Auto Loan Calculator
Estimate your car payment with trade-in, down payment and sales tax.
Sales tax is applied to the price after any trade-in credit. Total cost adds your down payment and trade-in to what you finance.
Free auto loan calculator. Enter the vehicle price, down payment, trade-in, term, APR and optional sales tax to see your monthly car payment, total interest and total cost. Instant and private — runs in your browser.
How to use the Auto Loan Calculator
- 01Enter the vehicle price, your down payment and any trade-in value.
- 02Enter the loan term in months, the APR and your local sales tax rate.
- 03See your monthly payment, total interest and total cost update live.
Frequently asked questions
How is sales tax handled?
Sales tax is applied to the price after subtracting the trade-in value, which is how most US states treat it, and the tax is added to the amount you finance. Set the rate to 0 if tax does not apply.
How does a trade-in lower my payment?
The trade-in value and your down payment are both subtracted from the taxed price to get the amount financed, so a larger trade-in or down payment reduces both the monthly payment and the total interest.
What APR should I use?
Use the annual percentage rate your lender quotes. Rates depend on credit score, loan term and whether the car is new or used, so try a range to see the effect.