diff --git a/cotisations/forms.py b/cotisations/forms.py
index 5ada2fa0..01e52756 100644
--- a/cotisations/forms.py
+++ b/cotisations/forms.py
@@ -233,7 +233,7 @@ class RechargeForm(FormRevMixin, Form):
     """
     Form used to refill a user's balance
     """
-    value = forms.FloatField(
+    value = forms.DecimalField(
         label=_("Amount"),
         min_value=0.01,
         validators=[]
diff --git a/cotisations/models.py b/cotisations/models.py
index e05330bc..ed98094d 100644
--- a/cotisations/models.py
+++ b/cotisations/models.py
@@ -83,7 +83,7 @@ class BaseInvoice(RevMixin, AclMixin, FieldPermissionModelMixin, models.Model):
         ).aggregate(
             total=models.Sum(
                 models.F('prix')*models.F('number'),
-                output_field=models.FloatField()
+                output_field=models.DecimalField()
             )
         )['total'] or 0
 
diff --git a/cotisations/payment_methods/balance/models.py b/cotisations/payment_methods/balance/models.py
index b4c82556..221cca3e 100644
--- a/cotisations/payment_methods/balance/models.py
+++ b/cotisations/payment_methods/balance/models.py
@@ -73,7 +73,7 @@ class BalancePayment(PaymentMethodMixin, models.Model):
         """
         user = invoice.user
         total_price = invoice.prix_total()
-        if float(user.solde) - float(total_price) < self.minimum_balance:
+        if user.solde - total_price < self.minimum_balance:
             messages.error(
                 request,
                 _("Your balance is too low for this operation.")
@@ -106,7 +106,7 @@ class BalancePayment(PaymentMethodMixin, models.Model):
         balance.
         """
         return (
-            float(user.solde) - float(price) >= self.minimum_balance,
+            user.solde - price >= self.minimum_balance,
             _("Your balance is too low for this operation.")
         )