Discover Cashback is a rewards program offered by Discover Financial Services that allows cardholders to earn cash back on their purchases. Users can earn a percentage of their spending back, typically ranging from 1% to 5%, depending on the category of the purchase. Categories may include groceries, gas, and dining, which often rotate quarterly. To maximize rewards, cardholders can activate specific categories each quarter to earn higher cash back rates. The cash back earned can be redeemed in various ways, including statement credits, direct deposits, or gift cards, making it a flexible option for consumers looking to save money.