How long until that credit card is actually paid off? This free credit card payoff calculator simulates your balance month by month, showing exactly how many months and how much interest a given payment will cost you.
This is an estimate assuming no new charges are added to the card and your rate stays constant.
How Credit Card Payoff Calculator Works
Paying off a credit card is a race between your fixed monthly payment and the interest that accrues on whatever balance is left each month. The credit card payoff calculator works out how many months that race takes by applying your card’s interest rate to the shrinking balance one month at a time.
Formula: Months to Payoff = −ln(1 − (i × B) ÷ A) ÷ ln(1 + i), where i = APR ÷ 12 ÷ 100. Each month, Interest = Balance × i, and that interest is added to the balance before the payment is subtracted, so Total Interest is the sum of every month’s interest charge.
- B — current balance on the card
- APR — the card’s annual percentage rate
- A — the fixed monthly payment you plan to make
- i — the monthly interest rate, APR ÷ 12 ÷ 100
Example Scenarios
| Balance | APR | Monthly Payment | Months to Payoff |
|---|---|---|---|
| $4,500 | 22% | $200 | ≈29 |
| $8,000 | 18% | $300 | ≈34 |
| $2,000 | 24% | $150 | ≈16 |
| $10,000 | 15% | $400 | ≈30 |
| $1,500 | 20% | $100 | ≈17 |
Reading Your Credit Card Payoff Calculator Results
The most useful thing a credit card payoff calculator shows is how sharply total interest falls when the monthly payment rises. Try your current payment, then add a modest amount, and compare the months and interest side by side.
- Use the APR from your latest statement. Promotional rates end, and a credit card payoff calculator fed an expired 0% rate will understate the cost.
- Stop adding new purchases while you pay the balance down, or the timeline no longer applies.
- Check that your payment covers each month’s interest. If it does not, the balance never shrinks, which is a sign to raise the payment or seek help.
A credit card payoff calculator assumes a fixed payment and a steady APR, while real cards may add late fees or change rates. Rerun the credit card payoff calculator whenever your rate or budget changes. If you carry several cards, a balance transfer or consolidation loan might lower the rate, but compare the fees first. The annual percentage rate article on Wikipedia explains how the APR you enter in a credit card payoff calculator is defined.
Credit Card Payoff Calculator FAQ
What happens if my monthly payment barely covers the interest charge?
If your payment is only slightly larger than the interest accruing each month, the balance shrinks extremely slowly and the payoff timeline stretches out for years. If the payment doesn’t exceed the interest charge at all, the balance never actually goes down.Does this calculator assume my APR stays fixed the whole time?
Yes. It projects payoff assuming a constant interest rate and no new charges added to the card. A rate change, a promotional period ending, or new purchases will all change the real payoff timeline.How much faster would I pay off my card if I increased my monthly payment?
Raising the monthly payment reduces both the number of months and the total interest, because more of each payment goes toward principal instead of interest — try entering a higher payment amount to see the new totals side by side.Why does the total interest figure matter if I only care about the payoff date?
Total interest shows the real cost of carrying the balance — two payment plans can reach zero around the same time but charge very different amounts of interest depending on the payment size and rate.Does this calculator handle promotional 0% APR balance transfers?
Not directly — enter the rate that applies for the period you’re calculating. If a promotional rate expires partway through your payoff, run the calculator again using the remaining balance and the new APR once the promo ends.What if I make extra one-time payments on top of my regular monthly payment?
This calculator models a single fixed monthly payment only. To account for an extra lump-sum payment, subtract it from your current balance first, then run the calculator again with the reduced starting balance.Related Calculators
If you’re tackling more than one card, the debt snowball calculator can help you decide which balance to attack first, while the debt consolidation loan calculator shows whether rolling everything into one lower-rate loan would save money. It’s also worth checking your debt-to-income ratio to see how this balance fits into your overall finances.