Which forms will I need to file? For Harris County Appraisal District, most businesses will need to file the general rendition form, 22.15.You must apply to HCAD for any exemptions for which you qualify. This file provides the necessary form for reporting tangible personal property for tax purposes. All income producing tangible personal property is taxable for county appraisal district purposes. Taxable personal property includes equipment and inventory. Who must file a rendition? No information is available for this page. HCAD Offers Virtual Business Personal Property Rendition Help. For Harris County Appraisal District, most businesses will need to file the general rendition form, 22.15.