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EMI Calculator

Calculators · By Sidhin · Added

EMI stands for Equated Monthly Instalment — the fixed amount you pay a lender each month until a loan is cleared. It is the same arithmetic for a home loan, a car loan or a personal one, so this handles all three. Enter the amount borrowed, the annual interest rate and the tenure to see the instalment, the total interest you will pay, and how each payment splits between interest and principal — by month or by year.

%
Tenure unit

How to use the emi calculator

  1. 1Enter the loan amount (principal) you intend to borrow.
  2. 2Enter the annual interest rate as a percentage — 8.5 rather than 0.085.
  3. 3Set the tenure in years or months using the toggle.
  4. 4Read the EMI, total interest and total payable, then open the schedule to see the year-by-year breakdown.

Examples

Home loan

Input
Principal 2,500,000 · Rate 8.5% p.a. · Tenure 20 years
Result
EMI 21,696 · Total interest 2,706,939 · Total payable 5,206,939

Over twenty years the interest slightly exceeds the amount borrowed.

Car loan

Input
Principal 800,000 · Rate 9.2% p.a. · Tenure 5 years
Result
EMI 16,684 · Total interest 201,067 · Total payable 1,001,067

About the emi calculator

How an EMI is actually constructed

An EMI is engineered so that the payment stays flat while its composition shifts. The lender computes a single amount which, paid every month for the full tenure, exactly clears both the principal and the interest that accrues along the way. Everything else follows from that constraint.

In the first month, interest is charged on the whole principal. If you borrow 2,500,000 at 8.5% annually, the monthly rate is roughly 0.708%, so the first month's interest is about 17,708. With an EMI of 21,696, only around 3,988 goes toward the debt itself. By the final year that ratio has inverted almost entirely.

Using the schedule to decide on prepayment

The amortisation schedule is the most useful part of this page, because it tells you what a lump-sum prepayment is worth. A prepayment reduces the outstanding balance immediately, and every future month's interest is calculated on that smaller number — so the earlier it lands, the more it saves.

As a rule of thumb, a prepayment made in the first third of a long loan can cut total interest by several times its own value. The same amount paid in the final year barely moves the needle, because there is little balance left to charge interest on.

Fixed versus floating rates

This calculator assumes a fixed rate for the whole tenure. Many long-term loans, especially mortgages, use a floating rate tied to a benchmark. When that benchmark moves, lenders typically keep the EMI constant and adjust the tenure instead, which hides the change from your monthly budget while quietly extending the loan.

If you are on a floating rate, re-run the numbers whenever the rate changes and ask your lender whether they are adjusting the instalment or the term. The two produce very different total costs.

Sources

The method this tool implements, and where it is defined. Follow a link to check the figures against the original rather than taking this page’s word for them.

  • Reserve Bank of India — Reserve Bank of India

    The regulator setting Indian lending and interest-disclosure rules, including the benchmark rates EMIs are priced off.

  • Compound Interest (glossary) — US Securities and Exchange Commission, Investor.gov

    The compounding definition the amortisation formula rests on.

Frequently asked questions

What formula is used to calculate EMI?
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 number of monthly instalments. When the rate is zero the formula collapses to simply P ÷ n.
Why does most of my early EMI go to interest?
Interest is charged on the outstanding balance, which is at its largest at the start. Each instalment covers that month's interest first, and only the remainder reduces the principal. As the balance falls the interest portion shrinks and the principal portion grows — the schedule on this page shows the crossover point.
Does a shorter tenure really save that much?
Substantially. Halving a tenure raises the monthly instalment by much less than double, but it cuts total interest dramatically, because the balance spends far fewer months accruing charges. Try the same principal at 20 and 15 years to see the effect.
Does this include processing fees or insurance?
No. The result is the pure repayment figure. Lenders often add processing charges, documentation fees or bundled insurance, which raise the effective cost. Ask for the annual percentage rate (APR) to compare offers on equal terms.

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