diff --git a/backend/api/services/CreditTradeService.py b/backend/api/services/CreditTradeService.py
index c7e551dfe..d0b24201e 100644
--- a/backend/api/services/CreditTradeService.py
+++ b/backend/api/services/CreditTradeService.py
@@ -164,9 +164,9 @@ def calculate_transfer_category(agreement_date, proposal_date, category_d_select
         delta = relativedelta(proposal_date, agreement_date)
         difference_in_months = delta.years * 12 + delta.months
 
-        if difference_in_months <= 6:
+        if (difference_in_months == 6 and delta.days == 0) or difference_in_months < 6:
             return CreditTradeCategory.objects.get(category="A")
-        elif 6 < difference_in_months <= 12:
+        elif (difference_in_months == 12 and delta.days == 0) or (6 <= difference_in_months < 12):
             return CreditTradeCategory.objects.get(category="B")
         else:
             return CreditTradeCategory.objects.get(category="C")