- File Online for Business Owners Online filing will open February 1, 2021. (Available to businesses who received a postcard in lieu of a full declaration.) Deadline for filing declarations: April 15.
- Online Declarations Frequently Asked Questions
The link above will take you to the Colorado Department of Property Taxation’s website to download declaration forms for all personal property types. These forms must be returned to the Boulder County Assessors Office, or the County within which the assets are located as of 1/1/2021. Please do not mail them to the State of Colorado.