What is the difference between EMI and simple monthly instalment?

EMI assumes reducing-balance amortisation (interest on shrinking balance). Flat-rate 'instalments' front-load interest opaquely — always compare on reducing-balance APR.

Does prepayment reduce EMI or tenure?

Either, per your instruction. Tenure-cut saves far more interest; EMI-cut eases cashflow. Most wealth-builders choose tenure-cut.

Why did my floating EMI change?

Lenders reset rates with benchmark moves. They usually extend tenure first, then offer EMI reset. Check your amortisation letter after each reset.

What EMI can I afford?

Keep total EMIs under 35–40% of net monthly income, with 6 months' buffer. Stress-test at +2–3 points before signing.

Is EMI the same as a loan payment?

Mathematically yes for fixed amortising loans — EMI is the Commonwealth term for the same annuity payment our Loan Calculator shows in years.

Financial · Free tool

EMI Calculator

Equated Monthly Instalment for home, car and personal loans.

EMI — Equated Monthly Instalment — is the fixed amount you pay a lender every month until a reducing-balance loan is cleared. It dominates borrowing across India, the UK, the Gulf and Southeast Asia for home loans, car loans and personal loans. This EMI calculator converts principal, annual reducing-balance rate and tenure in months into your EMI, lifetime interest, and total payable, so a ₹25,00,000 home loan or £20,000 car loan holds no surprises.

EMI uses the same annuity maths as Western amortisation: interest each month on the shrinking balance, the rest retiring principal. What differs is convention — tenure quoted in months, rates as annual reducing-balance, and part-prepayment culture (13th EMI, annual bonuses) that can halve loan life. A 1-point rate cut on a 20-year home loan often saves more than a 2-year tenure cut costs monthly, which is why the tool foregrounds total interest alongside EMI.

Enter principal, annual rate, and months (use ×12 for years). Compare two tenures side-by-side with Reset — e.g. 240 vs 180 months — and let total interest decide, not just affordability.

Updated 2026-09-01 · 7-min read · Formula + steps included

● EMI workstation

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EMI formula (reducing balance)

EMI = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1), r = annual/12/100, n = months

Identical to amortised-loan maths with monthly rests. At zero rate, EMI = P ÷ n. Floating-rate loans re-compute EMI (or tenure) when r resets; fixed-rate loans hold EMI constant. Total interest = EMI×n − P; principal share rises each month as interest share falls.

P: Principal disbursed (loan minus down-payment). Add processing fees only if capitalised.
r: Monthly reducing-balance rate. 9% annual → 0.0075 monthly.
n: Tenure in months (20y = 240). Prepayments effectively cut n.

Worked example: ₹25,00,000 at 8.5% for 20 years

Classic Indian home-loan check:

r = 0.085 ÷ 12 = 0.0070833; n = 240.
(1+r)ⁿ ≈ 5.4361.
EMI = 25,00,000 × 0.0070833 × 5.4361 ÷ 4.4361 ≈ ₹21,705.
Total: 21,705 × 240 = ₹52,09,200; interest ≈ ₹27,09,200.
Shorten to 15y (180m): EMI ≈ ₹24,610 (+₹2,905/mo) but interest ≈ ₹19,29,800 — saves ~₹7.8 lakh.

Result: EMI ≈ ₹21,705/mo — total ≈ ₹52.09L — interest ≈ ₹27.09L over 240 months.

How to use this EMI calculator

Three inputs lenders themselves use.

Step 1: Enter principal

Loan after down-payment. For property, exclude stamp duty/registration unless financed.

Step 2: Enter annual rate

Reducing-balance rate (e.g. 8.5). For floating loans, run best/base/worst cases (±1–2 points).

Step 3: Enter months

Years × 12. Common: car 36–84, personal 12–72, home 120–360.

Step 4: Stress-test

Can you afford EMI at +2 points? Is total interest acceptable? Try prepaying 5% yearly as a shorter n.

Use cases

EMI decisions across life stages:

Home loans

₹50L/8.5%/20y ≈ ₹43,410/mo. Banks cap EMI at ~40–50% of net income (FOIR) — stay well under for safety.

Car loans

£20,000/6.9%/48m ≈ £477/mo owned outright. Compare with lease + balloon: lower EMI but no asset.

Personal loans

₹5L/12%/36m ≈ ₹16,607/mo. Processing 1–2% + GST adds ~₹6–12k true cost — add to P when comparing.

Education loans

Moratorium interest capitalises: ₹10L at 9% with 2y pause ≈ ₹11.95L at repayment start. Model post-moratorium P.

Balance transfers

Moving 11%→8.5% on ₹20L/180m left saves ~₹3.2L interest even after 0.5% transfer fee — verify with two runs.

Pro tips

Pay less interest without pain:

One extra EMI a year (÷12 added monthly) cuts a 20y loan by ~4–5 years.
Prepay early: ₹1L in year 2 saves ~3× the interest of ₹1L in year 12.
Choose tenure cut over EMI cut after floating-rate falls — same relief, far less lifetime interest.
Keep emergency fund (6× EMI) before aggressive prepayment; foreclosure charges are mostly gone but liquidity matters.
Negotiate spread, not just repo/Bank Rate linkage — 0.25% off spread persists for the loan's life.

Common mistakes

EMI traps to avoid:

EMI shopping alone

₹21,705 (20y) vs ₹24,610 (15y): the cheaper EMI costs ₹7.8L more interest. Read both lines.

Ignoring reset risk

Floating 8.5% → 10.5% lifts EMI ~12% or extends tenure. Budget the +2% case from day one.

Flat vs reducing confusion

A '5% flat' auto rate ≈ 9–10% reducing-balance. Always convert to reducing for comparison.

Zero-down stretch

100% on-road funding at 84 months maximises interest and negative equity. Cap auto tenure at 60m when possible.

Disclaimer: Illustrative only — not financial advice. Actual EMI depends on rest frequency, fees, reset clauses and lender rounding. Confirm with your sanction letter.

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