# Promo on DOKU Checkout Page

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Applying a promo code during checkout allows customers to save on their purchases. Here's a **step-by-step guide** on how your customers can apply a promo code to their payment :

1. #### Setting up a Promo

   Before applying a promo code, it first needs to be set up and configured. If you haven't done this yet, please refer to our guide on how to set up a promo [here](https://docs.doku.com/enhancements/promo-engine/set-up-a-promo).
2. **View Promo List**

   To view the available promos, click on the **"See Promo"** button that is seen on the checkout page.
3. **Apply Promo**

   To apply promo to checkout orders, customer must click "apply". The discount amount will be shown. Customers can proceed with the payment by entering their payment credentials, such as a credit card number or any other relevant information required for their chosen payment method.
4. **Complete the Payment**

   Customer can finalize the payment and enjoy promo!!