diff --git a/src/platforms/CourierbutlerPlatform.php b/src/platforms/CourierbutlerPlatform.php
index 489ca45..4250d5d 100644
--- a/src/platforms/CourierbutlerPlatform.php
+++ b/src/platforms/CourierbutlerPlatform.php
@@ -225,8 +225,13 @@ protected function formatOrder(Order $orderClass): array
                 "consignee_telephone" => $orderClass->recipient->phone,
                 "consignee_mobile" => $orderClass->recipient->phone,
                 "consignee_email" => $orderClass->recipient->email,
+//                "consignee_tariff" => $orderClass->taxesNumber,
             ],
-            "invoice" => $invoice
+            "invoice" => $invoice,
+            "extra_service" => [
+                "extra_servicecode" => "IO",
+                "extra_servicevalue" => $orderClass->taxesNumber
+            ]
         ];
     }
 }