Forms to File
Commercial, Agricultural, or Industrial Businesses
Commercial, agricultural, or industrial businesses must file Form ATD25
every year by March 1. If an ATD25 has been filed in a previous year, the Assessor’s Office will mail an ATD25 listing information provided in previous years.
View How to Complete Form ATD25
Oil & Gas Industry
Businesses in the Oil and Gas Industry must file Form ATD39 for Drilling Rig Equipment
and/or Form ATD40 for Oil and Gas Field Equipment
. Instructions for filing out the forms are attached to the forms.
For current information on how to make changes to a received CD with Form ATD39 and/or ATD40, please view Making Changes to Oil & Gas Personal Property Renditions.