An EMI is the regular monthly payment you make towards a loan under a standard reducing-balance repayment method. Each payment normally contains two parts: interest for that month and an amount that reduces the loan balance.
EMI formula
EMI = P × R × (1 + R)N ÷ ((1 + R)N − 1)
Here is what each letter means:
- P is the amount you borrow.
- R is the monthly interest rate, written as a decimal.
- N is the total number of monthly payments.
How the monthly rate is found
Lenders usually quote interest as a yearly percentage. The calculator converts that yearly rate into a monthly rate before using the EMI formula. For example, a 10% yearly rate becomes 10 ÷ 12 ÷ 100, which is about 0.008333 per month.
A simple example
Suppose you borrow ₹10,00,000 at 10% per year for 5 years. The loan has 60 monthly payments. The calculator uses the ₹10,00,000 principal, converts 10% into a monthly rate, and applies the formula across those 60 payments. The resulting EMI is about ₹21,247 per month.
Your EMI is not simply the loan amount divided by the number of months because interest is charged on the remaining balance. Early payments usually contain a larger interest portion because the outstanding balance is still high. As the balance falls, the interest part normally falls too.
Why tenure matters
A longer tenure spreads repayment over more months, which can reduce the monthly EMI. However, interest has more time to build up, so total interest can be higher. A shorter tenure normally means a higher monthly payment but a shorter repayment period.
What extra payments do
An extra monthly payment is an amount you choose to pay above the regular payment. In this calculator, that extra amount is applied towards reducing the outstanding balance. A one-time prepayment works in a similar way, but it is applied in the month you select. Reducing the balance earlier can reduce future interest because future interest is calculated on a smaller outstanding amount.
Processing fee
A processing fee is a separate cost charged by a lender or financial institution. It does not change the standard EMI formula itself. This calculator adds the amount you enter to the calculated loan cost so you can see the cost more completely. Actual lender fees, taxes and other charges can differ.
What the charts show
The payment breakdown compares the calculated principal with the interest paid over the repayment period. The loan balance chart shows how the outstanding balance is expected to fall as payments are made. The year-wise table groups the monthly schedule into easier yearly figures, while the full amortization table lets you inspect each month.
The calculator is here to help you understand the numbers before you make a borrowing decision. Your lender's actual EMI, fees, rate, repayment rules and prepayment conditions can be different, so use the lender's final offer for the actual loan commitment.