diff --git a/core/apps/finance/migrations/0015_alter_cashtransaction_expence_balance_usd_and_more.py b/core/apps/finance/migrations/0015_alter_cashtransaction_expence_balance_usd_and_more.py
new file mode 100644
index 0000000..03098ae
--- /dev/null
+++ b/core/apps/finance/migrations/0015_alter_cashtransaction_expence_balance_usd_and_more.py
@@ -0,0 +1,43 @@
+# Generated by Django 5.2.4 on 2025-09-09 15:18
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('finance', '0014_alter_expence_exchange_rate'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='cashtransaction',
+            name='expence_balance_usd',
+            field=models.BigIntegerField(default=0),
+        ),
+        migrations.AlterField(
+            model_name='cashtransaction',
+            name='expence_balance_uzs',
+            field=models.BigIntegerField(default=0),
+        ),
+        migrations.AlterField(
+            model_name='cashtransaction',
+            name='income_balance_usd',
+            field=models.BigIntegerField(default=0),
+        ),
+        migrations.AlterField(
+            model_name='cashtransaction',
+            name='income_balance_uzs',
+            field=models.BigIntegerField(default=0),
+        ),
+        migrations.AlterField(
+            model_name='cashtransaction',
+            name='total_balance_usd',
+            field=models.BigIntegerField(default=0),
+        ),
+        migrations.AlterField(
+            model_name='cashtransaction',
+            name='total_balance_uzs',
+            field=models.BigIntegerField(default=0),
+        ),
+    ]
diff --git a/core/apps/finance/models/cash_transaction.py b/core/apps/finance/models/cash_transaction.py
index 1797515..a75accc 100644
--- a/core/apps/finance/models/cash_transaction.py
+++ b/core/apps/finance/models/cash_transaction.py
@@ -28,13 +28,13 @@ class CashTransaction(BaseModel):
         CashTransactionFolder, on_delete=models.SET_NULL, related_name='cash_transactions', 
         null=True, blank=True
     )
-    total_balance_usd = models.PositiveBigIntegerField(default=0)
-    income_balance_usd = models.PositiveBigIntegerField(default=0)
-    expence_balance_usd = models.PositiveBigIntegerField(default=0)
+    total_balance_usd = models.BigIntegerField(default=0)
+    income_balance_usd = models.BigIntegerField(default=0)
+    expence_balance_usd = models.BigIntegerField(default=0)
 
-    total_balance_uzs = models.PositiveBigIntegerField(default=0)
-    income_balance_uzs = models.PositiveBigIntegerField(default=0)
-    expence_balance_uzs = models.PositiveBigIntegerField(default=0)
+    total_balance_uzs = models.BigIntegerField(default=0)
+    income_balance_uzs = models.BigIntegerField(default=0)
+    expence_balance_uzs = models.BigIntegerField(default=0)
 
     def __str__(self):
         return self.name
diff --git a/core/apps/finance/serializers/expence.py b/core/apps/finance/serializers/expence.py
index 8290ca8..a15e34b 100644
--- a/core/apps/finance/serializers/expence.py
+++ b/core/apps/finance/serializers/expence.py
@@ -40,10 +40,7 @@ class ExpenceCreateSerializer(serializers.ModelSerializer):
                     payment_type.total_uzs -= expence.price
             elif validated_data.get('currency') == 'usd':
                 cash_transaction.expence_balance_usd += expence.price
-                if cash_transaction.income_balance_usd > cash_transaction.expence_balance_usd:
-                    cash_transaction.total_balance_usd = cash_transaction.income_balance_usd - cash_transaction.expence_balance_usd
-                else:
-                    cash_transaction.total_balance_usd = 0
+                cash_transaction.total_balance_usd = cash_transaction.income_balance_usd - cash_transaction.expence_balance_usd
                 if payment_type.total_usd > expence.price:
                     payment_type.total_usd -= expence.price