What makes a credit card worth using depends on how you spend
The best credit card for you is not the one with the highest rewards rate or the lowest interest rate — it is the one whose rewards structure matches where you actually spend money, whose annual fee (if any) costs less than the rewards you will earn, and whose terms fit your financial situation. A card that earns 5% back on groceries is worthless if you never cook at home. A card with no annual fee but poor rewards is a waste of the credit line.
The choice comes down to three things: what you spend on, whether you carry a balance month to month, and whether an annual fee makes sense for your household. This guide walks through the main card types, what each one costs, and how to calculate whether a specific card will save you money or cost you money over a year.
Key Takeaways
- Rewards cards only make financial sense if you pay the full balance every month — the interest charges on a carried balance will erase any rewards you earn.
- A card's value depends on matching its rewards categories to your actual spending, not on the headline rewards rate.
- Annual fees are worth paying only if your annual rewards exceed the fee by a meaningful margin — usually at least $200 more.
- If you carry a balance regularly, a low-interest card or a 0% introductory APR card may save more money than a rewards card.
- Your credit score determines which cards you can open and what interest rate you will receive, so check your score before you start comparing.
Rewards cards: how to know if the math works in your favor
A rewards card pays you back a percentage of what you spend — typically 1% to 5% depending on the category. The catch is that this only saves you money if you pay the full statement balance every month. If you carry a balance, the interest you pay will almost always exceed the rewards you earn.
To know whether a rewards card makes sense for you, add up what you spend annually in the card's bonus categories. If you spend $20,000 a year on groceries and the card earns 5% back, that is $1,000 in rewards. If the card has a $95 annual fee, your net benefit is $905. If it has no annual fee, your benefit is the full $1,000. But if you carry a $5,000 balance at 20% APR, you will pay $1,000 in interest alone — the rewards disappear.
The most common rewards categories are groceries, gas, dining, travel, and general purchases. Some cards offer rotating categories that change each quarter. Others offer a flat rate (usually 1.5% to 2%) on everything. Flat-rate cards are simpler but pay less if you spend heavily in high-reward categories.
Annual fees: when they cost you money instead of saving it
A card with a $95 or $150 annual fee only makes sense if you will earn at least that much in rewards during the year. Many premium cards also offer statement credits — for example, a $300 annual fee card might include a $100 airline credit and a $100 dining credit, which reduces your true cost to $100.
Calculate your true annual cost this way: take the annual fee, subtract any statement credits you will actually use, then subtract your expected annual rewards. If the number is negative, the card pays you. If it is positive, the card costs you money.
Example: A card costs $95 per year, offers no statement credits, and you spend $15,000 annually in its bonus categories at 2% back. Your rewards are $300. Your net benefit is $300 minus $95 = $205. That card makes sense. But if you only spend $3,000 in bonus categories, your rewards are $60, and your net cost is $95 minus $60 = $35 out of pocket. That card does not make sense for you.
Low-interest and 0% introductory APR cards for people who carry balances
If you regularly carry a balance from month to month, a rewards card will cost you money. Instead, look for a card with a low ongoing interest rate or a 0% introductory APR period.
A 0% introductory APR typically lasts 6 to 21 months, depending on the card and the offer. During that time, you pay no interest on purchases or balance transfers (or sometimes just one or the other). After the introductory period ends, a standard APR kicks in. This type of card makes sense if you have a specific debt you plan to pay off within the interest-free window.
A low-interest card has a permanently lower APR than standard cards — often 2 to 8 percentage points below the market average. These cards usually have no annual fee and minimal rewards, because the bank is already giving you a break on interest. They make sense if you know you will carry a balance indefinitely and want to minimize what you pay in interest.
How credit score affects which cards you can open
Your credit score determines two things: whether a card issuer will approve you, and what interest rate you will receive. Most premium rewards cards require a score of 670 or higher. Some require 700 or higher. Cards designed for people rebuilding credit may accept scores as low as 550.
If your score is below 650, you have fewer options. You may may have access to for a secured card, which requires a cash deposit (usually $200 to $2,500) that becomes your credit limit. Secured cards report to the credit bureaus just like regular cards, so using one responsibly for 6 to 12 months can improve your score enough to may have access to for unsecured cards later.
Before you explore for any card, check your credit score. Multiple applications in a short time can lower your score, so knowing where you stand helps you target cards you are likely to be approved for.
Comparing cards side by side: what to look at beyond the rewards rate
When you narrow your choices to two or three cards, compare these details:
- Annual percentage rate (APR): The interest rate you pay if you carry a balance. This varies based on your credit score, so the rate shown on the website may not be the rate you receive.
- Annual fee: What you pay per year, and whether it is waived the first year.
- Rewards structure: The percentage back in each category, and whether there are caps (for example, 5% back on groceries up to $1,500 per quarter, then 1% after that).
- Sign-up bonus: Extra rewards for spending a certain amount in the first few months. Only count this if you would spend that amount anyway.
- Foreign transaction fees: What you pay if you use the card outside the United States. Usually 0% to 3% per transaction.
- Grace period: The number of days between your statement closing date and your payment due date. Longer is better — 25 days is standard, but some cards offer 30 days.
Common card types and what they are designed for
Cash back cards pay you a percentage of your spending as cash, which posts to your account as a statement credit or can be transferred to a bank account. They are straightforward and work for any spending category. The downside is that the rewards rate is usually lower than category-specific cards.
Travel cards earn points or miles on flights, hotels, and dining, and often include travel perks like airport lounge access or trip cancellation insurance. They make sense if you travel regularly and can redeem points for flights or hotels. If you never fly, a travel card is a waste of an annual fee.
Category cards offer high rewards (usually 3% to 5%) in specific categories like groceries, gas, or dining, and a lower rate (usually 1%) on everything else. They reward focused spending but require you to track which card to use for each purchase.
Balance transfer cards offer a 0% APR on balances you transfer from another card, usually for 6 to 21 months. They often charge a one-time transfer fee (2% to 5% of the amount transferred). These cards make sense if you have existing credit card debt and want to pay it down without interest.
Frequently Asked Questions
Does opening a new credit card hurt my credit score?
Yes, but usually not by much. A new process triggers a hard inquiry, which lowers your score by a few points. Opening the account itself also lowers your average account age. Most people see a 5 to 10 point drop that recovers within a few months. Avoid explore for multiple cards in a short time, as each process counts separately.
What is the difference between a sign-up bonus and ongoing rewards?
A sign-up bonus is a one-time reward for spending a certain amount (usually $500 to $5,000) within the first few months. Ongoing rewards are the percentage back you earn on every purchase after that. Only count a sign-up bonus if you would spend that amount anyway — do not spend extra just to earn the bonus.
Can I use multiple cards to maximize rewards?
Yes. Many people use one card for groceries, another for gas, and a third for everything else, based on which card offers the highest rate in each category. This works if you can track which card to use and pay all balances in full each month. If you carry a balance on any card, the interest charges will exceed any rewards you earn across all cards.
What happens if I miss a payment?
You will be charged a late fee (usually $25 to $40 for the first missed payment) and a higher APR may kick in. A missed payment also reports to the credit bureaus and lowers your score. If you miss a payment by 30 days or more, the card issuer may close your account. Set up automatic payments for at least the minimum to avoid this.
Should I close a credit card after I pay it off?
Usually no. Closing a card lowers your average account age and reduces your total available credit, both of which lower your credit score. If the card has no annual fee, keep it open and use it occasionally. If it has an annual fee you do not want to pay, call the issuer and ask if they will convert it to a no-fee version of the card.