EMI Calculator
Calculate your monthly EMI, total interest, and full loan repayment schedule using the same reducing-balance method banks use for standard fixed-rate loans.
This tool provides estimates for educational purposes only and does not constitute financial advice. See our Disclaimer.
What is EMI?
EMI (Equated Monthly Installment) is the fixed amount paid every month to repay a loan, consisting of both principal and interest. It's the standard repayment structure for home loans, car loans, and personal loans.
The formula
EMI = [P × r × (1 + r)ⁿ] ÷ [(1 + r)ⁿ − 1]
Where P is the loan principal, r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the number of monthly installments.
Why early EMIs are mostly interest
Interest is calculated on the outstanding principal for that month. Since the balance is highest at the start of the loan, interest makes up a larger share of your earliest payments — even though the EMI amount itself never changes.
Worked example
A loan of 10,00,000 at 9% annual interest over 5 years (60 months) has a monthly rate of 9 ÷ 12 ÷ 100 = 0.0075. Applying the formula gives an EMI of roughly 20,758 per month, with total interest of about 2,45,500 over the full tenure.
Is EMI prepayment beneficial?
Prepaying early reduces the outstanding principal faster, which lowers the total interest charged over the remaining tenure — particularly valuable in the first third of a long loan, when the balance (and therefore the interest portion) is still high.
Method and sources
EMI uses the standard reducing-balance formula shown above: interest is charged each month on the outstanding balance, with the monthly rate taken as the annual rate ÷ 12 ÷ 100, and a 0% rate is handled as the loan amount ÷ the number of months. The results and the repayment schedule were checked against an independent calculation (a search for the monthly payment that brings the balance to exactly zero) for several loan sizes, rates and tenures, and the worked example above matches. A lender's own figures can differ because of rounding, fees, insurance or a floating rate.
How to use this calculator
Enter the loan amount, the annual interest rate your lender has quoted, and the tenure (in years or months). If your loan has a processing fee — common with Indian banks and NBFCs, typically 0.5% to 2% of the loan amount — enter that percentage too, so the total cost reflects it rather than just the interest. Press Calculate to see your monthly EMI, total interest, total payment including the fee, and the full month-by-month schedule.
What the processing fee changes
The processing fee itself doesn't change your monthly EMI amount — it's a separate, usually one-time charge deducted upfront or added to your total cost, not spread across the tenure. What it does change is your loan's true cost: two loans with identical EMIs can have different effective costs once you account for a 1% vs. a 2% processing fee, which is why comparing loans on EMI alone can be misleading.
Reading the amortization schedule
The month-by-month schedule shows exactly how each fixed EMI payment splits between principal and interest, and how your outstanding balance shrinks over time. Because interest is charged on the remaining balance each month (the "reducing balance" method), the principal portion of your payment grows every month even though the total EMI itself never changes — by the final few months of a long loan, almost the entire payment goes toward principal rather than interest.
Interpreting your results
The total interest figure is often the most useful number for comparing loan offers — a lower advertised rate with a longer tenure can sometimes cost more in total interest than a slightly higher rate over a shorter tenure. If the total interest is close to or exceeds the loan amount itself, that's a sign the tenure is long relative to the rate, and worth reconsidering if a shorter tenure (with a higher EMI) is affordable.
Frequently asked questions
Does the EMI amount ever change?
No, in a standard fixed-rate loan the EMI stays the same for the entire tenure. What changes month to month is the split between principal and interest within that fixed payment.
Is this calculator accurate?
It uses the same reducing-balance formula banks use for standard fixed-rate loans. Your actual EMI may differ slightly depending on the lender's rounding, fee structure, or if the loan has a floating interest rate.
Is prepaying a loan early worth it?
Usually yes for reducing total interest, since prepayment cuts the outstanding principal that future interest is calculated on. Whether it's the best use of that money also depends on prepayment charges and what returns you could get elsewhere — this calculator doesn't model prepayment scenarios directly.
How does the processing fee affect my loan?
It doesn't change your EMI amount — it's a separate, usually one-time charge, often deducted upfront from the disbursed loan amount rather than spread across your monthly payments. Include it when comparing loan offers, since a lower interest rate with a higher processing fee can end up costing more than a slightly higher rate with a lower fee.
Why does the interest-to-principal ratio change every month?
Because interest is charged only on the outstanding balance, which shrinks a little more with every payment. Early in the loan, when the balance is largest, interest takes up the biggest share of your EMI; by the final months, most of the same fixed payment goes toward principal instead.