Auto Loan Calculator
Estimate your monthly car payment with trade-in value, down payment, sales tax, and a full amortization schedule.
Vehicle & Loan Details
Enter your vehicle and loan details, then click Calculate.
How This Calculator Works
The auto loan calculator determines your financed amount by subtracting your down payment and trade-in value from the vehicle price, then adding applicable sales tax. Standard amortization formulas then derive the monthly payment.
Amount Financed = Price + Tax − Down − Trade-in
Monthly Rate = APR ÷ 12 ÷ 100
Payment = Financed × Rate ÷ (1 − (1 + Rate)^(−Term))
Note on sales tax: Tax treatment varies by state. This calculator applies tax to the full vehicle price and rolls it into the financed amount, which is the most common approach. Some states allow trade-in value to reduce the taxable base — consult your dealer for exact figures.