diff --git a/transaction_processor.py b/transaction_processor.py
index 1106d47..ceaedd4 100644
--- a/transaction_processor.py
+++ b/transaction_processor.py
@@ -736,6 +736,14 @@ class LamassuTransactionProcessor:
         """Send Bitcoin payments to DCA clients"""
         try:
             transaction_id = transaction["transaction_id"]
+            transaction_time = transaction.get("transaction_time")
+            
+            # Normalize transaction_time to UTC if present
+            if transaction_time is not None:
+                if transaction_time.tzinfo is None:
+                    transaction_time = transaction_time.replace(tzinfo=timezone.utc)
+                elif transaction_time.tzinfo != timezone.utc:
+                    transaction_time = transaction_time.astimezone(timezone.utc)
             
             for client_id, distribution in distributions.items():
                 try: