APR Calculator

Enter your balance, rate, and payment. See the real cost of carrying that balance — and whether a balance transfer actually saves you money.

"Most people paying minimum payments don't realize they're funding their card issuer's next building. This calculator shows you exactly what that building costs." — Claire

Your Current Situation

Set to 0 to model payoff with no new spending
Quick scenarios
Minimum pay
Current payment
Double minimum
$300/month
$500/month
Your Results
Total Interest
Months to Pay Off
Total Paid
Interest / Month (now)
Interest % of Total
Payoff Date
Payment breakdown: interest vs principal
InterestPrincipal
Payment Strategy Comparison
Strategy Monthly Months Total Interest Total Paid
Balance Transfer Calculator

Would a 0% intro APR balance transfer card save you money? Enter the offer details below.

Claire's Verdict
This tool uses standard amortization math. Results are estimates — actual interest depends on your card's daily periodic rate and billing cycle. Not financial advice. Verify payoff terms with your card issuer.

AFFILIATE DISCLOSURE: Some links on this page are affiliate links. We may earn a commission at no extra cost to you. We only link products we evaluate directly.
FINANCIAL DISCLAIMER: This content is for informational purposes only and is not financial advice. Credit card terms, rates, and offers change frequently. Verify all details with the card issuer before applying.
Page updated June 2026