How to calculate home loan EMI (with examples)

The formula

Every bank in India uses the same standard formula to calculate home-loan EMI:

EMI = P × r × (1 + r)n ÷ ((1 + r)n − 1)

Where P is the principal (the loan amount), r is the monthly interest rate (annual rate divided by 12, then by 100), and n is the number of monthly instalments. The result is the fixed amount you'll pay every month for the entire tenure on a fixed-rate loan, or until the next reset on a floating-rate loan.

Example 1: ₹30 lakh home loan

You're buying a 2-BHK in Pune for ₹40 lakh. After putting down 25% (₹10 lakh) and registration costs from your savings, you take a ₹30 lakh loan from SBI at 8.75% per year for 20 years.

• P = 30,00,000 ; r = 8.75 ÷ 12 ÷ 100 = 0.0072917 ; n = 240
• EMI = ₹26,510 per month
• Total paid over 20 years = ₹63,62,400
• Total interest = ₹33,62,400 — meaning you'll pay more in interest than the loan itself

Example 2: ₹50 lakh home loan

A larger ₹50 lakh loan at the same 8.75% for 20 years works out to ₹44,184 per month and ₹56.04 lakh in total interest. Drop the rate by just 0.5% to 8.25% and the EMI falls to ₹42,603 per month, saving ₹3.79 lakh over the loan's life. This is why even small rate negotiations matter.

Three ways to reduce your EMI legally

1. Pre-pay aggressively in the early years

The reducing-balance method front-loads interest. In the first year of a 20-year loan, around 80% of every EMI is interest and only 20% is principal. A ₹2 lakh pre-payment in year 1 of a ₹30 lakh loan removes about 12 EMIs from the tenure and saves ₹3.5 lakh in interest. The same pre-payment in year 15 removes only 4 EMIs and saves about ₹40,000.

2. Switch to a lower-rate lender

Banks compete heavily for home-loan customers with strong credit scores. After two years of clean repayment, balance-transfer offers from competitors are routine. A 0.5% rate drop on a ₹50 lakh / 20-year loan saves about ₹4 lakh — well worth the ₹10–15K processing fee.

3. Step-up your EMI as your salary grows

Most lenders allow voluntary EMI increases. Raising a ₹26,510 EMI to ₹30,000 (a roughly 13% bump) shaves about 4 years off a 20-year tenure and saves ₹8.7 lakh in interest. A salary appraisal of 8–10% per year easily covers this.

What this calculator does not include

EMI is principal plus interest only. Your actual monthly outflow on a home loan also includes property insurance, life insurance (often bundled), processing fees (paid upfront), and 18% GST on those fees. Always budget for an extra ₹1,500–₹3,000 per month on these costs.

Frequently asked questions

Does the EMI stay the same throughout the loan?

For fixed-rate loans, yes. For floating-rate loans, the EMI is recalculated each time the lender's benchmark rate changes — the bank will inform you and adjust either the EMI amount or the tenure.

Is it better to invest extra cash or pre-pay the loan?

If your loan rate is higher than the after-tax return you can earn elsewhere, pre-pay. Most home loans at 8–9% beat the after-tax return on FDs but lose to long-term equity SIPs. A balanced approach: pre-pay enough to clear the loan a few years early, invest the rest.

How is the EMI different for a personal loan vs home loan?

The formula is identical, but personal loan rates are typically 12–18% versus 8–9% for home loans, and tenures are shorter (3–5 years vs 15–25 years). The result: personal-loan EMIs are dramatically more expensive per rupee borrowed.

Related reading

• How to Reduce EMI: 7 Proven Methods
• Fixed vs Floating Interest Rate
• Best Loan Repayment Strategies
• SIP vs FD: Which is Better?

Try the related calculator

Plug your own numbers into our free Loan EMI Calculator. Comparing investing your savings instead of pre-paying? Use the SIP Calculator to model both scenarios.