Auto Loan Calculator

Adjust vehicle details, loan details, and additional costs by using the sliders, input boxes, and buttons. All calculations update instantly as you adjust the values.

• Vehicle Price: Enter the purchase price of the vehicle before taxes and fees.
• Down Payment: Enter your upfront cash amount or percentage contributed towards the purchase.
• Trade-in Value: Enter the credit value offered by the dealership for your existing vehicle.
• Loan Term: Select your loan duration in months, typically 36, 48, 60, 72, or 84 months.
• Interest Rate: Enter the estimated annual percentage rate (APR) provided by your lender.
• Sales Tax: Enter your local or state vehicle sales tax rate.
• Fees & Registration: Include estimated documentation, title, and state registration costs to capture your true out-of-pocket expense.

After entering your details, you can immediately review your general loan information, monthly payment breakdown, balance over time chart, and a complete amortization schedule.

Your results are organized into four key sections: core summary metrics, a total cost breakdown, a visual balance over time chart, and a full amortization schedule.

• Monthly Payment: The total monthly payment for your loan, including principal and interest.
• Sales Tax: The total state and local sales tax amount added to your vehicle purchase.
• Total Interest paid: The total interest paid during the lifetime of the loan.
• Total Loan Amount: The total amount financed after subtracting your down payment and trade-in value, plus financed taxes and fees.
• Total Cost of Vehicle: The true end-to-end cost of owning the vehicle, combining the purchase price, sales tax, fees, and total interest paid.
• Payoff date: The projected month and year your mortgage balance reaches $0 based on the current term length.
• Total Cost Breakdown: A visual chart showing the percentage distribution between the principle, interest, sales taxes, and fees.
• Balance Over Time: A graphical representation of your remaining balance versus paid principal and interest paid over the loan duration.
• Amortization Schedule: A detailed monthly log breaking down each payment into principal reduction, interest paid, and remaining balance.

The standard formula for calculating the fixed monthly auto loan payment is:

M = P × [ r(1 + r)^n ] ÷ [ (1 + r)^n − 1 ]

Where M is the monthly payment, P is the total loan amount financed, ris the monthly interest rate (APR ÷ 12), and n is the total loan duration in months.

• Monthly Payment: Calculated using the amortization formula above.
• Sales Tax: Vehicle Price × Sales Tax Rate
• Total Interest Paid: (Monthly Payment × Total Months) − Total Loan Amount
• Total Loan Amount: (Vehicle Price − Down Payment − Trade-in Value) + Sales Tax + Fees
• Total Cost of Vehicle: Vehicle Price + Sales Tax + Fees + Total Interest Paid
• Payoff date: Start Date + Loan Term (Months)