diff --git a/apps/api/app/controllers/clients_controller.ts b/apps/api/app/controllers/clients_controller.ts
index 78b7759..fd74d50 100644
--- a/apps/api/app/controllers/clients_controller.ts
+++ b/apps/api/app/controllers/clients_controller.ts
@@ -1,10 +1,22 @@
 import Client from '#models/client'
+import Invoice from '#models/invoice'
 import ClientTransformer from '#transformers/client_transformer'
+import InvoiceTransformer from '#transformers/invoice_transformer'
 import { createClientValidator, updateClientValidator } from '#validators/client'
 import { bulkComputeClientStats } from '#services/client_stats'
 import type { HttpContext } from '@adonisjs/core/http'
 import { Exception } from '@adonisjs/core/exceptions'
 
+// Priorité d'affichage : ce qui est actionnable en haut.
+const INVOICE_STATUS_PRIORITY: Record<string, number> = {
+  awaiting_user_confirmation: 0,
+  in_relance: 1,
+  pending: 2,
+  litigation: 3,
+  paid: 4,
+  cancelled: 5,
+}
+
 /**
  * Petite cohérence d'identification orgnisation : si l'utilisateur
  * n'en a pas, on est dans un état illégal V1 — on bloque ferme.
@@ -96,11 +108,27 @@ export default class ClientsController {
     const statsMap = await bulkComputeClientStats(organizationId, [client.id])
     const stats = statsMap.get(client.id)!
 
+    // Factures du client — actionnables en premier, puis échéance asc.
+    const invoices = await Invoice.query()
+      .where('organization_id', organizationId)
+      .where('client_id', client.id)
+      .preload('client')
+      .preload('plan')
+      .exec()
+
+    invoices.sort((a, b) => {
+      const dp =
+        (INVOICE_STATUS_PRIORITY[a.status] ?? 99) -
+        (INVOICE_STATUS_PRIORITY[b.status] ?? 99)
+      if (dp !== 0) return dp
+      return a.dueDate.toMillis() - b.dueDate.toMillis()
+    })
+
     return response.json({
       data: {
         ...serializeClient(client),
         ...stats,
-        invoices: [], // TODO: brancher quand le domaine Invoice arrive
+        invoices: invoices.map((inv) => new InvoiceTransformer(inv).toObject()),
       },
     })
   }