diff --git a/apps/member/migrations/0015_alter_profile_promotion.py b/apps/member/migrations/0015_alter_profile_promotion.py
new file mode 100644
index 00000000..f838c563
--- /dev/null
+++ b/apps/member/migrations/0015_alter_profile_promotion.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.2.4 on 2025-08-02 13:43
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('member', '0014_create_bda'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='profile',
+            name='promotion',
+            field=models.PositiveSmallIntegerField(default=2025, help_text='Year of entry to the school (None if not ENS student)', null=True, verbose_name='promotion'),
+        ),
+    ]
diff --git a/apps/treasury/models.py b/apps/treasury/models.py
index 214203a9..48709801 100644
--- a/apps/treasury/models.py
+++ b/apps/treasury/models.py
@@ -353,13 +353,11 @@ class SogeCredit(models.Model):
     def amount(self):
         if self.valid:
             return self.credit_transaction.total
-        amount = sum(max(transaction.total - 2000, 0) for transaction in self.transactions.all())
-        if 'wei' in settings.INSTALLED_APPS:
-            from wei.models import WEIMembership
-            if not WEIMembership.objects\
-                    .filter(club__weiclub__year=self.credit_transaction.created_at.year, user=self.user).exists():
-                # 80 € for people that don't go to WEI
-                amount += 8000
+        amount = 0
+        transactions_wei = self.transactions.filter(membership__club__weiclub__isnull=False)
+        amount += sum(max(transaction.total - transaction.membership.club.weiclub.fee_soge_credit, 0) for transaction in transactions_wei)
+        transactions_not_wei = self.transactions.filter(membership__club__weiclub__isnull=True)
+        amount += sum(transaction.total for transaction in transactions_not_wei)
         return amount
 
     def update_transactions(self):
@@ -441,7 +439,7 @@ class SogeCredit(models.Model):
         With Great Power Comes Great Responsibility...
         """
 
-        total_fee = sum(max(transaction.total - 2000, 0) for transaction in self.transactions.all() if not transaction.valid)
+        total_fee = self.amount
         if self.user.note.balance < total_fee:
             raise ValidationError(_("This user doesn't have enough money to pay the memberships with its note. "
                                     "Please ask her/him to credit the note before invalidating this credit."))
diff --git a/apps/wei/migrations/0017_alter_weiclub_fee_soge_credit.py b/apps/wei/migrations/0017_alter_weiclub_fee_soge_credit.py
new file mode 100644
index 00000000..c78ffdd4
--- /dev/null
+++ b/apps/wei/migrations/0017_alter_weiclub_fee_soge_credit.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.2.4 on 2025-08-02 13:43
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('wei', '0016_weiregistration_fee_alter_weiclub_fee_soge_credit'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='weiclub',
+            name='fee_soge_credit',
+            field=models.PositiveIntegerField(default=0, verbose_name='membership fee (soge credit)'),
+        ),
+    ]
diff --git a/apps/wei/models.py b/apps/wei/models.py
index 18ba8a58..2c0653c7 100644
--- a/apps/wei/models.py
+++ b/apps/wei/models.py
@@ -40,7 +40,7 @@ class WEIClub(Club):
 
     fee_soge_credit = models.PositiveIntegerField(
         verbose_name=_("membership fee (soge credit)"),
-        default=2000,
+        default=0,
     )
 
     class Meta:
diff --git a/apps/wei/views.py b/apps/wei/views.py
index e3355345..d180d3d9 100644
--- a/apps/wei/views.py
+++ b/apps/wei/views.py
@@ -798,11 +798,6 @@ class WEIUpdateRegistrationView(ProtectQuerysetMixin, LoginRequiredMixin, Update
             choose_bus_form.fields["team"].queryset = BusTeam.objects.filter(bus__wei=context["club"])
             context["membership_form"] = choose_bus_form
 
-        if not self.object.soge_credit and self.object.user.profile.soge:
-            form = context["form"]
-            form.fields["soge_credit"].disabled = True
-            form.fields["soge_credit"].help_text = _("You already opened an account in the Société générale.")
-
         return context
 
     def get_form(self, form_class=None):
@@ -823,6 +818,10 @@ class WEIUpdateRegistrationView(ProtectQuerysetMixin, LoginRequiredMixin, Update
                 form.fields["deposit_type"].required = True
                 form.fields["deposit_type"].help_text = _("Choose how you want to pay the deposit")
 
+        if self.object.user.profile.soge:
+            form.fields["soge_credit"].disabled = True
+            form.fields["soge_credit"].help_text = _("You already opened an account in the Société générale.")
+
         return form
 
     def get_membership_form(self, data=None, instance=None):