How to Calculate EMI (Equated Monthly Installment)
EMI (Equated Monthly Installment) is the fixed payment amount you make to a lender each month. Understanding how EMI works helps you plan your finances better.
The EMI Formula
EMI = P × r × (1+r)^n / ((1+r)^n - 1), where P is the principal loan amount, r is the monthly interest rate (annual rate / 12 / 100), and n is the total number of monthly installments. This formula ensures each payment is equal throughout the loan tenure.
Example Calculation
For a ₹10 lakh loan at 10% for 5 years: P = 10,00,000, r = 10/(12×100) = 0.00833, n = 60 months. EMI = 10,00,000 × 0.00833 × (1.00833)^60 / ((1.00833)^60 - 1) = ₹21,247 per month. Total repayment = ₹12,74,820, of which ₹2,74,820 is interest.
Factors Affecting EMI
Three factors determine your EMI: loan amount (higher principal = higher EMI), interest rate (even 0.5% difference matters over long tenures), and loan tenure (longer tenure = lower EMI but more total interest). A ₹50 lakh home loan at 8.5% for 20 years has an EMI of ₹43,391, but for 30 years it's ₹38,446 — lower EMI but ₹51L more in total interest.
Tips to Reduce EMI
Negotiate a lower interest rate, make a larger down payment, choose a shorter tenure if affordable, consider a balance transfer to a lower-rate lender, and make prepayments whenever possible to reduce outstanding principal.