Complete guide
Reviewed July 2026A car loan turns a large one-time price into affordable monthly instalments — but the convenience has a cost, and that cost is easy to underestimate. The EMI you see advertised hides how much total interest you'll pay and how the down payment and tenure quietly reshape the deal.
This calculator gives you the exact monthly EMI for any loan amount, interest rate and tenure using the standard reducing-balance formula lenders use, along with the total interest and a month-by-month amortization schedule. Enter your numbers above; the guide below shows how each lever moves the total cost.
Cars also depreciate while the loan amortizes, so understanding the finance side protects you from the twin traps of a long tenure and a thin down payment — the two choices that cost borrowers the most.
How car loan EMI is calculated
EMI = P x r x (1 + r)^n / ((1 + r)^n - 1) P = loan amount (car price - down payment) r = monthly rate = annual rate / 12 / 100 n = tenure in months
It is the same reducing-balance formula as any other loan: interest each month is charged only on the outstanding balance, so early EMIs are mostly interest and later ones mostly principal. The loan amount is the on-road price minus your down payment - never the full car price.
Worked example
- Car on-road price Rs 10,00,000; down payment Rs 2,00,000; loan Rs 8,00,000.
- Rate 9.5% for 5 years: r = 9.5/12/100 = 0.007917; n = 60.
- EMI = 8,00,000 x 0.007917 x (1.007917)^60 / ((1.007917)^60 - 1) = about Rs 16,801.
- Total paid = 16,801 x 60 = Rs 10,08,060; total interest = Rs 2,08,060 - about 26% of the loan.
- Raise the down payment to Rs 3,00,000 (loan Rs 7,00,000): EMI falls to about Rs 14,699 and total interest drops to about Rs 1,81,895.
What moves the total cost
Longer tenures shrink the EMI but balloon the total interest - and because a car loses value fast, a 7-year loan can leave you owing more than the car is worth for much of the term (negative equity). A larger down payment and the shortest EMI you can comfortably afford are the two most powerful cost-cutters.
| Tenure | Monthly EMI | Total interest | Interest as % of loan |
|---|---|---|---|
| 3 years | Rs 25,644 | Rs 1,23,182 | 15% |
| 5 years | Rs 16,798 | Rs 2,08,060 | 26% |
| 7 years | Rs 13,093 | Rs 3,00,006 | 38% |
Using this calculator and avoiding mistakes
- Enter the loan amount (on-road price minus your down payment), not the sticker price.
- Use the rate your lender quotes; compare offers from banks, NBFCs and the dealer's finance arm.
- Try 2-3 tenures and compare total interest, not just the EMI.
- Keep total EMIs (all loans) under 40-50% of your net income, and confirm the EMI still fits after insurance and running costs.
Common mistakes
- Financing the full price with zero down payment - maximises interest and negative equity.
- Choosing the longest tenure for a low EMI, then paying 35-40% of the loan in interest.
- Comparing loans on EMI alone, ignoring processing fees and mandatory bundled insurance.
- Overlooking prepayment/foreclosure charges - some car loans (especially fixed-rate) levy 3-5%.
- Ignoring that the dealer's 'in-house' finance is often the most expensive option.
Frequently asked questions
Glossary
- EMI
- Equated Monthly Instalment - the fixed monthly payment repaying the loan.
- Down payment
- The upfront amount you pay; the rest is financed.
- Principal
- The financed amount on which interest accrues.
- Reducing balance
- Interest charged on the outstanding balance, not the original loan.
- Negative equity
- Owing more than the car is worth, common with long tenures.
- Tenure
- The loan's repayment period, usually 1-7 years for cars.
- Foreclosure
- Closing the loan early by paying the outstanding balance.
- On-road price
- Ex-showroom price plus taxes, registration and insurance.
Key takeaways
Car loan EMI comes from the reducing-balance formula on the financed amount (price minus down payment). The two levers that cut cost most are a larger down payment and the shortest tenure you can afford - long tenures pay 35-40% of the loan in interest and prolong negative equity on a fast-depreciating asset. Compare lenders on total interest, keep EMIs under 40-50% of income, and get a bank pre-approval before the showroom.
Enter your loan amount, rate and tenure above; then raise the down payment by Rs 1 lakh and watch both the EMI and total interest fall.