Credit Card Payoff Calculator
See exactly how long it takes to pay off your credit card and how much you'll pay in interest. Compare fixed payments, minimum payments, or target a specific payoff date.
How the Credit Card Payoff Calculator Works
Credit card debt is brutal because the interest compounds monthly on whatever balance remains, and the minimum payment most issuers ask for barely makes a dent in the principal. This credit card payoff calculator answers two questions: how long will it take to pay off your card, and how much total interest will you actually pay? Enter your balance, APR, and monthly payment, and the math is done in real time.
The credit card APR calculator uses a simple monthly compounding model: each month, interest = balance × (APR ÷ 12), then your payment is split between interest and principal. For example, a $5,000 balance at 22% APR generates about $91.67 in interest the first month. If you pay $200/month, only $108.33 goes toward principal — and that's the first month, when your balance is highest. As the balance drops, more of each payment goes to principal, which is why the second half of a payoff feels faster than the first.
Minimum payment is the calculator setting that surprises most people. The 'modern' issuer formula (introduced by U.S. regulators after the 2009 CARD Act) requires payment to at least cover interest plus 1% of the balance, with a $25 floor. Sounds reasonable — but on a $5,000 balance at 22%, that minimum is only about $142 in month one, meaning $50 goes to principal. Paying only the minimum, that $5,000 takes 15-18+ years to pay off and costs more in interest than the original debt.
Switching to fixed payments above the minimum is the single fastest improvement you can make. Doubling your payment from $200 to $400 on a $5,000 card at 22% drops the payoff time from ~32 months to ~14 months, and cuts total interest by more than half. This is why the calculator lets you compare strategies side by side — see exactly what an extra $50 or $100 a month does to your total interest. For a deeper look at how loans amortize, see our loan calculator.
If you have multiple cards, focus on the highest-APR card first (the 'avalanche' method) — it's mathematically optimal. The 'snowball' method targets the smallest balance first; it's slightly more expensive but gives faster psychological wins. Either way, paying off credit cards typically returns 15-25% per year guaranteed (your APR), which is far better than almost any investment. Consider whether a 0% balance transfer or a personal loan at a lower rate could accelerate your payoff.