Auto Loan Calculator (Amortization, Monthly Payment, Interest)
Plan your car purchase with a fast, private browser-based calculator. Compare terms, rates, and down payments to find a budget-friendly loan.
Estimate monthly auto payments, total interest, and payoff timelines with our free car loan calculator.
Estimate monthly auto payments, total interest, and total amount paid using purchase price, down payment, APR, and loan term. Useful for comparing lender offers before you add dealer fees, taxes, warranties, or trade-in adjustments.
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Estimate a Monthly Auto Loan Payment
Enter four numbers - vehicle price, down payment, APR, and loan term - and this page applies the standard fixed-rate amortization formula to estimate the monthly payment, the total interest, and the total amount paid.
A worked example. A car priced at $28,000 with $4,000 down leaves $24,000 to finance. At 6.5 percent APR over 60 months, the estimate is $469.59 per month, $28,175.25 paid in total, and $4,175.25 of that being interest.
Now run the same loan over 72 months. The payment falls to $403.44, about $66 a month easier to live with. The total climbs to $29,047.56, so interest becomes $5,047.56 - roughly $872 more for the same car. That trade is the whole decision, and it is much easier to judge with both sets of numbers side by side.
Enter the term in months. Lenders quote terms as 36, 48, 60, 72, or 84 months, but a sales conversation may say four years or six years. Convert before you type, or the estimate will be wrong by a wide margin.
What the estimate leaves out. Sales tax, dealer documentation fees, registration, and extended warranties are not added for you, and a trade-in payoff is not netted out. To see them reflected, add them to the vehicle price field so they land in the financed amount. APR also bundles the interest rate with lender fees, so compare the APR rather than the rate when you shop.
How to use it before you talk to a lender. Run at least three cases - a shorter term, a larger down payment, and a lower APR - so you know which lever moves your budget most. A bigger down payment also cuts the chance of owing more than the car is worth. The figure here is a planning estimate, not a financing offer, an approval, or a legal disclosure. The amortization explainer shows how each payment splits between interest and principal, while the mortgage calculator and salary tax calculator handle the other two large lines in a monthly budget.
Key features
- Budget friendly planning: See how increasing your down payment or securing a lower APR drastically reduces your monthly payment.
- True Cost Analysis: See how much interest you pay over the full term, not just the monthly number shown in a sales conversation.
- Flexible Terms: Compare standard 36, 48, 60, and 72-month terms vs. longer 84-month loans to weigh monthly savings against total cost.
- Manual add-on budgeting: Roll taxes, fees, warranties, or other extras into the purchase price when you want to compare a fuller financed amount.
Frequently asked questions
What is a good interest rate for a car loan?
APR depends heavily on credit profile, lender, vehicle type, and term length. Compare offers from at least a bank, credit union, and dealership before assuming the monthly payment is competitive.
How does the loan term affect my payment?
A longer term (e.g., 72 or 84 months) lowers your monthly payment but increases the total interest you pay. A shorter term saves money in the long run.
Why is a down payment important?
A larger down payment reduces the loan amount, which lowers your monthly payment and the total interest paid over the life of the loan. It also prevents you from owing more than the car is worth (negative equity).
Does this calculator include taxes and fees?
Not automatically. Add taxes, dealer fees, registration, or warranties to the "Vehicle Price" field if you want them included in the financed amount.
Is my financial data safe?
Loan inputs are used in your browser and are not uploaded to JW Tool Box. The site separately collects usage information as described in the Privacy Policy.
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