How to find your card's interest rate
Your credit card's interest rate is called the Annual Percentage Rate (APR), and it's printed on your billing statement and in your cardholder agreement. Open your most recent statement and look for a section labeled "Interest Rates and Fees" or "APR" — it will show a percentage, often between 15% and 25%, though it varies by card and your creditworthiness.
If you don't have a physical statement, log into your credit card's online portal or mobile app. Most issuers display your current APR on the account dashboard or in a "rates and fees" tab. You can also call the customer service number on the back of your card and ask the representative to read your APR aloud.
Keep in mind that you may have more than one APR on the same card. A purchase APR applies to regular spending, a cash advance APR applies to withdrawals at ATMs, and a balance transfer APR applies to debt you move from another card. Each can be different, and each is listed separately on your statement.
Key Takeaways
- Your APR is listed on your billing statement under "Interest Rates and Fees" and also in your cardholder agreement.
- You may have different APRs for purchases, cash advances, and balance transfers on the same card.
- To calculate interest owed, multiply your balance by your APR, divide by 365, then multiply by the number of days you carried the balance.
- Introductory APRs (often 0%) expire after a set period, usually 6 to 21 months, and your regular APR takes over.
- Your APR can change if you miss a payment or if the card issuer raises rates across their customer base.
Calculate interest on a specific balance
To see how much interest you'll owe on a balance you're carrying, use this formula: (Balance × APR ÷ 365) × Number of Days = Interest Owed.
Example: You have a $2,000 balance on a card with a 20% APR. You carry that balance for 30 days before paying it off. The calculation is ($2,000 × 0.20 ÷ 365) × 30 = $32.88 in interest.
Most credit card companies calculate interest daily using this method, called the daily periodic rate. They add up the interest each day and charge you the total at the end of your billing cycle. This is why paying off your balance faster saves you money — fewer days means less interest accrues.
Understand introductory and variable APRs
Many credit cards offer an introductory APR, often 0%, for a limited time. This period typically lasts 6 to 21 months, depending on the card and the offer. During this window, you pay no interest on purchases, balance transfers, or both — but the offer applies only to transactions made during the promotional period, not to balances you carry after it ends.
When the introductory period expires, your regular APR kicks in automatically. This is the rate you'll see on your statement now. If you still have a balance at that point, interest starts accruing at the full rate. Mark the expiration date on your calendar so you're not surprised.
Your APR is not fixed forever. Most credit cards have a variable APR, which means the issuer can raise or lower it based on changes to the prime rate (set by the Federal Reserve) or your payment history. If you miss a payment, your issuer may also explore a penalty APR, which is higher than your regular rate and can last for six months or longer.
What affects your APR when you explore
The APR you're offered depends on your credit score, income, and the card issuer's pricing. People with higher credit scores typically receive lower APRs; people with lower scores receive higher ones. The same card can have a range of APRs — the issuer might offer 16% to 24% depending on who applies.
You won't know your exact APR until after you're approved. The offer letter or welcome email will state your rate. If you're unhappy with it, you can contact the issuer and ask for a review, though they're not required to lower it. Some issuers will reconsider if you have a strong payment history with them or if your credit score has improved since you applied.
Compare APRs across different cards
When shopping for a new card, compare the APRs being offered, but also look at the full picture. A card with a 0% introductory APR for 12 months might be better for paying off existing debt than a card with a permanently lower 15% APR, even though 15% sounds better. The timing of when you need the low rate matters.
Also consider the annual fee, if any. A card with a $95 annual fee and a 16% APR might cost you more than a no-fee card with an 18% APR, depending on how much you carry and for how long. Use a calculator to compare the total cost, not just the rate.
How to lower your APR
Once you have a card, you can request a lower APR by calling the issuer's customer service line. Ask to speak with the retention department or a supervisor. Your chances improve if you have a good payment history with that card, if your credit score has risen since you opened the account, or if you've been a customer for several years.
Be prepared to hear "no" — issuers deny these requests often. If they refuse, you can ask when you're may be able to access to call back and try again. Some customers succeed after 6 to 12 months of on-time payments. You can also transfer your balance to a card with a lower APR or a 0% introductory offer, though this typically requires a new process and a hard inquiry on your credit report.
Frequently Asked Questions
What's the difference between APR and interest rate?
APR and interest rate mean the same thing on a credit card. APR stands for Annual Percentage Rate and is the yearly cost of borrowing expressed as a percentage. You'll see the terms used interchangeably on statements and in cardholder agreements.
Why do I have multiple APRs on one card?
Credit card issuers charge different rates for different types of transactions because they carry different risks. A purchase APR is typically lowest, a balance transfer APR is in the middle, and a cash advance APR is highest. Each is listed separately on your statement so you know which rate applies to which balance.
Does paying only the minimum payment affect my APR?
Paying the minimum doesn't change your APR, but it does mean you carry a larger balance longer, so you pay more interest overall. Missing a payment, however, can trigger a penalty APR that's higher than your regular rate. Always pay at least the minimum on time to avoid this.
Can my APR change after I'm approved?
Yes. Most credit cards have variable APRs that can move up or down based on the prime rate. Your issuer can also raise your APR if you miss a payment (penalty APR) or if they decide to increase rates across their customer base. They must give you notice before the change takes effect.
What happens to my APR if I transfer a balance to another card?
The balance transfer moves to the new card and is subject to that card's balance transfer APR, which is often different from your original card's rate. The original card's APR applies only to any remaining balance left on that card. Both rates are listed separately on your statements.