What is an EMI?
EMI stands for equated monthly installment: the fixed amount you pay your lender every month until a loan is paid off. Each payment covers two things, the interest charged that month and a slice of the original amount borrowed (the principal). Banks in the US and UK usually just call it the "monthly payment," but the math is identical.
The payment stays the same, but its makeup changes. Early on, most of it is interest because you owe a lot. Toward the end, almost all of it is principal. The year-by-year table above shows this shift.
The EMI formula
EMI = P × r × (1 + r)n ÷ ((1 + r)n − 1)
- P is the loan amount (principal).
- r is the monthly interest rate: the yearly rate divided by 12, then by 100. A 9.5% yearly rate gives r = 0.0079167.
- n is the number of monthly payments: years × 12.
If the interest rate is 0%, the formula simplifies to P ÷ n.
Worked example
You borrow 25,000 for 5 years at 9.5% a year.
r = 9.5 ÷ 12 ÷ 100 = 0.0079167, and n = 5 × 12 = 60.
(1 + r)60 = 1.6059. So EMI = 25,000 × 0.0079167 × 1.6059 ÷ 0.6059 = 525.05 a month.
Over 60 months you pay 31,503 in total, so the loan costs 6,503 in interest.
How rate and term change what you pay
A longer term lowers the monthly payment but raises the total interest, often by a lot. Here's the same 25,000 loan at 9.5%:
| Term | Monthly payment | Total interest |
|---|---|---|
| 3 years | 800.82 | 3,829.65 |
| 5 years | 525.05 | 6,502.79 |
| 7 years | 408.60 | 9,322.36 |
Stretching from 3 to 7 years cuts the payment in half but more than doubles the interest. Choose the shortest term whose payment you can comfortably afford.
Ways to pay less interest
- Make extra payments toward principal. Even small amounts early in the loan cut total interest, because future interest is charged on a smaller balance. Check that your lender doesn't charge a prepayment penalty.
- Improve your credit score before applying. A rate even one point lower saves a meaningful amount over a long loan.
- Make a larger down payment. Borrowing less reduces both the payment and the interest.
- Compare the APR, not just the rate. APR includes fees, so it's the fairer comparison between lenders.
Good to know: this calculator assumes a fixed rate and equal monthly payments. Your lender's figure may differ slightly due to fees, insurance added to the payment, rounding, or a different day-count method. Treat the result as a close estimate, not a quote.
Frequently asked questions
Is EMI the same for home, car and personal loans?
The formula is the same for any fixed-rate loan repaid in equal monthly installments. What differs is the rate and term each lender offers.
What happens to my EMI if the interest rate changes?
On a floating-rate loan, lenders either change the EMI or keep it the same and change the number of months left. Recalculate here with the new rate and the remaining balance and term to see the effect.
Does this calculator work in my currency?
Yes. The math doesn't depend on currency. Enter amounts in dollars, rupees, pounds or anything else, and read the results in the same currency.
Why is so much of my early payment interest?
Interest each month is charged on the balance you still owe. At the start the balance is highest, so interest takes the biggest share. As you repay, the interest share shrinks and the principal share grows.
Last reviewed November 2026.