Credit Card Payoff Calculator: Time & Interest
Credit card debt is the most expensive money most people borrow. This free calculator shows exactly how many months it takes to clear your balance at your current payment, how much interest that costs, and how much faster (and cheaper) it gets if you pay just a little more each month.
Credit Card Payoff Calculator
How to Use This Calculator
Enter your current card balance, the card's APR (you'll find it on your statement), and the fixed amount you plan to pay each month. Click Calculate.
The tool shows the month and year you'll be debt free, the total interest you'll pay along the way, and a comparison: how much longer it would take if you only paid a 3% minimum, and how much sooner you'd be done by paying $50 more than planned. Try different payment amounts — even small increases move the date by years.
The Formula
The payoff time follows from the balance equation: n = −ln(1 − B × r ÷ P) ÷ ln(1 + r), where B is the balance, r the monthly interest rate (APR ÷ 12) and P your monthly payment. If your payment is smaller than one month's interest, the balance grows forever and the loan never pays off.
Worked example: a $5,000 balance at 22% APR with a $250 payment. Monthly rate r = 0.01833. The formula gives n ≈ 25.1 months. Total paid = 25.1 × $250 ≈ $6,285, so interest costs about $1,285.
Tips
Stop using the card while paying it down. New charges raise your average daily balance every single day, which quietly cancels out your payments.
Automate a fixed payment above the minimum on payday. Fixed payments beat "whatever's left at the end of the month" every time.
Apply every windfall — tax refunds, bonuses, gifts — to the balance. A single $500 extra payment on a $5,000 balance at 22% cuts roughly 2 months and about $100 of interest.
Frequently Asked Questions
How is credit card interest calculated?
Credit card issuers take your annual percentage rate (APR), divide it by 365 to get a daily rate, and multiply that by your average daily balance. The interest is added to your balance at the end of each billing cycle. Because it compounds daily, even small balances grow noticeably if you only pay the minimum each month.
What happens if I only pay the minimum payment?
The minimum payment — typically 1% to 3% of your balance — mostly covers interest, so the balance shrinks very slowly. A $5,000 balance at 22% APR with a 3% minimum takes about 19 years to pay off and racks up roughly $6,700 in interest. Paying just $50 more than the minimum every month can cut that to under 4 years.
What is the avalanche method of paying off credit cards?
With the avalanche method you make minimum payments on every card, then put all extra money toward the card with the highest APR. Mathematically it saves the most interest. The snowball method — paying the smallest balance first — wins on psychology instead. Either works; what matters is sticking with one.
Should I do a balance transfer to a 0% APR card?
A 0% balance transfer can save real money, but two numbers decide whether it's worth it: the transfer fee (usually 3% to 5% upfront) and how fast you can repay within the promotional window (often 12 to 18 months). If you can clear the balance before the 0% period ends, it's usually a good deal; if not, the card's regular APR applies to the remainder.
How can I pay off my credit card faster?
Pick a fixed amount above the minimum and automate it. Every extra dollar goes directly to the balance, and because interest is charged on a smaller balance each month, the effect snowballs. Pausing new charges, using the avalanche method, and putting windfalls (tax refunds, bonuses) toward the balance all shorten the timeline dramatically.