Credit Card Interest Calculator See Your True Cost

Calculate exactly how much interest you pay each month and year on your credit card balance — and see the total cost of carrying that debt over time at any APR.

First-Year Interest at Current Payment
$999
First-Year Interest at Current Payment
$999
Monthly Interest Charge
$90
Months to Pay Off
52
Total Interest Paid
$2,800
Diagnostic

Over the life of this loan, you pay $2,800 in interest.

That's the cost of borrowing on top of what you actually got.

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What to do next

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This is an educational estimate, not tax, legal, investment, or lending advice. Tax rules, rates, and eligibility change and depend on your full situation. Confirm with a qualified professional or the provider before acting.

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Reviewed Jun 30, 2026 · Methodology

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Credit Card Interest Calculator — See Your True Cost | SwitchWize