How Is Loan EMI Calculated? Formula, Examples & Tips to Reduce EMI
17 September 2026
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EMI (Equated Monthly Instalment) is the fixed amount you pay every month to repay a loan. Each EMI has two parts — interest and principal. Knowing how EMI is calculated helps you choose the right loan amount and tenure.
The EMI formula
EMI = P × r × (1 + r)ⁿ / ((1 + r)ⁿ − 1)
- P = Loan amount (principal)
- r = Monthly interest rate (annual rate ÷ 12 ÷ 100)
- n = Tenure in months
Example
Loan of ₹5,00,000 at 11% per year for 3 years:
- r = 11 ÷ 12 ÷ 100 = 0.009167
- n = 36 months
- EMI ≈ ₹16,369
- Total payment ≈ ₹5,89,300, so total interest ≈ ₹89,300
How tenure changes your EMI (₹5 Lakh at 11%)
| Tenure | Monthly EMI | Total Interest |
|---|---|---|
| 2 years | ₹23,304 | ₹59,300 |
| 3 years | ₹16,369 | ₹89,300 |
| 5 years | ₹10,871 | ₹1,52,300 |
A longer tenure means a smaller EMI but more total interest.
How the interest rate changes your EMI (₹30 Lakh home loan, 20 years)
| Interest rate | Monthly EMI |
|---|---|
| 8.0% | ₹25,093 |
| 8.5% | ₹26,035 |
| 9.0% | ₹26,992 |
Even a 0.5% lower rate saves you around ₹2.2 Lakh over 20 years.
6 smart ways to reduce your EMI
- Improve your CIBIL score to qualify for lower interest rates.
- Make a bigger down payment to borrow less.
- Choose a longer tenure if monthly cash flow is tight.
- Prepay whenever you get a bonus — it cuts the principal.
- Balance transfer your loan to a lender with a lower rate.
- Compare lenders before you sign — rates differ widely.
Frequently Asked Questions
Does EMI change during the loan? For fixed-rate loans, no. For floating-rate loans (like most home loans), the EMI or tenure changes when the lender revises its rate.
Why is most of my early EMI going to interest? Interest is calculated on the outstanding balance, which is highest in the early months. As you repay, the principal share grows.
Skip the maths — use the free EMI calculator on Best Home Loan and see your EMI, total interest and repayment instantly.
