Your county may have a website to download real and personal property tax forms. Property tax forms should be returned to your county tax officials.THE BUSINESS PERSONAL PROPERTY TAX RETURN IS A DEPARTMENT OF REVENUE FORM PT-. 50P. Business Personal Property assets must be reported on form PT-50P. The return is available on the forms and applications page or click here. It prepares personal property tax returns. A property tax return must be filed with the Tax Assessor's Office annually, prior to April 1. Tax returns are mailed out in January. Forms must be completely filled out. Filing is available January 1st to April 1st of each year.