Calculate time and total interest to pay off credit card balances with minimum payments, fixed payments, or target payoff dates.
Choose a payoff approach for one credit card: its minimum payment, a fixed monthly amount, or a desired payoff date. The calculator turns the balance and APR into an estimated payoff time and total interest. For a target date, it determines the payment needed to finish on schedule. The common trap is treating today's minimum due as a permanent payment, although minimums can change as the balance falls. Enter financial figures, not card numbers or login details. The entered figures stay in the browser and are not uploaded.
A concrete input and expected output from the current implementation.
Input
Balance: $600; APR: 0%; payment method: fixed monthly payment; payment: $200
Expected output
Estimated payoff time: 3 months; total interest: $0.00
At 0% APR, the balance accrues no interest. Three monthly payments of $200 exactly repay the $600 balance.
For a fixed payment, the balance is advanced one billing period at a time: interest increases it, then the selected payment reduces it. Repetition stops when the remaining balance can be cleared, so the last payment may be smaller than the regular amount. Payoff time counts those periods, while total interest is the accumulated finance cost before the balance reaches zero.
In minimum-payment mode, the payment follows the minimum assumptions shown in the form rather than staying equal to a voluntary fixed payment. In target-date mode, the unknown is reversed: the tool estimates a monthly payment that repays the entered balance by the chosen date. Comparisons are meaningful only when the balance, APR, timing, and minimum-payment settings remain consistent.
No, not necessarily. This is a planning estimate based on the values and payment pattern entered. An issuer may calculate interest from daily balances, use specific statement dates and rounding, add fees, or change the APR. New purchases and missed or late payments also move the real payoff date.
Yes. Run the same starting balance and APR once with the minimum-payment option and again with a fixed amount you could sustain. Compare payoff months and total interest. The comparison is valid only if the minimum-payment settings reflect the rule you intend to model and both runs exclude the same future charges and fees.
The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
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