Auto Loan Calculator
Free auto loan calculator. Estimate your monthly car payment including sales tax, fees, down payment and trade-in, plus the total loan cost and interest.
Vehicle & Financing
Monthly Payment
$644.70
Cost Breakdown
How It Works
Enter the vehicle price
Type the negotiated price of the car, then add any down payment and trade-in value you are putting toward it.
Add tax, fees and loan terms
Enter your sales tax rate, any registration or dealer fees, the loan term in months and the interest rate (APR).
Review your payment
See your estimated monthly payment, the financed loan amount, sales tax, total interest and the total cost of the car.
An auto loan lets you finance a vehicle and repay it in fixed monthly installments, usually over 36 to 72 months. The amount you actually borrow depends not only on the sticker price but also on sales tax, dealer and registration fees, and how much you reduce the balance with a down payment or trade-in.
This calculator brings all of those pieces together so you can see your real monthly payment and the true total cost of the car. Adjust the term, rate, down payment and trade-in to find a payment that fits your budget — and to understand how much extra a longer loan really costs in interest.
Frequently Asked Questions
How is the financed loan amount calculated?
The loan amount equals the vehicle price plus sales tax and fees, minus your down payment and trade-in value. Sales tax is applied to the price less your trade-in, since most states tax only the difference. The result is floored at zero.
Is sales tax charged on the trade-in?
In most U.S. states you only pay sales tax on the price after your trade-in is deducted, which can save you money. This calculator follows that rule: tax = (price − trade-in) × tax rate. Check your local rules, as a few states tax the full price.
How does a bigger down payment affect my payment?
A larger down payment (or trade-in) reduces the amount you finance, which lowers both your monthly payment and the total interest you pay over the life of the loan. It can also help you qualify for a better interest rate.
What is included in the total cost?
The total cost combines everything you pay for the car: all monthly payments over the term plus your down payment and trade-in value. It reflects the full out-of-pocket cost including financed sales tax, fees and interest.
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