diff --git a/backend/core/settings/base.py b/backend/core/settings/base.py
index 768cb77..8e49391 100644
--- a/backend/core/settings/base.py
+++ b/backend/core/settings/base.py
@@ -258,7 +258,7 @@ AZ_IRANIAN_BANK_GATEWAYS = {
     ],  
     "IS_SAFE_GET_GATEWAY_PAYMENT": True  # better to be True
 }
-DEFAULT_TAX_RATE = 20
+DEFAULT_TAX_RATE = 10
 
 
 HANDLER403 = "core.views.custom_permission_denied"