Cashback is a percentage of what you spend that the card issuer pays back to you

When you use a cashback credit card, the card issuer returns a small percentage of each purchase to your account. That money comes from the merchant fees the store pays when you swipe your card — typically 2 to 3 percent of the transaction. The card issuer takes a cut of that fee and gives some of it back to you as cashback. The percentage you receive varies by card: some offer a flat 1 or 2 percent on all purchases, while others offer higher rates (3, 4, or 5 percent) on specific categories like groceries, gas, or restaurants.

The cashback accumulates in your account as a credit or balance. You can usually redeem it as a statement credit (which reduces your bill), a deposit to a linked bank account, or sometimes as a gift card or merchandise. Some cards let you redeem as little as $1 or $5, while others require a minimum like $25 before you can cash out. The money is yours to keep — you do not have to spend it on anything specific.

Key Takeaways

  • Cashback is a percentage of your purchase amount that the card issuer returns to you, funded by merchant fees rather than out of the issuer's pocket.
  • Flat-rate cards offer the same percentage on all purchases, while category cards offer higher rates on specific spending like groceries or gas and lower rates elsewhere.
  • You accumulate cashback in your account and can redeem it as a statement credit, bank transfer, or other rewards, usually with a minimum redemption amount.
  • Cashback only benefits you if you pay off your balance in full each month; interest charges on carried balances will erase the value of the reward.
  • The card issuer sets the cashback rate and can change it, so the percentage you earn today may not be the same next year.

Flat-rate cards versus category cards

Flat-rate cards return the same percentage on every purchase. A card offering 2 percent cashback gives you 2 percent whether you buy gas, groceries, or a plane ticket. These cards are straightforward: you do not have to track which categories earn more, and you earn the same reward no matter where you shop. The trade-off is that the percentage is usually lower than what category cards offer on their bonus categories.

Category cards offer different rates depending on what you buy. A common structure is 5 percent on groceries, 3 percent on gas, 1 percent on everything else. Some cards rotate their bonus categories quarterly — for example, 5 percent on restaurants one quarter, then 5 percent on travel the next. To earn the higher rate, you must use the card in the right category; using it elsewhere earns only the base rate, which is often 1 percent. Category cards reward you more if your spending matches their categories, but they require you to remember which card to use for which purchase.

The card issuer decides the rates and can change them. A card that offered 5 percent on groceries may drop to 3 percent next year, or the issuer may add an annual cap (for example, 5 percent only on the first $1,500 spent in that category per year). Read the terms when you open the card and check them periodically.

How the money reaches your account

Cashback accumulates as you spend. If you charge $100 to a card with 2 percent cashback, you earn $2. That $2 sits in your rewards account and is not automatically deducted from your bill. You must redeem it to use it.

Redemption methods vary by card. Most cards let you redeem as a statement credit, which reduces your next bill by the amount you redeem. Some cards offer a direct bank transfer, sending the money to a checking or savings account you link to the card. Others let you buy gift cards, merchandise, or travel through the card issuer's rewards portal, though these options sometimes offer worse value than a statement credit (for example, $100 in cashback might buy only $90 in gift cards).

Many cards set a minimum redemption amount — often $5 or $25 — so you cannot cash out $1 at a time. If your balance is below the minimum, you wait until you accumulate more. Some cards let you redeem any amount down to $1, which is more flexible. Check your card's terms to see what minimums apply and which redemption methods are available.

When cashback saves you money and when it does not

Cashback only saves you money if you pay your full balance each month. If you carry a balance, the card issuer charges interest — typically 18 to 25 percent annually. That interest quickly erases the value of cashback. For example, if you earn $100 in cashback but carry a $1,000 balance at 20 percent interest, you will pay roughly $200 in interest charges that year. You are down $100 overall.

Cashback also does not offset an annual fee. Some premium cards charge $95 or more per year and offer higher cashback rates to justify the cost. You need to earn enough cashback to cover the fee and still come out ahead. A $95 annual fee requires you to earn at least $95 in cashback to break even. If you spend $5,000 per year on a card with 2 percent cashback, you earn $100 — enough to cover a $95 fee. If you spend less, the fee costs you money.

Cashback also does not change the price you pay at checkout. It is a rebate that arrives later, not a discount applied at the register. If you overspend because you think the cashback will offset it, you lose money overall.

How card issuers profit from cashback programs

Card issuers can afford to pay cashback because merchants pay them a fee every time you swipe. That fee is typically 2 to 3 percent of the transaction amount. The issuer keeps most of it and returns a portion to you as cashback. For example, if you spend $100 and the merchant pays a 2.5 percent fee ($2.50), the issuer might return 1 percent ($1) to you and keep the rest.

The issuer also profits from interest charges on balances you carry and from annual fees. Some cardholders never redeem their cashback or let it expire, which is pure profit for the issuer. The issuer also benefits from increased spending: people with cashback cards often spend more than they would with a debit card or cash, because the reward feels like a gain even though they are paying full price.

Cashback caps and expiration dates

Some cards cap the cashback you can earn in a category per year. For example, a card might offer 5 percent on groceries but only on the first $1,500 spent per year. After you hit $1,500, cashback on groceries drops to 1 percent for the rest of the year. These caps are common on high-reward-rate cards and are designed to limit the issuer's costs. Check your card's terms to see if caps apply.

Cashback expiration is rare but possible. Most major card issuers do not expire cashback, but some smaller issuers or store cards may. Read your card's terms to see whether cashback expires if you do not redeem it within a certain time frame. If expiration is a concern, redeem your balance regularly rather than letting it accumulate.

Comparing cashback to other rewards

Cashback is not the only reward structure. Some cards offer points or miles instead. Points are similar to cashback but are usually redeemed for travel, merchandise, or gift cards rather than cash. Miles are earned on travel cards and are redeemed for flights or hotel stays. The value of points and miles depends on how you use them — a point might be worth 1 cent when redeemed for merchandise but 1.5 cents when redeemed for travel, so the card's value varies by your redemption choice.

Cashback is straightforward: 1 percent cashback is always worth 1 cent per dollar spent, regardless of how you redeem it. Points and miles require you to understand the redemption value to know whether you are getting a good deal. For that reason, cashback cards are simpler if you want a predictable reward and do not want to track redemption rates.

Frequently Asked Questions

Can I earn cashback on credit card payments?

No. Paying your credit card bill with another credit card does not earn cashback on the payment itself. Most card issuers treat balance transfers and payments as non-purchase transactions and exclude them from rewards. Some issuers charge a fee (usually 3 percent) for paying with another card, so you would lose money.

What happens to cashback if I close the card?

You keep the cashback you have already earned. When you close the card, any unredeemed balance remains in your account and you can redeem it. However, you cannot earn new cashback after the account closes. If you have a small balance, redeem it before closing the card to make sure you do not forget about it.

Do I have to use the cashback for anything specific?

No. When you redeem cashback as a statement credit, it simply reduces your bill — you can use it for any purchase or to pay down your balance. You are not required to spend it on groceries, gas, or anything else. The only restriction is if you redeem for a gift card or merchandise, which limits you to that specific option.

Is cashback taxable income?

Generally, no. The IRS treats cashback as a rebate on your purchase, not as income. You do not report it on your tax return. However, if you earn cashback through a sign-up bonus or other promotional offer, the issuer may send you a tax form (1099-INT or similar) if the amount is large enough. Check with a tax professional if you are unsure.

Can I earn cashback on a debit card?

Some debit cards offer cashback, but the rates are usually much lower than credit cards — often 0.5 percent or less. Debit card cashback is less common because debit transactions do not generate the same merchant fees that credit transactions do. If cashback is important to you, a credit card will earn significantly more.