This calculator estimates your monthly car payment. To use it: In "Car Price," enter the total price of the car in dollars. In "Loan Terms" enter the term in months of your car loan. In "Interest Rate" enter the interest rate of the loan. In "Down Payment" enter the down payment you're making in dollars. Do not use commas. Then press "Compute" and look for the estimated monthly payment you need to make to repay the loan. 1 Car Price 2 Loan Term (# Mths) 3 Interest Rate(%) 4 Down Payment = Your Monthly Payment* * Payment does not include tax, title and license.