EMI Calculator — Home Loan, Car Loan & Personal Loan

What this EMI calculator actually shows you

It works out the fixed monthly payment — the EMI, or Equated Monthly Instalment — on a home loan, car loan, personal loan, or any reducing-balance loan, from three inputs: the principal, the annual interest rate, and the tenure. Alongside the monthly figure it breaks out the total interest, the total payment, the principal-vs-interest split, and a year-by-year amortization schedule. Every calculation runs in your browser — no login, nothing stored, no numbers sent to a server.

Treat the result as an estimate, not financial advice. Lenders round differently and add processing fees, insurance, and taxes such as GST, and your actual rate depends on credit score, loan amount, and negotiation. Use this to compare options and plan — alongside the monthly mortgage payment calculator or the debt payoff calculator — then confirm the exact figure with your bank.

The reducing-balance formula behind every EMI

Every number here comes from one equation: EMI = P × r × (1+r)^n / ((1+r)^n − 1), where P is the principal, r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the tenure in months. This is reducing-balance interest: each month, interest is charged only on the balance still outstanding, so as the balance falls the interest portion of every fixed EMI shrinks and the principal portion grows.

That is very different from a flat-rate quote, where interest is charged on the full original amount for the entire term. A “flat” rate always costs more than the same number quoted as reducing balance — so if a car dealer quotes flat interest, don’t compare it head-to-head with a reducing-balance percentage. This tool models reducing balance only.

The practical upshot: early EMIs are almost all interest. On a fresh long-tenure loan the very first payment can be more than 80% interest — which is exactly why prepaying early saves far more than prepaying late.

A worked example: a ₹50 lakh home loan at 8.5% for 20 years

Enter a principal of 5,000,000, a rate of 8.5%, and a tenure of 20 years (240 months). The monthly rate r is 8.5 ÷ 12 ÷ 100 = 0.0070833. Run the formula and the EMI works out to ₹43,391:

P = 5,000,000      r = 0.0070833 (8.5% / 12)      n = 240

                EMI = P · r · (1+r)^n / ((1+r)^n − 1)
                    = 43,391 per month

                Total paid     = 43,391 × 240   = 1.04 Cr
                Total interest = 1.04 Cr − 50 L = 54.14 L

Over 20 years the total interest (₹54.14 lakh) is actually larger than the ₹50 lakh you borrowed. And the split inside a single EMI shifts dramatically over time. In month 1, interest is ₹50,00,000 × 0.0070833 = ₹35,417 and only ₹7,975 goes to principal. By year 10 (month 120) the same ₹43,391 EMI splits roughly ₹24,920 interest to ₹18,471 principal, and the final payment is almost all principal (₹43,086) with just ₹305 interest.

How the principal-vs-interest split shifts each year

The amortization schedule makes the crossover visible. Here is the same ₹50 lakh / 8.5% / 20-year loan summarised by year, formatted the way the calculator displays it (lakh/crore notation):

For the first several years most of your money services interest; the two lines cross near the middle of the term, after which principal dominates. That shape is why a small extra payment in year 1 removes far more total interest than the same payment made in year 15.

Reverse EMI and prepayment — the two things most calculators skip

The Affordability tab runs the formula backwards. Instead of asking “what’s my EMI?”, it answers “how much can I borrow?” — it takes your monthly EMI budget, rate, and tenure and returns the maximum loan, using maxLoan = EMI × [(1+r)^n − 1] / [r × (1+r)^n]. A budget of ₹20,000/month at 8.5% over 20 years supports a loan of about ₹23.05 lakh. That is the borrowing-capacity number worth knowing before you walk into a bank.

The Extra Monthly Payment field models prepayment (part-payment). Add ₹5,000/month to that same ₹50 lakh loan and the calculator rebuilds the amortization schedule: total interest falls from ₹54.14 lakh to roughly ₹40.25 lakh — about ₹13.89 lakh saved — and the loan closes about four years (48 months) early. Because early EMIs are interest-heavy, prepaying sooner always beats prepaying later.

The third tab, Compare Loans, puts two offers side by side — monthly EMI, total interest, and total payment for Loan A versus Loan B — and flags which costs less, so a tempting low headline rate stretched over a longer tenure doesn’t quietly cost you more.

India vs US: the same math, different vocabulary

The reducing-balance math is universal, but the words around it are not. The calculator toggles between ₹ INR and $ USD and carries region-specific loan-rate news for India, the USA, and global markets. If you’re reading guidance written for another country, this maps the terms:

In India, major lenders such as SBI, HDFC, and ICICI publish repo-linked home-loan rates that reset as the RBI repo rate moves, so two borrowers on “the same” loan can pay different EMIs. Rates, fees, and prepayment rules vary by country, lender, and product — and they change. The figures in the loan-rate news section are refreshed periodically and are for reference only. Whatever the label on your loan, confirm the exact rate, the effective EMI, and any prepayment penalty with the lender before you sign. This tool gives a solid estimate; it is not financial advice.

Frequently asked questions