diff --git a/accountant/models/accounts.py b/accountant/models/accounts.py
index 2db5157..3f63fa5 100644
--- a/accountant/models/accounts.py
+++ b/accountant/models/accounts.py
@@ -53,22 +53,20 @@ class Account(db.Model):
             Operation.account_id == self.id
         ).one()
 
-    def flow(self, begin, end):
-        """Return the flow for a specific time period."""
+    def income(self, begin, end):
+        """Return the income for a specific time period."""
         query = db.session.query(
             db.func.sum(
-                db.case(
-                    [(db.func.sign(Operation.value) == -1, Operation.value)],
-                    else_=0
-                )
+                Operation.value
+            ).filter(
+                db.func.sign(Operation.value) == -1
             ).label("expenses"),
             db.func.sum(
-                db.case(
-                    [(db.func.sign(Operation.value) == 1, Operation.value)],
-                    else_=0
-                )
+                Operation.value
+            ).filter(
+                db.func.sign(Operation.value) == 1
             ).label("revenues"),
-            db.func.sum(Operation.value).label("balance")
+            db.func.sum(Operation.value).label("income")
         ).filter(
             Operation.account_id == self.id,
         )
diff --git a/accountant/views/accounts.py b/accountant/views/accounts.py
index b9cab8e..83e5ba8 100644
--- a/accountant/views/accounts.py
+++ b/accountant/views/accounts.py
@@ -65,7 +65,10 @@ category_model = ns.model('Category', {
         description='Total amount of expenses for the category'),
     'revenues': fields.Float(
         readonly=True,
-        description='Total amount of revenues for the category')
+        description='Total amount of revenues for the category'),
+    'income': fields.Float(
+        readonly=True,
+        description='Total income for the category')
 })
 
 # OHLC model.
@@ -238,24 +241,25 @@ class AccountResource(Resource):
         return None, 204
 
 
-@ns.route('/<int:account_id>/solds')
+@ns.route('/<int:account_id>/balances')
 @ns.doc(
     security='apikey',
     params={
         'account_id': 'Id of the account to manage'
     },
     responses={
-        200: ('OK', solds_model),
+        200: ('OK', balances_model),
         401: 'Unauthorized',
         404: 'Account not found'
     })
-class SoldsResource(Resource):
-    """Resource to expose solds."""
+class BalancesResource(Resource):
+    """Resource to expose current, pointed and future balances."""
 
-    @ns.marshal_with(solds_model)
+    @ns.marshal_with(balances_model)
     @jwt_required
     def get(self, account_id):
-        """Get solds for a specific account and date range."""
+        """Get current, pointed and future balances for a specific account and
+        date range."""
 
         account = Account.query().get(account_id)
 
@@ -296,7 +300,7 @@ class BalanceResource(Resource):
 
         # Note: if we don't pass the code, the result is seen as a tuple and
         # causes error on marshalling.
-        return account.flow(**data), 200
+        return account.income(**data), 200
 
 
 @ns.route("/<int:account_id>/category")