What forms must be filed? Form 920 is filed with the county auditor in the county in which the business is located.The tangible personal property tax return includes instructions to assist taxpayers in preparing Revenue Forms 62A500, 62A500-A,. Tangible personal property tax exemptions for small businesses is a highly economical way of reducing taxpayer compliance burdens. Did you receive a PT-106 Business Personal Property (BPP) Tax Account Notification? You will need information from this letter to begin filing using MyDORWAY. This guide answers frequently asked questions about property taxes, such as how they are calculated, differences between states, and more.