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 you make. That money goes into your account — either as a statement credit, a deposit to your bank account, or points you can redeem. The percentage varies by card: some offer a flat rate like 1.5% on everything, while others offer higher rates (often 3% to 5%) on specific categories like groceries, gas, or restaurants, and a lower rate on everything else.
The cashback comes from the merchant fee the store pays to the card issuer when you swipe. The issuer shares a portion of that fee with you as an incentive to use their card instead of cash or a competitor's card. You do not pay anything extra — the store's price stays the same whether you use cashback or not.
Key Takeaways
- Cashback is a percentage of your purchase amount returned to you by the card issuer, funded by the merchant fee the store pays.
- 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 only earn cashback on purchases you actually make — carrying a balance or paying interest erases the benefit and costs you far more than you gain back.
- Cashback appears as a statement credit, bank deposit, or redeemable points depending on the card, and most cards set a minimum before you can redeem.
- Annual fees on some cashback cards can exceed the cashback you earn in a year, so compare the fee against your expected spending before opening the account.
How cashback actually reaches your account
The mechanics depend on the card. Some cards automatically credit your statement each month — you see a line item showing "$12.50 cashback earned" and your balance goes down by that amount. Others deposit the cashback directly into your linked bank account, usually monthly or quarterly. A third type converts cashback into points or miles that sit in a rewards account until you redeem them for a statement credit, merchandise, or travel.
Most cards set a minimum before you can redeem — often $25 or $50 — so if you spend very little, your cashback may accumulate for several months before you can cash it out. Some cards waive the minimum and let you redeem any amount, but this is less common. Check your card's terms to see when and how often cashback posts and what the redemption rules are.
Flat-rate versus category cashback cards
A flat-rate card gives you the same percentage on every purchase. For example, 2% cashback on everything means you earn $2 for every $100 you spend, whether at a grocery store, gas station, or restaurant. These cards are simpler to use because you do not have to track which categories earn more, and you get the same return everywhere.
A category card offers higher rates on specific types of spending and a lower rate on everything else. A common structure is 5% on groceries, 3% on gas, 2% on restaurants, and 1% on all other purchases. These cards reward you more if your spending matches the categories, but they require you to remember which card to use and which categories earn what. If most of your spending falls outside the high-rate categories, a flat-rate card may earn you more overall.
When cashback actually costs you money
Cashback only saves you money if you pay your full balance each month. If you carry a balance and pay interest, the interest charge will almost always exceed the cashback you earn. For example, if you earn 2% cashback but pay 18% annual interest on a $1,000 balance, you earn $20 in cashback but pay $180 in interest — a net loss of $160.
Similarly, if a card charges an annual fee, you need to earn enough cashback to cover it. A card with a $95 annual fee and 2% flat cashback requires you to spend $4,750 per year just to break even. If you spend less than that, or if you forget to use the card and let the fee charge anyway, you lose money. Always subtract the annual fee from your expected annual cashback before deciding whether to open the account.
How much cashback you can realistically earn
The amount depends entirely on how much you spend. If you spend $500 per month on a 2% flat-rate card, you earn about $120 per year. On a category card where you spend $200 per month in the 5% category and $300 per month elsewhere at 1%, you earn about $156 per year. These are real numbers, not marketing claims — there is no hidden bonus or multiplier that suddenly makes cashback a major income source.
Some cards offer bonus cashback for the first few months or for reaching a spending threshold in the first three months. For example, "earn an extra $200 cashback if you spend $3,000 in the first 90 days." This bonus is real money, but it only applies once, and it requires you to spend that amount anyway. Do not open a card solely for the bonus unless you were already planning to make those purchases.
Cashback versus other rewards like points or miles
Cashback is straightforward: you earn a percentage of your spending and redeem it as money. Points and miles work differently — you earn a number of points per dollar spent, and those points have a variable value depending on what you redeem them for. A point might be worth 1 cent if you redeem it for a statement credit, but 1.5 cents if you use it for travel, or 0.5 cents if you use it for merchandise.
Cashback is usually simpler if you want a predictable return. Points and miles can offer higher value if you are willing to spend time finding the best redemption option, but they also carry the risk that the issuer will devalue the points (pay less per point) in the future. If you prefer knowing exactly what you earn and not thinking about redemption strategy, cashback is the easier choice.
Annual fees and whether they make sense for you
Many premium cashback cards charge an annual fee ranging from $95 to $550. These cards often offer higher cashback rates (3% to 5% in certain categories) or additional perks like travel insurance or airport lounge access. The fee makes sense only if the higher cashback rate or extra benefits save you more than the fee costs.
For example, a card with a $95 annual fee and 3% cashback on groceries, gas, and restaurants makes sense if you spend at least $3,200 per year in those categories (earning $96 in cashback). If you spend less, or if you rarely use those categories, a no-fee card with 1.5% flat cashback will earn you more money overall. Calculate your expected annual cashback before opening any card with a fee.
Frequently Asked Questions
Do I have to spend a certain amount to earn cashback?
No. You earn cashback on every purchase, no matter how small. However, most cards have a minimum redemption amount — often $25 or $50 — so you may need to accumulate cashback over several months before you can cash it out. A few cards let you redeem any amount, but this is uncommon.
Can I earn cashback on cash advances or balance transfers?
No. Cashback is earned only on regular purchases. Cash advances and balance transfers do not earn rewards, and they typically carry high fees and interest rates. Avoid using a cashback card for these transactions.
What happens to my cashback if I close the card?
Cashback that has already posted to your account is yours to keep. Cashback that has not yet posted may be forfeited depending on the card's terms. Check your card's rules before closing an account, and redeem any pending cashback first if possible.
Can I use cashback on multiple cards at once?
Yes. You can own several cashback cards and use each one for the categories where it earns the most. For example, use one card for groceries, another for gas, and a third for everything else. This strategy maximizes your earnings, but it requires tracking multiple cards and their different rates.
Does cashback count as income for taxes?
No. Cashback from credit cards is treated as a rebate on your purchase, not as taxable income. You do not report it on your tax return. This is different from sign-up bonuses or rewards from shopping portals, which may have different tax treatment depending on the amount and circumstances.