diff --git a/src/__tests__/nas-document-manager.test.ts b/src/__tests__/nas-document-manager.test.ts
new file mode 100644
index 0000000..02b1ba0
--- /dev/null
+++ b/src/__tests__/nas-document-manager.test.ts
@@ -0,0 +1,56 @@
+import { describe, it, expect, beforeEach, afterEach } from "vitest";
+import fs from "fs";
+import os from "os";
+import path from "path";
+import { NasDocumentManager } from "../services/nas-financials-manager";
+
+/**
+ * Generic NAS archival manager backing both the invoices NAS (NAS_INVOICES) and
+ * the orders NAS (NAS_ORDERS). Uses an isolated temp dir via the constructor
+ * seam so it is deterministic and passes even where the real NAS (Z:) is not
+ * mounted. Layout: {base}/Vydané/YYYY/MM/<n>.pdf — diacritics preserved.
+ */
+describe("NasDocumentManager issued-PDF round-trip", () => {
+  let tmpBase: string;
+  let nas: NasDocumentManager;
+
+  beforeEach(() => {
+    tmpBase = fs.mkdtempSync(path.join(os.tmpdir(), "nas-doc-"));
+    nas = new NasDocumentManager(tmpBase);
+  });
+
+  afterEach(() => {
+    fs.rmSync(tmpBase, { recursive: true, force: true });
+  });
+
+  it("saves an issued PDF under Vydané/YYYY/MM/<number>.pdf and reads it back", () => {
+    const buf = Buffer.from("%PDF-1.4 fake order pdf bytes", "utf8");
+    const rel = nas.saveIssuedPdf("25P0001", 2026, 6, buf);
+
+    expect(rel).toBe("Vydané/2026/06/25P0001.pdf");
+    const onDisk = path.join(tmpBase, "Vydané", "2026", "06", "25P0001.pdf");
+    expect(fs.existsSync(onDisk)).toBe(true);
+
+    const read = nas.readIssued(rel!);
+    expect(read).not.toBeNull();
+    expect(read!.fileName).toBe("25P0001.pdf");
+    expect(read!.data.equals(buf)).toBe(true);
+  });
+
+  it("cleanIssued removes a previously-saved PDF across year/month folders", () => {
+    const buf = Buffer.from("pdf", "utf8");
+    const rel = nas.saveIssuedPdf("25P0002", 2026, 6, buf);
+    expect(nas.readIssued(rel!)).not.toBeNull();
+
+    nas.cleanIssued("25P0002");
+    expect(nas.readIssued(rel!)).toBeNull();
+  });
+
+  it("an unconfigured (empty basePath) manager is not configured and saves nothing", () => {
+    const blank = new NasDocumentManager("");
+    expect(blank.isConfigured()).toBe(false);
+    expect(
+      blank.saveIssuedPdf("25P0003", 2026, 6, Buffer.from("x")),
+    ).toBeNull();
+  });
+});
diff --git a/src/admin/pages/IssuedOrderDetail.tsx b/src/admin/pages/IssuedOrderDetail.tsx
index 8e73ab6..d0878db 100644
--- a/src/admin/pages/IssuedOrderDetail.tsx
+++ b/src/admin/pages/IssuedOrderDetail.tsx
@@ -775,6 +775,18 @@ export default function IssuedOrderDetail() {
       alert.success(
         isEdit ? "Objednávka byla uložena" : "Objednávka byla vytvořena",
       );
+
+      // Archive the PDF to NAS for any non-draft order (create-as-sent,
+      // finalize draft→sent, or editing an already-live order). A draft has no
+      // PO number, so it is skipped (the backend also guards on po_number).
+      // Fire-and-forget: never block the success toast or navigation.
+      const recordId = isEdit ? id : data.id;
+      const effectiveStatus = targetStatus ?? form.status;
+      if (recordId && effectiveStatus !== "draft") {
+        apiFetch(`${API_BASE}/issued-orders-pdf/${recordId}?save=1`).catch(
+          () => {},
+        );
+      }
       // Reflect the just-saved status locally. On CREATE the component is reused
       // for the redirect to the new order's detail and the one-shot edit-mode
       // hydration won't re-run (dataReady stays true), so without this the page
diff --git a/src/admin/pages/Settings.tsx b/src/admin/pages/Settings.tsx
index 84191c5..8204403 100644
--- a/src/admin/pages/Settings.tsx
+++ b/src/admin/pages/Settings.tsx
@@ -758,7 +758,8 @@ export default function Settings() {
         {(
           [
             ["Projekty", si.nas?.projects],
-            ["Finance", si.nas?.financials],
+            ["Faktury", si.nas?.invoices],
+            ["Objednávky", si.nas?.orders],
             ["Nabídky", si.nas?.offers],
           ] as [string, Record<string, any>][]
         ).map(([label, info]) => (
diff --git a/src/config/env.ts b/src/config/env.ts
index 5f28949..8f36a0c 100644
--- a/src/config/env.ts
+++ b/src/config/env.ts
@@ -67,7 +67,9 @@ export const config = {
 
   nas: {
     path: process.env.NAS_PATH || "Z:/02_PROJEKTY",
-    financialsPath: process.env.NAS_FINANCIALS_PATH || "",
+    invoicesPath:
+      process.env.NAS_INVOICES || process.env.NAS_FINANCIALS_PATH || "",
+    ordersPath: process.env.NAS_ORDERS || "",
     offersPath: process.env.NAS_OFFERS_PATH || "",
     maxUploadSize: (() => {
       const parsed = parseInt(process.env.MAX_UPLOAD_SIZE || "52428800", 10);
diff --git a/src/routes/admin/company-settings.ts b/src/routes/admin/company-settings.ts
index 9c0c3b8..0bbb506 100644
--- a/src/routes/admin/company-settings.ts
+++ b/src/routes/admin/company-settings.ts
@@ -15,7 +15,10 @@ import { invalidateSettingsCache } from "../../services/system-settings";
 import os from "os";
 import { config } from "../../config/env";
 import { NasFileManager } from "../../services/nas-file-manager";
-import { nasFinancialsManager } from "../../services/nas-financials-manager";
+import {
+  nasInvoicesManager,
+  nasOrdersManager,
+} from "../../services/nas-financials-manager";
 import { nasOffersManager } from "../../services/nas-offers-manager";
 
 /** Encode custom_fields + supplier_field_order into a single JSON blob (matching PHP format) */
@@ -420,8 +423,11 @@ export default async function companySettingsRoutes(
           projects: {
             configured: projectNas.isConfigured(),
           },
-          financials: {
-            configured: nasFinancialsManager.isConfigured(),
+          invoices: {
+            configured: nasInvoicesManager.isConfigured(),
+          },
+          orders: {
+            configured: nasOrdersManager.isConfigured(),
           },
           offers: {
             configured: nasOffersManager.isConfigured(),
diff --git a/src/routes/admin/invoices-pdf.ts b/src/routes/admin/invoices-pdf.ts
index 1415068..8841f5e 100644
--- a/src/routes/admin/invoices-pdf.ts
+++ b/src/routes/admin/invoices-pdf.ts
@@ -3,7 +3,7 @@ import QRCode from "qrcode";
 import prisma from "../../config/database";
 import { requirePermission } from "../../middleware/auth";
 import { localDateCzStr } from "../../utils/date";
-import { nasFinancialsManager } from "../../services/nas-financials-manager";
+import { nasInvoicesManager } from "../../services/nas-financials-manager";
 import { htmlToPdf } from "../../utils/html-to-pdf";
 import { getRate } from "../../services/exchange-rates";
 import { localDateStr } from "../../utils/date";
@@ -1067,15 +1067,15 @@ ${indentCSS}
         // Save PDF to NAS
         if (
           saveMode &&
-          nasFinancialsManager.isConfigured() &&
+          nasInvoicesManager.isConfigured() &&
           invoice.invoice_number
         ) {
           const issueDate = invoice.issue_date
             ? new Date(invoice.issue_date)
             : new Date();
-          nasFinancialsManager.cleanIssuedInvoice(invoice.invoice_number!);
+          nasInvoicesManager.cleanIssued(invoice.invoice_number!);
           const pdfBuffer = await htmlToPdf(html);
-          nasFinancialsManager.saveIssuedInvoicePdf(
+          nasInvoicesManager.saveIssuedPdf(
             invoice.invoice_number!,
             issueDate.getFullYear(),
             issueDate.getMonth() + 1,
diff --git a/src/routes/admin/invoices.ts b/src/routes/admin/invoices.ts
index cd02a5d..6813841 100644
--- a/src/routes/admin/invoices.ts
+++ b/src/routes/admin/invoices.ts
@@ -21,7 +21,7 @@ import {
   updateInvoice,
   deleteInvoice,
 } from "../../services/invoices.service";
-import { nasFinancialsManager } from "../../services/nas-financials-manager";
+import { nasInvoicesManager } from "../../services/nas-financials-manager";
 
 export default async function invoicesRoutes(
   fastify: FastifyInstance,
@@ -202,7 +202,7 @@ export default async function invoicesRoutes(
 
       // Delete PDF from NAS
       if (existing.invoice_number) {
-        await nasFinancialsManager.cleanIssuedInvoice(existing.invoice_number);
+        await nasInvoicesManager.cleanIssued(existing.invoice_number);
       }
 
       await logAudit({
@@ -233,7 +233,7 @@ export default async function invoicesRoutes(
 
       const d = new Date(invoice.issue_date);
       const relPath = `Vydané/${d.getFullYear()}/${String(d.getMonth() + 1).padStart(2, "0")}/${invoice.invoice_number}.pdf`;
-      const file = nasFinancialsManager.readIssuedInvoice(relPath);
+      const file = nasInvoicesManager.readIssued(relPath);
       if (!file) return error(reply, "PDF soubor nenalezen", 404);
 
       const safeName = invoice.invoice_number.replace(/[\r\n"]/g, "");
diff --git a/src/routes/admin/issued-orders-pdf.ts b/src/routes/admin/issued-orders-pdf.ts
index bf69654..88d1c50 100644
--- a/src/routes/admin/issued-orders-pdf.ts
+++ b/src/routes/admin/issued-orders-pdf.ts
@@ -1,9 +1,10 @@
 import { FastifyInstance } from "fastify";
 import prisma from "../../config/database";
 import { requirePermission } from "../../middleware/auth";
-import { parseId } from "../../utils/response";
+import { parseId, success } from "../../utils/response";
 import { localDateCzStr } from "../../utils/date";
 import { htmlToPdf } from "../../utils/html-to-pdf";
+import { nasOrdersManager } from "../../services/nas-financials-manager";
 import createDOMPurify from "dompurify";
 import { JSDOM } from "jsdom";
 
@@ -856,6 +857,25 @@ export default async function issuedOrdersPdfRoutes(fastify: FastifyInstance) {
           settings,
           lang,
         );
+
+        // ?save=1 → archive the PDF to NAS instead of returning it (mirrors
+        // invoices-pdf). A draft has no po_number → the guard skips it.
+        const saveMode = query.save === "1";
+        if (saveMode && nasOrdersManager.isConfigured() && order.po_number) {
+          const baseDate = order.order_date
+            ? new Date(order.order_date)
+            : new Date();
+          nasOrdersManager.cleanIssued(order.po_number);
+          const pdfBuffer = await htmlToPdf(html);
+          nasOrdersManager.saveIssuedPdf(
+            order.po_number,
+            baseDate.getFullYear(),
+            baseDate.getMonth() + 1,
+            pdfBuffer,
+          );
+          return success(reply, null, 200, "PDF uloženo");
+        }
+
         const pdf = await htmlToPdf(html);
         const filename = `Objednavka-${order.po_number || String(id)}.pdf`;
         return reply
diff --git a/src/routes/admin/received-invoices.ts b/src/routes/admin/received-invoices.ts
index dc2efaf..c344693 100644
--- a/src/routes/admin/received-invoices.ts
+++ b/src/routes/admin/received-invoices.ts
@@ -12,7 +12,7 @@ import {
   CreateReceivedInvoiceSchema,
   UpdateReceivedInvoiceSchema,
 } from "../../schemas/received-invoices.schema";
-import { nasFinancialsManager } from "../../services/nas-financials-manager";
+import { nasInvoicesManager } from "../../services/nas-financials-manager";
 import { toCzk } from "../../services/exchange-rates";
 import path from "path";
 
@@ -203,12 +203,12 @@ export default async function receivedInvoicesRoutes(
       });
       if (!invoice?.file_name) return error(reply, "Soubor nenalezen", 404);
 
-      const relPath = nasFinancialsManager.buildReceivedPath(
+      const relPath = nasInvoicesManager.buildReceivedPath(
         invoice.file_name,
         invoice.year,
         invoice.month,
       );
-      const nasFile = nasFinancialsManager.readReceivedInvoice(relPath);
+      const nasFile = nasInvoicesManager.readReceived(relPath);
       if (!nasFile) return error(reply, "Soubor na NAS nenalezen", 404);
 
       const mime = invoice.file_mime || "application/pdf";
@@ -295,7 +295,7 @@ export default async function receivedInvoicesRoutes(
         const now = new Date();
         const createdIds: number[] = [];
 
-        const useNas = nasFinancialsManager.isConfigured();
+        const useNas = nasInvoicesManager.isConfigured();
 
         for (let i = 0; i < files.length; i++) {
           const file = files[i];
@@ -319,7 +319,7 @@ export default async function receivedInvoicesRoutes(
             return error(reply, "NAS úložiště není nakonfigurováno", 503);
           }
 
-          const nasResult = nasFinancialsManager.saveReceivedInvoice(
+          const nasResult = nasInvoicesManager.saveReceived(
             file.name,
             invoiceYear,
             invoiceMonth,
@@ -584,12 +584,12 @@ export default async function receivedInvoicesRoutes(
       await prisma.received_invoices.delete({ where: { id } });
 
       if (existing.file_name) {
-        const relPath = nasFinancialsManager.buildReceivedPath(
+        const relPath = nasInvoicesManager.buildReceivedPath(
           existing.file_name,
           existing.year,
           existing.month,
         );
-        nasFinancialsManager.deleteReceivedInvoice(relPath);
+        nasInvoicesManager.deleteReceived(relPath);
       }
       await logAudit({
         request,
diff --git a/src/routes/admin/warehouse.ts b/src/routes/admin/warehouse.ts
index 8bf85f5..f75d47f 100644
--- a/src/routes/admin/warehouse.ts
+++ b/src/routes/admin/warehouse.ts
@@ -7,7 +7,7 @@ import { logAudit } from "../../services/audit";
 import { success, error, parseId, paginated } from "../../utils/response";
 import { parsePagination, buildPaginationMeta } from "../../utils/pagination";
 import { parseBody } from "../../schemas/common";
-import { nasFinancialsManager } from "../../services/nas-financials-manager";
+import { nasInvoicesManager } from "../../services/nas-financials-manager";
 import {
   getItemAvailableQty,
   getItemTotalStock,
@@ -1315,11 +1315,11 @@ export default async function warehouseRoutes(
       const year = now.getFullYear();
       const month = now.getMonth() + 1;
 
-      if (!nasFinancialsManager.isConfigured()) {
+      if (!nasInvoicesManager.isConfigured()) {
         return error(reply, "Úložiště souborů není dostupné", 503);
       }
 
-      const result = nasFinancialsManager.saveReceivedInvoice(
+      const result = nasInvoicesManager.saveReceived(
         part.filename,
         year,
         month,
@@ -1344,9 +1344,7 @@ export default async function warehouseRoutes(
           },
         });
       } catch (e) {
-        const removed = nasFinancialsManager.deleteReceivedInvoice(
-          result.filePath,
-        );
+        const removed = nasInvoicesManager.deleteReceived(result.filePath);
         request.log.error(
           { err: e, filePath: result.filePath, orphanRemoved: removed },
           "warehouse attachment DB insert failed after NAS write; rolled back NAS file",
@@ -1392,7 +1390,7 @@ export default async function warehouseRoutes(
       // Delete file from NAS. A failure here is non-fatal (we still remove the
       // DB row) but must not be silent — log it so an undeleted NAS file is
       // visible rather than leaking quietly.
-      const nasDeleted = nasFinancialsManager.deleteReceivedInvoice(
+      const nasDeleted = nasInvoicesManager.deleteReceived(
         attachment.file_path,
       );
       if (!nasDeleted) {
diff --git a/src/services/nas-financials-manager.ts b/src/services/nas-financials-manager.ts
index 1167426..915db86 100644
--- a/src/services/nas-financials-manager.ts
+++ b/src/services/nas-financials-manager.ts
@@ -3,7 +3,10 @@ import path from "path";
 import { config } from "../config/env";
 
 /**
- * NAS storage for financial documents.
+ * NAS storage for financial/order documents (issued invoices, received
+ * invoices, issued purchase orders — any document archived under the standard
+ * Vydané/Přijaté layout). One instance is bound to a single base path, so a
+ * separate singleton is exported per document family (invoices vs orders).
  * Structure: {basePath}/Vydané/YYYY/MM/ and {basePath}/Přijaté/YYYY/MM/
  *
  * PERFORMANCE NOTE (audit finding — DEFERRED, intentional):
@@ -11,9 +14,9 @@ import { config } from "../config/env";
  * readFileSync/readdirSync/statSync). When basePath is a network (SMB) share, a
  * slow or hung NAS will BLOCK the Node event loop for the duration of the call,
  * stalling all other requests in the same process. This is a known trade-off:
- * the file sizes are small (invoice PDFs), the call sites are low-frequency
- * admin operations, and the synchronous API lets callers treat a returned path
- * as a verified, durable write (see migrate-received-invoices-to-nas.ts, which
+ * the file sizes are small (PDFs), the call sites are low-frequency admin
+ * operations, and the synchronous API lets callers treat a returned path as a
+ * verified, durable write (see migrate-received-invoices-to-nas.ts, which
  * relies on this to safely null out the DB BLOB). Converting to the async
  * fs.promises API is a large, cross-cutting change touching every caller and
  * their error handling — deliberately NOT done here to keep this fix scoped.
@@ -22,12 +25,11 @@ import { config } from "../config/env";
 const DIR_ISSUED = "Vydané";
 const DIR_RECEIVED = "Přijaté";
 
-class NasFinancialsManager {
+export class NasDocumentManager {
   private readonly basePath: string;
 
-  constructor() {
-    const raw = config.nas.financialsPath;
-    this.basePath = raw ? path.resolve(raw).replace(/\\/g, "/") : "";
+  constructor(basePath: string) {
+    this.basePath = basePath ? path.resolve(basePath).replace(/\\/g, "/") : "";
   }
 
   isConfigured(): boolean {
@@ -48,12 +50,12 @@ class NasFinancialsManager {
     }
   }
 
-  // ── Created (issued) invoices ────────────────────────────────────
+  // ── Created (issued) documents ───────────────────────────────────
 
-  /** Remove any existing PDF for this invoice number across all year/month folders */
-  cleanIssuedInvoice(invoiceNumber: string): void {
+  /** Remove any existing PDF for this document number across all year/month folders */
+  cleanIssued(documentNumber: string): void {
     if (!this.basePath) return;
-    const safeName = this.sanitizeFilename(invoiceNumber) + ".pdf";
+    const safeName = this.sanitizeFilename(documentNumber) + ".pdf";
     const issuedDir = path.join(this.basePath, DIR_ISSUED);
     try {
       if (!fs.existsSync(issuedDir)) return;
@@ -80,20 +82,20 @@ class NasFinancialsManager {
       }
     } catch (err) {
       console.error(
-        "[nas-financials-manager] cleanIssuedInvoice failed for:",
-        invoiceNumber,
+        "[nas-financials-manager] cleanIssued failed for:",
+        documentNumber,
         err,
       );
     }
   }
 
-  saveIssuedInvoicePdf(
-    invoiceNumber: string,
+  saveIssuedPdf(
+    documentNumber: string,
     year: number,
     month: number,
     pdfBuffer: Buffer,
   ): string | null {
-    // Guard parity with saveReceivedInvoice: without this, an unconfigured
+    // Guard parity with saveReceived: without this, an unconfigured
     // (empty) basePath would let ensureDir build a RELATIVE path and write the
     // PDF into the process CWD instead of the NAS. Bail out instead.
     if (!this.isConfigured()) return null;
@@ -101,7 +103,7 @@ class NasFinancialsManager {
     const dir = this.ensureDir(DIR_ISSUED, year, month);
     if (!dir) return null;
 
-    const safeName = this.sanitizeFilename(invoiceNumber) + ".pdf";
+    const safeName = this.sanitizeFilename(documentNumber) + ".pdf";
     const fullPath = this.uniquePath(dir, safeName);
 
     try {
@@ -109,7 +111,7 @@ class NasFinancialsManager {
       return `${DIR_ISSUED}/${year}/${this.pad(month)}/${path.basename(fullPath)}`;
     } catch (err) {
       console.error(
-        "[nas-financials-manager] write failed for issued invoice:",
+        "[nas-financials-manager] write failed for issued document:",
         fullPath,
         err,
       );
@@ -117,9 +119,7 @@ class NasFinancialsManager {
     }
   }
 
-  readIssuedInvoice(
-    relativePath: string,
-  ): { data: Buffer; fileName: string } | null {
+  readIssued(relativePath: string): { data: Buffer; fileName: string } | null {
     const fullPath = this.resolveSafePath(relativePath);
     if (!fullPath) return null;
     try {
@@ -127,7 +127,7 @@ class NasFinancialsManager {
       return { data, fileName: path.basename(fullPath) };
     } catch (err) {
       console.error(
-        "[nas-financials-manager] read failed for issued invoice:",
+        "[nas-financials-manager] read failed for issued document:",
         fullPath,
         err,
       );
@@ -135,7 +135,7 @@ class NasFinancialsManager {
     }
   }
 
-  deleteIssuedInvoice(relativePath: string): boolean {
+  deleteIssued(relativePath: string): boolean {
     const fullPath = this.resolveSafePath(relativePath);
     if (!fullPath) return false;
     try {
@@ -143,7 +143,7 @@ class NasFinancialsManager {
       return true;
     } catch (err) {
       console.error(
-        "[nas-financials-manager] delete failed for issued invoice:",
+        "[nas-financials-manager] delete failed for issued document:",
         fullPath,
         err,
       );
@@ -151,21 +151,21 @@ class NasFinancialsManager {
     }
   }
 
-  // ── Received invoices ────────────────────────────────────────────
+  // ── Received documents ───────────────────────────────────────────
 
   buildReceivedPath(fileName: string, year: number, month: number): string {
     const safeName = this.sanitizeFilename(fileName) || "file";
     return `${DIR_RECEIVED}/${year}/${this.pad(month)}/${safeName}`;
   }
 
-  saveReceivedInvoice(
+  saveReceived(
     originalName: string,
     year: number,
     month: number,
     fileBuffer: Buffer,
   ): { filePath: string } | { error: string } {
     if (!this.isConfigured()) {
-      return { error: "NAS financials path is not configured" };
+      return { error: "NAS path is not configured" };
     }
 
     const dir = this.ensureDir(DIR_RECEIVED, year, month);
@@ -188,9 +188,7 @@ class NasFinancialsManager {
     }
   }
 
-  readReceivedInvoice(
-    filePath: string,
-  ): { data: Buffer; fileName: string } | null {
+  readReceived(filePath: string): { data: Buffer; fileName: string } | null {
     const fullPath = this.resolveSafePath(filePath);
     if (!fullPath) return null;
 
@@ -199,7 +197,7 @@ class NasFinancialsManager {
       return { data, fileName: path.basename(fullPath) };
     } catch (err) {
       console.error(
-        "[nas-financials-manager] read failed for received invoice:",
+        "[nas-financials-manager] read failed for received document:",
         fullPath,
         err,
       );
@@ -207,7 +205,7 @@ class NasFinancialsManager {
     }
   }
 
-  deleteReceivedInvoice(filePath: string): boolean {
+  deleteReceived(filePath: string): boolean {
     const fullPath = this.resolveSafePath(filePath);
     if (!fullPath) return false;
 
@@ -216,7 +214,7 @@ class NasFinancialsManager {
       return true;
     } catch (err) {
       console.error(
-        "[nas-financials-manager] delete failed for received invoice:",
+        "[nas-financials-manager] delete failed for received document:",
         fullPath,
         err,
       );
@@ -303,4 +301,7 @@ class NasFinancialsManager {
   }
 }
 
-export const nasFinancialsManager = new NasFinancialsManager();
+export const nasInvoicesManager = new NasDocumentManager(
+  config.nas.invoicesPath,
+);
+export const nasOrdersManager = new NasDocumentManager(config.nas.ordersPath);