What is the EMI?
An EMI (Equated Monthly Instalment) is the fixed amount you pay your lender every month until a loan is fully repaid. Each EMI has two parts — interest on the outstanding balance and principal that actually reduces the loan. In the early years of a long loan most of the EMI goes towards interest; the split gradually flips as the balance falls, which is exactly what the year-by-year table above shows.
This EMI calculator works for every reducing-balance loan sold in India and abroad — home loans, car loans, personal loans, education loans, loans against property and business loans — because they all use the same standard formula.
Formula & worked example
The EMI formula used by banks and NBFCs is:
where P is the loan amount, i is the monthly interest rate (annual rate ÷ 12 ÷ 100) and N is the number of monthly instalments (years × 12).
Worked example: a ₹25,00,000 home loan at 8.5% for 20 years → i = 0.085/12 = 0.007083, N = 240. EMI = 25,00,000 × 0.007083 × (1.007083)240 / ((1.007083)240 − 1) ≈ ₹21,696 per month. Over 240 months you pay about ₹52.07 lakh in total, of which ₹27.07 lakh is interest — more than the loan itself. That is why rate and tenure matter so much.
How to use this emi calculator
- Enter the loan amount you plan to borrow (or your outstanding balance).
- Set the annual interest rate your lender quoted — use the slider for quick what-if checks.
- Pick the tenure in years. Watch how the EMI falls but total interest rises as tenure grows.
- Read the EMI, total interest, and open the schedule to see the balance at any year — useful for planning prepayment.
Smart tips
- A shorter tenure always costs less overall: the same ₹25L loan at 8.5% costs ₹27.1L interest over 20 years but only ₹16.2L over 12 years.
- Even one extra EMI paid every year as prepayment can shave 3–4 years off a 20-year home loan.
- Keep all EMIs combined under 40% of your take-home salary — lenders use a similar cap (FOIR) when approving loans.
- A 0.5% lower rate on ₹25L/20yr saves roughly ₹1.9 lakh — always negotiate or transfer the balance if your rate is above market.
- Track every EMI due date with reminders so you never pay a late-payment penalty or damage your credit score.
Frequently asked questions
How is EMI calculated on a loan?
EMI is calculated with the reducing-balance formula EMI = P×i×(1+i)^N / ((1+i)^N − 1), where P is the principal, i the monthly interest rate and N the number of months. This calculator applies the exact same formula banks use, so the result matches your loan sanction letter.
Does the EMI change if interest rates change?
On a floating-rate loan, lenders usually keep the EMI constant and extend or shorten the tenure when rates move. You can ask the bank to raise the EMI instead, which keeps the tenure fixed and saves interest.
What happens if I prepay part of my loan?
A part-prepayment reduces the outstanding principal immediately, so more of every following EMI goes to principal. On floating-rate home loans in India, banks cannot charge a prepayment penalty to individual borrowers.
Is it better to reduce EMI or reduce tenure after prepayment?
Reducing tenure saves far more interest, because the loan closes earlier. Reduce the EMI only if your monthly budget is genuinely tight.
How much of my salary should go to EMIs?
A safe rule is to keep total EMIs under 35–40% of take-home pay. Beyond that, one salary delay or emergency can break the budget — lenders reject applications above this range for the same reason.
Does this calculator work for home, car and personal loans?
Yes. All standard Indian bank loans use monthly reducing-balance interest, so the same formula applies whether the loan is for a home, car, education or personal use. Only flat-rate loans (some two-wheeler or consumer-durable loans) differ — their real cost is much higher than the quoted flat rate.
Want the theory behind the numbers? Read our EMI & loan guides on the Money Blog.