किश्त कैलकुलेटर
The detailed guide below is currently available in English.
Two ways to plan a loan
Most borrowers start from a term: "I want this paid off in fifteen years — what will it cost each month?" The Fixed Term tab answers that with the standard amortization formula, which spreads principal and interest evenly across every payment.
The Fixed Monthly Payment Amount tab flips the question: given an amount you can afford each month, how long until the balance reaches zero? The answer comes from inverting the same formula, N = −ln(1 − rP/M) / ln(1 + r), where r is the monthly rate, P the loan amount, and M your payment.
The minimum-payment trap
If your payment does not exceed the interest accrued in the first month (P × r), the balance never decreases and the loan lasts forever. The calculator warns you when that happens. Close to that threshold, payoff takes extremely long and total interest explodes — which is exactly how minimum credit-card payments keep balances alive for decades.
अक्सर पूछे जाने वाले प्रश्न
Why does my last payment differ slightly?
The formula produces an exact uniform payment mathematically, but lenders often round to cents and adjust the final payment by a few dollars. The differences are trivial.
Can I use this for a credit card?
Yes — the Fixed Monthly Payment Amount tab is often used that way. Enter your balance, the card’s APR, and the payment you plan to make each month to see a realistic payoff time.
Does the payoff time include extra payments?
Just enter the higher amount as your monthly payment. The calculator will show the shorter payoff time and lower total interest automatically.