Available Forms: Exemption Forms, Business Personal Property Forms, Other Forms, Human Resources. All forms require the Adobe Acrobat Reader plug-in.Business personal property must be listed for tax purposes on an annual basis. Fill in the business start date, sales tax permit number, and check any boxes that apply. If sold, please fill in the New Owners name. (5) Complete other requested business information. Make any address changes. There are two forms that dealerships must file with their local Appraisal District and the Dallas County Tax Office. The State Auditor's Office and county officials assist local government officials in determining the data necessary to complete the tax rate computations.