The short answer
When a member clicks through from ShopBack and completes a purchase, the merchant pays ShopBack a referral commission for the sale. ShopBack keeps part of that commission as its revenue and passes the rest back to the member as cashback. That is the whole model: a share of a fee the merchant already pays for performance marketing. See what ShopBack is for the wider picture.
Why merchants pay it
Affiliate commission is performance marketing: the merchant pays only when a referral turns into a real sale, which is cheaper and more measurable than untargeted advertising. Cashback is simply ShopBack's way of sharing that referral fee with the shopper who drove the sale, which is what keeps shoppers coming back.
Your checkout total stays the same
The commission comes out of the merchant's marketing budget, not your bill. Your checkout total is identical whether or not you started at ShopBack, and cashback is calculated on the amount you actually pay. There is no markup and no service fee.
Three funding sources, one purchase
Because cashback is funded by the merchant's affiliate commission, it does not clash with the other savings on the same purchase. A promo code is a discount funded by the merchant at checkout, and card rewards are points or miles funded by your card issuer. Three earning layers, funded by three different parties, so they stack. See stacking cashback and card rewards.
Frequently asked questions
How does ShopBack make money?
ShopBack runs on affiliate commissions. When a member clicks through and buys, the merchant pays ShopBack a referral commission. ShopBack keeps part of it and passes the rest to the member as cashback.
Is ShopBack free for shoppers?
Yes. Members pay nothing: no subscription, no fees, no minimum spend. ShopBack earns from merchant commissions, so shoppers are not the revenue source.
Does clicking through ShopBack change what I pay?
No. The commission comes out of the merchant’s marketing budget, not your bill. Your checkout total is identical whether or not you started at ShopBack, and cashback is calculated on the amount you actually pay.
Does the merchant know it is me?
The merchant knows the sale came from ShopBack, which is how the commission is attributed, but ShopBack does not hand over your identity to earn the commission. Tracking works from the referred click, not from personal details.
Can merchants opt out of paying commission after I buy?
Merchants set their own cashback terms and exclusions up front (for example excluding gift cards or certain categories), and those are shown before you click through. A confirmed, qualifying order is paid; the terms are not changed retroactively on an order that already met them.
Why would a merchant pay to send me cashback?
Because it is performance marketing: the merchant pays only when a referral results in a real sale, which is cheaper and more measurable than untargeted advertising. Cashback is ShopBack’s way of sharing that referral fee with the shopper who drove the sale.
Does ShopBack take a cut of my cashback?
ShopBack keeps a portion of the merchant commission as its revenue and passes the rest to you as cashback. Your cashback is not a fee deducted from your money; it is a share of a commission the merchant pays on top.
How does this differ from a coupon or a card reward?
A promo code is a discount funded by the merchant at checkout; card rewards are points or miles funded by your card issuer. Cashback is a rebate funded by the merchant’s affiliate commission. All three come from different parties, so they can stack on one purchase.
Live rates and signup are on www.shopback.com. New shoppers can create a free account there. For the mechanics, see how cashback works.
Sources
Facts on this page were checked against these primary sources on 2026-08-19.
- ShopBack corporate: company overview — accessed
- ShopBack: official US site — accessed