Understanding EMI: What It Is and How It's Calculated
What is EMI?
EMI stands for Equated Monthly Installment — a fixed payment you make every month toward repaying a loan. Each EMI has two components: principal and interest. In the early months most of your EMI goes toward interest; as the loan ages, more goes toward principal.
The EMI Formula
EMI = [P × r × (1+r)^n] / [(1+r)^n − 1]
Where:
- P = principal loan amount
- r = monthly interest rate (annual rate ÷ 12 ÷ 100)
- n = tenure in months
Worked Example
For a ₹50 lakh home loan at 8.5% for 20 years:
- P = 50,00,000
- r = 8.5 ÷ 12 ÷ 100 = 0.00708
- n = 240
Plug into formula: EMI ≈ ₹43,391/month.
Over 20 years you pay ₹43,391 × 240 = ₹1,04,13,879 — meaning ₹54,13,879 goes to interest alone.
How to Reduce Your EMI Burden
- Shorter tenure — pay higher EMI, lower total interest.
- Partial prepayment — most floating-rate loans allow free prepayment.
- Refinance — switch lenders when rates drop.
- Higher down payment — reduces principal.
Related
Use our EMI Calculator to test different scenarios.