Generally, coupons and other discounts (such as Groupon) only apply to our upfront payment prices. However, sometimes we have time-limited specials where these coupons that are also applicable to our Affirm loans. Like right now! :-) So if you're thinking of using a payment plan - take advantage of our current 'intro offer'. Any coupon that works for full payments, currently works for Affirm. Yeah! :-D