APR is the yearly cost of borrowing money on your credit card, shown as a percentage

APR stands for Annual Percentage Rate. It is the interest rate your credit card company charges you when you carry a balance — money you owe but have not paid off in full. If your card has a 20% APR and you owe $1,000, you will pay roughly $200 in interest over a year if you make no payments. The actual amount depends on how much you owe each month and how long you carry the balance.

Credit card companies are required to show you the APR before you open an account and on every statement you receive. Different types of purchases on the same card can have different APRs: your regular purchase APR might be 18%, but balance transfers or cash advances might be 25% or higher. Introductory rates — sometimes 0% for the first 6 to 12 months — are common on new cards, but they expire and your regular APR kicks in.

Key Takeaways

  • APR is the yearly interest rate charged on money you borrow and do not pay back in full each month.
  • The higher your APR, the more interest you pay; a 25% APR costs roughly twice as much as a 12% APR on the same balance.
  • Your credit card company must disclose the APR in writing before you open the account and on every monthly statement.
  • Introductory 0% APR offers expire after a set period, usually 6 to 21 months, and your regular APR applies to any remaining balance.
  • Paying your full statement balance by the due date means you pay no interest, regardless of the APR.

How APR is calculated on your monthly bill

Credit card companies convert the yearly APR into a daily rate, then multiply it by your balance each day of the month. If you owe $2,000 on day 1 and pay $500 on day 15, the company charges interest on $2,000 for 14 days and $1,500 for the remaining days. This is called the average daily balance method, and it is the most common way cards calculate interest.

The interest charge appears on your next statement as a separate line item, usually labeled "Interest Charges" or "Finance Charges." If you pay your full statement balance by the due date, you owe no interest at all — the APR does not apply. This is true even if you have a high APR. The interest only kicks in when you carry a balance past the due date.

Why different purchases have different APRs

Your credit card agreement may list separate APRs for regular purchases, balance transfers, and cash advances. A balance transfer — moving debt from another card to this one — often has a higher APR than regular purchases, sometimes 3% to 5% higher. Cash advances (withdrawing money from an ATM using your credit card) usually have the highest APR of all, and interest starts accruing immediately with no grace period.

Some cards also offer a promotional or introductory APR, often 0%, for a limited time on new purchases or balance transfers. When that period ends, the regular APR applies to any remaining balance. Read the fine print to know exactly when the promotional rate expires and what rate replaces it.

How APR compares across different cards

APR varies widely depending on the card type and your credit history. Cards for people with excellent credit might offer APRs starting at 12% to 15%. Cards for people with fair or limited credit history often start at 20% to 25% or higher. Rewards cards and premium cards sometimes have lower APRs than basic cards, though not always.

Your own APR depends partly on what the card issuer offers and partly on your credit score at the time you open the account. Even after you open the card, the company can raise your APR if you miss a payment or if your credit score drops significantly. They must notify you in writing before the increase takes effect, usually with at least 45 days' notice.

The difference between APR and interest charges

APR is the rate; the interest charge is the actual dollar amount you pay. If your APR is 18% and you owe $500 for one month, your interest charge is roughly $7.50 (18% divided by 12 months, multiplied by $500). If you owe $500 for a full year at 18% APR, you pay roughly $90 in interest. The longer you carry a balance, the more interest you pay.

Your statement shows both: the APR in the terms section and the actual interest charge on the charges and fees section. Paying down your balance faster reduces the interest you owe because interest is calculated on the amount you still owe, not the original amount.

Introductory APR offers and what happens when they end

Many new credit cards offer 0% APR for a set period — commonly 6, 12, 18, or 21 months — on new purchases, balance transfers, or both. During this period, you pay no interest on that type of transaction, even though you are borrowing money. This can save hundreds of dollars if you transfer a large balance or make a big purchase and pay it off before the promotional period ends.

When the introductory period expires, your regular APR applies to any remaining balance. If you have a $3,000 balance when a 0% APR offer ends, and your regular APR is 22%, you will start paying interest on that $3,000 immediately. Plan to pay off the balance before the promotional rate expires, or be prepared for a significant jump in interest charges.

Frequently Asked Questions

Does APR apply if I pay my full balance every month?

No. If you pay your entire statement balance by the due date, you pay no interest and the APR does not apply. This is true regardless of how high your APR is. The interest only charges when you carry a balance past the due date.

Can my credit card company change my APR after I open the account?

Yes. The company can raise your APR if you miss a payment or if your credit score drops. They must notify you in writing at least 45 days before the increase takes effect. Some cards also allow the company to raise the APR after an introductory period ends, as long as they give you notice.

What is the difference between a fixed APR and a variable APR?

A fixed APR stays the same for the life of the account (though the company can still raise it with notice if you miss a payment). A variable APR changes based on market interest rates, usually tied to the prime rate. Variable APRs can go up or down, so your interest charges may change month to month.

Is a lower APR always better?

Yes, a lower APR means you pay less interest on any balance you carry. However, APR is only one factor in choosing a card. Rewards, annual fees, and how you plan to use the card matter too. If you pay your full balance every month, the APR does not matter at all.

What happens if I only make the minimum payment?

You will pay interest on the remaining balance, and it will take years to pay off. Minimum payments are usually just enough to cover interest and a small portion of principal, so your balance shrinks very slowly. Paying more than the minimum reduces interest charges and gets you out of debt faster.