How to Calculate EMI on a Loan (Formula + Examples)
Before you take a home, car or personal loan, the single most useful number to know is your EMI — the fixed amount you’ll pay every month until the loan is cleared. Understanding how it’s calculated helps you compare offers, pick the right tenure, and make sure the repayment fits your budget. Let’s break it down.
What is an EMI?
EMI stands for Equated Monthly Instalment. Each month you pay the same amount, which is split between interest (the cost of borrowing) and principal (paying back what you borrowed). Early on, most of the EMI goes towards interest; as the balance falls, more of it pays down the principal.
The EMI formula
EMI is calculated with the reducing-balance formula:
EMI = P × r × (1 + r)n ÷ ((1 + r)n − 1)
Where P is the loan amount (principal), r is the monthly interest rate (the annual rate ÷ 12 ÷ 100), and n is the number of monthly instalments (years × 12).
A worked example
Say you borrow ₹10,00,000 at 9% per year for 20 years. The monthly rate is 9 ÷ 12 ÷ 100 = 0.0075, and n = 240. Plugging into the formula gives an EMI of about ₹9,000 per month. Over 20 years you’d repay roughly ₹21.6 lakh in total — so about ₹11.6 lakh is interest on top of the ₹10 lakh you borrowed.
How tenure and rate change your EMI
- Longer tenure → lower EMI, more interest. Stretching the same loan over more years reduces the monthly payment but increases the total interest significantly.
- Higher interest → higher EMI. Even a 0.5% difference in rate adds up over a long loan, so it’s worth shopping around.
- Prepayments help. Paying extra early reduces the principal, which cuts the interest you’ll pay over the life of the loan.
Calculate your EMI instantly
You don’t have to do the maths by hand. Our free EMI calculator works it out instantly — just enter the loan amount, interest rate and tenure, and it shows your monthly EMI along with the total interest and total payment. It works for home, car and personal loans alike.
Frequently asked questions
Will the calculator match my bank exactly? It’s an accurate estimate. Banks may add processing fees or insurance, or round slightly differently.
What tenure should I choose? Pick the shortest tenure whose EMI you can comfortably afford — you’ll pay far less interest overall.
Is a lower EMI always better? Not necessarily — a lower EMI usually means a longer tenure and more total interest.
This article is general information, not financial advice.