diff --git a/app/apps/api/serializers/transactions.py b/app/apps/api/serializers/transactions.py
index 467c0a0..6900220 100644
--- a/app/apps/api/serializers/transactions.py
+++ b/app/apps/api/serializers/transactions.py
@@ -47,6 +47,10 @@ class TransactionEntitySerializer(serializers.ModelSerializer):
 
 
 class InstallmentPlanSerializer(serializers.ModelSerializer):
+    category = TransactionCategoryField(required=False)
+    tags = TransactionTagField(required=False)
+    entities = TransactionEntityField(required=False)
+
     permission_classes = [IsAuthenticated]
 
     class Meta: