EMI Calculator
Calculate your monthly EMI payments, total interest, and view a detailed amortization schedule for your loan.
Updates as you type. For the full amortization schedule, press Calculate.
About EMI Calculator
An EMI (Equated Monthly Installment) calculator helps you determine your monthly loan payments based on the loan amount, interest rate, and loan term.
1 Enter loan details
Provide the loan amount, annual interest rate, and loan term in years.
2 View results
See your monthly EMI, total interest, and a detailed payment schedule.
Understanding EMI
EMI is a fixed payment amount made by a borrower to a lender at a specified date each calendar month. It includes both principal and interest components.
What Is an EMI and How Does It Work?
An EMI (Equated Monthly Instalment) is the fixed amount you pay your lender every month to repay a loan over an agreed period. Each EMI has two parts: a portion that goes towards the principal (the amount you borrowed) and a portion that covers the interest on the outstanding balance. The instalment stays the same throughout the tenure (unless the interest rate changes), which makes budgeting predictable for home, car and personal loans.
Most Indian loans use the reducing balance method. This means interest is charged only on the balance you still owe, not on the original loan amount. As you keep paying, the outstanding balance shrinks, so the interest part of each EMI falls while the principal part rises. This gradual shift is called amortization, and it is the reason your early payments feel interest-heavy.
The EMI Formula Explained
The standard formula used by banks and our calculator is:
EMI = P × r × (1 + r)^n / ((1 + r)^n − 1)
- P = the principal, or the loan amount you borrow.
- r = the monthly interest rate, calculated as annual rate ÷ 12 ÷ 100. So a 9% annual rate becomes 0.0075 per month.
- n = the tenure expressed in months. A 20-year home loan is 240 months.
For example, on a loan of ₹10,00,000 at 9% per year for 20 years, r = 0.0075 and n = 240. Plugging these into the formula gives an EMI of roughly ₹8,997. Over the full tenure you would repay about ₹21.6 lakh in total, of which around ₹11.6 lakh is interest. Doing this by hand is tedious, which is exactly why an EMI calculator is so handy: enter the three inputs and you instantly see the monthly payment, total interest and total repayment.
How Loan Amount, Interest Rate and Tenure Change Your EMI
Three levers decide your EMI, and understanding each helps you negotiate a loan that fits your budget.
- Loan amount (P): The EMI moves in direct proportion to how much you borrow. Borrow more and both your EMI and total interest rise. A larger down payment lowers P and shrinks the EMI.
- Interest rate (r): Even a small rate difference matters a lot over long tenures. Comparing offers and improving your credit score to secure a lower rate can save lakhs on a home loan.
- Tenure (n): A longer tenure reduces the monthly EMI because the principal is spread over more months, making it easier on cash flow. The trade-off is that you pay interest for longer, so the total interest cost goes up. A shorter tenure means a higher EMI but far less interest overall.
The smart approach is to keep the EMI affordable while choosing the shortest tenure you can comfortably manage, so you minimise total interest without straining your monthly budget.
Why the Principal-Interest Split Changes and How Prepayment Helps
Because interest is charged on the outstanding balance, your first EMIs are dominated by interest. As the balance falls, the interest component shrinks and more of each EMI chips away at the principal. In the final years of a long loan, almost the entire EMI goes towards principal. An amortization schedule shows this month-by-month breakdown so you can see exactly how your loan unwinds.
Prepayment is one of the most powerful ways to cut your loan cost. When you pay a lump sum over and above your EMI, that money goes straight to reducing the principal. Because future interest is calculated on a smaller balance, you save a disproportionate amount of interest, and the earlier in the tenure you prepay, the bigger the saving. Many borrowers ask their lender to keep the EMI the same and shorten the tenure, which maximises interest savings. As per RBI guidelines, floating-rate loans to individuals generally carry no prepayment or foreclosure charges, making prepayment especially attractive for home loans. Always confirm the terms with your lender before prepaying.
Frequently Asked Questions
EMI is calculated using the formula EMI = P × r × (1 + r)^n / ((1 + r)^n − 1), where P is the loan amount, r is the monthly interest rate (annual rate divided by 12 and by 100), and n is the tenure in months. Our EMI calculator applies this formula automatically once you enter the three values.
You usually get to choose. Keeping the same EMI and reducing the tenure saves the most interest because the loan closes sooner. Alternatively, you can keep the tenure the same and lower the EMI to ease your monthly cash flow. Either way, the prepaid amount reduces your outstanding principal.
A common rule of thumb is to keep your total EMIs within about 40% to 50% of your net monthly income. Staying on the lower side leaves room for savings, emergencies and other goals, and lenders also look at this ratio when assessing your loan eligibility.
In a reducing balance loan, interest is charged only on the outstanding principal that remains after each EMI, not on the original loan amount. As you repay, the balance falls and so does the interest portion of every instalment. Most home, car and personal loans in India use this method.
Because interest is charged on the outstanding balance, which is highest at the start of the loan. Early EMIs therefore have a large interest component and a small principal component. Over time, as the balance reduces, the split flips and more of each EMI repays the principal.
Yes. The EMI formula is the same for all reducing balance loans, so the calculator works for home, car and personal loans alike. Just enter the loan amount, the applicable interest rate and the tenure to see your monthly EMI, total interest and total repayment.