132 views Vehicle Information Vehicle purchase price? $ Cash rebate or cash back? $ Sales tax rate? % Trade-In Information Value of your trade-in? $ Amount owed on trade-in? $ Loan Information Loan term (months)? Interest rate? % Down payment amount? $ Printer-friendly version Loan Information Loan Amount Monthly Payment Chart Table Amortization Submit Your monthly car payment depends on the loan amount, interest rate, and term. The loan amount is based on the vehicle’s purchase price and ancillary products, plus sales tax, minus any cash rebate, trade-in value, or down payment. If you’re trading in a vehicle with an existing loan balance, the amount is added to your new loan total.