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Credit Card Interest Calculator

See what carrying a balance really costs. Enter your balance and APR and get the interest you're charged each day, month, and year — then open the full payoff calculator to plan how fast you can clear it.

Your card

$
%
Interest per month
$91.67
if the balance sits unpaid
Interest per year
$1,100.00

The numbers

Interest per day$3.01
Free · part of the Credit Card Payoff Calculator toolkit

How it's calculated

Our methodology & 2026 data sources →

Frequently asked questions

How is credit card interest charged?
Most cards calculate interest daily on your average balance, then add it monthly. This tool shows the per-day, per-month, and per-year cost so you can see the impact.
How do I stop paying this?
Pay more than the minimum, or move the balance to a 0% offer. The Credit Card Payoff and Balance Transfer calculators show how much faster and cheaper that is.

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