The classic model is post-purchase and affiliate-driven. Cashback portals and card-linked programs send shoppers to a merchant, earn an affiliate commission when the sale tracks, and share a slice of that commission with the shopper. The reward is contingent on the purchase completing: refunds, cancellations, and return windows mean payouts are usually confirmed days or weeks after checkout.
Cashback versus discounts. A discount lowers the listed price for everyone; cashback keeps the price intact and returns money selectively to enrolled customers afterward. That protects price integrity across channels, makes the incentive feel like earned income rather than a markdown, and creates a reason to come back — the balance lives inside the program.
Where the model is heading. Because traditional cashback only fires after a sale, it rewards buyers a brand has already won. Newer variants move the trigger earlier: social cashback pays small amounts for pre-sale actions such as following an account or opting in to a messaging channel, turning cashback from a conversion rebate into an acquisition tool.
Why it matters for brands
Cashback is one of the few incentives that is pure performance spend: money leaves the budget only when the desired action verifiably happens. Structured well, it acquires customers at a known cost per action and builds a first-party relationship a coupon code never captures.