# Stripe Coupons At checkout, customers have the option to "Add Promotional Code" if they have one. A Promo Code is the actual text code they'll enter that triggers a specific discount, which you've predetermined by building corresponding Stripe Coupons in the background. Give discounts by percentage or finite amount, set duration/expiration, create one-time or re-useable codes, & more. Stripe Coupons and Promo Codes are a great way to step up your marketing & advertising game. * Make sure to **Enable Promo Codes** in BDP once you've created a Stripe Coupon {% @supademo/embed demoId="Z8DiR6M9Q1zEFEYpBthY5" url="" %} ### Applying a Promo Code via URL Parameter Stripe Promo Codes can always be applied to the Checkout Page. They can also be applied via a URL parameter that can be attached to a button, QR Code, or link that can be shared. **The syntax for creating a promo code URL is:** https\://**`yoursubdomain`**.bulkdelivery.app/product/**`product-name`**?promo=**`STRIPECODE`** "yoursubdomain" = Your BDP Subdomain\ "product-name" = Product Slug\ "STRIPECODE" = Promo code, created at Stripe Following a link with a promo code will connect that code to the customer's cart as they continue placing their order. The appropriate discount will be applied on the Checkout screen assuming that what is purchased meets the criteria of the promo code. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.bulkdelivery.pro/settings/payment-tax-and-disclaimers/stripe-coupons.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.