Credit Card Payoff Calculator

See how long it takes to clear your credit card and how much interest you pay along the way. Enter your balance, APR and monthly payment, then press Calculate.

Written by TopicDrill Editorial Team·Updated June 2026

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Balance over time

How the payoff calculator works

Credit cards charge interest daily, which works out to roughly your APR divided by twelve each month. The calculator applies that interest to your balance, subtracts your payment, and repeats. Early on most of your payment fights interest, so the balance falls slowly. As the balance shrinks, more of each payment hits principal and the payoff speeds up. That is why the chart curves down gently at first and faster later.

The single biggest lever is your monthly payment. Raising it even a little shortens the timeline and cuts total interest, because every extra dollar goes straight to principal that stops accruing interest.

A quick example

A $6,000 balance at 21.5% APR with a $250 fixed monthly payment takes roughly 30 months to clear and costs about $1,400 in interest. Bump the payment to $400 a month and you are debt free in around 17 months, paying far less interest overall.

Things to keep in mind

This assumes a fixed payment and no new spending on the card. Adding new charges resets the math. For unbiased guidance on managing card debt, see the Consumer Financial Protection Bureau. You can also compare strategies with our other free calculators.

Frequently asked questions

How is credit card payoff time calculated?

Each month the card adds interest equal to the balance times the monthly rate (APR divided by 12). Your payment first covers that interest, and the rest reduces the balance. The calculator repeats this month by month until the balance reaches zero, then reports the number of months and total interest.

Why does a small payment take so long?

On a high APR card, much of a small payment goes to interest, so the balance barely moves. If your payment does not even cover the first month of interest, the balance grows and never gets paid off. Paying more than the minimum is the fastest way to break that cycle.

Should I pay more than the minimum?

Almost always yes. Minimum payments are designed to stretch repayment over many years, which maximizes interest. Even a modest fixed extra amount each month can cut years off the payoff and save hundreds or thousands in interest.

Does a balance transfer help?

A 0% introductory balance transfer can pause interest for a set period so more of each payment hits principal. Watch for transfer fees and the rate after the promo ends. Use this calculator to compare the payoff with and without the lower rate.

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