What is the EMI Calculator?
An EMI (Equated Monthly Installment) calculator tells you the fixed amount you'll pay each month towards a loan — covering both interest and principal — for a chosen tenure. It's the first number every borrower should run before signing a home, car, personal or business loan agreement.
Use it to compare offers from different lenders, see how a small change in interest rate or tenure swings your total interest outflow, and confirm whether the EMI fits inside the safe 30–40% of your monthly take-home rule of thumb.
Our EMI calculator runs entirely in your browser. Nothing you type is sent to any server — there are no logins, no tracking pixels and no API calls. You get instant, deterministic numbers using the same standard amortization formula every bank uses.
Formula
- P — Principal loan amount
- r — Monthly interest rate (annual rate ÷ 12 ÷ 100)
- n — Total number of monthly installments (tenure in months)
Total interest = (EMI × n) − P. Total payment = EMI × n.
Step-by-step example
Setup: ₹30,00,000 home loan at 8.5% p.a. for 20 years.
- Monthly rate r = 8.5 ÷ 12 ÷ 100 = 0.007083
- Months n = 20 × 12 = 240
- (1 + r)ⁿ = 1.007083²⁴⁰ ≈ 5.4555
- EMI = 30,00,000 × 0.007083 × 5.4555 ÷ (5.4555 − 1) ≈ ₹26,035
Answer: EMI ≈ ₹26,035 · Total interest ≈ ₹32,48,400 · Total payment ≈ ₹62,48,400
Pro tips
- A 1% drop in interest on a 20-year ₹30L loan typically saves you ₹4–5 lakh in interest.
- Doubling your tenure does not double your EMI but can nearly double total interest paid.
- Prepaying even 5% of the principal once a year can shorten tenure by 3–4 years.
Frequently asked questions
Does my EMI change if interest rates change?
On a floating-rate loan, the bank usually keeps the EMI constant and adjusts the tenure when rates move. On a fixed-rate loan, neither the EMI nor tenure changes during the lock-in period.
Is the EMI the same every month?
Yes — for any fixed-rate loan the EMI stays constant. What changes is the split: early EMIs are mostly interest, later EMIs are mostly principal.
Can I prepay my loan?
Most home and personal loans allow part-prepayment. Floating-rate home loans have no prepayment penalty for individual borrowers in India; check your sanction letter for fixed-rate or business loan terms.
How much EMI is safe?
A common rule is keeping all EMIs combined below 40% of your monthly take-home salary, leaving room for savings and emergencies.
Is the calculator accurate?
It uses the standard reducing-balance amortization formula every Indian bank uses, so the EMI will match the lender's quote within a rupee or two of rounding.