What is an EMI?
An EMI, or equated monthly instalment, is the fixed amount you pay a lender every month until a loan is repaid. Each EMI covers that month's interest plus part of the principal, and the amount is set so the last instalment clears the loan exactly.
This calculator works for any amortizing loan: home, car, personal, education or a business loan. Besides the EMI, it shows the total interest you'll pay, what share of your repayments that interest makes up, and a year-by-year table of principal, interest and the balance left. Use it to compare lenders' rates, choose a tenure you can afford, or see whether paying a little extra each month is worth it.
How to use the EMI Calculator
1.Enter the loan
Type the amount you're borrowing. Shortcuts like 25L or 1.2cr work, and the box shows the amount in lakh or crore as you type.
2.Set rate and tenure
Add the yearly interest rate from your lender and the tenure in years or months. The EMI updates as you type.
3.Try an extra payment
Add an amount to pay on top of the EMI each month to see how many months and how much interest it saves.
Example: ₹10 lakh at 8.5% for 20 years
A ₹10,00,000 loan at 8.5% a year, repaid over 240 months:
- Monthly rate
- 8.5 ÷ 12 ÷ 100 = 0.7083%
- EMI
- ₹8,678
- Total interest
- ₹10,82,776
- Total repaid
- ₹20,82,776
EMI = P × r × (1 + r)^n ÷ ((1 + r)^n − 1)
Interest ends up slightly more than the amount borrowed, which is why a shorter tenure or prepayments make such a difference.
How the EMI is worked out
The calculator uses the standard reducing-balance formula every bank uses: EMI = P × r × (1 + r)^n ÷ ((1 + r)^n − 1), where P is the loan amount, r the monthly interest rate (the yearly rate ÷ 12 ÷ 100) and n the number of monthly instalments.
Each month, interest is charged on the balance still owed, and the rest of the EMI reduces that balance. That's why early EMIs are mostly interest and later ones mostly principal, even though the instalment never changes. An extra payment goes straight to principal, so every later month's interest is smaller.
Frequently asked questions
What is the formula for EMI?
EMI = P × r × (1 + r)^n ÷ ((1 + r)^n − 1), with P the principal, r the monthly rate and n the number of months. For ₹10 lakh at 8.5% for 20 years that gives ₹8,678.
Does a longer tenure reduce the EMI?
Yes, but it raises the total interest a lot. Stretching a ₹10 lakh loan at 8.5% from 10 to 20 years cuts the EMI from ₹12,399 to ₹8,678 but more than doubles the interest.
Is the EMI the same every month?
For a fixed-rate loan, yes. On a floating-rate loan the bank changes the EMI or the tenure when the rate moves.
Why is most of my early EMI interest?
Interest is charged on what you still owe, which is largest at the start. As the balance falls, more of each EMI goes to principal.
Can I use it for loans in dollars or euros?
Yes. Pick a currency in the header. The maths is identical in any currency; only the symbol and digit grouping change.
Related tools
Home Loan EMI Calculator
EMI, interest and amortization for a home loan of up to 30 years.
Car Loan EMI Calculator
EMI and total cost of a new or used car loan over 1 to 8 years.
Personal Loan EMI Calculator
EMI and interest on an unsecured personal loan of up to 7 years.
Credit Card Payoff Calculator
How long a card balance takes to clear and the interest it costs.
Mortgage Calculator
Monthly mortgage payment with property tax, insurance, PMI and HOA.
SIP Calculator
What a monthly mutual fund SIP could grow to, year by year.