diff --git a/services/order-service-net/src/OrderService.API/Application/Commands/PayOrderCommandHandler.cs b/services/order-service-net/src/OrderService.API/Application/Commands/PayOrderCommandHandler.cs
index 7a935502..0f7269d7 100644
--- a/services/order-service-net/src/OrderService.API/Application/Commands/PayOrderCommandHandler.cs
+++ b/services/order-service-net/src/OrderService.API/Application/Commands/PayOrderCommandHandler.cs
@@ -87,9 +87,11 @@ public class PayOrderCommandHandler : IRequestHandler<PayOrderCommand, PayOrderR
         var transactionId = $"CASH-{DateTime.UtcNow:yyyyMMddHHmmss}-{Guid.NewGuid().ToString("N")[..8].ToUpper()}";
         var changeAmount = amountTendered - order.TotalAmount;
 
-        // EN: Mark as paid and processing / VI: Đánh dấu đã thanh toán và đang xử lý
+        // EN: Mark as paid → processing → completed (POS direct sale — no kitchen/prep step)
+        // VI: Đánh dấu đã thanh toán → đang xử lý → hoàn thành (POS bán trực tiếp — không qua bếp)
         order.MarkAsPaid("cash", transactionId, amountTendered);
         order.MarkAsProcessing();
+        order.MarkAsCompleted();
 
         await _orderRepository.UnitOfWork.SaveEntitiesAsync(cancellationToken);
 
@@ -114,9 +116,11 @@ public class PayOrderCommandHandler : IRequestHandler<PayOrderCommand, PayOrderR
     {
         var transactionId = $"CARD-{DateTime.UtcNow:yyyyMMddHHmmss}-{Guid.NewGuid().ToString("N")[..8].ToUpper()}";
 
-        // EN: Mark as paid and processing / VI: Đánh dấu đã thanh toán và đang xử lý
+        // EN: Mark as paid → processing → completed (POS direct sale — card/qr/transfer confirmed at terminal)
+        // VI: Đánh dấu đã thanh toán → đang xử lý → hoàn thành (POS bán trực tiếp — thẻ/QR/CK xác nhận tại máy)
         order.MarkAsPaid(request.PaymentMethod.ToLowerInvariant(), transactionId);
         order.MarkAsProcessing();
+        order.MarkAsCompleted();
 
         await _orderRepository.UnitOfWork.SaveEntitiesAsync(cancellationToken);