Estimate the monthly payment on a car loan by entering the vehicle price, your down payment, any trade-in value, the annual interest rate and the loan term in months. The calculator subtracts your down payment and trade-in to find the amount financed, then applies the standard amortization formula to give an accurate monthly figure. It also shows the total interest paid and the total cost of the loan, which helps you judge whether a longer term with a lower monthly payment is actually saving you money or costing more overall. Try shorter terms or a bigger down payment to see how much interest you can avoid. Fees, taxes and insurance are not included. All math runs in your browser.