Credit Card Pay Off Calculator
See how long it takes to clear a credit-card balance — and how much faster an extra payment gets you there.
A worked example
Running this tool on current national benchmarks (Federal Reserve / Freddie Mac via FRED (St. Louis Fed)) — swap in your own numbers to see how the result moves.
- Card balance
- $6,000
- Annual interest rate (APR)
- 21%
- Monthly payment
- $250
- Extra monthly payment
- $0
2.7 years · $1,850 in interest
- Total interest$1,850
- Total paid$7,850
- Payoff time2.7 yrs
How the time to pay off changes with card balance
Holding the other inputs at the example above, here is how the result moves as card balance changes.
| Card balance | Time to pay off | Total interest |
|---|---|---|
| $2,000 | 9 months | $174 |
| $5,000 | 25 months | $1,208 |
| $8,000 | 48 months | $3,831 |
| $12,000 | 106 months | $14,409 |
The math behind it
The calculator amortizes your card balance at its APR. Each month it charges interest, applies your payment plus any extra, and reduces the balance by the remainder, repeating until the card is clear. Running it once with the extra and once without shows how many months the extra payment shaves off. If your payment does not exceed the first month's interest, the balance never falls and the calculator says so.
Assumptions & limits
- A single fixed APR is applied to the whole balance.
- Your monthly payment and any extra stay constant.
- No new purchases are added to the card during payoff.
- Interest is charged before the payment is applied each month.
- The payment must exceed the monthly interest, or the balance never clears.
Common questions
How is this different from the minimum payment calculator?
This tool assumes a fixed monthly payment that you choose and hold steady, so every dollar above interest keeps reducing principal. The minimum payment calculator instead recalculates a shrinking percentage each month, which is what drags payoff out for years. Fixing your payment is the faster, cheaper path.
Why does even a small extra payment help so much on a card?
Credit-card APRs are high, so interest eats a big share of each payment. Extra money skips interest and hits principal directly, shrinking next month's interest and freeing more of your regular payment for principal. On high-APR debt that compounding effect turns a modest extra into months saved and real interest avoided.
What happens if my payment only covers the interest?
The balance never goes down and the card never clears — the calculator returns an infinite payoff and tells you the minimum needed to make progress. You must pay more than the monthly interest charge before any of your payment reaches principal.