Auto Loan Calculator – Monthly Payment and Total Cost
The Auto Loan Calculator helps car buyers calculate their monthly payment and total financing cost for a vehicle purchase. Enter the car price, down payment, trade-in value, sales tax, interest rate, and loan term — and get the loan amount, monthly payment, total payment, total interest, and complete all-in car cost. Ideal for new and used car buyers comparing financing options before visiting a dealership. Formula based on standard auto loan amortization calculations. Results are for planning purposes. Confirm final terms with your lender or dealership before committing.
Formula
This calculator applies standard financial equations and cash-flow relationships using the provided inputs.
Quick Tip
Adjust one variable at a time to understand payment and total-cost sensitivity.
Before you sign anything at the dealership, know your numbers. Enter the car price, down payment, trade-in, and loan details — and this tool shows exactly what your monthly payment and total cost will be.
Featured Answer
Q: How do I calculate my monthly auto loan payment?
A: Monthly auto loan payment uses the standard amortization formula: payment = loan amount × monthly rate × (1 + monthly rate)^months / ((1 + monthly rate)^months − 1). For a ₹8,00,000 car loan at 9% for 60 months, the monthly payment is approximately ₹16,600. Use this calculator to see your payment, total interest, and full car cost instantly.
How to Use Auto Loan Calculator
- Enter the car price — the purchase price of the vehicle before any adjustments.
- Enter the down payment — the upfront cash you are contributing towards the purchase.
- Enter the trade-in value — the amount your existing vehicle will be credited towards the new purchase, if applicable.
- Enter the sales tax percentage — the applicable tax rate on the vehicle purchase in your state or region.
- Enter the interest rate — the annual rate your lender offers on the auto loan.
- Enter the loan term in months — typically 36, 48, 60, or 72 months.
What is an Auto Loan Payment?
An auto loan payment is the fixed monthly instalment you pay to repay a vehicle financing loan. Like a home loan, each payment covers the monthly interest charge and a portion of the outstanding principal.
The loan amount for a car purchase is calculated as: Loan amount = (car price + sales tax) − down payment − trade-in value
This adjusted loan amount is what the monthly payment and total interest calculations are based on — meaning your trade-in and down payment have a direct, compounding effect on everything else.
The total car cost output is particularly eye-opening — it adds down payment, trade-in value foregone, and total loan payments together to show the complete financial picture of the purchase.
For Indian car buyers, interest rates typically range from 8.5% to 12% depending on the lender and credit profile.
Example: Car price ₹9,50,000, down payment ₹1,50,000, trade-in ₹1,00,000, sales tax 5%, rate 9.5%, 60-month term.
| Field | Value |
|---|---|
| Loan Amount | ₹7,47,500 |
| Monthly Payment | ₹15,720 |
| Total Interest | ₹1,93,200 |
| Total Payment | ₹9,43,200 |
| Total Car Cost | ₹12,43,200 |
Auto Loan Planning: What Your Car Really Costs Over the Loan Term
Why Auto Loan Calculator Matters
Car purchases are the second-largest financial commitment most households make after a home. Yet many buyers focus almost entirely on the monthly payment — without checking the total interest, total payment, or all-in cost.
Dealerships know this. Financing conversations at the showroom often revolve around "how much per month can you afford?" — stretching the loan term to make the monthly figure comfortable, while the total cost quietly expands.
The Auto Loan Calculator brings the full picture into view before any conversation with a dealer or lender. You see the loan amount, monthly payment, total interest, total payment, and the real all-in cost of the vehicle — including your down payment, trade-in credit, and all financing costs.
How to Calculate Auto Loan Monthly Payment — Step by Step
- Calculate adjusted loan amount: (car price × (1 + tax rate)) − down payment − trade-in value.
- Convert annual rate to monthly rate: annual rate ÷ 12 ÷ 100.
- Apply amortization formula: payment = loan × monthly rate × (1 + monthly rate)^n / ((1 + monthly rate)^n − 1), where n = months.
- Total payment: monthly payment × loan term months.
- Total interest: total payment − loan amount.
- Total car cost: total payment + down payment + any trade-in credits used.
Real-World Example
Comparing three loan term options for the same car purchase.
| 36 Months | 48 Months | 60 Months | |
|---|---|---|---|
| Car Price | ₹10,00,000 | ₹10,00,000 | ₹10,00,000 |
| Down Payment | ₹2,00,000 | ₹2,00,000 | ₹2,00,000 |
| Loan Amount | ₹8,00,000 | ₹8,00,000 | ₹8,00,000 |
| Interest Rate | 9.5% | 9.5% | 9.5% |
| Monthly Payment | ₹25,620 | ₹20,050 | ₹16,800 |
| Total Interest | ₹1,22,320 | ₹1,62,400 | ₹2,08,000 |
| Total Payment | ₹9,22,320 | ₹9,62,400 | ₹10,08,000 |
Choosing 60 months over 36 months saves ₹8,820 per month but costs an extra ₹85,680 in total interest. Worth evaluating carefully.
Common Mistakes to Avoid
- Focusing only on monthly payment — dealers can reduce monthly payment by extending the term. Always check total interest, not just the monthly number.
- Not including sales tax in the loan amount — in many states, sales tax is financed as part of the loan, not paid upfront. Include it for an accurate loan amount.
- Overvaluing the trade-in at the dealership — dealer trade-in offers are often below market value. Check the actual trade-in value on independent platforms before accepting.
- Ignoring the insurance and maintenance costs — the monthly loan payment is not the full cost of owning the car. Insurance, fuel, maintenance, and registration fees add substantially to the real monthly cost.
- Accepting dealer financing without comparing — dealer-arranged financing often has higher rates than direct bank or NBFC financing. Get at least one independent quote before accepting the dealership's offer.
When to Use This Calculator
Use this tool before visiting any showroom — to know your numbers before any negotiation begins. Also use it when comparing two vehicles at different price points to see the real monthly and total cost difference.
For bike purchases, the Bike EMI Calculator gives the same analysis for two-wheelers. For a general loan payment comparison, the Home Loan Calculator covers property financing.
Pro Tips
Loan amount — this is your actual debt after all credits. Always verify this figure matches what the dealer or lender is quoting before signing.
Monthly payment — check that this stays comfortably within 15–20% of your monthly take-home pay. Most financial guidelines suggest keeping total vehicle costs (loan + insurance + fuel) below 20% of income.
Total interest — compare this across different terms and rates. The interest saved by choosing a shorter term or lower rate is often several thousand rupees.
Total car cost — this is the definitive measure of affordability. It includes everything: the car's price, tax, your down payment, and all financing charges.
Important Assumptions and Limitations
This calculator assumes a fixed interest rate for the full loan term. Actual rates offered depend on credit score, lender policies, and current market conditions. Processing fees, documentation charges, and insurance premiums are not included. Calculation method reviewed against standard auto loan amortization formula references.
Results are for planning and estimation purposes. Confirm figures with your lender before making decisions.
Frequently Asked Questions
Find answers to common questions about Auto Loan Calculator
An auto loan payment is the fixed monthly instalment paid to a lender to repay a vehicle financing loan. Each payment covers the monthly interest charge and reduces the outstanding loan balance. The payment is determined by the loan amount (car price minus down payment and trade-in), the interest rate, and the loan term in months.
Use the amortization formula: payment = loan × r × (1+r)^n / ((1+r)^n − 1), where r is the monthly interest rate and n is the number of months. For a ₹8 lakh loan at 9.5% for 60 months: r = 0.00792, n = 60, monthly payment ≈ ₹16,800. This calculator computes it automatically with all inputs including tax and trade-in.
The calculator gives accurate payment, interest, and total cost figures for fixed-rate auto loans based on your inputs. It does not include processing fees, documentation charges, or insurance premiums, which vary by lender. Always verify the final loan amount and interest rate with your bank or dealership before signing any financing agreement.
Total car cost is the complete all-in financial cost of the vehicle purchase — including the down payment, trade-in value contributed, and all loan payments (principal plus interest) over the full term. It represents what the vehicle actually costs you from a cash perspective, not just the sticker price, which often understates the true financial commitment.
Use it before visiting a showroom — knowing your exact monthly payment and total cost gives you a confident position in any financing negotiation. Use it again when comparing two financing offers with different rates or terms. And use it when deciding between a longer term with lower monthly payments vs a shorter term that saves significantly on total interest.
Auto loan interest rates in India typically range from 8.5% to 12% for salaried individuals with good credit profiles. Public sector banks often offer the lowest rates; private banks and NBFCs may be slightly higher but with faster processing. A CIBIL score above 750 generally qualifies for the best available rates from most lenders.
Yes. Enter the agreed purchase price of the used car, your down payment, the applicable interest rate (used car loan rates are typically 0.5–2% higher than new car rates in India), and your preferred loan term. The calculation is identical — loan amount, monthly payment, total interest, and total cost are computed the same way regardless of whether the vehicle is new or used.
A longer loan term reduces monthly payments but significantly increases total interest paid. For example, on a ₹8 lakh loan at 9.5%, a 36-month term has a monthly payment about ₹8,800 higher than a 60-month term — but saves over ₹85,000 in total interest. The monthly payment convenience of a longer term always comes at a meaningful total cost premium.