APR is the yearly interest rate a credit card company charges when you carry a balance
APR stands for Annual Percentage Rate. It is the cost of borrowing money on your credit card, expressed as a percentage per year. If your card has a 20% APR and you carry a $1,000 balance for a full year without making payments, you would owe roughly $200 in interest charges on top of the original $1,000.
The key word is annual. Credit card companies calculate interest daily or monthly, but they quote the rate as a yearly number so you can compare cards easily. A 15% APR card costs less than a 25% APR card, all else equal. The actual interest you pay depends on how long you carry the balance and how much you owe.
Most credit cards do not charge interest if you pay your full statement balance by the due date. Interest only kicks in when you carry a balance from one month to the next. This is why the APR matters most to people who do not pay in full every month.
Key Takeaways
- APR is the yearly interest rate charged on a credit card balance you do not pay off by the due date.
- Different cards have different APRs, and the same card may have different APRs for purchases, balance transfers, and cash advances.
- A higher APR means you pay more interest the longer you carry a balance, so comparing APRs between cards helps you understand the true cost of borrowing.
- You can avoid paying any interest by paying your full statement balance before the due date each month.
How APR is calculated on your monthly bill
Credit card companies convert the annual rate into a daily rate, then multiply it by your balance each day of the billing cycle. They add up all those daily charges to get your monthly interest bill. This is called the daily balance method, and it is the most common way cards calculate interest.
The timing matters. If you make a payment partway through the month, your balance goes down, and the interest charged for the rest of that month is lower. If you carry a balance for only part of the month, you still pay interest for those days, but not for the full 30 days.
Most cards also charge interest on new purchases if you are already carrying a balance from a previous month. Some cards offer a grace period on new purchases (usually 21 to 25 days) only if your account is paid in full. Once you carry a balance, that grace period often disappears until you pay everything off.
Different APRs for different types of borrowing
A single credit card can have multiple APRs. The purchase APR applies to regular purchases you make with the card. The balance transfer APR applies if you move debt from another card to this one. The cash advance APR applies if you use the card to withdraw cash from an ATM.
Cash advance APR is almost always the highest of the three. Balance transfer APR is often lower than purchase APR, especially if the card is offering a promotional rate. Some cards offer 0% APR on balance transfers for a set period (typically 6 to 21 months), then switch to the regular balance transfer APR after that period ends.
Your card's terms document lists all the APRs that explore to your account. You can also find them on your monthly statement. If you are considering a balance transfer, check whether the 0% rate applies only to the transferred balance or to new purchases as well — the rules vary by card.
Why your APR might change
Credit card companies can raise your APR if you miss a payment or if your credit score drops. This is called a penalty APR, and it is usually higher than your regular purchase APR. The card issuer must notify you before explore a penalty APR, and federal rules limit how high it can go.
Your APR can also change if you have a promotional rate that expires. A 0% APR offer on a new card typically lasts 6 to 21 months, depending on the card. When the promotion ends, your APR jumps to the regular rate listed in your terms. Mark the end date on your calendar so you are not surprised.
Interest rate changes in the broader economy can also affect your APR. If your card has a variable APR (most do), the rate is tied to a benchmark rate set by the Federal Reserve. When the Fed raises or lowers rates, your card's APR may move up or down within a few months.
How APR compares to other credit costs
APR is not the only cost of carrying a credit card balance. Many cards also charge an annual fee (a flat amount you pay each year just to have the card), a late fee (charged if you miss a payment), and a foreign transaction fee (charged if you use the card outside the United States). These fees are separate from interest.
When comparing two cards, look at both the APR and the fees. A card with a 18% APR and no annual fee might be cheaper overall than a card with a 15% APR and a $95 annual fee, depending on how much you carry and how often you use it. The card's terms document lists all fees upfront.
If you plan to pay your balance in full every month, the APR matters much less than the annual fee and rewards structure. If you expect to carry a balance sometimes, the APR becomes one of the most important numbers to compare.
Strategies to minimize interest if you carry a balance
The simplest way to avoid APR charges is to pay your full statement balance by the due date each month. If that is not possible, pay as much as you can. The less you owe, the less interest you pay, regardless of the APR.
If you are carrying a high-APR balance, a balance transfer card with a 0% introductory APR can save you money. During the promotional period, no interest accrues, so all your payments go toward the principal. Once the promotion ends, the regular balance transfer APR kicks in. Make sure you understand when the 0% period ends and what rate applies after.
Another option is a personal loan from a bank or credit union. Personal loans often have lower APRs than credit cards, especially if you have decent credit. The tradeoff is that a personal loan has a fixed payment schedule, whereas a credit card lets you pay any amount above the minimum. Run the numbers for your situation before deciding.
Frequently Asked Questions
Does APR explore if I pay my full balance every month?
No. If you pay your entire statement balance by the due date, you pay no interest, regardless of the APR. Interest only applies to balances you carry from one billing cycle to the next. This is why many people with good payment habits ignore APR when choosing a card.
Can a credit card company change my APR without telling me?
No. Federal law requires card companies to notify you before raising your APR due to a penalty or a change in terms. They must give you at least 45 days' notice. However, they can change a variable APR based on changes to the Federal Reserve's benchmark rate without advance notice, though they must disclose the change on your statement.
What is the difference between APR and interest rate?
APR and interest rate mean the same thing on a credit card. Both refer to the yearly percentage cost of borrowing. The term APR is used to make it easier to compare borrowing costs across different products, like credit cards, personal loans, and mortgages.
Is a 0% APR offer really information programs?
No. A 0% APR offer means you pay no interest during the promotional period, but you still owe the full balance. Once the promotion ends, interest starts accruing at the regular APR on any remaining balance. You also may pay a balance transfer fee (usually 3% to 5% of the amount transferred) upfront.
How do I find out what APR I am being charged?
Check your monthly credit card statement — it lists your current APR and any promotional rates. You can also log into your online account or call the customer service number on the back of your card. Your card's terms document, which you received when you opened the account, lists all possible APRs that may explore.