How to Calculate EMI: Formula, Worked Examples and 7 Tips to Minimise Loan Cost

Before taking any loan — whether it’s for a home, car, or education — knowing your exact monthly EMI and total interest outgo is essential financial due diligence. This guide gives you the formula, three worked examples, and seven practical strategies to make your loan cheaper.

The EMI Formula

EMI = [P × r × (1+r)^n] / [(1+r)^n − 1]

Where: P = Principal | r = Monthly interest rate (Annual rate ÷ 12 ÷ 100) | n = Loan tenure in months

Example 1: Home Loan

Loan: ₹40,00,000 | Rate: 8.75% p.a. | Tenure: 20 years (240 months)
r = 8.75/12/100 = 0.007292
EMI = [40,00,000 × 0.007292 × (1.007292)^240] / [(1.007292)^240 − 1]
= ₹35,413/month | Total payment: ₹84,99,120 | Total interest: ₹44,99,120

Example 2: Car Loan

Loan: ₹8,00,000 | Rate: 9.5% p.a. | Tenure: 5 years (60 months)
r = 9.5/12/100 = 0.007917
EMI = ₹16,767/month | Total payment: ₹10,06,020 | Total interest: ₹2,06,020

Example 3: Personal Loan

Loan: ₹3,00,000 | Rate: 14% p.a. | Tenure: 3 years (36 months)
r = 14/12/100 = 0.011667
EMI = ₹10,254/month | Total payment: ₹3,69,144 | Total interest: ₹69,144

Skip manual calculation entirely — use our Loan EMI Calculator for instant results and view the full Amortisation Schedule.

7 Tips to Minimise Your Total Loan Cost

Maximise your down payment — every extra rupee upfront reduces principal and therefore all future interest
Choose the shortest tenure you can afford — lower EMI from longer tenure is always more expensive overall
Negotiate the rate before signing — present competing offers; lenders have discretion to match them
Make annual prepayments — even one extra EMI per year dramatically reduces total interest on a 20-year loan
Improve your CIBIL score before applying — 750+ scores unlock the best rates; check with our Credit Score Estimator
Use floating rate loans when rates are high — you benefit automatically when rates fall
Transfer balance to lower-rate lender — if rate gap exceeds 0.5% and significant tenure remains, balance transfer saves lakhs

Related Calculators

Disclaimer: EMI examples are illustrative. Actual amounts depend on lender-specific terms, processing charges, and applicable fees.