Credit Card Payoff Calculator

About this tool

The Credit Card Payoff Calculator shows how long it takes to clear a credit card balance when you pay a fixed amount each month. Enter the balance, APR, your monthly payment and any extra monthly payment; the tool returns the number of months to payoff (also in years), total interest paid, total amount paid and your combined monthly payment. Interest is charged each month at APR ÷ 12 on the remaining balance, and the final month is a smaller payment that clears what is left. If your payment does not cover the first month's interest, the tool warns you and shows the minimum needed. A what-if slider adds up to $500 a month on top, showing the new payoff time and how much interest you would save — making it clear how much a slightly higher payment is worth.

Why use it

• Shows the exact payoff time and total interest for any fixed monthly payment.

• What-if slider reveals how much time and interest an extra payment saves.

• Warns when a payment is too low to cover the monthly interest.

• Simple inputs — just balance, APR, and payment amount.

• Makes the cost of carrying a balance visible in dollars, not just a rate.

• Helps debt-counseling clients see the true cost of carrying balances.

How to use

1. Enter the current credit card balance and APR (Annual Percentage Rate).
2. Enter the monthly payment you plan to make.
3. Optionally add a regular extra payment in the Extra payment field.
4. Review months to payoff, total interest paid, total amount paid and your monthly payment.
5. Drag the what-if slider to add $10-$500 per month and see the faster payoff and interest saved.
6. Try changing the APR by 2-3% to see the impact of credit-score-driven rate differences.

When it helps

• Planning a debt payoff strategy to minimize total interest paid.
• Deciding how much extra to pay each month to clear a balance sooner.
• Testing different monthly payments to find one that fits your budget and timeline.
• Understanding the real cost of carrying a balance at high APR.
• Before signing up for a balance-transfer offer, to compare net savings.
• Building a household debt-elimination plan during budget season.

Examples

Tips

• Always pay more than the minimum — even an extra $25/month can shave years off your payoff timeline.
• Stop using the card while paying it off; new charges reset the math and extend your timeline indefinitely.
• Check your APR statement carefully — many cards have different rates for purchases, balance transfers, and cash advances.
• If you have multiple cards, target the highest APR first (avalanche method) to minimize total interest paid.
• Balance transfer cards (0% intro APR for 12-21 months) can dramatically reduce payoff time if you can pay it off before the intro period ends.
• Set up autopay for at least the minimum to avoid late fees, then make extra manual payments as cash flow allows.
• Recalculate every 3 months — your remaining balance and possibly your APR can change.

Frequently Asked Questions

Glossary

APR (Annual Percentage Rate)

The yearly interest rate charged on the unpaid balance. Divide by 12 for the monthly rate, or by 365 for the daily periodic rate.

Minimum payment

The smallest amount your card issuer requires each month. Usually the greater of a flat fee (e.g., $25) or 1–3% of the balance.

Principal

The portion of a payment that reduces the actual debt balance, as opposed to interest charges.

Compound interest

Interest charged not only on the original principal but on accumulated interest. Credit cards typically compound daily.

Daily periodic rate

APR / 365. The amount of interest charged each day on your average daily balance.

Grace period

The time between the statement closing date and the payment due date during which no new interest accrues — only applies if the previous balance was paid in full.

Balance transfer

Moving debt from one card to another, often to take advantage of a lower introductory APR. Usually subject to a 3–5% transfer fee.

Negative amortization

When the minimum payment is less than the monthly interest charge, causing the balance to grow even while paying. Possible on some teaser-rate or deferred-payment cards.