A vehicle payment plan agreement is a contract between a buyer and seller of a vehicle that agrees to installment payments. Since the seller is providing the financing, both parties must agree to the downpayment, interest rate (%), and the payment period.

An auto loan agreement is a contract used to secure a loan by a buyer of a motor vehicle. The agreement establishes the names of the borrower and lender, the amount ($) that was borrowed, the length of the loan, how much the borrower needs to pay on a monthly basis, and other important terms.