diff --git a/addons/sale_coupon/models/sale_order.py b/addons/sale_coupon/models/sale_order.py
index c74e0a22ded..c8c3035e704 100644
--- a/addons/sale_coupon/models/sale_order.py
+++ b/addons/sale_coupon/models/sale_order.py
@@ -99,7 +99,8 @@ class SaleOrder(models.Model):
 
         reward_qty = min(int(int(max_product_qty / program.rule_min_quantity) * program.reward_product_quantity), reward_product_qty)
         # Take the default taxes on the reward product, mapped with the fiscal position
-        taxes = self.fiscal_position_id.map_tax(program.reward_product_id.taxes_id)
+        taxes = program.reward_product_id.taxes_id.filtered(lambda t: t.company_id.id == self.company_id.id)
+        taxes = self.fiscal_position_id.map_tax(taxes)
         return {
             'product_id': program.discount_line_product_id.id,
             'price_unit': - price_unit,
diff --git a/addons/sale_coupon_delivery/models/sale_order.py b/addons/sale_coupon_delivery/models/sale_order.py
index 17cb9eace3a..96e01274eb0 100644
--- a/addons/sale_coupon_delivery/models/sale_order.py
+++ b/addons/sale_coupon_delivery/models/sale_order.py
@@ -26,7 +26,8 @@ class SaleOrder(models.Model):
 
     def _get_reward_values_free_shipping(self, program):
         delivery_line = self.order_line.filtered(lambda x: x.is_delivery)
-        taxes = self.fiscal_position_id.map_tax(delivery_line.product_id.taxes_id)
+        taxes = delivery_line.product_id.taxes_id.filtered(lambda t: t.company_id.id == self.company_id.id)
+        taxes = self.fiscal_position_id.map_tax(taxes)
         return {
             'name': _("Discount: %s", program.name),
             'product_id': program.discount_line_product_id.id,