Cashback rewards return a percentage of what you spend back to your account
A cashback card gives you money back on purchases — typically between 0.5% and 5% depending on the card and the category of purchase. A 2% cashback card means you get $2 back for every $100 you spend. That money usually lands in your account as a statement credit, a check, or a deposit to a linked bank account.
The catch is that cashback only saves you money if you would have made that purchase anyway. Spending more to earn cashback is a loss, not a gain. The card issuer profits when you carry a balance or when the merchant pays them a fee for processing your transaction. Understanding how the math works — and what happens if you miss a payment — determines whether cashback actually reduces your costs or increases them.
Key Takeaways
- Cashback rates vary by card and by purchase category, so a card that pays 5% on groceries may pay only 1% on gas or 0% on everything else.
- Annual percentage rate (APR) on unpaid balances typically ranges from 18% to 29%, which erases cashback earnings within weeks if you carry a balance.
- Many cashback cards charge an annual fee ranging from $0 to $500, which you must earn back through spending before cashback becomes profitable.
- Cashback is taxable income in the year you receive it, though most cardholders receive a 1099-INT or 1099-MISC only if cashback exceeds $600 in a year.
How cashback rates and categories work
Cards offer different rates for different spending categories. A common structure is 5% on rotating categories (groceries one quarter, gas the next), 2% on one fixed category like restaurants or travel, and 1% on everything else. Some cards offer a flat rate — 2% on all purchases, for example — with no categories to track.
Rotating categories require you to set up them each quarter, usually through the card issuer's website or app. If you forget to set up, you drop to a lower rate, often 1%. Fixed-rate cards are simpler but typically pay less on high-spending categories. The best card for you depends on where you actually spend money. If you spend $300 a month on groceries and $100 on everything else, a 5% grocery card beats a flat 2% card. If your spending is scattered, flat-rate simplicity may matter more than a higher top rate you rarely reach.
Annual fees and the break-even calculation
Cards with higher cashback rates often charge annual fees. A card paying 5% on groceries might cost $95 per year. You need to earn at least $95 in cashback to break even. If you spend $2,000 per year on groceries at 5%, you earn $100 — enough to cover the fee with $5 left over. If you spend $1,500, you earn $75, which means the card costs you $20 net.
No-annual-fee cards typically pay lower rates, often 1% to 2% flat. They make sense if your spending is low or if you want simplicity without doing the math. Premium cards with $300+ annual fees target people who spend $20,000 or more per year on bonus categories. Before opening a card, calculate your expected annual cashback in the categories that card rewards, then subtract the annual fee. If the result is negative, the card costs you money.
Interest charges erase cashback gains quickly
If you carry a balance, the interest you pay overwhelms any cashback you earn. A $5,000 balance at 22% APR costs you $916 per year in interest. Even a 5% cashback card on that balance earns only $250. You lose $666 net. Most people who benefit from cashback pay their full statement balance every month, meaning they owe zero interest.
The math is unforgiving: a single month of interest at typical credit card rates erases months of cashback earnings. If you tend to carry balances, a no-annual-fee card with a low APR (if available) or a different payment method altogether — a debit card, cash, or a 0% promotional period card — will cost you less than chasing cashback.
Comparing cards side by side
| Card Type | Typical Cashback Rate | Annual Fee | Best For |
|---|---|---|---|
| Flat-rate, no fee | 1.5% to 2% all purchases | $0 | Low spending, straightforward tracking, people who carry balances occasionally |
| Category-based, no fee | 3% to 5% on categories, 1% elsewhere | $0 | High spending in specific categories like groceries or gas |
| Premium rewards | 3% to 5% on categories, 1% elsewhere | $95 to $550 | Very high spending ($20,000+/year) in bonus categories |
| Travel-focused | 2% to 5% on travel, 1% elsewhere | $0 to $450 | Frequent travelers who book flights, hotels, or rental cars |
Tax treatment of cashback earnings
Cashback is considered taxable income by the IRS. In most cases, you do not receive a tax form because the amount is small. Card issuers typically send a 1099-INT or 1099-MISC only if you earn more than $600 in a single calendar year. Below that threshold, you are still technically required to report it, but the IRS rarely pursues it.
If you do receive a 1099, report the cashback as miscellaneous income on your tax return. The tax owed depends on your bracket — someone in the 22% bracket owes roughly $0.22 per dollar of cashback earned. This is a small cost but real. A $500 annual cashback earner in the 22% bracket owes about $110 in federal tax on that income.
When cashback does not work
Cashback loses money in three common situations. First, if you carry a balance. Second, if you spend more than you would have just to earn the reward. Third, if you open multiple cards to chase sign-up bonuses and pay annual fees on cards you do not use. Each of these turns cashback from a discount into a cost.
Cashback also does not work if you forget to redeem it. Some cards expire rewards after a period of inactivity, though most major issuers do not. Still, if you earn $50 in cashback and never claim it, you have gained nothing. Set a reminder to redeem once or twice per year, or choose a card that automatically deposits cashback to your bank account.
Frequently Asked Questions
Does cashback count as income on my taxes?
Yes, cashback is taxable income. You receive a tax form (1099-INT or 1099-MISC) only if you earn more than $600 in a calendar year. Below that, you are still required to report it, but enforcement is rare. The tax you owe depends on your income bracket — roughly 10% to 37% of the cashback amount.
Can I use multiple cashback cards to maximize rewards?
Yes, many people use one card for groceries, another for gas, and a third for everything else. This works only if you pay all balances in full each month and track which card to use for each purchase. If you lose track or carry balances, the complexity costs more than the rewards earn.
What happens to cashback if I close the card?
Cashback you have already earned stays in your account and can be redeemed after you close the card. Cashback you have not yet earned is forfeited. Some cards also claw back sign-up bonuses if you close within a year, so check the terms before closing.
Is a sign-up bonus better than ongoing cashback?
A sign-up bonus of $200 for spending $500 in three months is 40% cashback on that spending — far higher than any ongoing rate. However, sign-up bonuses require you to meet a spending threshold, and many cards charge annual fees. Calculate whether you would use the card long-term; if not, the bonus may not justify the fee.
Do I lose cashback if I return a purchase?
Yes, when you return an item, the cashback on that transaction is reversed. If you earned $5 cashback on a $100 purchase and return it, that $5 disappears. Some card issuers let you keep a small amount of the cashback on returns, but most reverse it entirely.