diff --git a/modules/customer-invoices/src/api/infrastructure/invoice-series/express/invoice-series.routes.ts b/modules/customer-invoices/src/api/infrastructure/invoice-series/express/invoice-series.routes.ts
index 0e227b0b..8950905d 100644
--- a/modules/customer-invoices/src/api/infrastructure/invoice-series/express/invoice-series.routes.ts
+++ b/modules/customer-invoices/src/api/infrastructure/invoice-series/express/invoice-series.routes.ts
@@ -1,8 +1,9 @@
-import { type StartParams } from "@erp/core/api";
+import type { StartParams } from "@erp/core/api";
 import { requireIdentityTenant } from "@erp/identity/api";
 import { type NextFunction, type Request, type Response, Router } from "express";
 
 import type { InvoiceSeriesInternalDeps } from "../di/invoice-series.di";
+
 import { ListInvoiceSeriesController } from "./controllers";
 
 export const invoiceSeriesRouter = (params: StartParams) => {
@@ -20,5 +21,5 @@ export const invoiceSeriesRouter = (params: StartParams) => {
     return controller.execute(req, res, next);
   });
 
-  app.use(`${config.server.apiBasePath}/invoice-series`, router);
+  app.use(`${config.server.apiBasePath}/catalogs/invoice-series`, router);
 };
diff --git a/modules/customer-invoices/src/api/infrastructure/invoice-series/persistence/sequelize/repositories/invoice-series.repository.ts b/modules/customer-invoices/src/api/infrastructure/invoice-series/persistence/sequelize/repositories/invoice-series.repository.ts
index fbb4bc45..f2793f3a 100644
--- a/modules/customer-invoices/src/api/infrastructure/invoice-series/persistence/sequelize/repositories/invoice-series.repository.ts
+++ b/modules/customer-invoices/src/api/infrastructure/invoice-series/persistence/sequelize/repositories/invoice-series.repository.ts
@@ -1,7 +1,4 @@
-import {
-  SequelizeRepository,
-  translateSequelizeError,
-} from "@erp/core/api";
+import { SequelizeRepository, translateSequelizeError } from "@erp/core/api";
 import type { UniqueID } from "@repo/rdx-ddd";
 import { Collection, Result } from "@repo/rdx-utils";
 import type { Sequelize, Transaction } from "sequelize";
@@ -11,7 +8,7 @@ import {
   InvoiceSeriesConcurrencyError,
   InvoiceSeriesLockRequiredError,
   InvoiceSeriesTransactionRequiredError,
-} from "../../../../../application/invoice-series";
+} from "../../../../../application";
 import type { InvoiceSeries, InvoiceSeriesCode } from "../../../../../domain";
 import { CustomerInvoiceSeriesModel } from "../../../../common";
 import type { InvoiceSeriesDomainMapper } from "../mappers";
@@ -27,10 +24,7 @@ export class SequelizeInvoiceSeriesRepository
     super({ database });
   }
 
-  public async findActiveByCompany(params: {
-    companyId: UniqueID;
-    transaction?: unknown;
-  }) {
+  public async findActiveByCompany(params: { companyId: UniqueID; transaction?: unknown }) {
     try {
       const rows = await CustomerInvoiceSeriesModel.findAll({
         where: {
diff --git a/modules/customer-invoices/src/web/proformas/create/controllers/use-create-proforma-controller.ts b/modules/customer-invoices/src/web/proformas/create/controllers/use-create-proforma-controller.ts
index 84c3802c..982f6e9a 100644
--- a/modules/customer-invoices/src/web/proformas/create/controllers/use-create-proforma-controller.ts
+++ b/modules/customer-invoices/src/web/proformas/create/controllers/use-create-proforma-controller.ts
@@ -16,10 +16,14 @@ import { useEffect, useId, useMemo, useState } from "react";
 import type { FieldErrors } from "react-hook-form";
 
 import type { Proforma } from "../../shared";
-import { useProformaCreateMutation, useProformasListQuery } from "../../shared/hooks";
+import {
+  buildInvoiceSeriesSelectItems,
+  useInvoiceSeriesQuery,
+  useProformaCreateMutation,
+} from "../../shared";
 import { buildCreateProformaParams } from "../adapters";
 import { type ProformaCreateForm, ProformaCreateFormSchema } from "../entities";
-import { buildProformaCreateDefault, buildProformaSeriesOptions } from "../utils";
+import { buildProformaCreateDefault } from "../utils";
 
 export interface UseCreateProformaControllerOptions {
   onCreated?(proforma: Proforma): void;
@@ -48,12 +52,7 @@ export const useCreateProformaController = (options?: UseCreateProformaControlle
     error: createError,
   } = useProformaCreateMutation();
 
-  const seriesQuery = useProformasListQuery({
-    criteria: {
-      pageNumber: 1,
-      pageSize: 100,
-    },
-  });
+  const seriesQuery = useInvoiceSeriesQuery();
 
   const initialValues = useMemo<ProformaCreateForm>(() => buildProformaCreateDefault(), []);
 
@@ -64,20 +63,28 @@ export const useCreateProformaController = (options?: UseCreateProformaControlle
   });
 
   const seriesOptions = useMemo(
-    () => buildProformaSeriesOptions(seriesQuery.data),
+    () => buildInvoiceSeriesSelectItems(seriesQuery.data ?? []),
     [seriesQuery.data]
   );
 
-  useEffect(() => {
-    if (seriesOptions.length !== 1) return;
-    if (form.getValues("series")) return;
+  const defaultSeries = useMemo(() => {
+    const invoiceSeries = seriesQuery.data ?? [];
 
-    form.setValue("series", seriesOptions[0].value, {
+    return (
+      invoiceSeries.find((series) => series.isDefault)?.code ?? invoiceSeries[0]?.code ?? ""
+    );
+  }, [seriesQuery.data]);
+
+  useEffect(() => {
+    if (form.getValues("series")) return;
+    if (!defaultSeries) return;
+
+    form.setValue("series", defaultSeries, {
       shouldDirty: false,
       shouldTouch: false,
       shouldValidate: true,
     });
-  }, [form, seriesOptions]);
+  }, [defaultSeries, form]);
 
   const setCustomer = (customer: CustomerSelectionOption) => {
     setSelectedCustomer(customer);
@@ -163,8 +170,8 @@ export const useCreateProformaController = (options?: UseCreateProformaControlle
     setCustomer,
     clearCustomer,
     seriesOptions,
-    isLoading: seriesQuery.isLoading,
-    isLoadError: seriesQuery.isError,
-    loadError: seriesQuery.error,
+    isSeriesLoading: seriesQuery.isLoading,
+    isSeriesLoadError: seriesQuery.isError,
+    seriesLoadError: seriesQuery.error,
   };
 };
diff --git a/modules/customer-invoices/src/web/proformas/create/ui/blocks/proforma-create-form.tsx b/modules/customer-invoices/src/web/proformas/create/ui/blocks/proforma-create-form.tsx
index 83c54bdf..12b71eb1 100644
--- a/modules/customer-invoices/src/web/proformas/create/ui/blocks/proforma-create-form.tsx
+++ b/modules/customer-invoices/src/web/proformas/create/ui/blocks/proforma-create-form.tsx
@@ -9,6 +9,7 @@ import { ProformaCreateInitialInfoCard } from "./proforma-create-initial-info-ca
 interface ProformaCreateFormProps {
   formId: string;
   isSubmitting: boolean;
+  isSeriesLoading?: boolean;
   onSubmit: React.SubmitEventHandler<HTMLFormElement>;
   selectedCustomer?: CustomerSelectionOption | null;
   onSelectCustomer: () => void;
@@ -20,6 +21,7 @@ interface ProformaCreateFormProps {
 export const ProformaCreateForm = ({
   formId,
   isSubmitting,
+  isSeriesLoading = false,
   onSubmit,
   selectedCustomer,
   onSelectCustomer,
@@ -33,6 +35,7 @@ export const ProformaCreateForm = ({
         <div className="space-y-6">
           <ProformaCreateInitialInfoCard
             disabled={isSubmitting}
+            isSeriesLoading={isSeriesLoading}
             onClearCustomer={onClearCustomer}
             onSelectCustomer={onSelectCustomer}
             selectedCustomer={selectedCustomer}
diff --git a/modules/customer-invoices/src/web/proformas/create/ui/blocks/proforma-create-initial-info-card.tsx b/modules/customer-invoices/src/web/proformas/create/ui/blocks/proforma-create-initial-info-card.tsx
index 0cf3b726..659b7a66 100644
--- a/modules/customer-invoices/src/web/proformas/create/ui/blocks/proforma-create-initial-info-card.tsx
+++ b/modules/customer-invoices/src/web/proformas/create/ui/blocks/proforma-create-initial-info-card.tsx
@@ -1,4 +1,10 @@
-import { DatePickerField, FormSectionCard, FormSectionGrid, SelectField } from "@repo/rdx-ui/components";
+import {
+  DatePickerField,
+  FormSectionCard,
+  FormSectionGrid,
+  SelectField,
+  type SelectFieldItem,
+} from "@repo/rdx-ui/components";
 import { FileTextIcon } from "lucide-react";
 
 import type { CustomerSelectionOption } from "@erp/customers";
@@ -8,14 +14,16 @@ import { ProformaCreateCustomerField } from "./proforma-create-customer-field";
 
 interface ProformaCreateInitialInfoCardProps {
   disabled?: boolean;
+  isSeriesLoading?: boolean;
   selectedCustomer?: CustomerSelectionOption | null;
   onSelectCustomer: () => void;
   onClearCustomer: () => void;
-  seriesOptions: { value: string; label: string }[];
+  seriesOptions: SelectFieldItem[];
 }
 
 export const ProformaCreateInitialInfoCard = ({
   disabled = false,
+  isSeriesLoading = false,
   selectedCustomer,
   onSelectCustomer,
   onClearCustomer,
@@ -44,11 +52,17 @@ export const ProformaCreateInitialInfoCard = ({
 
         <SelectField<ProformaCreateForm>
           className="md:col-span-4"
-          disabled={disabled}
+          disabled={disabled || isSeriesLoading}
           items={seriesOptions}
           label="Serie"
           name="series"
-          placeholder={seriesOptions.length > 0 ? "Selecciona una serie" : "Sin serie"}
+          placeholder={
+            isSeriesLoading
+              ? "Cargando series..."
+              : seriesOptions.length > 0
+                ? "Selecciona una serie"
+                : "Sin serie"
+          }
         />
       </FormSectionGrid>
     </FormSectionCard>
diff --git a/modules/customer-invoices/src/web/proformas/create/ui/pages/proforma-create-page.tsx b/modules/customer-invoices/src/web/proformas/create/ui/pages/proforma-create-page.tsx
index c7028e7a..23d50adb 100644
--- a/modules/customer-invoices/src/web/proformas/create/ui/pages/proforma-create-page.tsx
+++ b/modules/customer-invoices/src/web/proformas/create/ui/pages/proforma-create-page.tsx
@@ -1,13 +1,11 @@
 import { ErrorAlert } from "@erp/core/components";
 import { UnsavedChangesProvider, useReturnToNavigation } from "@erp/core/hooks";
 import { SelectCustomerDialog } from "@erp/customers";
-import { AppContent, BackHistoryButton } from "@repo/rdx-ui/components";
 import { FormProvider } from "react-hook-form";
 
 import { ProformaInfoAlert } from "../../../update/ui/components";
 import { useCreateProformaPageController } from "../../controllers";
 import { ProformaCreateForm, ProformaCreateHeader } from "../blocks";
-import { ProformaCreateSkeleton } from "../components";
 
 export const ProformaCreatePage = () => {
   const { createCtrl, selectCustomerCtrl, returnTo } = useCreateProformaPageController();
@@ -16,29 +14,6 @@ export const ProformaCreatePage = () => {
     fallbackPath: returnTo,
   });
 
-  if (createCtrl.isLoading) {
-    return <ProformaCreateSkeleton />;
-  }
-
-  if (createCtrl.isLoadError) {
-    return (
-      <AppContent>
-        <ErrorAlert
-          message={
-            createCtrl.loadError instanceof Error
-              ? createCtrl.loadError.message
-              : "Inténtalo de nuevo más tarde."
-          }
-          title="No se pudo preparar la creación de la proforma"
-        />
-
-        <div className="flex items-center justify-end">
-          <BackHistoryButton onClick={() => navigateBack()} />
-        </div>
-      </AppContent>
-    );
-  }
-
   return (
     <div className="fixed inset-0 flex flex-col overflow-hidden">
       <FormProvider {...createCtrl.form}>
@@ -65,9 +40,21 @@ export const ProformaCreatePage = () => {
             />
           )}
 
+          {createCtrl.isSeriesLoadError && (
+            <ErrorAlert
+              message={
+                createCtrl.seriesLoadError instanceof Error
+                  ? createCtrl.seriesLoadError.message
+                  : "Inténtalo de nuevo más tarde."
+              }
+              title="No se pudieron cargar las series de facturación"
+            />
+          )}
+
           <div className="flex-1 overflow-y-auto">
             <ProformaCreateForm
               formId={createCtrl.formId}
+              isSeriesLoading={createCtrl.isSeriesLoading}
               isSubmitting={createCtrl.isCreating}
               onClearCustomer={createCtrl.clearCustomer}
               onSelectCustomer={selectCustomerCtrl.selectCtrl.openDialog}
diff --git a/modules/customer-invoices/src/web/proformas/create/utils/build-proforma-create-default.ts b/modules/customer-invoices/src/web/proformas/create/utils/build-proforma-create-default.ts
index d305afec..980fd914 100644
--- a/modules/customer-invoices/src/web/proformas/create/utils/build-proforma-create-default.ts
+++ b/modules/customer-invoices/src/web/proformas/create/utils/build-proforma-create-default.ts
@@ -6,7 +6,7 @@ export const buildProformaCreateDefault = (): ProformaCreateForm => {
   return {
     customerId: "",
     invoiceDate: DateHelper.buildTodayIsoDate(),
-    series: "F26",
+    series: "",
     languageCode: "es",
     currencyCode: "EUR",
   };
diff --git a/modules/customer-invoices/src/web/proformas/create/utils/build-proforma-series-options.ts b/modules/customer-invoices/src/web/proformas/create/utils/build-proforma-series-options.ts
deleted file mode 100644
index c203995c..00000000
--- a/modules/customer-invoices/src/web/proformas/create/utils/build-proforma-series-options.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import type { SelectFieldItem } from "@repo/rdx-ui/components";
-
-import type { ProformaList } from "../../shared";
-
-export const buildProformaSeriesOptions = (proformas?: ProformaList): SelectFieldItem[] => {
-  const uniqueSeries = new Set<string>();
-
-  for (const item of proformas?.items ?? []) {
-    const value = item.series?.trim();
-    if (!value) continue;
-    uniqueSeries.add(value);
-  }
-
-  return [...uniqueSeries]
-    .sort((left, right) => left.localeCompare(right))
-    .map((value) => ({ value, label: value }));
-};
diff --git a/modules/customer-invoices/src/web/proformas/create/utils/index.ts b/modules/customer-invoices/src/web/proformas/create/utils/index.ts
index 3c2c7a03..6020b31d 100644
--- a/modules/customer-invoices/src/web/proformas/create/utils/index.ts
+++ b/modules/customer-invoices/src/web/proformas/create/utils/index.ts
@@ -1,2 +1 @@
 export * from "./build-proforma-create-default";
-export * from "./build-proforma-series-options";
diff --git a/modules/customer-invoices/src/web/proformas/shared/adapters/index.ts b/modules/customer-invoices/src/web/proformas/shared/adapters/index.ts
index 58ff273b..5783a072 100644
--- a/modules/customer-invoices/src/web/proformas/shared/adapters/index.ts
+++ b/modules/customer-invoices/src/web/proformas/shared/adapters/index.ts
@@ -1,3 +1,4 @@
 export * from "./get-proforma-by-id.adapter";
+export * from "./list-invoice-series.adapter";
 export * from "./list-proformas.adapter";
 export * from "./proforma-to-list-row-patch.adapter";
diff --git a/modules/customer-invoices/src/web/proformas/shared/adapters/list-invoice-series.adapter.ts b/modules/customer-invoices/src/web/proformas/shared/adapters/list-invoice-series.adapter.ts
new file mode 100644
index 00000000..5e80e32e
--- /dev/null
+++ b/modules/customer-invoices/src/web/proformas/shared/adapters/list-invoice-series.adapter.ts
@@ -0,0 +1,18 @@
+import type { ListInvoiceSeriesResponseDTO } from "../../../../common";
+import type { InvoiceSeriesSummary } from "../entities";
+
+export const mapInvoiceSeriesSummaryDTOToInvoiceSeriesSummary = (
+  dto: ListInvoiceSeriesResponseDTO["items"][number]
+): InvoiceSeriesSummary => ({
+  id: dto.id,
+  code: dto.code,
+  nextNumber: dto.next_number,
+  paddingLength: dto.padding_length,
+  isDefault: dto.is_default,
+});
+
+export const ListInvoiceSeriesAdapter = {
+  fromDto(dto: ListInvoiceSeriesResponseDTO): InvoiceSeriesSummary[] {
+    return dto.items.map(mapInvoiceSeriesSummaryDTOToInvoiceSeriesSummary);
+  },
+};
diff --git a/modules/customer-invoices/src/web/proformas/shared/api/index.ts b/modules/customer-invoices/src/web/proformas/shared/api/index.ts
index b00e6b8f..1168573c 100644
--- a/modules/customer-invoices/src/web/proformas/shared/api/index.ts
+++ b/modules/customer-invoices/src/web/proformas/shared/api/index.ts
@@ -3,5 +3,6 @@ export * from "./create-proforma.api";
 export * from "./delete-proforma-by-id.api";
 export * from "./get-proforma-by-id.api";
 export * from "./issue-proforma-by-id.api";
+export * from "./list-invoice-series.api";
 export * from "./list-proformas-by-criteria.api";
 export * from "./update-proforma-by-id.api";
diff --git a/modules/customer-invoices/src/web/proformas/shared/api/list-invoice-series.api.ts b/modules/customer-invoices/src/web/proformas/shared/api/list-invoice-series.api.ts
new file mode 100644
index 00000000..6f194824
--- /dev/null
+++ b/modules/customer-invoices/src/web/proformas/shared/api/list-invoice-series.api.ts
@@ -0,0 +1,12 @@
+import type { IDataSource } from "@erp/core/client";
+
+import type { ListInvoiceSeriesResponseDTO } from "../../../../common";
+
+export const listInvoiceSeries = (
+  dataSource: IDataSource,
+  signal?: AbortSignal
+): Promise<ListInvoiceSeriesResponseDTO> => {
+  return dataSource.getList<ListInvoiceSeriesResponseDTO>("catalogs/invoice-series", {
+    signal,
+  });
+};
diff --git a/modules/customer-invoices/src/web/proformas/shared/entities/index.ts b/modules/customer-invoices/src/web/proformas/shared/entities/index.ts
index ca6e9619..e1e25f31 100644
--- a/modules/customer-invoices/src/web/proformas/shared/entities/index.ts
+++ b/modules/customer-invoices/src/web/proformas/shared/entities/index.ts
@@ -1,4 +1,5 @@
 export * from "./forms/proforma-item-form.entity";
+export * from "./invoice-series-summary.entity";
 export * from "./proforma.entity";
 export * from "./proforma-item.entity";
 export * from "./proforma-list.entity";
diff --git a/modules/customer-invoices/src/web/proformas/shared/entities/invoice-series-summary.entity.ts b/modules/customer-invoices/src/web/proformas/shared/entities/invoice-series-summary.entity.ts
new file mode 100644
index 00000000..30362bba
--- /dev/null
+++ b/modules/customer-invoices/src/web/proformas/shared/entities/invoice-series-summary.entity.ts
@@ -0,0 +1,7 @@
+export interface InvoiceSeriesSummary {
+  id: string;
+  code: string;
+  nextNumber: number;
+  paddingLength: number;
+  isDefault: boolean;
+}
diff --git a/modules/customer-invoices/src/web/proformas/shared/hooks/index.ts b/modules/customer-invoices/src/web/proformas/shared/hooks/index.ts
index 92bd72af..08d283a2 100644
--- a/modules/customer-invoices/src/web/proformas/shared/hooks/index.ts
+++ b/modules/customer-invoices/src/web/proformas/shared/hooks/index.ts
@@ -1,4 +1,5 @@
 export * from "./keys";
+export * from "./use-invoice-series-query";
 export * from "./use-proforma-change-status-mutation";
 export * from "./use-proforma-create-mutation";
 export * from "./use-proforma-delete-mutation";
diff --git a/modules/customer-invoices/src/web/proformas/shared/hooks/keys.ts b/modules/customer-invoices/src/web/proformas/shared/hooks/keys.ts
index 5a1bc9ad..2c19cd4e 100644
--- a/modules/customer-invoices/src/web/proformas/shared/hooks/keys.ts
+++ b/modules/customer-invoices/src/web/proformas/shared/hooks/keys.ts
@@ -6,6 +6,7 @@ import type { ProformasListRequestDTO } from "../../../../common";
  * Prefijo base para listados
  */
 export const LIST_PROFORMAS_QUERY_KEY_PREFIX = ["proformas"] as const;
+export const INVOICE_SERIES_QUERY_KEY = ["customer-invoices", "invoice-series"] as const;
 
 /**
  * Query key para listado de proformas
diff --git a/modules/customer-invoices/src/web/proformas/shared/hooks/use-invoice-series-query.ts b/modules/customer-invoices/src/web/proformas/shared/hooks/use-invoice-series-query.ts
new file mode 100644
index 00000000..db4a12e8
--- /dev/null
+++ b/modules/customer-invoices/src/web/proformas/shared/hooks/use-invoice-series-query.ts
@@ -0,0 +1,20 @@
+import { useDataSource } from "@erp/core/hooks";
+import { type DefaultError, type UseQueryResult, useQuery } from "@tanstack/react-query";
+
+import { ListInvoiceSeriesAdapter } from "../adapters";
+import { listInvoiceSeries } from "../api";
+import type { InvoiceSeriesSummary } from "../entities";
+
+import { INVOICE_SERIES_QUERY_KEY } from "./keys";
+
+export const useInvoiceSeriesQuery = (): UseQueryResult<InvoiceSeriesSummary[], DefaultError> => {
+  const dataSource = useDataSource();
+
+  return useQuery<InvoiceSeriesSummary[], DefaultError>({
+    queryKey: INVOICE_SERIES_QUERY_KEY,
+    queryFn: async ({ signal }) => {
+      const dto = await listInvoiceSeries(dataSource, signal);
+      return ListInvoiceSeriesAdapter.fromDto(dto);
+    },
+  });
+};
diff --git a/modules/customer-invoices/src/web/proformas/shared/utils/build-invoice-series-select-items.ts b/modules/customer-invoices/src/web/proformas/shared/utils/build-invoice-series-select-items.ts
new file mode 100644
index 00000000..6876a83f
--- /dev/null
+++ b/modules/customer-invoices/src/web/proformas/shared/utils/build-invoice-series-select-items.ts
@@ -0,0 +1,12 @@
+import type { SelectFieldItem } from "@repo/rdx-ui/components";
+
+import type { InvoiceSeriesSummary } from "../entities";
+
+export const buildInvoiceSeriesSelectItems = (
+  invoiceSeries: InvoiceSeriesSummary[]
+): SelectFieldItem[] => {
+  return invoiceSeries.map((series) => ({
+    value: series.code,
+    label: series.code,
+  }));
+};
diff --git a/modules/customer-invoices/src/web/proformas/shared/utils/ensure-current-value-in-select-items.ts b/modules/customer-invoices/src/web/proformas/shared/utils/ensure-current-value-in-select-items.ts
new file mode 100644
index 00000000..951bbf77
--- /dev/null
+++ b/modules/customer-invoices/src/web/proformas/shared/utils/ensure-current-value-in-select-items.ts
@@ -0,0 +1,19 @@
+import type { SelectFieldItem } from "@repo/rdx-ui/components";
+
+export const ensureCurrentValueInSelectItems = (
+  items: SelectFieldItem[],
+  currentValue?: string | null
+): SelectFieldItem[] => {
+  if (!currentValue) return items;
+
+  const exists = items.some((item) => item.value === currentValue);
+  if (exists) return items;
+
+  return [
+    {
+      value: currentValue,
+      label: currentValue,
+    },
+    ...items,
+  ];
+};
diff --git a/modules/customer-invoices/src/web/proformas/shared/utils/index.ts b/modules/customer-invoices/src/web/proformas/shared/utils/index.ts
index c63eeb8d..3fbccf65 100644
--- a/modules/customer-invoices/src/web/proformas/shared/utils/index.ts
+++ b/modules/customer-invoices/src/web/proformas/shared/utils/index.ts
@@ -1,2 +1,4 @@
+export * from "./build-invoice-series-select-items";
 export * from "./calculate-proforma-due-dates";
+export * from "./ensure-current-value-in-select-items";
 export * from "./proforma-fiscal-options.utils";
diff --git a/modules/customer-invoices/src/web/proformas/update/controllers/use-update-proforma-controller.ts b/modules/customer-invoices/src/web/proformas/update/controllers/use-update-proforma-controller.ts
index 8a5ff263..a73b2c54 100644
--- a/modules/customer-invoices/src/web/proformas/update/controllers/use-update-proforma-controller.ts
+++ b/modules/customer-invoices/src/web/proformas/update/controllers/use-update-proforma-controller.ts
@@ -15,7 +15,13 @@ import type { FieldErrors } from "react-hook-form";
 import { useTranslation } from "../../../i18n";
 import type { UpdateProformaByIdParams } from "../../shared";
 import type { Proforma } from "../../shared/entities";
-import { useProformaGetQuery, useProformaUpdateMutation } from "../../shared/hooks";
+import {
+  buildInvoiceSeriesSelectItems,
+  ensureCurrentValueInSelectItems,
+  useInvoiceSeriesQuery,
+  useProformaGetQuery,
+  useProformaUpdateMutation,
+} from "../../shared";
 import { mapProformaToProformaUpdateForm, mapProformaToSelectedCustomer } from "../adapters";
 import { type ProformaUpdateForm, ProformaUpdateFormSchema } from "../entities";
 import {
@@ -72,6 +78,8 @@ export const useUpdateProformaController = (
     error: updateError,
   } = useProformaUpdateMutation();
 
+  const invoiceSeriesQuery = useInvoiceSeriesQuery();
+
   const initialValues = useMemo<ProformaUpdateForm>(() => {
     if (!proformaData) return buildProformaUpdateDefault();
 
@@ -221,7 +229,7 @@ export const useUpdateProformaController = (
         options?.onError?.(normalizedError, params);
       }
     },
-    (errors: FieldErrors<ProformaUpdateForm>) => {
+    (_errors: FieldErrors<ProformaUpdateForm>) => {
       focusFirstInputFormError(form);
 
       showWarningToast(
@@ -239,6 +247,12 @@ export const useUpdateProformaController = (
 
   const currencyCode = form.watch("currencyCode");
   const languageCode = form.watch("languageCode");
+  const currentSeries = form.watch("series");
+
+  const seriesOptions = useMemo(() => {
+    const activeSeriesItems = buildInvoiceSeriesSelectItems(invoiceSeriesQuery.data ?? []);
+    return ensureCurrentValueInSelectItems(activeSeriesItems, currentSeries);
+  }, [currentSeries, invoiceSeriesQuery.data]);
 
   const taxCtrl = useUpdateProformaTaxController({
     form,
@@ -263,6 +277,10 @@ export const useUpdateProformaController = (
     taxCtrl,
     totalsCtrl,
     paymentCtrl,
+    seriesOptions,
+    isSeriesLoading: invoiceSeriesQuery.isLoading,
+    isSeriesLoadError: invoiceSeriesQuery.isError,
+    seriesLoadError: invoiceSeriesQuery.error,
 
     //
     currencyCode,
diff --git a/modules/customer-invoices/src/web/proformas/update/ui/editors/proforma-update-editor-form.tsx b/modules/customer-invoices/src/web/proformas/update/ui/editors/proforma-update-editor-form.tsx
index f224fe4c..61db6a12 100644
--- a/modules/customer-invoices/src/web/proformas/update/ui/editors/proforma-update-editor-form.tsx
+++ b/modules/customer-invoices/src/web/proformas/update/ui/editors/proforma-update-editor-form.tsx
@@ -1,6 +1,7 @@
 // modules/customer-invoices/src/web/proformas/update/ui/blocks/proforma-update-editor.tsx
 
 import type { CustomerSelectionOption } from "@erp/customers";
+import type { SelectFieldItem } from "@repo/rdx-ui/components";
 import { preventEnterKeySubmitForm } from "@repo/rdx-ui/helpers";
 import { cn } from "@repo/shadcn-ui/lib/utils";
 
@@ -27,6 +28,7 @@ type ProformaUpdateEditorProps = {
   selectedCustomer?: CustomerSelectionOption | null;
   onChangeCustomerClick: () => void;
   onCreateCustomerClick: () => void;
+  seriesOptions: SelectFieldItem[];
 
   itemsCtrl: UseUpdateProformaItemsControllerResult;
   taxCtrl: UseUpdateProformaTaxControllerResult;
@@ -44,6 +46,7 @@ export const ProformaUpdateEditorForm = ({
   selectedCustomer,
   onChangeCustomerClick,
   onCreateCustomerClick,
+  seriesOptions,
   itemsCtrl,
   taxCtrl,
   totalsCtrl,
@@ -58,7 +61,11 @@ export const ProformaUpdateEditorForm = ({
         <div className="grid grid-cols-1 2xl:grid-cols-4 gap-6 2xl:gap-12">
           <div className="2xl:col-span-3 space-y-6 gap-6 2xl:gap-12 2xl:space-y-12">
             <div className="grid 2xl:grid-cols-3 gap-6 2xl:gap-6 space-y-12 2xl:space-y-12">
-              <ProformaUpdateHeaderEditor className="2xl:col-span-full" disabled={isSubmitting} />
+              <ProformaUpdateHeaderEditor
+                className="2xl:col-span-full"
+                disabled={isSubmitting}
+                seriesOptions={seriesOptions}
+              />
             </div>
 
             <ProformaUpdateItemsEditor
diff --git a/modules/customer-invoices/src/web/proformas/update/ui/editors/proforma-update-header-editor.tsx b/modules/customer-invoices/src/web/proformas/update/ui/editors/proforma-update-header-editor.tsx
index 6936ce5f..6b0c9459 100644
--- a/modules/customer-invoices/src/web/proformas/update/ui/editors/proforma-update-header-editor.tsx
+++ b/modules/customer-invoices/src/web/proformas/update/ui/editors/proforma-update-header-editor.tsx
@@ -3,6 +3,7 @@ import {
   FormSectionCard,
   FormSectionGrid,
   SelectField,
+  type SelectFieldItem,
   TextAreaField,
   TextField,
 } from "@repo/rdx-ui/components";
@@ -12,6 +13,7 @@ import { FileTextIcon } from "lucide-react";
 import { useTranslation } from "../../../../i18n";
 
 interface ProformaUpdateHeaderEditorProps {
+  seriesOptions: SelectFieldItem[];
   disabled?: boolean;
   readOnly?: boolean;
 
@@ -19,6 +21,7 @@ interface ProformaUpdateHeaderEditorProps {
 }
 
 export const ProformaUpdateHeaderEditor = ({
+  seriesOptions,
   disabled = false,
   readOnly = false,
   className,
@@ -33,15 +36,6 @@ export const ProformaUpdateHeaderEditor = ({
       title={t("form_groups.proformas.basic_info.title")}
     >
       <FormSectionGrid>
-        <SelectField
-          className="md:col-span-1"
-          disabled={disabled}
-          label={t("form_fields.proformas.series.label")}
-          name="series"
-          placeholder={t("form_fields.proformas.series.placeholder")}
-          readOnly={readOnly}
-        />
-
         <TextField
           className="md:col-span-2"
           disabled={disabled}
@@ -66,6 +60,16 @@ export const ProformaUpdateHeaderEditor = ({
           readOnly={readOnly}
         />
 
+        <SelectField
+          className="md:col-span-1"
+          disabled={disabled}
+          items={seriesOptions}
+          label={t("form_fields.proformas.series.label")}
+          name="series"
+          placeholder={t("form_fields.proformas.series.placeholder")}
+          readOnly={readOnly}
+        />
+
         <DatePickerField
           className="md:col-span-2"
           disabled={disabled}
diff --git a/modules/customer-invoices/src/web/proformas/update/ui/pages/proforma-update-page.tsx b/modules/customer-invoices/src/web/proformas/update/ui/pages/proforma-update-page.tsx
index 19198a2b..97a7384a 100644
--- a/modules/customer-invoices/src/web/proformas/update/ui/pages/proforma-update-page.tsx
+++ b/modules/customer-invoices/src/web/proformas/update/ui/pages/proforma-update-page.tsx
@@ -99,6 +99,23 @@ export const ProformaUpdatePage = () => {
               title={t("pages.proformas.update.error_title", "No se pudo guardar los cambios")}
             />
           )}
+
+          {updateCtrl.isSeriesLoadError && (
+            <ErrorAlert
+              message={
+                updateCtrl.seriesLoadError instanceof Error
+                  ? updateCtrl.seriesLoadError.message
+                  : t(
+                      "pages.proformas.update.series_load_error.message",
+                      "Inténtalo de nuevo más tarde."
+                    )
+              }
+              title={t(
+                "pages.proformas.update.series_load_error.title",
+                "No se pudieron cargar las series de facturación"
+              )}
+            />
+          )}
           <div className="flex-1 overflow-y-auto">
             <ProformaUpdateEditorForm
               formId={updateCtrl.formId}
@@ -110,6 +127,7 @@ export const ProformaUpdatePage = () => {
               onSubmit={updateCtrl.onSubmit}
               paymentCtrl={updateCtrl.paymentCtrl}
               selectedCustomer={updateCtrl.selectedCustomer}
+              seriesOptions={updateCtrl.seriesOptions}
               taxCtrl={updateCtrl.taxCtrl}
               totalsCtrl={updateCtrl.totalsCtrl}
             />