Earning money with cash back credit cards involves using credit cards that offer a percentage of your purchases back as cash rewards. These cards provide incentives for everyday spending, such as groceries, gas, dining, and online shopping. Cardholders can accumulate cash back, which can be redeemed as statement credits, checks, or deposits into bank accounts. To maximize benefits, choose cards with the highest cash back rates in categories you frequently spend on, pay off balances monthly to avoid interest charges, and take advantage of any sign-up bonuses or special promotions. Properly managing these cards can lead to significant savings and additional income.