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Personal Finance · 7 calculators

Credit Card Calculators

Pay off credit card debt faster: payoff time, minimum payments, interest, utilisation and balance transfers.

Key credit card formulas

Credit Card PayoffMonthly interest = balance × APR ÷ 12
Credit Card Minimum PaymentMinimum = max(floor, 1–3% of balance + interest)
Credit Card InterestInterest = balance × (APR ÷ 365) × days
Credit UtilizationUtilization = total balances ÷ total limits × 100
Balance TransferSavings = interest on current card − (fee + interest on new card)
Extra PaymentExtra goes straight to principal, cutting future interest
Multiple Credit Card PayoffPay minimums on all cards; put every extra dollar on the target card

Credit Card questions

Avalanche or snowball?

Avalanche saves the most interest mathematically. Snowball clears small balances first, which some people find more motivating. The difference is often small — consistency matters most.