diff --git a/addons/pos_discount/static/src/js/DiscountButton.js b/addons/pos_discount/static/src/js/DiscountButton.js
index 4b3ce7e3be9..531aef87e42 100644
--- a/addons/pos_discount/static/src/js/DiscountButton.js
+++ b/addons/pos_discount/static/src/js/DiscountButton.js
@@ -56,7 +56,7 @@ export class DiscountButton extends Component {
                 .filter((id) => id !== "")
                 .map((id) => Number(id));
 
-            const baseToDiscount = order.calculate_base_amount(tax_ids_array, lines);
+            const baseToDiscount = order.calculate_base_amount(tax_ids_array, lines.filter((line) => !this.env.pos.config.tip_product_id || line.product.id !== this.env.pos.config.tip_product_id[0]));
 
             // We add the price as manually set to avoid recomputation when changing customer.
             const discount = (-pc / 100.0) * baseToDiscount;