See this cycle’s estimated interest, then test monthly payments, payoff dates, extra-payment savings, and average daily balance without leaving the calculator.
This estimates interest on a carried balance. If you retain a purchase grace period and pay the statement balance in full by the due date, purchase interest may be $0.
Issuer calculations can differ because of transaction posting times, separate APR buckets, grace periods, fees, 360/365-day conventions, and how interest is posted. Use your card agreement and statement for the official amount.
Many issuers base purchase interest on the average of the balance carried on each day of the billing cycle. A single closing balance is useful for a quick estimate, but the average daily balance can be more representative when purchases and payments happen during the month.
The calculator divides the APR by the selected day-count basis. With a 24% APR and a 365-day basis, the daily periodic rate is about 0.06575%.
Real cards can apply different APRs to purchases, cash advances and balance transfers, and can use issuer-specific posting, compounding, fees and grace-period rules. This tool is a planning model, not a statement replica.
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connects debt payoff, credit-card cost, loan comparison, APR/APY, effective-rate, weighted-rate, and hypothetical consolidation calculations.
Results are deterministic browser-local math from the values you enter. They are useful for scenario comparison, but they are not a lender quote, approval decision, investment forecast, credit recommendation, or substitute for an account agreement.
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