Credit Card Calculator – Estimate Payments and Interest
Find the monthly payment needed to clear a card within a chosen number of months.
About the Credit Card Calculator
What is the Credit Card Calculator?
A credit card calculator works out the monthly payment required to clear a balance within a target number of months, and shows the interest that costs.
Why use this calculator?
Minimum payments stretch a balance out for years. Setting a payoff target and paying the required amount is one of the fastest ways to become debt-free.
How to use it
- Enter your card balance and APR.
- Enter how many months you want to take to pay it off.
- The required monthly payment and total interest appear instantly.
Formula
Payment = balance × r / (1 − (1+r)^−n)
Assumes no new charges. Compare the required payment with your current minimum to see the gap.
Frequently Asked Questions
Why is my minimum payment so low?
Card issuers often set minimums at 1% to 3% of the balance, which maximizes interest paid over time. Paying more than the minimum clears the debt far faster.
What is a balance transfer and is it worth it?
Moving a balance to a 0% promotional card can pause interest, but watch the transfer fee (often 3% to 5%) and the rate after the promo ends.
What is a credit utilization ratio?
It is the share of your available credit that you are using. Keep it below 30%, and ideally below 10%, to protect your credit score.
Will paying off a card hurt my score?
No. Paying down balances usually helps your score by lowering utilization. Closing the account, however, can reduce your available credit.
What is the minimum payment trap?
Minimum payments are set low, so most of the payment goes to interest and the balance lingers for years. Paying more than the minimum saves substantial interest.
Should I consolidate my debts?
Consolidation can lower your interest rate and simplify payments, but it only works if you stop adding new debt. Compare the new APR and any fees first.
Is this calculator free to use?
Yes. Every calculator on this site is completely free, with no hidden fees, no subscriptions and no limits on how many times you can use it.
How accurate are the results?
We use standard, widely accepted formulas and calculate in your browser using double-precision arithmetic. Results are rounded for readability, so treat them as reliable estimates rather than a guarantee. Real-world factors can vary the true figure.
Can I add this calculator to my own website?
Yes. Open this calculator page and use the "Add to your website" box in the sidebar to copy a ready-made iframe snippet, then paste it into any HTML page.
Does it work on a phone or tablet?
Yes. The layout is fully responsive, so it works on desktops, laptops, tablets and mobile phones, and every input adapts to touch screens.