diff --git a/api/v1/serializers/payment.py b/api/v1/serializers/payment.py
index 79a8d464..432310d8 100644
--- a/api/v1/serializers/payment.py
+++ b/api/v1/serializers/payment.py
@@ -46,8 +46,29 @@ class AuthorBalanceCreateSerializer(serializers.ModelSerializer):
         return AuthorBalanceSerializer(instance, context=self.context).to_representation(instance)
 
 
+class PaymentSerializer(serializers.ModelSerializer):
+    user = UserSerializer()
+
+    class Meta:
+        model = Payment
+        fields = BASE_PAYMENT_FIELDS
+        read_only_fields = (
+            'id',
+            'user',
+            'created_at',
+            'update_at',
+        )
+
+    def to_representation(self, instance):
+        if isinstance(instance, CoursePayment):
+            return CoursePaymentSerializer(instance, context=self.context).to_representation(instance)
+        elif isinstance(instance, SchoolPayment):
+            return SchoolPaymentSerializer(instance, context=self.context).to_representation(instance)
+
+
 class AuthorBalanceSerializer(serializers.ModelSerializer):
     author = UserSerializer()
+    payment = serializers.SerializerMethodField()
 
     class Meta:
         model = AuthorBalance
@@ -70,25 +91,23 @@ class AuthorBalanceSerializer(serializers.ModelSerializer):
             'payment',
         )
 
-
-class PaymentCreateSerializer(serializers.ModelSerializer):
-
-    class Meta:
-        model = Payment
-        # fields = (
-        #     'weekdays',
-        #     'date_start',
-        #     'date_end',
-        # )
-        fields = '__all__'
-        read_only_fields = (
-            'id',
-            'user',
-            'created_at',
-            'update_at',
-        )
-
-
+    def get_payment(self, instance):
+        try:
+            p = instance.payment
+        except Exception:
+            return None
+        data = {
+            'id': p.id,
+            'created_at': p.created_at,
+            'amount': p.amount,
+            'data': p.data,
+        }
+        if isinstance(instance.payment, CoursePayment):
+            data['course'] = {
+                'id': p.course.id,
+                'title': p.course.title,
+            }
+        return data
 
 
 class PaymentSerializer(serializers.ModelSerializer):
@@ -112,6 +131,7 @@ class PaymentSerializer(serializers.ModelSerializer):
 
 
 class CoursePaymentCreateSerializer(serializers.ModelSerializer):
+
     class Meta:
         model = CoursePayment
         fields = BASE_PAYMENT_FIELDS + ('course',)
@@ -124,13 +144,24 @@ class CoursePaymentCreateSerializer(serializers.ModelSerializer):
         )
 
 
-class CoursePaymentSerializer(CoursePaymentCreateSerializer):
+class CoursePaymentSerializer(serializers.ModelSerializer):
     user = UserSerializer()
     course = CourseSerializer()
 
+    class Meta:
+        model = CoursePayment
+        fields = BASE_PAYMENT_FIELDS + ('course',)
+        read_only_fields = (
+            'id',
+            'user',
+            'course',
+            'created_at',
+            'update_at',
+        )
+
 
 class SchoolPaymentCreateSerializer(serializers.ModelSerializer):
-    user = UserSerializer()
+
     class Meta:
         model = SchoolPayment
         fields = BASE_PAYMENT_FIELDS + (
@@ -146,14 +177,8 @@ class SchoolPaymentCreateSerializer(serializers.ModelSerializer):
             'update_at',
         )
 
-    def to_representation(self, instance):
-        if isinstance(instance, CoursePayment):
-            return CoursePaymentSerializer(instance, context=self.context).to_representation(instance)
-        elif isinstance(instance, SchoolPayment):
-            return SchoolPaymentSerializer(instance, context=self.context).to_representation(instance)
-
 
-class SchoolPaymentSerializer(SchoolPaymentCreateSerializer):
+class SchoolPaymentSerializer(serializers.ModelSerializer):
     user = UserSerializer()
 
     class Meta:
diff --git a/api/v1/views.py b/api/v1/views.py
index b12240c2..c161a90d 100644
--- a/api/v1/views.py
+++ b/api/v1/views.py
@@ -34,7 +34,7 @@ from .serializers.payment import (
     AuthorBalanceSerializer, AuthorBalanceCreateSerializer,
     PaymentSerializer, CoursePaymentSerializer,
     SchoolPaymentSerializer,
-    PaymentCreateSerializer, CoursePaymentCreateSerializer, SchoolPaymentCreateSerializer)
+    CoursePaymentCreateSerializer, SchoolPaymentCreateSerializer)
 from .serializers.user import (
     AuthorRequestSerializer,
     UserSerializer, UserPhotoSerializer,
@@ -453,13 +453,9 @@ class AuthorRequestViewSet(ExtendedModelViewSet):
     filter_fields = ('status',)
 
 
-class PaymentViewSet(ExtendedModelViewSet):
+class PaymentViewSet(viewsets.ModelViewSet):
     queryset = Payment.objects.all()
-    serializer_class = PaymentCreateSerializer
-    serializer_class_map = {
-        'list': PaymentSerializer,
-        'retrieve': PaymentSerializer,
-    }
+    serializer_class = PaymentSerializer
     permission_classes = (IsAdmin,)
     filter_fields = ('status', 'user',)
     ordering_fields = (
@@ -472,14 +468,14 @@ class PaymentViewSet(ExtendedModelViewSet):
     def get_serializer(self, instance, *args, **kwargs):
         print('instance', type(instance), self.action)
         serializer_class = self.get_serializer_class()
-        if self.action == 'partial_update':
+        if 'update' in self.action:
             if isinstance(instance, CoursePayment):
                 serializer_class = CoursePaymentCreateSerializer
             elif isinstance(instance, SchoolPayment):
                 serializer_class = SchoolPaymentCreateSerializer
         print('serializer_class', serializer_class)
         kwargs['context'] = self.get_serializer_context()
-        return serializer_class(*args, **kwargs)
+        return serializer_class(instance, *args, **kwargs)
 
     def get_queryset(self):
         queryset = self.queryset
diff --git a/apps/user/models.py b/apps/user/models.py
index 0df7cd01..47008960 100644
--- a/apps/user/models.py
+++ b/apps/user/models.py
@@ -92,7 +92,7 @@ class User(AbstractUser):
 
     @property
     def balance(self):
-        aggregate = self.balances.filter(
+        income = self.balances.filter(
                 type=0,
                 payment__isnull=False,
                 payment__status__isnull=False
@@ -100,9 +100,13 @@ class User(AbstractUser):
             models.Sum('amount'),
             models.Sum('commission'),
         )
-        amount = aggregate.get('amount__sum') or 0
-        commission = aggregate.get('commission__sum') or 0
-        return amount - commission
+        income_amount = income.get('amount__sum') or 0
+        income_commission = income.get('commission__sum') or 0
+
+        payout = self.balances.filter(type=1, status=1).aggregate(models.Sum('amount'))
+        payout_amount = payout.get('amount__sum') or 0
+
+        return income_amount - income_commission - payout_amount
 
 
 @receiver(post_save, sender=User)