How the Coupon Profit Calculator works
Amazon coupons have two costs: the discount itself and a fee Amazon charges every time a coupon is clipped and redeemed. The referral fee is charged on the discounted price, which claws back a little.
The key output is the sales lift you need for total profit to stay level. If a 10% coupon cuts per-unit profit by 30%, you need about 43% more units just to break even on the promotion.
Formula
- Price after coupon = Price − Discount (percent × price, or fixed amount)
- Profit with coupon = Price after coupon − Product cost − Shipping − Referral(on discounted price) − FBA − Storage − Ads − Returns − Redemption fee
- Lift needed = Profit without ÷ Profit with − 1
- Max coupon = Price − Break-even price (including the redemption fee)
Example
A 10% coupon on a $29.99 item costs about $3.10 profit per unit, needing roughly a 35% lift to stay level; a 40% expected lift just covers it.
Frequently asked questions
How much is Amazon's coupon fee?
The US fee has been $0.60 per redemption; the field is editable so you can match the current rate in Seller Central.
Is the referral fee charged on the full price?
No, on the price the customer actually pays after the coupon, which is why the calculator recomputes it.
Do coupons help ranking?
They usually raise conversion, and higher conversion helps organic rank. That is the main reason to accept a temporary profit cut.