diff --git a/api/v1/serializers/payment.py b/api/v1/serializers/payment.py
index 93400cbf..9174177d 100644
--- a/api/v1/serializers/payment.py
+++ b/api/v1/serializers/payment.py
@@ -1,9 +1,37 @@
 from rest_framework import serializers
 
 from apps.payment.models import AuthorBalance
+from .user import UserSerializer
+
+
+class AuthorBalanceCreateSerializer(serializers.ModelSerializer):
+
+    class Meta:
+        model = AuthorBalance
+        fields = (
+            'id',
+            'author',
+            'type',
+            'amount',
+            'commission',
+            'status',
+            'payment',
+            'cause',
+        )
+
+        read_only_fields = (
+            'id',
+            'author',
+            'type',
+            'payment',
+        )
+
+    def to_representation(self, instance):
+        return AuthorBalanceSerializer(instance, context=self.context).to_representation(instance)
 
 
 class AuthorBalanceSerializer(serializers.ModelSerializer):
+    author = UserSerializer()
 
     class Meta:
         model = AuthorBalance
diff --git a/api/v1/views.py b/api/v1/views.py
index 6958934c..ad4b1402 100644
--- a/api/v1/views.py
+++ b/api/v1/views.py
@@ -24,7 +24,7 @@ from .serializers.content import (
     ImageObjectSerializer,
 )
 from .serializers.school import SchoolScheduleSerializer
-from .serializers.payment import AuthorBalanceSerializer
+from .serializers.payment import AuthorBalanceSerializer, AuthorBalanceCreateSerializer
 from .serializers.user import (
     UserSerializer, UserPhotoSerializer,
 )
@@ -43,9 +43,12 @@ User = get_user_model()
 
 class AuthorBalanceViewSet(ExtendedModelViewSet):
     queryset = AuthorBalance.objects.all()
-    serializer_class = AuthorBalanceSerializer
+    serializer_class = AuthorBalanceCreateSerializer
+    serializer_class_map = {
+        'list': AuthorBalanceSerializer,
+    }
     permission_classes = (IsAdmin,)
-    filter_fields = ('status', 'type')
+    filter_fields = ('author', 'status', 'type')
     search_fields = (
         'author__email',
         'author__first_name',
diff --git a/apps/payment/models.py b/apps/payment/models.py
index e25fb6ab..dc8426dd 100644
--- a/apps/payment/models.py
+++ b/apps/payment/models.py
@@ -34,7 +34,7 @@ class AuthorBalance(models.Model):
     commission = models.DecimalField('Комиссия', max_digits=8, decimal_places=2, default=0)
     status = models.PositiveSmallIntegerField('Статус', choices=STATUS_CHOICES, default=0)
     payment = models.OneToOneField('Payment', on_delete=models.CASCADE, null=True, blank=True, verbose_name='Платёж')
-    cause = models.TextField('Причина отказа', default='')
+    cause = models.TextField('Причина отказа', null=True, blank=True)
 
     class Meta:
         verbose_name = 'Баланс'