Credit Card Payoff Calculator

How to use the credit card payoff calculator

Enter your current balance, the card's APR, and the fixed monthly payment you plan to make. The large readout shows how many months it will take to reach a zero balance, and the cells below break out the total you will pay and the total interest. The note under the readout converts the months into years so the timeline is easy to picture.

Try raising the monthly payment to see how quickly the payoff time and total interest fall. If your payment is too small to cover the first month's interest, the calculator warns you that the balance will never reduce. Use the export buttons to save the summary or copy a link that reopens the calculator with your exact numbers.

How it works and what the number means

Credit cards charge compounding interest on the balance you carry. Each month the card adds interest at your APR divided by twelve, then your payment is applied — first to that interest, and only what is left over reduces the principal. The calculator repeats this month by month until the balance reaches zero, counting the months and summing the interest.

Because interest is charged on the remaining balance, paying more than the monthly interest is what actually shrinks your debt. A higher payment means fewer months and far less total interest, while a low payment can stretch the payoff for years. If a fixed payment never even covers the monthly interest, the balance stays flat or grows — which is why increasing your payment is the most powerful move you can make.