Cash back cards are the simplest kind of rewards card: you spend, and a small share comes back as a statement credit, a deposit or store credit. That simplicity is their strength, but there are still important differences between cards that pay the same rate everywhere, cards with bonus categories and cards tied to a specific store, warehouse club or tech brand.
This guide explains the main types, how to work out what you would really earn and which costs can erase the benefit. We do not recommend specific cards and do not state rewards rates or fees for any card; those change and must be read on the issuer’s own page before you apply.
Types of cash back cards
Flat-rate cards
Pay the same percentage on almost every purchase. They are easy to understand and work well if your spending is spread across many types of shops. Some flat-rate cards split the reward, for example part when you buy and part when you pay. Read how and when rewards are credited.
Category cards
Pay a higher rate in some categories, such as groceries, fuel, dining or online shopping, and a lower base rate elsewhere. Some have fixed categories; others rotate categories during the year and may require you to activate them. Bonus categories often have spending caps.
Store, warehouse and co-branded cards
Issued with a retailer, warehouse club or technology brand. They may pay higher rewards at that brand, sometimes only as store credit, and lower rewards elsewhere. The CFPB notes that store credit cards can be easier to obtain and typically come with lower credit limits, and that store cards normally carry a much higher interest rate than a typical bank card. They may also advertise deferred interest promotions, which work very differently from a true 0% offer.
Business cash back cards
Designed for business expenses and often offer higher rates on office supplies, internet, phone or fuel. Business cards may not have all the same legal protections as consumer cards, so read the agreement carefully.
How to estimate what you would earn
- Pull three months of statements and group your spending: groceries, fuel, dining, online, bills, other.
- Apply each card’s rates and caps to those real numbers.
- Subtract the annual fee, if any.
- Check how rewards are paid: statement credit, bank deposit, store credit or points. Store credit is only valuable if you shop there anyway.
- Repeat for two or three cards. The best card is the one that pays most on your real spending, not the one with the highest headline rate.
The costs that cancel rewards
Interest
If you carry a balance, interest almost always costs more than cash back earns. The CFPB explains that if you pay your balance in full by the due date and were not carrying a balance, a grace period lets you avoid interest on purchases. If you do not, interest can start from the date of each purchase. See the CFPB’s explanation of grace periods.
Deferred interest promotions
Store cards often advertise “no interest if paid in full” within a set period. The CFPB warns that this is deferred interest: if you do not pay the entire promotional balance by the deadline, interest going back to the date of purchase can be added. A true “0% intro APR” offer does not work this way. The CFPB explains the difference in its blog on promotional financing offers.
Fees
Look for annual fees, foreign transaction fees, cash advance fees and late fees in the pricing table. A card with no annual fee and a slightly lower rate can beat a fee card for moderate spenders.
Rules that are easy to miss
- Rewards on returns. If you return a purchase, the rewards are usually reversed.
- Minimum redemption amounts. Some cards only let you redeem after a threshold.
- Expiry. Rewards may be lost if the account is closed or inactive.
- Category definitions. Merchants are coded by the card network; a supermarket inside a superstore may not count as groceries.
- Changes to the programme. Read notices from your issuer. Regulation Z requires advance notice of significant changes to account terms.
Official US government source. We are not a card issuer and do not take applications.
Before you apply
- Check your free credit reports at AnnualCreditReport.com.
- Read the issuer’s pricing table and cardholder agreement.
- Decide whether you will pay in full every month. If not, focus on a low APR rather than rewards.
- Avoid opening several cards at once just to collect bonuses.
Frequently asked questions
Do I get cash back on balance transfers or cash advances?
Usually not. Most cards exclude them from rewards; check the rewards terms.
Are store cards a good way to build credit?
The CFPB lists retail cards among products that can help build credit because of their lower limits, but their interest rates are typically high, so pay in full.
Should I choose rotating categories?
Only if you will track and activate them. Otherwise a flat-rate card is often simpler and earns similar amounts.
Can I have more than one cash back card?
Yes. Some people combine a flat-rate card with a category card, but more cards mean more due dates to manage.
Sources
- CFPB – What is a grace period for a credit card?
- CFPB – Understanding promotional financing offers
- CFPB – Ways to start or rebuild a good credit history
- AnnualCreditReport.com
Related guides
- How Credit Card Interest Works: APR, Grace Periods and Minimum Payments
- 0% Intro APR and Balance Transfer Cards: How the Offers Really Work
- Credit Card Fees Explained: Annual, Foreign Transaction, Cash Advance and Late Fees
- Secured and Credit-Builder Cards: How They Work and How to Use One Well
- Travel Rewards Credit Cards: How to Compare Miles, Points, Fees and Protections
Opportuly Careers is an independent guide. We are not a bank, lender or card issuer, we do not receive applications and this article is general information, not financial advice.
