Your contract will include a clause stating the sale is pending final loan approval. My bank wants purchase agreement or bill of sale before sending out a check to the dealer.Pay vehicle sales tax, prove the sales tax was paid or prove that a vehicle registration is exempt from sales tax. Purchase your next vehicle with a loan from Orange County's Credit Union. Our knowledgeable Associates will guide you through the buying process with ease. As a general rule, contracts don't have to be notarized. With personal loans, the lender makes an agreement with you to finance your car purchase under a specific set of terms and conditions. The final hurdle you face is signing the vehicle purchase agreement; a confusing and convoluted document that we explain in detail here. There's no fee to apply and you'll receive a decision quickly.