EMI / Loan Calculator

About the EMI / Loan Calculator

EMI stands for Equated Monthly Instalment — the fixed amount you pay each month on a loan so that it's fully cleared, principal and interest, by the end of the term. Enter the loan amount, the annual interest rate and the tenure, and this tool shows the monthly instalment along with how much of your total outlay is principal versus interest, the grand total you'll repay, and the number of instalments.

It's useful before you borrow — comparing a home, car, personal or education loan across different rates and terms — and for sanity-checking the figure a lender quotes you. Because it separates out total interest, it also makes the real cost of a longer tenure obvious.

How it works — the actual formula

It uses the standard reducing-balance amortisation formula:

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

where:

• P = loan amount (principal)
• r = monthly interest rate = annual rate ÷ 12 ÷ 100
• n = number of monthly instalments = years × 12

On a 500,000 loan at 9% for 5 years, r = 0.0075 and n = 60, giving an EMI of about 10,379. Total payment = EMI × n, and total interest = total payment − principal. If the interest rate is 0, it falls back to a simple P ÷ n. This is the reducing-balance method every mainstream bank uses — each instalment is the same, but early payments are mostly interest and later ones mostly principal.

Assumptions and rounding

• Fixed rate for the whole term. The rate you enter is assumed constant across every instalment.
• Monthly compounding, with the first instalment one month after disbursal and equal instalments throughout.
• Tenure is converted to whole months (years × 12); enter a fractional year and it's taken to the nearest month.
• Outputs are rounded to whole numbers for display, so the total may differ from EMI × instalments by a rounding unit or two.
• The tool is currency-agnostic — it shows plain numbers with no symbol, so the same result applies whether you think in ₹, $, £ or any other currency.

Part payments and extra EMI

Open "Part payments / extra EMI" below the calculator to model paying more than the scheduled EMI. Four options, usable together:

• Pay extra every month — a fixed additional amount added to every instalment from a month you choose (e.g. rounding your EMI up).
• One-time lumpsum payment — a single extra payment in a specific month (e.g. a bonus or maturity payout).
• Extra payment once every year — a recurring annual lumpsum from a year you choose.
• Step-up EMI — increases your EMI itself by a fixed percentage every year, common for borrowers expecting rising income.

For each, choose whether the extra amount should reduce your tenure (EMI stays the same, you finish earlier) or reduce your EMI (tenure stays the same, your monthly instalment drops). Reducing tenure saves more total interest for the same extra amount, since the loan is cleared sooner. Step-up EMI always shortens the tenure — it changes the EMI itself, so it can't be combined with the "reduce EMI" option.

Amortization schedule

The "Amortization schedule" section breaks the loan down year by year — EMI paid, principal, interest, any extra payment, closing balance, and the percentage of your principal paid off so far. Click a year to expand it into its 12 individual months. Early instalments are mostly interest; later ones are mostly principal — the schedule makes that shift, and the effect of any part payment on it, visible month by month rather than just as a single total.

Limitations

This is the pure loan-repayment maths. Real-world borrowing usually costs more than the EMI alone:

• It excludes fees and charges — processing fees, GST/taxes on fees, insurance, stamp duty or documentation charges. Your effective cost (APR) is therefore higher than the rate you enter.
• It assumes a fixed rate for the base schedule, so it won't reflect floating-rate loans where the lender's benchmark rate itself moves mid-term (step-up EMI here changes your instalment on a schedule you set, not in response to a rate change).
• It doesn't model payment moratoriums (a paused-repayment period) or a lender resetting your entire schedule after a part payment differently than the reduce-tenure/reduce-EMI choice offered here.
• It's a reducing-balance calculator. Some lenders quote "flat rate" interest, which is computed differently and usually works out more expensive for the same headline number — don't compare the two directly.

How to lower your EMI or pay off faster

The three base inputs pull in predictable directions, and it's worth trying combinations:

• A longer tenure lowers the monthly EMI but raises total interest — you pay less each month for longer, and more overall.
• A lower rate reduces both EMI and total interest; even a fraction of a percent matters over a long term.
• A larger down payment (smaller principal) reduces everything proportionally.
• Any part payment, however small, cuts total interest because it reduces the balance interest is charged on for every remaining month — the earlier in the loan you make it, the more it saves.

Use the total-interest figure, not just the EMI, to judge which trade-off is actually cheaper.

Privacy

All figures are calculated in your browser. Nothing about your loan is uploaded, logged, or stored.