Credit Card Payoff Calculator
Your statement shows a balance and a minimum payment. It doesn't show the part that matters: how long that balance will haunt you, and how much interest you'll feed the bank along the way. Plug in three numbers and get your honest debt-free date, the true cost of your card, and a side-by-side look at what minimum payments really do to you. Try different payments and watch the numbers move, because the difference between paying $250 and $500 a month is rarely what people expect. One habit pays the card off in years. The other barely keeps it alive.
How the credit card payoff calculator works
You give it three numbers: your balance, your APR, and the fixed amount you pay each month. Then it does the boring, honest work your statement won't. It simulates your card month by month, adding interest first, subtracting your payment second, and counting every month and every interest dollar until the balance hits zero.
That's it. No averages, no shortcuts. The simulation uses the same monthly-compounding logic lenders use, so the debt-free date it gives you is the date you'd actually get if you stopped adding new charges today. Which, let's be honest, is the part most people skip. Running the math while still swiping is like dieting between meals. It doesn't count.
Formula
In plain words: each month the bank grows your balance by one-twelfth of your APR, then your payment knocks it back down. Whatever the interest didn't eat is what actually shrinks your debt. When your payment is smaller than that month's interest, the balance grows instead. That's the treadmill. This calculator refuses to pretend otherwise and tells you straight up when your payment can't win.
The final month works the way real payoffs do: you don't overpay a full $250 on a $158 remainder. You pay exactly what's left, plus that month's interest.
Example
Say you owe $5,000 on a card at 19.99% APR and you pay $200 a month. Let's walk the first few months by hand.
Your monthly rate is 19.99% ÷ 12, about 1.6658%. Month one: $5,000 × 1.6658% = $83.29 in interest. The balance becomes $5,083.29, your $200 payment lands, and you're left at $4,883.29. You paid $200 and the debt moved $116.71. Not great, but moving.
Month two: interest on $4,883.29 is $81.35. Same $200, debt drops to $4,764.64. Month after month, the interest slice shrinks and the payment bites harder. That slow acceleration is the whole ballgame with card debt.
Run it to the end and you get 33 months to debt-free, $1,521 in total interest, and $6,521 paid overall. You can check the math: 32 full payments of $200 ($6,400) plus a final payment of about $121 covers the $5,000 principal and the $1,521 of interest. Thirty percent on top of what you borrowed. Cards are expensive money. Now you know exactly how expensive yours is.
How to read your results
Start with the debt-free date. If it's under two years, you're in workable territory. Two to four years is a grind but a clear path. Past five years, your payment is probably too small for the balance, and the interest total deserves a hard look.
Then look at total interest next to your starting balance. On the default example ($8,000 at 22%, $250 a month), interest comes to $4,158. That's more than half the original debt, paid to the bank for the privilege of borrowing slowly. Whenever interest tops 30% of what you borrowed, your next move should be one of three things: raise the payment, cut the rate, or both.
The minimum-payment comparison is the one that stings. A $250 fixed payment kills an $8,000 balance in 49 months. Minimum payments (2% of the balance, floored at $25) never finish. After 50 years and $50,862 in interest paid, you'd still owe $2,359. Minimums are a subscription to your own debt. If you're currently paying minimums, the single highest-impact change you can make is switching to any fixed amount above them and never looking back.
Practical next steps: try the "Aggressive" preset and see what an extra $250 a month buys you (20 months instead of 49, about $2,600 less in interest). Look into a 0% balance-transfer offer or a cheaper personal loan, which attacks the same balance from the rate side. And if you're juggling several cards, see our guide on which debt payoff method actually wins and our walkthrough on how long the credit card snowball takes — together they cover the order question from both sides.
Scenario comparison
Same $8,000 balance at 22% APR, three different payment habits. The gap between row one and row three is the entire argument for paying more than the minimum.
| Scenario | Months | Total interest | Total paid |
|---|---|---|---|
| Fixed $250/mo | 49 | $4,158 | $12,158 |
| Aggressive $500/mo | 20 | $1,556 | $9,556 |
| Minimum only (starts $160) | 600+ (never) | $50,862 | $56,503 |
Doubling the payment from $250 to $500 doesn't just halve the timeline (49 to 20 months). It wipes out $2,602 in interest. And the minimum row? After 50 years you'd have paid $56,503 on an $8,000 purchase and still owed money. That row is why this calculator exists.
Frequently asked questions
What if my payment doesn't even cover the monthly interest?
Why is the minimum payment so bad?
Does this account for new charges I keep making?
Should I pay off the card or keep an emergency fund first?
Would a 0% balance transfer help, and can this calculator model it?
How accurate is this compared to my actual card statement?
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Sources & methodology
Every number on this page is computed in your browser with plain JavaScript. Nothing you type is sent anywhere. The engine simulates month by month: interest accrues at APR ÷ 12, your payment is subtracted (or the exact remaining balance on the final month), and the loop repeats until the balance reaches zero. The minimum-payment comparison assumes a minimum of 2% of the balance, floored at $25, which matches common US card terms. Most issuers compound interest daily, so real statements may differ by a few dollars. Read our full methodology for details.