- File Online for Business Owners (Available to businesses who received a postcard in lieu of a full declaration.) Deadline for filing declarations: April 15.
|New for 2022 tax year—Boulder County is using a new Online BPP Filing system.
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 1/1/2022. Please do not mail them to the State of Colorado.