diff --git a/kfet/forms.py b/kfet/forms.py
index 2a7f111a..b6fad26f 100644
--- a/kfet/forms.py
+++ b/kfet/forms.py
@@ -236,7 +236,7 @@ class CheckoutStatementUpdateForm(forms.ModelForm):
 class CategoryForm(forms.ModelForm):
     class Meta:
         model = ArticleCategory
-        fields = ["name", "has_addcost"]
+        fields = ["name", "has_addcost", "has_reduction"]
 
 
 # -----
diff --git a/kfet/templates/kfet/category.html b/kfet/templates/kfet/category.html
index 0a8b58be..5692725c 100644
--- a/kfet/templates/kfet/category.html
+++ b/kfet/templates/kfet/category.html
@@ -26,6 +26,7 @@
         <td>Nom</td>
         <td class="text-right">Nombre d'articles</td>
         <td class="text-right" data-sorter="yesno">Peut être majorée</td>
+        <td class="text-right" data-sorter="yesno">Réduction COF appliquée</td>
       </tr>
     </thead>
     <tbody>
@@ -38,6 +39,7 @@
         </td>
         <td class="text-right">{{ category.articles.all|length }}</td>
         <td class="text-right">{{ category.has_addcost | yesno:"Oui,Non"}}</td>
+        <td class="text-right">{{ category.has_reduction | yesno:"Oui,Non"}}</td>
       </tr>
       {% endfor %}
     </tbody>
diff --git a/kfet/views.py b/kfet/views.py
index c5d5082b..7ae1de82 100644
--- a/kfet/views.py
+++ b/kfet/views.py
@@ -1056,7 +1056,10 @@ def kpsul_perform_operations(request):
                 to_addcost_for_balance += operation.addcost_amount
             if operationgroup.on_acc.is_cash:
                 to_checkout_balance += -operation.amount
-            if operationgroup.on_acc.is_cof:
+            if (
+                operationgroup.on_acc.is_cof
+                and operation.article.category.has_reduction
+            ):
                 if is_addcost and operation.article.category.has_addcost:
                     operation.addcost_amount /= cof_grant_divisor
                 operation.amount = operation.amount / cof_grant_divisor