diff --git a/addons/l10n_be_hr_payroll/models/l10n_be_hr_payroll.py b/addons/l10n_be_hr_payroll/models/l10n_be_hr_payroll.py
index 909ba1e544a..0d3376fcbb8 100644
--- a/addons/l10n_be_hr_payroll/models/l10n_be_hr_payroll.py
+++ b/addons/l10n_be_hr_payroll/models/l10n_be_hr_payroll.py
@@ -116,8 +116,8 @@ class HrContract(models.Model):
     @api.depends('commission_on_target')
     def _compute_warrants_cost(self):
         for contract in self:
-            contract.warrants_cost = contract.commission_on_target * 1.326 / 1.05 * 12.0
-            contract.warrant_value_employee = contract.warrants_cost * 0.54
+            contract.warrants_cost = contract.commission_on_target * 1.05 * 12.0
+            contract.warrant_value_employee = contract.commission_on_target * (1.00 - 0.535) * 12.0
 
     @api.depends('wage', 'fuel_card', 'representation_fees', 'transport_employer_cost',
         'internet', 'mobile', 'mobile_plus')