Cash Back could be one of the component of fidelity programs. Cash back is a discount that is paid back after having bought something: we pay the supplier the total price and, after few days, the supplier gives us back some money. We can use the total earned cash back, money or points that could be converted in money, to buy something else from the same supplier or, for fidelity programs with more than one suppliers, to buy something from one of the other suppliers that run the fidelity program. Rarely you can have your cash back accredited as money in your bank account. Fidelity programs based on cash back, or pay back, pay customers different percentages that vary depending on merchants and on the product category, from 1-3% to a 20-30%. The best advantages come from the fidelity programs that allow customer to stack the cash back, coupons, special offers, free delivery offers and that offer customers many products/services with cash back to buy.