Please use the forms below to file annual reports and personal property returns for years prior to 2020. The Personal Property Division information page of the SDAT Web site contains links to forms and instructions, brochures, exemptions, tax rate charts and more.Extensions of the filing deadline up to 60 days can be granted if the requests are made on or before April. 15th. Visit SDAT to file an extension. Quantify the economic effect of taxing. All Arlington County businesses must file a Business Tangible Personal Property Return each year on or before May 1. Business Personal Property Tax is a tax assessed on tangible personal property businesses own. Tangible Personal Property taxes are billed to businesses within the corporate limits of the Town of Cheverly directly from the Town Treasurer. Therefore, all Arlington County businesses must file a Business Tangible Personal Property Return each year on or before May 1.