Our Free Credit Card Payment Calculator

Use our free credit card calculator to estimate how long it will take to pay off your credit card debt and how much interest you will pay.
Comparing the minimum payment versus an overpayment.
Simply enter a credit card balance, your APR% and what you are currently paying.

How to Use This Credit Card Repayment Calculator

This calculator helps you compare how long it will take to clear your credit card balance based on your chosen monthly payment, and how much interest you’ll save compared to only paying the minimum.

To use it:
1. Enter your current credit card balance.
2. Enter your card’s APR (interest rate).
3. Enter the monthly payment you plan to make.
The calculator will show:
How many months it will take to clear your balance
Total interest you’ll pay
How long it would take if you only paid the minimum
Total interest you’d pay with minimum payments
Use this to see the difference between clearing your balance quickly and letting it drag on with minimum repayments.

How These Calculations Are Made

To keep things simple and consistent, this calculator uses standard UK credit card assumptions:
Your Chosen Monthly Payment
This is treated as a fixed monthly payment that stays the same until your balance reaches £0.
Minimum Repayment Calculation
Minimum repayments are estimated using a typical UK structure:
Presume 3% of the balance + interest (this is just a typical figure)
Minimum payments decrease every month as the balance reduces, which is why the total repayment time becomes extremely long
Interest Calculations
Interest is calculated monthly using your APR and is added before each payment.
The calculator assumes:
No further spending on the card
No fees or charges
APR stays the same
Payments are made on time every month
These assumptions allow for clear, comparable results.

Disclaimer

This calculator is for information purposes only and should not be taken as financial advice.
The results are estimates based on typical credit card repayment rules and the information you enter.
Actual repayment times and interest costs may differ depending on your lender’s terms, fees, minimum payment rules, changes to your APR, or any additional spending on the card.
Please use this as a rough guide only, and speak to your credit provider or a qualified financial adviser if you need personalised guidance.