How to Use the EMI Calculator
Enter your loan amount, annual interest rate, and loan tenure in years. Select the loan type (Home, Car, Personal, or Education) using the toggle at the top. The EMI is calculated instantly as you type. Use the range sliders for quick adjustments. Switch to the Loan Comparison tab to compare two loan offers side by side.
EMI Calculator Formula
EMI = P × r × (1+r)^n / ((1+r)^n − 1)P= Principal loan amountr= Monthly interest rate (annual rate ÷ 12 ÷ 100)n= Total number of monthly instalments (tenure × 12)
Example Calculation
For a ₹50 lakh home loan at 8.5% per annum for 20 years:
r = 8.5/12/100 = 0.007083; n = 240; EMI = 5000000 × 0.007083 × (1.007083)^240 / ((1.007083)^240 − 1)
Monthly EMI = ₹43,391
What an EMI Actually Is
EMI stands for Equated Monthly Instalment — the fixed amount you pay your lender every month until a loan is fully repaid. The word "equated" matters: although the rupee amount stays the same each month, what that money pays for changes over time. In the early months most of your EMI is interest, with only a small slice reducing the principal. As the outstanding balance falls, the interest portion shrinks and more of each payment chips away at the principal. This is called amortisation, and it is why prepaying early in a loan saves far more interest than prepaying near the end.
For most Indian borrowers, the EMI is the single largest recurring outflow they will ever commit to — a 20-year home loan locks in 240 payments. Understanding how it is built lets you negotiate better, choose the right tenure, and decide intelligently when to prepay.
How Loan Type Changes Your EMI
The same formula drives every loan, but the inputs differ sharply by loan type in India. Knowing the typical ranges helps you sanity-check any offer a bank or app makes you.
- Home loans: 8–9.5% per annum, tenures up to 30 years. The lowest rates because the property is collateral. Floating rates are linked to the RBI repo rate, so your EMI can change when the RBI moves rates.
- Car loans: 9–12% per annum, tenures of 3–7 years. Secured by the vehicle, which depreciates, so tenures are shorter.
- Personal loans: 11–24% per annum, tenures of 1–5 years. Unsecured, so rates are high and depend heavily on your credit score.
- Education loans: 8.5–13% per annum, often with a moratorium during the study period when no EMI (or only interest) is due.
Use the loan-type toggle at the top of the calculator to start from a realistic rate for your situation, then adjust to match the exact offer in front of you.
Fixed vs Floating Interest Rates
Floating rate
Your rate is tied to an external benchmark — for most home loans, the RBI repo rate plus a spread. When the RBI cuts rates, your EMI (or tenure) falls; when it hikes, it rises. Floating rates start lower and have no prepayment penalty on home loans for individuals, which is why most long-term borrowers choose them.
Fixed rate
Your rate is locked for the full tenure (or a fixed initial period). You get certainty — the EMI never changes — but you pay a premium of roughly 1–2% over the floating rate, and you may face a prepayment penalty. Fixed rates suit short-tenure loans or borrowers who cannot absorb any increase in monthly outflow.
The 40% Rule and How Much EMI You Can Afford
Lenders and financial planners use a simple guardrail: your total EMIs across all loans should stay under 40–50% of your monthly take-home pay. This is the FOIR (Fixed Obligations to Income Ratio) that banks check before approving you. If your in-hand salary is ₹1,00,000, keep all EMIs combined under ₹40,000–₹50,000.
Staying below this band leaves room for SIPs, an emergency fund, and the inevitable months when something breaks. Crossing 50% is the single most common reason borrowers end up trapped — one job change or medical bill turns a comfortable loan into a default risk. Before you commit, run your target EMI through this calculator and compare it against 40% of your actual take-home, not your CTC.
Should You Prepay or Invest the Surplus?
When you have spare cash, the choice is between prepaying the loan and investing. The deciding factor is a straight comparison of rates. Prepaying a 9% home loan is a guaranteed, tax-free 9% return — hard to beat with a debt instrument. But an equity SIP has historically returned 11–12% over long periods, so investing may build more wealth if you can stay invested through the volatility.
A practical rule: prepay high-interest unsecured debt (personal loans, credit cards at 18–40%) before anything else, because no investment reliably beats those rates. For a cheap home loan, many borrowers split the surplus — prepay enough to stay comfortable, invest the rest. And always prepay early in the tenure, when the interest portion of each EMI is largest. Switch to the Loan Comparison tab to see exactly how a lump-sum prepayment reshapes your total interest.
Frequently Asked Questions
What is the formula for calculating EMI?
EMI = P × r × (1+r)^n ÷ ((1+r)^n − 1), where P = principal amount, r = monthly interest rate (annual rate ÷ 12 ÷ 100), and n = total number of monthly instalments.
What is a good EMI to salary ratio?
Financial advisors recommend keeping total EMIs below 40–50% of your monthly take-home salary. Going above 50% puts you at risk during income disruptions.
How can I reduce my EMI?
You can reduce EMI by: (1) increasing the loan tenure, (2) making a higher down payment to reduce principal, (3) negotiating a lower interest rate, or (4) prepaying a lump sum to reduce the outstanding principal.
Does prepayment reduce EMI or tenure?
Most lenders in India allow you to choose. Reducing tenure saves more interest overall. Reducing EMI improves monthly cash flow. Always check if your lender charges prepayment penalties.
What happens if I miss an EMI?
A missed EMI attracts a penalty (typically 1–2% of overdue amount), impacts your CIBIL credit score, and can trigger legal action after 90 days of default (NPA classification).
Sources
All calculations run in your browser and are provided for information only — they are not investment, tax or legal advice. Verify current rates and rules with the official source above before acting.
Related Guides
- Home Loan vs Rent: The Decision Worth More Than Your CareerA ₹1 crore flat rents for ₹25,000 but its EMI is ₹70,000. Whether that gap makes renting smart or buying urgent depends on three numbers most people never compute.
- How EMI Is Calculated: The Exact Formula Banks UseEMI = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1). What each symbol means, a full worked example, and why your early EMIs barely touch the principal.
- How Much Home Loan Can You Afford on Your Salary?The 40% rule, FOIR, and how lenders actually decide your home loan limit — with worked examples for ₹50,000, ₹1 lakh and ₹2 lakh monthly salaries.