EMI (Equated Monthly Installment) is the fixed monthly payment you make to repay a loan. Knowing your EMI before you commit lets you plan your budget and compare loan offers. Here's how it's calculated — and a free tool to run the numbers instantly.
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 = Number of monthly installments (tenure in months)
Worked example
Loan: ₹30,00,000 | Rate: 8.5% per year | Tenure: 20 years (240 months)
Monthly rate r = 8.5 / 12 / 100 = 0.007083
EMI = [30,00,000 × 0.007083 × (1.007083)²⁴⁰] / [(1.007083)²⁴⁰ – 1] ≈ ₹26,035/month
Total paid over 20 years: ₹26,035 × 240 = ₹62,48,400. Total interest: ₹32,48,400 — more than the original loan.
🏠EMI Calculator
Calculate EMI for home loans, car loans, and personal loans — free, instant results
How tenure affects total interest paid
For the same ₹30L loan at 8.5%:
- 10 years: EMI ₹37,160 → Total interest ₹14,59,200
- 15 years: EMI ₹29,540 → Total interest ₹23,17,200
- 20 years: EMI ₹26,035 → Total interest ₹32,48,400
- 30 years: EMI ₹23,070 → Total interest ₹53,05,200
Shorter tenure = higher monthly payment but dramatically less interest. Longer tenure = lower monthly burden but you pay nearly double the loan amount over time.
Tips to reduce your total interest
- Make a larger down payment to reduce the principal
- Negotiate a lower interest rate — even 0.5% saves significantly over 20 years
- Choose shorter tenure if your income allows it
- Make prepayments when possible — most lenders allow partial prepayment without penalty
- Refinance if market rates drop by 1%+ compared to your current rate
Frequently Asked Questions
What is a good EMI-to-income ratio?
Most financial advisors recommend keeping total EMIs (home + car + personal loans) under 40–50% of your monthly net income.
Does EMI change if interest rates change?
For floating rate loans, yes — your bank may adjust the EMI or the tenure when the benchmark rate changes. Fixed rate loans keep the same EMI throughout.
Can I reduce my home loan EMI?
Yes: by making prepayments (reduces principal), refinancing at a lower rate, or extending the tenure (reduces EMI but increases total interest paid).