Boone County Offices will be closed Tuesday, May 8, 2018 for Truman Day.

Assessor Menu

Important Dates

January 1:
The Assessment date, all property is assessed as it exists on this date (except for Taxation upon Occupancy

File Online

March 1:
Last day to file personal property declarations without a penalty.

Mid April & Early May:
Notices of Real Estate Assessment mailed.

End of April through Mid June:
Informal hearings held.

3rd Monday in June:
Deadline to file appeals to the Board of Equalization. The Boone County Board of Equalization has extended the deadline to file until Monday, July 3, 2017 for the 2018 tax year.

July 1:
Certification of Tax Rolls, the Assessor turns all values over to the County Council and taxing jurisdictions.

September 30:
Deadline to file appeals to the Missouri State Tax Commission (or 30 days from BOE decision date).

Personal Property Declarations

Second notices were mailed March 19th, 2018. Return promptly and no penalty will apply.

File Online

RSMo ยง137.345. 3 In the event the taxpayer returns the assessment list to the assessor before May 1st, the penalty described in subsection 1 of this section shall not apply. Click here for more information on avoiding penalties.

Statement of Non-Assessment Information

To obtain a certificate of non-assessment from the Boone County Assessor for Missouri Department of Revenue vehicle registration or license plate renewal you will need one of the following documents:

Plat Books

Plat Book Viewer

Plat books are available for purchase for $35 in the Assessor's Office, as a PDF to download and print, or to view on your mobile device/​PC using the map viewer.

For more details and other interactive maps, visit the viewer information page.

Boone County Assessor

801 E. Walnut St., Rm 143
Columbia, MO 65201-7733


Office(573) 886-4251

Fax(573) 886-4254

Contact Us