Get information about motor vehicle registration and title transactions. Tarrant County residents can renew vehicle registration.To transfer a Texas titled vehicle, bring in or mail the following to our offices: 1. Create a Loan Payoff Letter online and download it as a PDF or Word document. Customize and print a blank Loan Payoff Letter for free. The Vehicle Payoff Sample Letter form is a crucial document for individuals aiming to transfer their vehicle loan to the State Department Federal Credit Union. Tarrant County's Credit Union offers valuable resources to help you manage your money, find discounts and outside services, and plan for the future. Documents Needed: Title or MCO: Original signatures required. Acceptable ID is required at the time of title transfer. Fails to specify a Type of New Vehicle Floorplan Swing Line Loan in a New Vehicle Floorplan Swing Line Loan Notice or if a Payment Commitment or Payoff Letter.