Edited by Samuel MountjoyIs Credit Card Interest Compounded Daily?
Edited by Samuel Mountjoy
Quick Answer
Credit card interest is typically compounded daily, meaning your issuer charges interest each day based on your average daily balance. Paying your full statement balance by the due date each month is the most reliable way to avoid these charges.
Credit card interest is typically compounded daily, which means your credit card issuer charges interest to your account each day based on its average daily balance.
The larger your balance grows, the more interest gets added on top and the harder it becomes to pay down what you owe. Understanding how compounding credit card interest works can help you avoid it—saving you real money.
What Is Compound Interest?
Compound interest is interest calculated on both the principal balance and any interest that has already accrued. In other words, you pay interest on your interest, which causes balances to grow faster over time.
Interest on debt can compound daily, monthly or annually. The more frequently it compounds, the faster a balance builds. For credit cards, daily compounding is the standard, which is why carrying a balance can get expensive quickly.
Be aware: Compounding isn't always a bad thing. When it applies to a savings account or an investment, more frequent compounding means you earn returns on your returns, accelerating growth over time. On a credit card, however, that same dynamic works against you.
Simple Interest vs. Compound Interest
The difference between simple and compound interest comes down to what the interest is calculated on.
With simple interest, you pay a fixed percentage of the principal balance each period and nothing more. With compound interest, each period's interest is added to the balance, and future interest is then calculated on that new, higher total.
On a credit card with daily compounding, this effect is even more pronounced. Interest accrues every single day, and your balance grows a little larger with each passing day you don't pay it off.
Best credit cards of 2026
Compare cards from our partners with intro bonuses, cash back or points offers, and annual fees as low as $0.
Offers from our partners
Citi Double Cash® Card
Intro APR:0% for 18 months on Balance Transfers
Ongoing APR:17.49% - 27.49% (Variable)
Rewards:2% (cash back)
Annual Fee:$0
Blue Cash Everyday® Card from American Express
Intro bonus:As High As $200 Cash Back. Find Out Your Offer.
Intro APR:0% on Purchases and Balance Transfers for 15 months
Ongoing APR:19.49%-28.49% Variable
Rewards:1% - 3% (cash back)
Annual Fee:$0
Wells Fargo Reflect® Card
Intro APR:0% intro APR for 21 months from account opening on purchases and qualifying balance transfers
Ongoing APR:17.49%, 23.99%, or 28.24% Variable APR
Rewards:N/A*
Annual Fee:$0
Wells Fargo Active Cash® Card
Intro bonus:$200
Intro APR:0% intro APR for 12 months from account opening on purchases and qualifying balance transfers
Ongoing APR:18.49%, 24.49%, or 28.49% Variable APR
Rewards:2% (Cash Rewards)
Annual Fee:$0
Avant® Cashback Rewards Mastercard®
Ongoing APR:29.99%*
Rewards:2% (cash back)
Annual Fee:$0*
The opensky® Secured Visa® Credit Card
Ongoing APR:23.89% Variable
Rewards:10% (cash back)
Annual Fee:$35
Blue Cash Preferred® Card from American Express
Intro bonus:As High As $300 Cash Back. Find Out Your Offer.
Intro APR:0% on Purchases and Balance Transfers for 12 months
Ongoing APR:19.49%-28.49% Variable
Rewards:1% - 6% (cash back)
Annual Fee:$0 intro annual fee for the first year, then $95.
Reflex® Platinum Mastercard®
Ongoing APR:35.90% Fixed
Rewards:N/A*
Annual Fee:$75 - $125
American Airlines AAdvantage® MileUp® Card
Intro APR:0% for 15 months on Balance Transfers
Ongoing APR:19.49% - 29.49% (Variable)
Rewards:2x (Miles per dollar)
Annual Fee:$0
Citi Strata Premier® Card
Intro bonus:60,000 Points
Ongoing APR:19.49% - 27.49% (Variable)
Rewards:1x - 10x (Points per dollar)
Annual Fee:$95
American Express® Gold Card
Intro bonus:As High As 100,000 points. Find Out Your Offer.
Ongoing APR:See Pay Over Time APR
Rewards:1x - 5x (Points per dollar)
Annual Fee:$325
Citi® / AAdvantage® Globe™ Mastercard®
Ongoing APR:19.49% - 29.49% (Variable)
Rewards:1x - 6x (Miles per dollar)
Annual Fee:$350
AT&T Points Plus® Card from Citi
Intro bonus:$200
Ongoing APR:19.49% - 27.49% (Variable)
Rewards:1x - 3x (Points per dollar)
Annual Fee:N/A
Avant® Cashback Rewards Mastercard®
Ongoing APR:35.99%*
Rewards:1% (cash back)
Annual Fee:$75 first year; then $99/year
First Progress Prestige Secured Mastercard® Cash Back Rewards
Ongoing APR:13.49% Variable
Rewards:1% - 10% (cash back)
Annual Fee:$49
First Progress Select Secured Mastercard® Cash Back Rewards
Ongoing APR:17.49% Variable
Rewards:1% - 10% (cash back)
Annual Fee:$39
Credit One Bank® Platinum Rewards Visa® Card
Ongoing APR:29.74% Variable
Rewards:1% (cash back)
Annual Fee:$39
Credit One Bank® Wander® American Express® Card with Dining, Gas & Travel Rewards
Ongoing APR:29.74% Variable
Rewards:1% - 10% (cash back)
Annual Fee:$95
Hilton Honors American Express Card
Intro bonus:100,000 Points
Ongoing APR:19.49%-28.49% Variable
Rewards:3x - 7x (Points per dollar)
Annual Fee:$0
Marriott Bonvoy Brilliant® American Express® Card
Intro bonus:100,000 Points
Ongoing APR:19.49%-28.49% Variable
Rewards:2x - 6x (Points per dollar)
Annual Fee:$650
Delta SkyMiles® Reserve American Express Card
Intro bonus:Up to 125,000 Bonus Miles
Ongoing APR:19.49%-28.49% Variable
Rewards:1x - 3x (Miles per dollar)
Annual Fee:$650
Delta SkyMiles® Gold American Express Card
Intro bonus:Up to 90,000 Bonus Miles
Ongoing APR:19.49%-28.49% Variable
Rewards:1x - 2x (Miles per dollar)
Annual Fee:$0 introductory annual fee for the first year, then $150.
Credit One Bank® Premier American Express® Unlimited Rewards Card
Ongoing APR:29.74% Variable
Rewards:1% (cash back)
Annual Fee:$0
Delta SkyMiles® Platinum American Express Card
Intro bonus:Up to 100,000 Bonus Miles
Ongoing APR:19.49%-28.49% Variable
Rewards:1x - 3x (Miles per dollar)
Annual Fee:$350
Hilton Honors American Express Surpass® Card
Intro bonus:130,000 Points
Ongoing APR:19.49%-28.49% Variable
Rewards:3x - 12x (Points per dollar)
Annual Fee:$0 introductory annual fee, then $150.
Delta SkyMiles® Blue American Express Card
Intro bonus:10,000 Miles
Ongoing APR:19.49%-28.49% Variable
Rewards:1x - 2x (Miles per dollar)
Annual Fee:$0
Marriott Bonvoy Bevy® American Express® Card
Intro bonus:85,000 Points
Ongoing APR:19.49%-28.49% Variable
Rewards:2x - 6x (Points per dollar)
Annual Fee:$250
PREMIER Bankcard® Mastercard® Credit Card
Ongoing APR:See Rates & Fees
Rewards:N/A*
Annual Fee:See Rates & Fees
Avant® Cashback Rewards Mastercard® - $500 Credit Limit
Ongoing APR:35.99%*
Rewards:1% (cash back)
Annual Fee:$125 first year; then $125.04/year ($10.42/mo)
Avant® Cashback Rewards Mastercard®
Ongoing APR:35.99%*
Rewards:1% (cash back)
Annual Fee:$75*
See all our best credit cards for 2026.
How Often Does Credit Card Interest Compound?
In most cases, credit card interest is compounded daily using a daily interest rate and your account's average daily balance.
Your daily interest rate is derived from your card's annual percentage rate (APR). To find it, divide your APR by 365—though some card issuers use 360 instead. A card with a 20% APR, for example, carries a daily rate of roughly 0.055%.
That daily rate is applied to your average daily balance each day throughout your billing cycle. Your average daily balance is calculated by adding up your balance for each day in the statement period and dividing by the number of days in that period.
Each day's accrued interest is added to your balance, which becomes the starting point for the next day's calculation. Over the course of a month, these daily charges compound into the total interest charge that appears on your statement.
Be aware: For credit cards, APR and interest rate refer to the same thing. That's not always true for installment loans like mortgages or student loans, where the APR may also factor in origination fees and other costs.
How to Calculate Interest
Calculating your monthly interest charge takes a few steps, but the math is manageable:
- Find your daily interest rate. Divide your APR by 365. For a card with a 20% APR, the daily rate is 20 / 365 = 0.0548%, or 0.000548 as a decimal.
- Calculate your average daily balance. Add up your balances for each day in the billing cycle, then divide the total by the number of days in the cycle. If your balance was $800 for 15 days and $600 for the remaining 15 days of a 30-day cycle, your average daily balance would be [($800 x 15) + ($600 x 15)] / 30 = $700.
- Multiply your average daily balance by your daily rate. Using the example above: $700 x 0.000548 = $0.3836 in interest per day.
- Multiply by the number of days in the billing cycle. $0.3836 x 30 = $11.51 in interest for the month.
Keep in mind this is a simplified calculation. Actual charges can vary depending on whether you made purchases or payments during the cycle, which affect your daily balance.
Tip: You can also use Experian's credit card payoff calculator to better understand how interest can affect your balance over time.
How Do You Avoid Interest on Credit Cards?
The most effective strategies for avoiding credit card interest are straightforward, but they require consistency. Here's what you can do:
- Pay your full statement balance every month. Credit card issuers won't charge you for accrued interest if you pay your statement balance in full by the due date. Most cards include a grace period of at least 21 days between the end of your billing cycle and your payment due date. Be sure to stick to a budget to avoid spending more than you can afford to repay.
- Use a 0% intro APR card. Some credit cards offer an introductory 0% APR period during which no interest is charged on purchases, balance transfers or both. Just make sure to pay off the balance before the promotional period ends, which is when the card's standard variable APR takes effect.
- Transfer a balance to a 0% balance transfer card. If you're carrying a balance on a high-interest card, moving it to a card with a 0% introductory APR on balance transfers lets you pay down the principal without accumulating additional interest. Balance transfer cards typically charge a fee of 3% to 5% of the transferred amount.
- Avoid cash advances. Unlike purchases, cash advances typically start accruing interest immediately with no grace period, making them one of the fastest ways to accumulate interest charges. Using your card only for purchases keeps you within the grace period structure.
- Set up autopay for your full statement balance. Scheduling automatic payments for the full statement balance each month removes the risk of accidentally carrying a balance or missing a due date.
Frequently Asked Questions
The Bottom Line
Understanding how daily compounding works is the first step toward minimizing what you pay. Even a modest balance can grow faster than expected when interest is added every day, which is why paying your full statement balance each month is the most powerful tool in your arsenal.
If you're working to reduce existing credit card debt, Experian's free credit monitoring service can help you track your progress and spot opportunities to improve your credit and qualify for lower-rate cards over time.
Don’t apply blindly
Apply for credit cards confidently with personalized offers based on your credit profile. Get started with your FICO® Score for free.
See your offers
About the author
Brianna McGurran
Brianna McGurran is a freelance journalist and writing teacher based in Brooklyn, New York. Most recently, she was a staff writer and spokesperson at the personal finance website NerdWallet, where she wrote "Ask Brianna," a financial advice column syndicated by the Associated Press.
Read more from Brianna