What a reward credit card does
A reward credit card gives you cash back, points, or miles on purchases you make with that card. The card issuer — usually a bank — pays you a small percentage of what you spend. That money or those points come from fees the card charges to merchants and from interest you pay if you carry a balance.
The catch is straightforward: you only benefit if you pay off the full balance each month. If you carry a balance and pay interest, the interest charges will almost always be larger than the rewards you earn. A card offering 2% cash back becomes a bad deal the moment you pay 18% interest on an unpaid balance.
Key Takeaways
- Reward cards only make financial sense if you pay the full balance every month — otherwise interest charges erase the rewards.
- Different cards reward different spending: some give flat cash back on everything, others give higher rates on groceries or gas, and some give points redeemable for travel.
- Annual fees on premium reward cards can range from $95 to $550, so you need enough spending to earn rewards that cover the fee.
- Your credit score affects which cards you can get and what interest rate you'll pay if you do carry a balance.
- Rewards are taxable income in the eyes of the IRS, though most people receive a 1099 form only if annual rewards exceed $600.
Types of rewards and how they add up
Most reward cards fall into three categories. Flat-rate cards give you the same percentage back on all purchases — typically 1.5% to 2% cash back. These are straightforward: spend $1,000, earn $15 to $20. No categories to track, no bonus structures to remember.
Category cards give higher rewards on specific types of spending. A grocery card might offer 3% cash back on groceries, 2% at gas stations, and 1% on everything else. A travel card might offer 3% on airfare and hotels booked through their portal, 1% on everything else. You earn more if your spending matches the card's categories, but you have to track which card to use for each purchase.
Points-based cards earn points instead of cash. You redeem those points for travel, merchandise, or statement credits. The math is harder because the value of a point depends on how you use it. A point might be worth 1 cent if you redeem it for a gift card, but worth 1.5 cents if you use it for airline tickets. Some people end up sitting on points they never redeem.
When the annual fee makes sense
Many premium reward cards charge an annual fee — $95, $150, $300, or higher. These cards usually offer higher rewards rates or extra perks like airport lounge access or travel credits. The fee only makes sense if your annual rewards exceed it.
Here's the math: a card with a $95 annual fee and 2% cash back needs you to spend $4,750 per year just to break even ($4,750 × 0.02 = $95). If you spend less than that, a no-annual-fee card with 1.5% cash back is better. If you spend $10,000 per year, the $95 card earns you $200 minus the $95 fee, leaving $105 in your pocket. A no-fee card earning 1.5% on the same $10,000 earns you $150 — so the no-fee card wins.
Some cards offer a statement credit toward travel or dining that effectively reduces the annual fee. A $300 card that gives you a $100 annual travel credit really costs $200 if you use that credit. Do the math for your own spending before explore.
How your credit score affects reward card access
Reward cards are typically offered only to people with good or excellent credit — usually a score of 670 or higher, though premium cards often require 740 or above. If your score is lower, you may not be approved for the card you want, or you may be approved at a higher interest rate.
This matters because if you ever do carry a balance, a higher interest rate eats into your rewards faster. A card offering 2% cash back at 22% interest is worse than a card offering 1% cash back at 12% interest if you're carrying a balance.
If your score is below 670, focus on building credit first. Use a secured credit card or become an authorized user on someone else's account. Once your score improves, you'll have access to better reward cards and better rates.
Comparing cards: what to look at beyond the rewards rate
The rewards rate is only one part of the decision. Look at these other factors:
- Annual fee: Does the card charge one? If so, do your rewards cover it?
- Introductory bonus: Many cards offer extra points or cash back in the first few months. A $200 sign-up bonus is real money, but only if you meet the spending requirement without overspending.
- Interest rate (APR): If you ever carry a balance, this is what you'll pay. Compare cards on this even if you plan to pay in full.
- Foreign transaction fees: If you travel internationally, some cards charge 3% per transaction while others charge nothing.
- Redemption options: Can you redeem rewards as cash, or only as points? Are there blackout dates or restrictions?
The tax and reporting side
Reward cash and points are considered taxable income by the IRS. In theory, you owe income tax on the value of rewards you earn. In practice, most people don't report small amounts because the card issuer doesn't report it to the IRS unless your rewards exceed $600 in a calendar year.
If you do receive a 1099 form from your card issuer, you'll need to report that income. The amount is usually small enough that it doesn't meaningfully change your tax bill, but it's technically required. Keep records of your rewards in case you're audited.
Common mistakes to avoid
The biggest mistake is spending more than you normally would just to earn rewards. If a card offers 3% cash back on groceries and you start buying things you don't need, you're losing money. The rewards don't pay for the extra purchases.
The second mistake is carrying a balance to earn rewards. If you spend $5,000 and earn $100 in cash back but pay $800 in interest because you carried the balance for a year, you've lost $700. This is the most expensive mistake people make with reward cards.
The third mistake is explore for multiple cards in a short time to collect sign-up bonuses. Each process triggers a hard inquiry on your credit report, which temporarily lowers your score. Multiple inquiries in a few months can drop your score 5 to 10 points. Space applications out by at least three months if you want to minimize the impact.
Frequently Asked Questions
Do I need good credit to get a reward card?
Most reward cards require a credit score of 670 or higher, and premium cards often require 740 or above. If your score is lower, you won't be approved. Building your score first with a secured card or as an authorized user takes time but opens up better options later.
What happens if I carry a balance on a reward card?
Interest charges will almost always exceed your rewards. A card offering 2% cash back at 18% interest means you're paying far more in interest than you're earning back. Reward cards only work financially if you pay the full balance every month.
Can I use multiple reward cards to maximize earnings?
Yes, many people use different cards for different categories — one for groceries, one for gas, one for travel. This works only if you track which card to use and pay off all balances in full each month. If managing multiple cards leads you to miss a payment or carry a balance, the rewards aren't worth it.
Are sign-up bonuses worth it?
A sign-up bonus is real money if you meet the spending requirement without overspending. A $200 bonus is worth pursuing if you were going to spend that amount anyway. But if you have to change your spending habits or make unnecessary purchases to reach the threshold, the bonus costs you more than it's worth.
How do I know if a reward card is better than a regular card?
Calculate your annual spending, multiply it by the rewards rate, and subtract any annual fee. Compare that number across cards. A card earning 2% on $10,000 annual spending minus a $95 fee nets you $105. A no-fee card earning 1.5% on the same spending nets you $150. The math tells you which card wins for your situation.