What Is the Credit Card Monthly Payment Calculator?
This tool tells you the fixed monthly payment needed to pay off a credit card balance within a chosen number of months at a given APR. It uses the standard amortization formula — the same math behind loan and mortgage payments — so you can plan a realistic payoff schedule and see exactly how much interest you will pay along the way.
How to Use It
Enter your current card balance, the card's annual percentage rate (APR), and the number of months in which you want to be debt-free. The calculator returns the required fixed monthly payment, plus the total interest and total amount you will have paid by the end of the term.
The Formula Explained
The monthly payment is calculated as:
$$P = \frac{B \cdot r}{1 - (1 + r)^{-n}}$$
where \(B\) is the balance, \(n\) is the number of months, and \(r\) is the monthly interest rate, equal to \(\frac{\text{APR}}{1200}\) (the annual rate divided by 12, then by 100 to convert from a percentage). If the APR is 0%, the payment is simply the balance divided by the number of months.
Worked Example
Suppose you owe $5,000 at an 18% APR and want to clear it in 24 months. The monthly rate is \(r = 18 / 1200 = 0.015\). Then $$P = \frac{5000 \times 0.015}{1 - 1.015^{-24}} \approx \$249.69 \text{ per month}.$$ Over 24 months that is about $5,992.46 paid in total, of which roughly $992.46 is interest.
FAQ
Does a higher monthly payment save money? Yes. Paying off the balance faster (fewer months) reduces total interest, even though each payment is larger.
What is APR vs monthly rate? APR is the yearly rate. We divide by 12 to get the monthly rate used in the formula.
Does this assume no new charges? Yes — the calculation assumes you make no new purchases on the card during the payoff period.
