Credit Card Interest Calculator

What is Credit Card Interest Calculator?

The Credit Card Calculator shows the true cost of revolving credit card debt. It calculates monthly interest, compares minimum-only payments vs fixed payments, and shows how long it takes to become debt-free with each approach.

How to Calculate Credit Card Interest

1. Enter your current credit card outstanding balance
2. Enter the annual interest rate (APR) from your credit card statement
3. Enter your planned monthly payment amount
4. Click Calculate to see payoff timeline, total interest, and minimum payment comparison

How Credit Card Interest Calculator is Calculated

Monthly Interest = Outstanding Balance × APR / 12 / 100. Minimum payment is typically 5% of outstanding or ₹200 (whichever is higher). Interest compounds monthly on the unpaid balance.

Worked Example

₹1,00,000 balance at 42% APR, minimum payment only: It takes approximately 36 months to pay off, with total interest of ₹52,000+. Paying ₹10,000/month instead: paid off in 12 months with ₹23,000 interest.

Common Use Cases

• Understanding true cost of credit card debt
• Planning debt payoff strategy
• Comparing minimum payment vs fixed payment
• Deciding on EMI conversion for large purchases

Common Mistakes to Avoid

• Paying only the minimum amount — at 42% APR, paying minimum only on ₹1 lakh can cost ₹50,000+ in interest over 3 years.
• Not knowing your APR — credit card interest rates in India range from 24% to 48% per annum, among the highest lending rates.
• Making new purchases while carrying a balance — you lose the interest-free period on all transactions when you carry forward a balance.
• Converting to EMI without checking the rate — some credit card EMI conversions charge 12–18% vs the standard 42% revolving rate, which is a better deal.

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