# You can create a coupon for a customer that will apply to all the subscriptions invoices and set duration_in_months to 12
# https://stripe.com/docs/api/coupons/create#create_coupon-duration Stripe API reference – Create a coupon – curl Complete reference documentation for the Stripe API. Includes code snippets and examples for our Python, Java, PHP, Node.js, Go, Ruby, and .NET libraries.