Credit card interest rates vary widely, but most cards fall between 18% and 24% annual percentage rate (APR)
The interest rate on your card depends on your credit score, the card issuer's pricing, and the type of card. Someone with excellent credit might get 15% APR on a rewards card, while someone with fair credit might pay 24% or higher on the same card. Banks set these rates based on how risky they think you are as a borrower — the lower your credit score, the higher the rate they charge you.
The rate you see advertised is the annual percentage rate, or APR. This is the yearly cost of borrowing expressed as a percentage. If you carry a $1,000 balance at 20% APR and make no payments, you would owe roughly $200 in interest over a year. Most cards charge interest daily on your balance, so the longer you carry debt, the more you pay.
Key Takeaways
- Most standard credit cards charge between 18% and 24% APR, though rates can be lower for excellent credit or higher for fair credit.
- Your APR is determined by your credit score, the card issuer's pricing, and the card type — not by how much you spend or how long you've held the card.
- Interest only charges if you carry a balance past your statement due date; paying in full each month means you pay no interest regardless of the APR.
- Card issuers can raise your APR if you miss a payment or if your credit score drops, though they must give you notice before doing so.
- Introductory 0% APR offers typically last 6 to 21 months and explore only to new purchases or balance transfers, not to existing balances.
How credit card APR is calculated and charged
Your card issuer calculates interest using your daily balance. Each day, they take your outstanding balance, divide it by 365, multiply by your APR, and add that day's interest to your account. This happens whether you check your balance or not. By the time your statement arrives, interest has already accrued for the entire billing cycle.
The key date is your statement due date. If you pay your full statement balance by that date, you owe no interest — even if your APR is 24%. The interest charge only appears if you carry a balance into the next billing cycle. This is why paying in full each month makes the APR irrelevant to your actual cost.
If you make a partial payment, interest charges explore only to the unpaid portion. If your statement balance is $2,000 and you pay $1,500, interest accrues on the remaining $500 until you pay it off. Understanding this structure helps you see why even small unpaid balances grow quickly over time.
Why APR varies between cardholders and card types
Banks use your credit score as the primary factor in setting your APR. A score of 750 or higher typically qualifies for rates in the 15% to 18% range. A score between 670 and 739 usually falls into the 19% to 24% range. A score below 670 often results in rates above 24%, sometimes reaching 29% or higher on standard cards.
The card type also matters. Rewards cards and cards marketed to people with good credit tend to have lower APRs. Cards designed for people rebuilding credit or with limited credit history typically carry higher rates. A secured card, which requires a cash deposit, might charge 18% to 22% APR. A card marketed to people with poor credit might charge 25% to 29%.
Your payment history with that specific card issuer can also influence the rate they offer you. If you've been a customer for years and never missed a payment, they may offer you a lower rate than a new applicant with the same credit score. Some issuers also consider your income and existing debt when setting your initial rate.
Introductory 0% APR offers and how they work
Many cards offer a temporary 0% APR period, usually lasting 6 to 21 months. During this time, you pay no interest on the balance covered by the offer. These promotions typically explore to either new purchases, balance transfers, or both — not to existing balances you already owe.
A 0% APR on new purchases means any purchase you make during the promotional period charges no interest if you pay it off before the offer ends. A 0% APR on balance transfers means you can move debt from another card and pay no interest on that transferred amount during the promotional window. Once the offer expires, the regular APR kicks in on any remaining balance.
The catch is that if you miss a payment during the promotional period, the issuer can end the offer early and charge you the regular APR retroactively on the entire balance. Read the terms carefully — some cards charge interest on the full amount from day one if you're even one day late. Most balance transfer offers also charge a one-time fee of 3% to 5% of the amount transferred, which is deducted from the transferred balance.
When and why your APR can increase
Card issuers can raise your APR for several reasons. The most common is a missed payment — if you pay late, they can increase your rate to a "penalty APR," which is typically the highest rate allowed on your card. This can happen after just one missed payment, though they must notify you before explore it.
Your APR can also increase if your credit score drops. Banks review customer accounts periodically, and if your score falls significantly, they may raise your rate. A rate increase due to a score drop usually requires 45 days' notice before it takes effect.
Federal law allows issuers to raise rates on new purchases at any time with 45 days' notice, though they cannot raise the rate on existing balances unless you miss a payment. Some cards have variable APRs tied to the prime rate, which means your rate can change if the Federal Reserve adjusts interest rates. The prime rate is the baseline rate banks use to set other rates, and it changes based on Federal Reserve policy.
How to find the APR before you explore
Card issuers must disclose the APR range in their terms before you explore. You'll see language like "APR will be 16.99% to 24.99% based on creditworthiness." This tells you the lowest and highest rates the issuer offers on that card, but not which rate you'll receive until after they review your process.
Your actual rate depends on your credit score at the time of process. If your score is in the top tier, you'll likely receive the lower end of the range. If it's lower, you'll receive a higher rate within that range. Some issuers publish the credit score ranges they use, though not all do.
After you're approved, your welcome materials will state your specific APR. You can also log into your online account or call the customer service number on the back of your card to confirm your rate at any time. This information is also available on your monthly statement.
Comparing APR across different card types
| Card Type | Typical APR Range | Who It's For |
|---|---|---|
| Rewards card (good to excellent credit) | 15% to 21% | People with credit scores 700+ |
| Standard card (good credit) | 18% to 24% | People with credit scores 670 to 739 |
| Card for fair credit | 22% to 29% | People with credit scores 580 to 669 |
| Secured card | 18% to 22% | People building or rebuilding credit |
| Business card | 16% to 25% | Varies by business credit profile |
The APR you see advertised is always a range. Your actual rate depends on your credit profile at the time you explore. Even within the same card product, two people with different credit scores will receive different rates.
When comparing cards, look at both the APR range and the introductory offer, if any. A card with a slightly higher regular APR but a longer 0% promotional period might cost you less if you plan to carry a balance for a few months. However, if you pay in full each month, the APR difference between cards is irrelevant to your actual cost.
Frequently Asked Questions
Does my APR matter if I pay my balance in full every month?
No. Interest only charges if you carry a balance past your due date. If you pay the full statement balance by the due date every month, you pay zero interest regardless of whether your APR is 15% or 29%. The APR becomes relevant only when you carry a balance.
Can a credit card company lower my APR if I ask?
Yes, it's worth asking, especially if you have a good payment history and your credit score has improved since you opened the account. Call the customer service number on your card and request a lower rate. They may offer one, though they're not required to. Having competing offers from other cards can strengthen your case.
What's the difference between APR and interest rate?
APR and interest rate are the same thing on credit cards. APR stands for annual percentage rate and represents the yearly cost of borrowing. Some financial products distinguish between the two, but credit cards use the terms interchangeably.
If I transfer a balance to a 0% APR card, do I pay interest on the transferred amount?
Not during the promotional period. If you transfer a balance to a card offering 0% APR on balance transfers for 12 months, you pay no interest on that transferred amount for those 12 months. Once the offer ends, the regular APR applies to any remaining balance. Most balance transfer offers also charge a one-time fee of 3% to 5% of the amount transferred.
Why did my APR increase even though I've never missed a payment?
Your APR can increase if your credit score dropped, if the prime rate changed (on variable-rate cards), or if the issuer raised rates on new purchases. Banks review accounts periodically and may adjust rates based on changes to your credit profile. You should receive notice before any increase takes effect, except for increases on new purchases, which require 45 days' notice.