For Harris County Appraisal District, most businesses will need to file the general rendition form, 22.15. This type of business personal property is meant to be taxable at the very same tax rate as any real property in Texas.Personal property typically consists of inventory and fixtures used in conducting business, boats, aircraft, farm machinery, motor vehicles and mobile homes. Business Personal Property tax is an ad valorem tax on the tangible personal property that is used for the production of income. Business owners are required to report the value of their personal property each year. This value is used to calculate the amount of tax owed. A rendition is a form that gives the appraisal district information about the business personal property that your business owns. The Texas Property Tax Code requires owners of business personal property (BPP) to annually render those assets used in a business.