Loyalty glossary · 1. Program mechanics and currency (40)
Cash Back
Cash back is a loyalty reward that returns a set percentage of purchase value to the member, usually as statement credit, bank transfer, or a balance redeemable against future spending. The rate is the headline figure, and the redemption path determines its real worth.
Cash back is a discount, not income. The rate looks like a yield, but the accrual rules decide what spend actually earns. A member who trusts the advertised number without reading the category exclusions has already lost the negotiation.
Work the arithmetic on a full year of normal spend. A card that pays 2 per cent cash back on 20,000 dollars of annual purchases returns 400 dollars to the member, before any annual fee. A competing card that pays 1.5 per cent on the same 20,000 dollars returns 300 dollars. The 0.5 per cent gap is worth 100 dollars over 12 months, and that is the entire decision unless the lower rate card has a better redemption path. The headline rate is the only number most members compare, and the operator knows it.
The rate only applies to eligible spend, and eligibility is where the programme changes the deal. Grocery purchases might earn at the headline rate, while utility payments earn nothing. Some schemes require a minimum number of monthly transactions before any cash back accrues at all. Accrual is the quiet rule that turns a high advertised rate into a much lower effective yield for anyone who does not game the categories.
Cash back is not paid by the issuer out of goodwill. It is funded by interchange fees and merchant acceptance costs, and a co-brand card pushes the rate higher because the retailer shares that cost to buy loyalty. The member sees a higher cash back number and misses the annual fee or the higher interest rate on carried balances that pays for it.
Even cash back has breakage built in. If the reward sits in a points balance with a minimum redemption threshold, a member who never reaches the threshold forfeits the value without noticing. That unclaimed balance is breakage, and it lowers the programme's true cost below the advertised rate. The member who chooses a cash back card for the rate but never redeems is the most profitable customer the issuer has.