Credit Cards
How Credit Card Interest Works
Understand interest, outstanding balances and finance charges.
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Get an estimated repayment plan
Understand Your Credit Card Debt
Enter your outstanding balance and payment details to compare paying the full amount, paying only the minimum, or making a larger custom payment.
SIMPLE PROCESS
How to Use the Credit Card Interest Calculator
Understand how interest accumulates and calculate potential savings in four simple steps.
01
Enter Balance
Input your total current credit card unpaid balance and interest rate.
02
Set Payments
Enter the minimum monthly payment required and your custom payment plan.
03
Select Plan
Choose between paying in full, paying minimum, or paying your custom amount.
04
Analyze Savings
Review total interest savings, GST reductions, and faster payoff timelines.
UNDERSTANDING INTEREST
How Is Credit Card Interest Calculated?
Credit card interest is generally calculated by applying the monthly interest rate to your unpaid balance carried over from month to month. In addition, 18% GST applies to all finance charges and interest accrued.
Monthly Interest = Balance × (Annual Interest Rate / 12 / 100)
In addition, GST is charged on the monthly accrued interest amount.
Total Monthly Interest Cost = Monthly Interest + GST on Interest
Finally, payments are applied to reduce the total balance including accrued interest and taxes.
Principal Paid = Monthly Payment − Monthly Interest − GST on Interest
Example
Suppose you carry an outstanding balance of ₹50,000 at an annual interest rate of 36% (3% per month), paying a custom payment of ₹5,000 monthly vs minimum ₹2,500.
Outstanding Balance
₹50,000
Annual Interest Rate
36% (3%/mo)
Minimum Monthly Payment
₹2,500
Custom Monthly Payment
₹5,000
Estimated Interest Saved
Significant Savings
Why Paying Extra Saves Money
Paying more than the minimum monthly payment reduces the principal balance faster. This reduces future interest accruals and GST, shortening the total repayment time significantly.
Repayment Advantage
Faster Payoff
Increasing monthly payment reduces total interest and debt duration.
FREQUENTLY ASKED QUESTIONS
Credit Card Interest Calculator FAQs
If you can comfortably pay the full amount due, doing so helps avoid carrying an outstanding balance and incurring finance charges.
A minimum payment reduces the principal balance slowly while interest and 18% GST continue to accrue, lengthening repayment time and increasing total costs.
The calculator compares the estimated total interest under the minimum-payment scenario with the estimated total interest under your custom-payment scenario.
Yes, a standard 18% GST applies to all credit card interest and finance charges billed by card issuers in India.
Actual card statements calculate finance charges using daily average balances, transaction dates, and statement billing cycles.
New purchases increase the outstanding balance, requiring higher monthly payments or longer repayment duration to clear the debt.
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FINJUNGLE GUIDES
Credit Card & Finance Guides
Learn how credit cards, EMI and personal finance work.
Credit Card Tips
Minimum Payment Explained
Learn why paying only the minimum can make repayment take longer.
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Personal Finance
Ways to Reduce Credit Card Interest
Practical ways to manage outstanding balances and reduce borrowing costs.
Read More →Disclaimer: This calculator is provided for informational and educational purposes only. Results are estimates and may differ from the amount actually charged by a credit card issuer. Interest calculation methods, processing fees, taxes, rounding and other charges may vary between issuers. Please verify the applicable terms with your card issuer before making a financial decision.