Credit Card Interest Calculator
See how long paying only the minimum due takes to clear a credit card bill — and how much interest it costs.
Result
How to use
- 1
Enter your card balance, the monthly interest rate and the minimum due rule.
- 2
See how many months it takes to clear the bill by paying only the minimum, and the total interest.
- 3
Compare with paying a fixed amount every month.
Questions
Why is paying only the minimum due a trap?
Interest is charged on the whole unpaid balance at about 3.5–3.75% a month, plus 18% GST on that interest, so a 5% minimum due barely reduces what you owe. A ₹1 lakh bill can take decades to clear and cost several times the original amount in interest.
Do I lose the interest-free period?
Yes. If you don't pay the full bill by the due date, most cards charge interest on every purchase from the date of the transaction, and new purchases get no interest-free period until the balance is fully cleared.
How can I get out of card debt faster?
Pay as much above the minimum as you can, convert the balance into an EMI plan, or take a cheaper personal loan to close it. Avoid new card spending until the balance is zero.
About this Credit Card Interest tool
Credit Card Interest Calculator — See how long paying only the minimum due takes to clear a credit card bill — and how much interest it costs. It is one of 200 free tools on namasivayam.in, made by software engineer Namasivayam Vadivelan for everyday use in India.
Everything is calculated instantly in your browser: nothing you type or upload is sent to any server, there is no sign-up, and it works on mobile and desktop. Enter your card balance, the monthly interest rate and the minimum due rule.
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Results are estimates to help you plan. They are not financial, tax or medical advice.