What a rewards card does and how you earn points

A rewards credit card gives you points, miles, or cash back on the money you spend. Every time you use the card to buy something, you earn a percentage of that purchase as a reward. The card issuer — the bank or company that issued the card — tracks these rewards in your account, and you can redeem them later for travel, merchandise, statement credits, or cash.

The earning rate varies by card and by category. Some cards give you the same percentage back on all purchases — typically 1% to 2% cash back. Others give you higher rates on specific categories like groceries, gas, dining, or travel, and a lower rate on everything else. A card might offer 3% back on groceries and 1% on everything else, for example. You earn rewards automatically each time the transaction posts to your account.

The issuer pays for these rewards by charging merchants a fee when you use the card. That fee is built into the price of goods and services, which is why rewards cards can afford to give money back. You do not pay the issuer directly for the rewards — they come from the merchant fee.

Key Takeaways

  • Rewards cards earn you points, miles, or cash back on purchases, with rates that vary by card and spending category.
  • Most rewards cards charge an annual fee ranging from $0 to $500 or more, and the fee must be lower than the rewards you expect to earn for the card to be worth using.
  • You only earn rewards if you pay off your balance each month — interest charges will quickly erase any cash back you accumulate.
  • Redemption options differ by card: some let you convert points to cash when ready, while others require you to book travel through the card's portal or redeem for specific merchandise.
  • Sign-up bonuses can be worth hundreds of dollars, but they require you to spend a set amount within a set timeframe, and the bonus counts as taxable income in some cases.

Annual fees and when they make sense

Most rewards cards charge an annual fee — a yearly cost to hold the card. This fee ranges from $0 to $500 or higher, depending on the card's rewards rate and the perks it includes. A basic cash back card might have no annual fee, while a premium travel card with lounge access and travel credits might charge $450 per year.

The annual fee only makes sense if the rewards you earn exceed what you pay. If a card charges $95 per year and you earn $150 in cash back annually, you come out $55 ahead. If you earn only $80, you lose $15. Calculate your expected annual spending in the card's bonus categories, multiply by the rewards rate, and subtract the annual fee. If the result is positive, the card pays for itself.

Some cards waive the first-year fee or offer a statement credit that offsets the fee in year one. Read the terms carefully — the credit may expire after one year, or it may require you to spend a minimum amount to receive it.

How sign-up bonuses work and what they cost

A sign-up bonus (also called an introductory bonus or welcome bonus) offers you a large number of points or dollars if you spend a certain amount within a certain timeframe — usually $500 to $5,000 in the first three months. If you meet the spending requirement, the bonus posts to your account automatically. A card might offer 50,000 bonus points worth $500 in cash back if you spend $3,000 in the first three months.

The bonus is real money, but it comes with conditions. You must spend the required amount on the card within the window, or you do not receive it. You cannot manufacture spending by paying bills you would pay anyway with a different card — you have to shift your actual spending to meet the requirement. If you cannot naturally spend that much in the timeframe, the bonus is not worth pursuing.

The IRS may treat a sign-up bonus as taxable income in some cases, though most cardholders do not receive a tax form for it. Check the card's terms or ask the issuer whether the bonus is taxable in your state.

Interest rates and why paying your balance matters

Every rewards card has an annual percentage rate (APR) — the interest rate you pay on any balance you carry from month to month. This rate typically ranges from 15% to 25%, depending on your credit score and the card issuer. If you carry a $1,000 balance at 20% APR, you pay roughly $200 in interest over a year.

Rewards cards only make financial sense if you pay your full balance each month. If you carry a balance, the interest you pay will exceed the rewards you earn. A card offering 2% cash back becomes a losing proposition the moment you pay 15% or more in interest. Pay the full statement balance by the due date, and you owe no interest. Carry any amount into the next month, and interest accrues on the entire balance.

Some cards offer a 0% introductory APR for a set period — typically 6 to 21 months — on new purchases, balance transfers, or both. This period lets you carry a balance without interest, but only during the promotional window. After it ends, the regular APR applies to any remaining balance.

Redemption options and how to get the most value

How you redeem your rewards affects how much they are worth. Some cards let you convert points directly to cash and deposit it into your bank account — a straightforward option where 1 point equals 1 cent, or whatever the card specifies. Other cards require you to redeem through a specific portal, and the value per point changes depending on what you redeem for.

Travel cards often offer higher redemption value if you book through the card's travel portal rather than converting to cash. A card might give you 1.5 cents per point if you book a flight through their portal, but only 1 cent per point if you convert to a statement credit. The difference adds up quickly on large redemptions. Read the redemption terms before you sign up so you know what your points are actually worth.

Some cards let you transfer points to airline or hotel partners at a fixed rate — say, 1 point equals 1 airline mile. This option can offer value if you know which airlines or hotels you use, but it locks you into those partners. If you change travel habits, your points may become less useful.

Bonus categories and how to maximize them

Cards that offer higher rewards in specific categories — groceries, gas, dining, travel — only pay those higher rates if you use the card in those categories. A card offering 5% back on groceries pays 5% only on purchases coded as grocery stores. Buying groceries at a warehouse club or a general retailer may not may have access to for the bonus rate.

Some cards limit the bonus categories to a set dollar amount per quarter or year. A card might offer 5% back on groceries up to $1,500 per quarter, then 1% on groceries after that. Once you hit the cap, you earn the lower rate for the rest of the quarter. Track your spending in bonus categories so you know when you are approaching the limit.

Rotating category cards change their bonus categories each quarter — one quarter it is groceries, the next it is gas. You have to set up the category each quarter to earn the bonus, usually through the card's website or app. If you forget to set up, you earn only the base rate.

Credit score impact and responsible use

Opening a rewards card affects your credit score in two ways. First, the card issuer runs a hard inquiry on your credit report, which temporarily lowers your score by a few points. Second, a new account lowers your average account age, which also affects your score slightly. These impacts fade within a few months.

Using the card responsibly — spending within your means and paying your balance in full each month — actually improves your credit score over time. It shows lenders you can manage credit responsibly. Carrying a balance or missing a payment will damage your score far more than the initial dip from opening the card.

If you open multiple rewards cards in a short period to collect sign-up bonuses, the cumulative impact on your score is larger. Space out applications by at least a few months to minimize the damage. Only open cards you actually intend to use — closing cards later can hurt your score by reducing your available credit.

Comparing cards: what actually matters

When comparing rewards cards, focus on the categories where you spend the most money. If you spend $200 a month on groceries but only $50 on gas, a card with 5% back on groceries and 2% on gas is more valuable than the reverse. Calculate the annual value of each card based on your actual spending, subtract the annual fee, and compare the net benefit.

Do not chase a card just because it has a high sign-up bonus if the ongoing rewards rate does not match your spending. A $500 sign-up bonus is only valuable if you plan to use the card regularly afterward. If you will use it once and never again, the bonus is a one-time gain that does not justify an annual fee.

Read the fine print on redemption options, category definitions, and any caps on bonus rates. A card advertising 5% back on groceries is less valuable if groceries are capped at $1,500 per quarter and you spend more than that. A card advertising 2% cash back on all purchases is straightforward and easier to compare than one with rotating categories you have to set up each quarter.

Frequently Asked Questions

Do I have to use a rewards card to get the sign-up bonus?

No, but you have to meet the spending requirement within the timeframe. Most sign-up bonuses require you to spend a set amount — typically $500 to $5,000 — in the first three months. You must charge that amount to the card itself; paying off the card with a different payment method does not count. If you cannot meet the requirement through normal spending, you will not receive the bonus.

What happens to my rewards if I close the card?

Your rewards stay in your account and remain redeemable after you close the card, though some issuers have policies about how long you can wait. Check your card's terms before closing. You will no longer earn new rewards once the account is closed, and you may lose access to any promotional rates or benefits tied to the card.

Can I use a rewards card to pay my taxes or other bills?

You can use a rewards card to pay most bills directly, but some billers charge a processing fee that eats into your rewards. Paying taxes with a credit card usually triggers a 1.87% to 2.35% convenience fee, which means you need a card offering at least that much cash back to break even. For most bills, paying directly from your bank account is cheaper.

Are rewards taxable income?

The IRS generally does not treat cash back or rewards as taxable income because they are considered a discount on your purchase, not income. Sign-up bonuses are less clear — some issuers report them as taxable, others do not. Check your card's terms or contact the issuer to confirm whether your bonus is taxable in your state.

What if I miss a payment on a rewards card?

A missed payment will damage your credit score and may trigger a late fee and a higher interest rate. You will also lose any promotional rates you had, like a 0% introductory APR. Some issuers may close your account or reduce your credit limit. Pay at least the minimum by the due date to avoid these consequences.