Loan EMI Calculator
Estimate your monthly EMI, total interest, and total payment for any loan.
Monthly EMI
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Total interest
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Total payment
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An EMI (Equated Monthly Instalment) is the fixed amount you repay each month on a loan, made up of both principal and interest. Enter the loan amount, annual interest rate, and tenure, and this tool works out your monthly payment, the total interest you'll pay over the life of the loan, and the total amount repaid.
It uses the standard amortising-loan formula that banks use for personal, auto, and home loans, so the figures line up with what you'd see on an official loan statement — useful for comparing offers before you sign anything.
What the formula actually does
EMI = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1), where P is the principal, r is the monthly rate (the annual rate divided by 12, then by 100) and n is the number of monthly instalments.
The instalment stays constant, but its composition does not. Early payments are mostly interest, because interest is charged on the outstanding balance and that balance is at its highest on day one. As the principal falls, the interest share shrinks and more of each payment clears the debt. This is why paying a loan off early saves more than people expect — an extra payment shrinks the balance that every remaining interest charge is calculated on.
How tenure changes the true cost
| Tenure on a $20,000 loan at 10% | Monthly EMI | Total interest |
|---|---|---|
| 3 years | ≈ $645 | ≈ $3,232 |
| 5 years | ≈ $425 | ≈ $5,496 |
| 7 years | ≈ $332 | ≈ $7,891 |
Stretching the same loan from 3 to 7 years cuts the monthly payment by roughly half but more than doubles the interest paid. Figures are illustrative — run your own numbers above.
Comparing two loan offers properly
- Run both offers with their real interest rates and tenures, and write down the total interest, not the EMI.
- Add any processing fee, documentation charge or insurance premium to the lender's total — these are not in the EMI but you still pay them.
- Check whether the rate is fixed or floating. A floating rate that starts lower can end up costing more if the benchmark rises.
- Ask about prepayment penalties. A slightly higher rate with free prepayment often beats a lower rate that locks you in.
- Only then compare monthly affordability — the EMI matters for cash flow, but the total cost is what you actually pay.
Frequently asked questions
- How is EMI calculated?
- EMI = P × r × (1+r)^n / ((1+r)^n − 1), where P is the principal, r is the monthly interest rate, and n is the number of monthly instalments.
- Does a lower EMI always mean a cheaper loan?
- Not necessarily — stretching the tenure lowers the monthly EMI but usually increases the total interest paid over the loan's life. Compare total interest, not just the monthly figure.
- Does this include processing fees or insurance?
- No, it calculates pure principal-and-interest EMI. Add any fees separately when comparing real offers.
- Why is so little of my early EMI going to the principal?
- Interest is charged on the outstanding balance, which is largest at the start. In the first year of a long loan, most of each instalment covers interest; the balance tips toward principal over time.
- Will making one extra payment a year really shorten my loan?
- Yes, and usually by more than you'd expect. An extra payment goes entirely against principal, which reduces the balance every future interest charge is calculated on — often cutting years off a long tenure.
- Is EMI the same for a fixed and floating rate loan?
- It starts the same, but on a floating-rate loan the lender adjusts either the EMI or the tenure when the benchmark rate moves. This calculator models a fixed rate; rerun it at the new rate to see the effect of a change.
Read more on this
- How loan interest actually worksWhy your early repayments barely touch the principal, what a 'flat rate' quote is really costing you, and how to compare two loan offers on the number that matters.
- Prepaying your home loan vs investing: the math and trade-offsShould you use spare savings to prepay a mortgage or invest in index funds? How to evaluate guaranteed returns, tax deductions, and liquidity.
- How EMI is actually calculated, with a worked exampleThe EMI formula broken down term by term, a full worked example on a real loan amount, and why stretching the tenure can quietly cost you far more in interest.