:
@ -111,6 +126,46 @@ export class ProformaIssueReadModelAssembler implements IProformaIssueReadModelA
    });
  }

+  private async resolvePaymentTerm(params: {
+    companyId: UniqueID;
+    proforma: Proforma;
+    transaction?: unknown;
+  }): Promise<Result<Maybe<InvoicePaymentTermReadModel>, Error>> {
+    if (params.proforma.paymentTermId.isNone()) {
+      return Result.ok(Maybe.none());
+    }
+
+    const paymentTermId = params.proforma.paymentTermId.unwrap();
+
+    const result = await this.deps.paymentTermFinder.findByIdInCompany({
+      companyId: params.companyId,
+      id: paymentTermId,
+      transaction: params.transaction,
+    });
+
+    if (result.isFailure) {
+      return Result.fail(result.error);
+    }
+
+    if (result.data.isNone()) {
+      return Result.fail(
+        new Error(`Proforma payment term reference is inconsistent: ${paymentTermId.toString()}`)
+      );
+    }
+
+    const paymentTerm = result.data.unwrap();
+
+    return Result.ok(
+      Maybe.some({
+        id: paymentTerm.id.toString(),
+        name: paymentTerm.name,
+        description: paymentTerm.description.getOrUndefined() ?? "",
+        isActive: paymentTerm.isActive,
+        dueRules: paymentTerm.dueRules,
+      })
+    );
+  }
+
  private async resolveTaxRegime(params: {
    companyId: UniqueID;
    proforma: Proforma;
--- a/modules/customer-invoices/src/api/application/proformas/services/catalog-resolver/proforma-payment-resolver.test.ts
+++ b/modules/customer-invoices/src/api/application/proformas/services/catalog-resolver/proforma-payment-resolver.test.ts
@ -0,0 +1,99 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { UniqueID } from "@repo/rdx-ddd";
+import { Maybe, Result } from "@repo/rdx-utils";
+
+import { ProformaPaymentResolver } from "./proforma-payment-resolver";
+
+test("acepta un payment term activo aunque sea de sistema", async () => {
+  const paymentTermId = UniqueID.generateNewID();
+  const companyId = UniqueID.generateNewID();
+
+  const resolver = new ProformaPaymentResolver({
+    paymentMethodFinder: {} as never,
+    paymentTermFinder: {
+      findByIdInCompany: async () =>
+        Result.ok(
+          Maybe.some({
+            id: paymentTermId,
+            companyId,
+            name: "Contado",
+            description: Maybe.none(),
+            isActive: true,
+            isSystem: true,
+          })
+        ),
+    },
+  });
+
+  const result = await resolver.ensurePaymentTermById({
+    companyId,
+    id: Maybe.some(paymentTermId),
+  });
+
+  assert.equal(result.isSuccess, true);
+});
+
+test("permite limpiar el payment term con null", async () => {
+  const resolver = new ProformaPaymentResolver({
+    paymentMethodFinder: {} as never,
+    paymentTermFinder: {
+      findByIdInCompany: async () => Result.fail(new Error("unused")),
+    },
+  });
+
+  const result = await resolver.ensurePaymentTermById({
+    companyId: UniqueID.generateNewID(),
+    id: Maybe.none(),
+  });
+
+  assert.equal(result.isSuccess, true);
+});
+
+test("rechaza un payment term de otra company o inexistente", async () => {
+  const resolver = new ProformaPaymentResolver({
+    paymentMethodFinder: {} as never,
+    paymentTermFinder: {
+      findByIdInCompany: async () => Result.ok(Maybe.none()),
+    },
+  });
+
+  const result = await resolver.ensurePaymentTermById({
+    companyId: UniqueID.generateNewID(),
+    id: Maybe.some(UniqueID.generateNewID()),
+  });
+
+  assert.equal(result.isFailure, true);
+  assert.match(result.error.message, /not found/i);
+});
+
+test("rechaza nuevas asignaciones a payment terms inactivos", async () => {
+  const paymentTermId = UniqueID.generateNewID();
+  const companyId = UniqueID.generateNewID();
+
+  const resolver = new ProformaPaymentResolver({
+    paymentMethodFinder: {} as never,
+    paymentTermFinder: {
+      findByIdInCompany: async () =>
+        Result.ok(
+          Maybe.some({
+            id: paymentTermId,
+            companyId,
+            name: "30 dias",
+            description: Maybe.none(),
+            isActive: false,
+            isSystem: false,
+          })
+        ),
+    },
+  });
+
+  const result = await resolver.ensurePaymentTermById({
+    companyId,
+    id: Maybe.some(paymentTermId),
+  });
+
+  assert.equal(result.isFailure, true);
+  assert.match(result.error.message, /inactive/i);
+});
--- a/modules/customer-invoices/src/api/application/proformas/services/catalog-resolver/proforma-payment-resolver.ts
+++ b/modules/customer-invoices/src/api/application/proformas/services/catalog-resolver/proforma-payment-resolver.ts
@ -34,6 +34,7 @@ export class ProformaPaymentResolver {
  public async ensurePaymentMethodById(params: {
    companyId: UniqueID;
    id: Maybe<UniqueID>;
+    transaction?: unknown;
  }): Promise<Result<void, Error>> {
    if (params.id.isNone()) {
      return Result.ok(undefined);
@ -44,6 +45,7 @@ export class ProformaPaymentResolver {
    const result = await this.deps.paymentMethodFinder.findByIdInCompany({
      companyId: params.companyId,
      id,
+      transaction: params.transaction,
    });

    if (result.isFailure) {
@ -61,6 +63,7 @@ export class ProformaPaymentResolver {
  public async ensurePaymentTermById(params: {
    companyId: UniqueID;
    id: Maybe<UniqueID>;
+    transaction?: unknown;
  }): Promise<Result<void, Error>> {
    if (params.id.isNone()) {
      return Result.ok(undefined);
@ -71,6 +74,7 @@ export class ProformaPaymentResolver {
    const result = await this.deps.paymentTermFinder.findByIdInCompany({
      companyId: params.companyId,
      id,
+      transaction: params.transaction,
    });

    if (result.isFailure) {
@ -81,6 +85,10 @@ export class ProformaPaymentResolver {
      return Result.fail(new Error(`Payment term not found: ${id.toString()}`));
    }

+    if (!result.data.unwrap().isActive) {
+      return Result.fail(new Error(`Payment term is inactive: ${id.toString()}`));
+    }
+
    return Result.ok(undefined);
  }
 }
--- a/modules/customer-invoices/src/api/application/proformas/services/proforma-creator.test.ts
+++ b/modules/customer-invoices/src/api/application/proformas/services/proforma-creator.test.ts
@ -0,0 +1,267 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { DiscountPercentage } from "@erp/core/api";
+import { CurrencyCode, LanguageCode, UniqueID, UtcDate } from "@repo/rdx-ddd";
+import { Maybe, Result } from "@repo/rdx-utils";
+
+import { ProformaCreator } from "./proforma-creator";
+
+const buildCreateProps = () => {
+  const proformaDateResult = UtcDate.createFromISO("2026-08-16");
+  const languageCodeResult = LanguageCode.create("es");
+  const currencyCodeResult = CurrencyCode.create("EUR");
+  const globalDiscountPercentageResult = DiscountPercentage.create({ value: 0 });
+
+  assert.equal(proformaDateResult.isSuccess, true);
+  assert.equal(languageCodeResult.isSuccess, true);
+  assert.equal(currencyCodeResult.isSuccess, true);
+  assert.equal(globalDiscountPercentageResult.isSuccess, true);
+
+  return {
+    companyId: UniqueID.generateNewID(),
+    status: {} as never,
+    proformaSeriesCode: Maybe.none(),
+    targetInvoiceSeriesCode: Maybe.none(),
+    proformaDate: proformaDateResult.data,
+    operationDate: Maybe.none(),
+    customerId: UniqueID.generateNewID(),
+    recipient: Maybe.none(),
+    reference: Maybe.none(),
+    description: Maybe.none(),
+    notes: Maybe.none(),
+    languageCode: languageCodeResult.data,
+    currencyCode: currencyCodeResult.data,
+    linkedInvoiceId: Maybe.none(),
+    paymentMethodId: Maybe.none(),
+    taxRegimeCode: Maybe.some("01"),
+    taxConfig: {
+      taxMode: "single" as const,
+      defaultIvaCode: Maybe.some("iva_21"),
+      usesEquivalenceSurcharge: false,
+      defaultRecCode: Maybe.none(),
+      usesRetention: false,
+      defaultRetentionCode: Maybe.none(),
+    },
+    globalDiscountPercentage: globalDiscountPercentageResult.data,
+    items: [],
+  };
+};
+
+test("create hereda payment term del customer cuando no llega explicito", async () => {
+  const customerPaymentTermId = UniqueID.generateNewID();
+  const props = buildCreateProps();
+  const proformaId = UniqueID.generateNewID();
+  let capturedPaymentTermId = Maybe.none<UniqueID>();
+  let companyLookups = 0;
+
+  const creator = new ProformaCreator({
+    repository: {
+      create: async (proforma) => {
+        capturedPaymentTermId = proforma.paymentTermId;
+        return Result.ok(undefined);
+      },
+      getByIdInCompany: async () => Result.ok({ paymentTermId: capturedPaymentTermId, id: proformaId } as never),
+    } as never,
+    numberService: {
+      getNextForCompany: async () =>
+        Result.ok({
+          documentSeriesId: UniqueID.generateNewID().toPrimitive(),
+          documentSeriesCode: "PF",
+          number: "1",
+          reference: "1",
+        }),
+    },
+    taxResolver: {
+      ensureTaxRegimeByCode: async () => Result.ok(undefined),
+      ensureItemTaxes: async () => Result.fail(new Error("unused")),
+      findActiveTaxDefinitionByCode: async () => Result.fail(new Error("unused")),
+    } as never,
+    paymentResolver: {
+      ensurePaymentMethodById: async () => Result.ok(undefined),
+      ensurePaymentTermById: async () => Result.ok(undefined),
+    } as never,
+    proformaSeriesValidator: {
+      ensureValidProformaSeries: async () => Result.ok(undefined),
+    } as never,
+    targetInvoiceSeriesValidator: {
+      ensureValidIssuedInvoiceSeries: async () => Result.ok(undefined),
+    } as never,
+    companiesServices: {
+      finder: {
+        findById: async () => {
+          companyLookups += 1;
+          return Result.fail(new Error("should not resolve company default"));
+        },
+      },
+    } as never,
+    customerServices: {
+      getCustomerById: async () =>
+        Result.ok({
+          paymentTermId: Maybe.some(customerPaymentTermId),
+          taxRegimeCode: Maybe.none(),
+          usesEquivalenceSurcharge: false,
+          usesRetention: false,
+        }),
+    } as never,
+  });
+
+  const result = await creator.create({
+    companyId: props.companyId,
+    id: proformaId,
+    props,
+    transaction: undefined,
+  });
+
+  assert.equal(result.isSuccess, true);
+  assert.equal(capturedPaymentTermId.isSome(), true);
+  assert.equal(capturedPaymentTermId.unwrap().equals(customerPaymentTermId), true);
+  assert.equal(companyLookups, 0);
+});
+
+test("create usa fallback a company default cuando customer no tiene payment term", async () => {
+  const companyDefaultPaymentTermId = UniqueID.generateNewID();
+  const props = buildCreateProps();
+  const proformaId = UniqueID.generateNewID();
+  let capturedPaymentTermId = Maybe.none<UniqueID>();
+
+  const creator = new ProformaCreator({
+    repository: {
+      create: async (proforma) => {
+        capturedPaymentTermId = proforma.paymentTermId;
+        return Result.ok(undefined);
+      },
+      getByIdInCompany: async () => Result.ok({ paymentTermId: capturedPaymentTermId, id: proformaId } as never),
+    } as never,
+    numberService: {
+      getNextForCompany: async () =>
+        Result.ok({
+          documentSeriesId: UniqueID.generateNewID().toPrimitive(),
+          documentSeriesCode: "PF",
+          number: "1",
+          reference: "1",
+        }),
+    },
+    taxResolver: {
+      ensureTaxRegimeByCode: async () => Result.ok(undefined),
+      ensureItemTaxes: async () => Result.fail(new Error("unused")),
+      findActiveTaxDefinitionByCode: async () => Result.fail(new Error("unused")),
+    } as never,
+    paymentResolver: {
+      ensurePaymentMethodById: async () => Result.ok(undefined),
+      ensurePaymentTermById: async () => Result.ok(undefined),
+    } as never,
+    proformaSeriesValidator: {
+      ensureValidProformaSeries: async () => Result.ok(undefined),
+    } as never,
+    targetInvoiceSeriesValidator: {
+      ensureValidIssuedInvoiceSeries: async () => Result.ok(undefined),
+    } as never,
+    companiesServices: {
+      finder: {
+        findById: async () =>
+          Result.ok(
+            Maybe.some({
+              id: props.companyId.toPrimitive(),
+              legalName: "Acme",
+              tradeName: null,
+              tin: null,
+              slug: "acme",
+              email: null,
+              phone: null,
+              website: null,
+              defaultPaymentTermId: companyDefaultPaymentTermId.toPrimitive(),
+              status: "active",
+            })
+          ),
+      },
+    } as never,
+    customerServices: {
+      getCustomerById: async () =>
+        Result.ok({
+          paymentTermId: Maybe.none(),
+          taxRegimeCode: Maybe.none(),
+          usesEquivalenceSurcharge: false,
+          usesRetention: false,
+        }),
+    } as never,
+  });
+
+  const result = await creator.create({
+    companyId: props.companyId,
+    id: proformaId,
+    props,
+    transaction: undefined,
+  });
+
+  assert.equal(result.isSuccess, true);
+  assert.equal(capturedPaymentTermId.isSome(), true);
+  assert.equal(capturedPaymentTermId.unwrap().equals(companyDefaultPaymentTermId), true);
+});
+
+test("create con payment_term_id null explicito conserva el clear", async () => {
+  const props = {
+    ...buildCreateProps(),
+    paymentTermId: Maybe.none<UniqueID>(),
+  };
+  const proformaId = UniqueID.generateNewID();
+  let capturedPaymentTermId = Maybe.some(UniqueID.generateNewID());
+
+  const creator = new ProformaCreator({
+    repository: {
+      create: async (proforma) => {
+        capturedPaymentTermId = proforma.paymentTermId;
+        return Result.ok(undefined);
+      },
+      getByIdInCompany: async () => Result.ok({ paymentTermId: capturedPaymentTermId, id: proformaId } as never),
+    } as never,
+    numberService: {
+      getNextForCompany: async () =>
+        Result.ok({
+          documentSeriesId: UniqueID.generateNewID().toPrimitive(),
+          documentSeriesCode: "PF",
+          number: "1",
+          reference: "1",
+        }),
+    },
+    taxResolver: {
+      ensureTaxRegimeByCode: async () => Result.ok(undefined),
+      ensureItemTaxes: async () => Result.fail(new Error("unused")),
+      findActiveTaxDefinitionByCode: async () => Result.fail(new Error("unused")),
+    } as never,
+    paymentResolver: {
+      ensurePaymentMethodById: async () => Result.ok(undefined),
+      ensurePaymentTermById: async () => Result.ok(undefined),
+    } as never,
+    proformaSeriesValidator: {
+      ensureValidProformaSeries: async () => Result.ok(undefined),
+    } as never,
+    targetInvoiceSeriesValidator: {
+      ensureValidIssuedInvoiceSeries: async () => Result.ok(undefined),
+    } as never,
+    companiesServices: {
+      finder: {
+        findById: async () => Result.fail(new Error("should not resolve company default")),
+      },
+    } as never,
+    customerServices: {
+      getCustomerById: async () =>
+        Result.ok({
+          paymentTermId: Maybe.some(UniqueID.generateNewID()),
+          taxRegimeCode: Maybe.none(),
+          usesEquivalenceSurcharge: false,
+          usesRetention: false,
+        }),
+    } as never,
+  });
+
+  const result = await creator.create({
+    companyId: props.companyId,
+    id: proformaId,
+    props,
+    transaction: undefined,
+  });
+
+  assert.equal(result.isSuccess, true);
+  assert.equal(capturedPaymentTermId.isNone(), true);
+});
--- a/modules/customer-invoices/src/api/application/proformas/services/proforma-creator.ts
+++ b/modules/customer-invoices/src/api/application/proformas/services/proforma-creator.ts
@ -1,5 +1,6 @@
+import type { ICompanyPublicServices } from "@erp/companies/api";
 import type { ICustomerPublicServices } from "@erp/customers/api";
-import type { UniqueID } from "@repo/rdx-ddd";
+import { UniqueID, type UniqueID as UniqueIDType } from "@repo/rdx-ddd";
 import { Maybe, Result } from "@repo/rdx-utils";

 import {
@ -39,6 +40,7 @@ export class ProformaCreator implements IProformaCreator {
      paymentResolver: ProformaPaymentResolver;
      proformaSeriesValidator: ProformaSeriesValidator;
      targetInvoiceSeriesValidator: ProformaTargetInvoiceSeriesValidator;
+      companiesServices: ICompanyPublicServices;
      customerServices: ICustomerPublicServices;
    }
  ) {}
@ -168,8 +170,20 @@ export class ProformaCreator implements IProformaCreator {

    const customer = customerResult.data;

+    const paymentTermIdResult = await this.resolveEffectivePaymentTermId({
+      companyId: props.companyId,
+      explicitPaymentTermId: props.paymentTermId,
+      customerPaymentTermId: customer.paymentTermId,
+      transaction,
+    });
+
+    if (paymentTermIdResult.isFailure) {
+      return Result.fail(paymentTermIdResult.error);
+    }
+
    const _newProps = {
      ...props,
+      paymentTermId: paymentTermIdResult.data,
      taxRegimeCode: props.taxRegimeCode.isNone()
        ? customer.taxRegimeCode.isSome()
          ? customer.taxRegimeCode
@ -191,6 +205,7 @@ export class ProformaCreator implements IProformaCreator {
    const paymentMethodResult = await this.deps.paymentResolver.ensurePaymentMethodById({
      companyId: _newProps.companyId,
      id: _newProps.paymentMethodId,
+      transaction,
    });

    if (paymentMethodResult.isFailure) {
@ -237,6 +252,90 @@ export class ProformaCreator implements IProformaCreator {
    });
  }

+  private async resolveEffectivePaymentTermId(params: {
+    companyId: UniqueID;
+    explicitPaymentTermId: Maybe<UniqueIDType> | undefined;
+    customerPaymentTermId: Maybe<UniqueIDType>;
+    transaction?: unknown;
+  }): Promise<Result<Maybe<UniqueIDType>, Error>> {
+    if (params.explicitPaymentTermId !== undefined) {
+      const ensureResult = await this.deps.paymentResolver.ensurePaymentTermById({
+        companyId: params.companyId,
+        id: params.explicitPaymentTermId,
+        transaction: params.transaction,
+      });
+
+      if (ensureResult.isFailure) {
+        return Result.fail(ensureResult.error);
+      }
+
+      return Result.ok(params.explicitPaymentTermId);
+    }
+
+    if (params.customerPaymentTermId.isSome()) {
+      const ensureResult = await this.deps.paymentResolver.ensurePaymentTermById({
+        companyId: params.companyId,
+        id: params.customerPaymentTermId,
+        transaction: params.transaction,
+      });
+
+      if (ensureResult.isFailure) {
+        return Result.fail(
+          new Error("Customer payment term is inconsistent.", {
+            cause: ensureResult.error,
+          })
+        );
+      }
+
+      return Result.ok(params.customerPaymentTermId);
+    }
+
+    const companyResult = await this.deps.companiesServices.finder.findById({
+      companyId: params.companyId,
+      transaction: params.transaction,
+    });
+
+    if (companyResult.isFailure) {
+      return Result.fail(companyResult.error);
+    }
+
+    if (companyResult.data.isNone()) {
+      return Result.fail(new Error("Company not found while resolving proforma payment term."));
+    }
+
+    const company = companyResult.data.unwrap();
+
+    if (company.defaultPaymentTermId == null) {
+      return Result.ok(Maybe.none());
+    }
+
+    const companyDefaultPaymentTermIdResult = UniqueID.create(company.defaultPaymentTermId);
+    if (companyDefaultPaymentTermIdResult.isFailure) {
+      return Result.fail(
+        new Error("Company default payment term is invalid.", {
+          cause: companyDefaultPaymentTermIdResult.error,
+        })
+      );
+    }
+
+    const resolvedDefaultPaymentTermId = Maybe.some(companyDefaultPaymentTermIdResult.data);
+    const ensureResult = await this.deps.paymentResolver.ensurePaymentTermById({
+      companyId: params.companyId,
+      id: resolvedDefaultPaymentTermId,
+      transaction: params.transaction,
+    });
+
+    if (ensureResult.isFailure) {
+      return Result.fail(
+        new Error("Company default payment term is inconsistent.", {
+          cause: ensureResult.error,
+        })
+      );
+    }
+
+    return Result.ok(resolvedDefaultPaymentTermId);
+  }
+
  private async resolveTaxConfig(params: {
    companyId: UniqueID;
    atDate: IProformaCreateProps["proformaDate"];
--- a/Show More
+++ b/Show More
				`@ -0,0 +1 @@`
				`export * from "./use-company-details-settings-controller";`
				`@ -0,0 +1 @@`
				`export * from "./company-settings-form.schema";`
				`@ -0,0 +1 @@`
				`export * from "./ui/pages/company-details-settings-page";`