diff --git a/weboob/capabilities/base.py b/weboob/capabilities/base.py
index bae5699e5c4c089dd800b775428bac8f8088126c..26277bf1f85d878d9b96407518bed731b625366e 100644
--- a/weboob/capabilities/base.py
+++ b/weboob/capabilities/base.py
@@ -679,3 +679,7 @@ def currency2txt(klass, currency):
 
 def capability_to_string(capability_klass):
     return re.match(r'^Cap(\w+)', capability_klass.__name__).group(1).lower()
+
+
+class DeprecatedFieldWarning(UserWarning):
+    pass
diff --git a/weboob/capabilities/bill.py b/weboob/capabilities/bill.py
index b87f88b2f5f4a4614a0bcd234549514d8e13db62..fae53edac261cd42065d7388407e1b139eb51eeb 100644
--- a/weboob/capabilities/bill.py
+++ b/weboob/capabilities/bill.py
@@ -17,10 +17,11 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with weboob. If not, see <http://www.gnu.org/licenses/>.
 
+import warnings
 
 from .base import (
     BaseObject, StringField, DecimalField, BoolField, UserError, Currency, Field,
-    empty,
+    empty, DeprecatedFieldWarning,
 )
 from .date import DateField
 from .collection import CapCollection
@@ -124,12 +125,21 @@ def __repr__(self):
     # compatibility properties
     @property
     def price(self):
+        warnings.warn(
+            'Field "price" is deprecated, use "total_amount" field instead.',
+            DeprecatedFieldWarning, stacklevel=3,
+        )
+
         if empty(self.total_price):
             return self.total_price
         return abs(self.total_price)
 
     @price.setter
     def price(self, value):
+        warnings.warn(
+            'Field "price" is deprecated, use "total_amount" field instead.',
+            DeprecatedFieldWarning, stacklevel=3,
+        )
         if empty(value):
             self.total_price = value
             self._income = None
@@ -144,12 +154,22 @@ def price(self, value):
 
     @property
     def income(self):
+        warnings.warn(
+            'Field "income" is deprecated, use "total_amount" field instead.',
+            DeprecatedFieldWarning, stacklevel=3,
+        )
+
         if empty(self.total_price):
             return self._income or False
         return self.total_price <= 0
 
     @income.setter
     def income(self, value):
+        warnings.warn(
+            'Field "income" is deprecated, use "total_amount" field instead.',
+            DeprecatedFieldWarning, stacklevel=3,
+        )
+
         if empty(self.total_price):
             self._income = value
         else: