TheCalculatorVault

Car Loan Calculator

Work out your car loan’s monthly payment, total interest and total cost — from the vehicle price, down payment, trade-in, interest rate and term — with the financed amount, a full amortisation schedule and a principal-vs-interest breakdown, all updated live as you type.

Currency

Amount financed: ₹20,00,000.00= price − down payment − trade-in (never below zero)

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Loan tenure
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Car-loan figures are estimates using the reducing-balance method and exclude dealer fees, registration and road tax, insurance, GAP cover and extended warranties. Confirm exact figures with your lender. See our Terms.

What a car loan calculator tells you

Financing a vehicle is rarely just the sticker price. A car loan calculator works out the three numbers that actually shape your budget: the equal monthly payment, the total interestyou will pay over the term, and the total cost of the loan once every instalment is added up. Change the price, the down payment, a trade-in, the interest rate or the term and these figures update live, so you can compare a dealer's in-house finance offer against a bank loan in seconds.

From sticker price to the amount you finance

You almost never borrow the full price of the car. Two things reduce it before the loan even starts: the cash you pay up front (the down payment) and the value of any car you trade in. The amount you actually finance — the principal the interest is charged on — is:

Financed principal = vehicle price − down payment − trade-in

That figure is floored at zero: if your down payment plus trade-in covers or exceeds the price, there is nothing left to finance and the monthly payment is zero. Both levers work the same way — every rupee you put down (or trade in) is a rupee you do not borrow, and a rupee the lender does not charge you interest on.

How the monthly payment is calculated

Car loans use the reducing-balance method, the same amortisation maths behind a home or personal loan EMI. Interest is charged only on the outstanding balance, so the payment is fixed by:

M = P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ − 1)

where P is the financed principal, r is the monthly interest rate (the annual rate divided by 12 and by 100), and n is the number of monthly payments. Because the balance falls a little with each instalment, early payments are mostly interest and later ones are mostly principal — even though the payment itself never changes. The final instalment absorbs any rounding so the balance lands exactly at zero.

0% APR promotions: when the rate is zero the formula collapses to M = P ÷ n — the financed amount split evenly across the term, with no interest at all. Always check whether a “0%” offer is genuine or comes with a higher price or a shorter list of eligible models.

Worked example

Generated by the same engine that powers the calculator, using the default scenario above.

StepValue
Vehicle price₹25,00,000
Down payment₹5,00,000
Trade-in value₹0
Amount financed (P)₹20,00,000
Interest rate9.5% per year
Tenure5 years (60 months)
Monthly payment₹42,004
Total interest₹5,20,223
Total cost (financed)₹25,20,223

How a bigger down payment changes the loan

A down payment is the single most direct way to cut the cost of financing. Because it reduces P, it lowers both the monthly payment and the total interest in proportion. The table below holds the price, rate and term fixed and only changes the down payment:

Down paymentAmount financedMonthly paymentTotal interest
₹0₹10,00,000₹21,002₹2,60,112
₹1,00,000₹9,00,000₹18,902₹2,34,101
₹2,00,000₹8,00,000₹16,801₹2,08,089
₹3,00,000₹7,00,000₹14,701₹1,82,078

For a ₹10,00,000 car at 9.5% p.a. over 5 years. Every rupee of down payment removes a rupee of financed principal — and the interest that principal would have earned the lender.

How the term changes your payment

Stretching a car loan over more months makes each payment smaller, but you owe the balance for longer, so the total interest climbs. Car loans typically run three to eight years; this calculator caps the term at 96 months (eight years). The trade-off, for the same financed amount:

TenureMonthly paymentTotal interest
3 years₹25,626₹1,22,549
4 years₹20,099₹1,64,728
5 years₹16,801₹2,08,089
6 years₹14,620₹2,52,622
7 years₹13,075₹2,98,316

For an ₹8,00,000 financed amount at 9.5% p.a. A longer term shrinks the monthly payment but raises the total interest you pay.

Dealership financing vs. going direct to a bank

When you buy a car on finance you generally have two sourcing options, and comparing them costs nothing except a little time:

  • Direct lending — you apply to a bank, credit union or online lender before visiting the showroom and get a pre-approved rate. Arriving with pre-approval means you already know your ceiling; you can negotiate the car price independently of the financing, and you have a concrete benchmark to measure any dealer offer against.
  • Dealership financing — the dealer arranges the loan through its own network of lenders. It is convenient and sometimes carries manufacturer-subsidised rates on new models (including genuine 0% APR promotions). The catch is that the dealer may mark up the rate above what the lender actually requires, pocketing the difference as profit.

The practical approach: get at least one direct quote first, then let the dealer try to beat it. Use this calculator to run both scenarios side by side — paste in the dealer's offered rate and your bank's rate, and compare the total interest column to see which deal actually costs less.

What this calculator does not include

To keep the numbers honest, the calculator models only the loan itself — principal and interest. Real on-road costs that it does not add for you include:

  • Dealer handling, documentation and processing fees
  • Registration, road tax and number-plate charges
  • Motor insurance and any GAP (guaranteed asset protection) cover
  • Extended warranty or service packages bundled into the deal

If your lender rolls any of these into the financed amount, add them to the vehicle price so the payment reflects what you will actually owe. The model also assumes a fixed rate, equal monthly payments and no prepayment, balloon or deferred-payment structures.

Frequently asked questions

How does a car loan calculator work?+

It takes the vehicle price minus your down payment and any trade-in value to get the financed amount, then applies the reducing-balance formula M = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1) to find your equal monthly payment, total interest and total cost over the loan term.

What is the financed amount on a car loan?+

The financed amount (the principal you actually borrow) is the vehicle price minus your down payment minus any trade-in value, floored at zero. A bigger down payment or trade-in lowers the principal and the total interest you pay.

How is the monthly car payment calculated?+

Using the auto-loan EMI formula M = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1), where P is the financed amount, r is the monthly interest rate (annual rate ÷ 12 ÷ 100) and n is the number of monthly payments. At 0% interest the payment is simply the principal divided by the number of months.

How does a down payment affect my car loan?+

A larger down payment reduces the amount you finance, which lowers both your monthly payment and the total interest paid over the life of the loan. It can also help you qualify for a better rate.

Does a trade-in reduce my car loan?+

Yes. The trade-in value is applied to the purchase the same way a down payment is — it lowers the financed principal directly, so you borrow less and pay less interest.

What is a good interest rate on a car loan?+

Auto-loan rates depend on your credit, the lender, the loan term and whether the car is new or used. This calculator works with whatever annual rate you enter, so you can compare offers side by side by changing the rate.

Should I choose a longer or shorter car loan term?+

A longer term lowers your monthly payment but increases the total interest you pay. A shorter term means higher monthly payments but less interest overall. Try a few terms in the tenure field to see the trade-off.

What is reducing-balance amortisation on an auto loan?+

Interest is charged only on the outstanding balance, which shrinks with every payment. So early payments are mostly interest and later ones are mostly principal, even though the monthly payment stays the same. This calculator generates the full month-by-month schedule.

What happens at 0% APR on a car loan?+

With a promotional 0% APR there is no interest, so the monthly payment is just the financed amount divided by the number of months, and the total interest is zero.

Does this calculator include taxes, fees and insurance?+

No. It models only the loan principal and interest. Dealer fees, registration and road tax, insurance, GAP cover and extended warranties are not included unless you roll them into the vehicle price yourself.

Is the car loan formula the same as a home loan or personal loan?+

Yes — the reducing-balance EMI formula is identical. Only the typical loan amount, interest rate and tenure differ. Car loans usually run 3 to 8 years, shorter than home loans.

How much interest will I pay over the life of a car loan?+

Total interest is the sum of all monthly payments minus the financed principal. The calculator shows this figure directly, and the amortisation schedule breaks down how much interest you pay each month.

Can I pay off a car loan early?+

Most car loans allow early repayment, and doing so reduces the total interest you pay because interest is charged on the outstanding balance — the sooner that balance reaches zero, the less interest accrues. Check your loan agreement first: some lenders include a prepayment penalty, though this is less common on standard reducing-balance auto loans. This calculator models a fixed schedule; to see how early payoff helps, simply reduce the tenure and compare the total interest figures.

Can I refinance a car loan?+

Yes. Refinancing means taking a new loan — ideally at a lower rate or shorter term — to pay off the existing one. It makes most sense early in the loan when the outstanding balance is still high and the interest saving is largest. Use this calculator to compare your current monthly payment and total interest against what a new rate or term would produce, then factor in any refinancing fees before deciding.

Should I arrange financing through the dealer or go directly to a bank?+

Both routes have merit. Going directly to a bank or credit union first gives you a pre-approved rate you can use as a benchmark — if the dealer can beat it, take the dealer deal; if not, use your own financing. Dealer financing can be convenient and sometimes carries manufacturer-subsidised rates on new models, but the interest rate may be marked up. Getting at least one independent quote before you walk into the showroom puts you in a stronger negotiating position.

How much car can I afford?+

A widely cited guideline is the 20/4/10 rule: put at least 20% down, finance for no more than four years (48 months), and keep total monthly vehicle costs — loan payment, insurance, fuel and maintenance — below 10% of your gross monthly income. It is a rule of thumb rather than a hard limit, but it helps prevent a vehicle purchase from crowding out other financial goals. Use the tenure and down-payment fields here to find a combination that fits your budget.

Sources

Formula and data last reviewed by the TheCalculatorVault team on 26 June 2026. Figures are for general information, not professional advice.