diff --git a/src/hiero_sdk_python/query/account_balance_query.py b/src/hiero_sdk_python/query/account_balance_query.py
index 82e3b6578..56bcacc7c 100644
--- a/src/hiero_sdk_python/query/account_balance_query.py
+++ b/src/hiero_sdk_python/query/account_balance_query.py
@@ -172,7 +172,7 @@ def _get_query_response(self, response: Any) -> crypto_get_account_balance_pb2.C
         """
         return response.cryptogetAccountBalance
 
-    def _is_payment_required(self):
+    def _is_payment_required(self) -> bool:
         """
         Account balance query does not require payment.