In Template builder, you can configure your payment form to allow end user to redeem coupon or promotion code when submitting the payment form.

• Create a new template. Check how to create a new form template .
• Make sure you have setup coupon or promotion code in Stripe dashboard.
• On Template builder, configure your discount options as below:
  • Click on edit (pencil) icon right beside Discount code button field and make sure Visible is checked.
  • Then pick one option for Discount Type.
  • NOTE: Make sure you also set Recuring Frequency. Discounts only work with recurring subscriptions.
• Now, hit save and publish.
• Your template is ready to be used with discounts.