Credit Card Payoff Calculator
See how long it takes to clear a card balance and the interest cost.
Updates as you type.
How a Credit Card Payoff Calculator Works
A credit card payoff calculator tells you how long it will take to become debt-free if you pay a fixed amount every month, and how much interest you will pay along the way. You enter three things: your current outstanding balance, the annual percentage rate (APR), and the fixed monthly payment you intend to make.
Each month, interest is added to your balance and your payment is subtracted. Because credit card APRs in India are typically 36% to 48% per year, the interest portion can be brutal. The calculator simply repeats this month-by-month until the balance reaches zero, then reports the number of months and the total interest paid.
The key insight is that the higher your fixed monthly payment relative to the balance, the faster you escape and the less interest you waste. Even a small increase in the monthly payment can dramatically shorten the payoff period.
The Formula Behind the Months to Payoff
The number of months n needed to clear a balance is calculated using the loan amortisation formula, rearranged to solve for time:
n = −log(1 − (r × B) / P) / log(1 + r)
Here B is the outstanding balance, P is the fixed monthly payment, and r is the monthly interest rate (APR divided by 12, expressed as a decimal). One critical condition: your monthly payment P must be larger than the monthly interest charge (r × B), otherwise the balance never reduces and the debt grows forever.
For a 36% APR, the monthly rate r is 0.36 / 12 = 0.03, or 3% per month. This monthly compounding is why credit card debt is so much more expensive than a typical home or car loan.
A Worked Example
Imagine you owe ₹1,00,000 on your credit card at a 36% APR (3% per month), and you decide to pay a fixed ₹5,000 every month.
Plugging into the formula: r = 0.03, B = ₹1,00,000, P = ₹5,000. This works out to roughly 27 months to clear the balance, during which you pay about ₹35,000 in interest on top of the original ₹1,00,000.
Now increase the payment to ₹8,000 per month. The balance clears in about 15 months with only around ₹17,000 in interest. By paying ₹3,000 more each month, you save roughly ₹18,000 in interest and become debt-free almost a year sooner. This is the power of paying more than the bare minimum.
The Minimum-Payment Trap
Credit card bills show a tempting 'minimum amount due', usually just 5% of the outstanding balance. Paying only this minimum is one of the most expensive financial mistakes you can make.
Because the minimum shrinks as your balance shrinks, the amount going toward the actual principal becomes tiny while interest keeps compounding at 3% or more per month. A ₹1,00,000 balance paid at only the 5% minimum can take well over a decade to clear and cost more in interest than the original purchase.
The safer strategy is to always pay the full statement balance before the due date so you pay zero interest. If that is not possible, pay a fixed high amount every month rather than the declining minimum, and avoid making fresh purchases on the card until the debt is cleared. Use this calculator to set a target monthly payment and a realistic debt-free date.
Frequently Asked Questions
The minimum due is usually around 5% of your balance, and most of it goes toward interest rather than principal. At a 36-48% APR, the balance barely moves, so a debt can drag on for many years and end up costing more in interest than the original amount you spent.
Most Indian credit cards charge between 36% and 48% per year on revolving balances, which works out to roughly 3% to 4% per month. This is far higher than home loans (around 8-9%) or personal loans (around 11-24%), making credit card debt the most expensive common form of borrowing.
Pay a fixed amount that is well above the minimum due, stop making new purchases on the card, and consider directing any bonus or savings toward the balance. If you hold multiple cards, clear the one with the highest APR first while paying minimums on the rest.
If your payment is less than the monthly interest charged, the balance actually grows instead of shrinking. The payoff calculator will flag this, because mathematically the debt can never be cleared at that payment level. You must pay more than the interest accruing each month.
Yes. Lowering your outstanding balance reduces your credit utilisation ratio, which is a major factor in your CIBIL score. Paying bills in full and on time consistently is one of the most effective ways to build a strong credit history.
A balance transfer to a card offering a lower or zero introductory rate can save significant interest if you clear the balance during the promotional window. Watch for transfer fees and the rate that applies after the promo period, and avoid using the freed-up limit for new spending.