Commonly Used Forms. Business Certificate Order Form, Fill out and complete the PDF to order a copy of a Business Certificate.Search tax forms and instructions. You will need to fill out Form SS-4, the application for employer identification number. Exemption applications must be filed with your local assessor's office. See our Municipal Profiles for your local assessor's mailing address. A single personal property assessment is made for all taxable personal property of the owner located in the city or town. 2. Taxpayers should use these forms and guides to apply for local tax abatements and exemptions and file property returns. The Personal Property Division information page of the SDAT Web site contains links to forms and instructions, brochures, exemptions, tax rate charts and more.