Credit Card Interest Calculator

How to Use Credit Card Interest Calculator

1. Enter your outstanding balance. This is the amount you currently owe on your credit card that will revolve to the next statement.
2. Set the monthly interest rate. The default is 3.5%, a typical Indian card rate (42% annual). Adjust it if your card’s rate differs.
3. Choose your payment mode. Select "Fixed Amount" and enter your monthly payment, or "Minimum Due %" to simulate paying only the minimum each month.
4. Click Calculate. The tool simulates month‑by‑month interest accumulation and payments, showing how many months it will take to clear the balance, total interest paid, and the total amount you will repay.

Benefits of Credit Card Interest Calculator

• Exposes the true cost of revolving credit — paying only the minimum can stretch a one‑year debt into several years and multiply the original amount.
• Shows a month‑by‑month table for the first year so you can see exactly how each payment is split between interest and principal.
• Works with both fixed payments and minimum‑due percentages, covering the two most common repayment behaviours.
• Runs entirely offline; your card balance and payment data are never stored or transmitted.

Frequently Asked Questions

Why does my credit card balance barely reduce even when I pay the minimum due?

Because most of your payment covers interest, not principal. At 3.5% monthly, a large portion of each payment goes to interest, leaving the principal almost untouched. Paying more than the minimum dramatically shortens the repayment time.

What is the interest‑free grace period on credit cards?

It is typically 20‑50 days from the transaction date, provided you pay the full statement balance by the due date. Once you pay only the minimum or carry a balance, the grace period vanishes and interest accrues from the transaction date.

Is it better to convert the balance to EMI instead of revolving?

Yes, most banks offer balance conversion at 15‑24% reducing rate, which is significantly cheaper than the 36‑42% revolving rate. The calculator shows the revolving cost so you can compare.

Is Credit Card Interest Calculator free and private?

Yes — it is 100% free, needs no sign‑up, and everything runs in your browser; your data never leaves your device.