To transfer a Texas titled vehicle, bring in or mail the following to our offices: 1. County tax assessor-collector offices provide most vehicle title and registration services. Download.Yes, the Texas Department of Motor Vehicle Title and Registration Forms Page has many of the commonly used forms. A Texas bill of sale form records an exchange of property between a buyer and a seller. Using a bill of sale even trade template formalizes a swap while providing an accurate record for vehicle registration and tax purposes.