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Interest Cost Calculator
See exactly how much credit card interest is costing you every day, month, and year.
Your Balance & Rate
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Interest Breakdown
Enter your balance and APR to see the interest breakdown.
Understanding Credit Card Interest
Credit card companies charge interest on any balance you carry past your due date. The APR (Annual Percentage Rate) is divided by 365 to get the daily rate, which is applied to your balance every day.
Why it adds up fast: On a $5,000 balance at 22.99% APR, you're paying over $3 per day in interest — that's roughly $95/month just in interest charges.
How to avoid it: Pay your full statement balance by the due date each month. Most cards offer a grace period where no interest is charged if you pay in full.