Property Tax Appeals in Boone County, Missouri
Boone County homeowners who disagree with their property's assessment start with an informal meeting at the county assessor's office and, if unresolved, file a Board of Equalization Assessment Appeal form with the Boone County Clerk. The Assessor's page sets that filing deadline at the second Monday in July, unless the Board of Equalization extends it, and the county's Important Dates page confirms the 2026 deadline fell on July 13, 2026. That regular 2026 window is closed as of this review, and Boone County has not published an exact 2027 filing date; verify the county's current Board of Equalization guidance before relying on a 2027 filing date. FairPath's owner-guided evidence packet is available for Boone County properties to help organize county records, comparable sales, and condition documentation for the owner's own appeal. It does not attend the informal meeting, file the Board of Equalization form, or represent the owner before the Board or the State Tax Commission.
Assessment context: Boone County's Assessor's Office develops and maintains the county's list of taxable real and tangible personal property and assesses it annually as of January 1, and that assessed valuation forms the tax base the county and its taxing jurisdictions use; the Assessor's Office does not set tax rates. Notices of Real Estate Assessment are mailed mid-April through early May, and informal hearings run from the end of April through mid-June, ahead of the July filing deadline for a formal Board appeal. An owner can confirm the property's parcel identification, classification, and current assessed value through the Assessor's real property search tool before deciding whether to pursue an informal meeting, a Board of Equalization appeal, or both.
Filing process: Step 1 is contacting the assessor's office as soon as the owner is notified of the assessment for an informal meeting, where the owner can learn how the value was set and what records were used; Boone County's page says many disagreements are resolved here. Step 2, if unresolved, is completing the Board of Equalization Assessment Appeal form and returning it to the Boone County Clerk, postmarked by the second Monday in July unless the Board extends the deadline; the Board then hears evidence from both the assessor and the owner about the property's value. Step 3, if the owner is dissatisfied with the Board's decision, is an appeal to the Missouri State Tax Commission by September 30 or 30 days after the Board's final action, whichever is later. Boone County's Important Dates page places certification of the tax rolls on July 1, 2026, before the July 13, 2026 Board filing deadline; it does not establish when the Board acts on a particular appeal.
Evidence to review: Boone County's appeal-process page frames Step 2 around the Board hearing evidence from both the assessor and the owner regarding the property's value, without listing specific document categories on that page itself. An owner should use the Step 1 informal meeting to learn which factors and records the assessor relied on, since that meeting is described as resolving many disagreements before a formal appeal is needed. FairPath can help an owner organize county parcel records, comparable sales, and condition documentation ahead of either the informal meeting or the Board of Equalization hearing; it does not attend the meeting or hearing, select the value the owner presents, or predict the Board's or the Commission's decision.
Current deadline guidance: July 13, 2026. Boone County's Assessor page states that the Board of Equalization Assessment Appeal form must be returned to the Boone County Clerk postmarked by the second Monday in July, unless extended by the Board of Equalization, consistent with Missouri Revised Statutes Chapter 137. The county's Important Dates page confirms that the 2026 deadline fell on Monday, July 13, 2026. The regular 2026 window is closed as of this review. The county has not published an exact 2027 filing schedule, so a specific 2027 date is not stated here; verify the county's current Board of Equalization guidance before relying on a 2027 filing date.
Boone County's Board of Equalization deadline can be extended by the Board itself, so an owner should confirm the current year's actual cutoff on the Assessor's Important Dates page rather than assuming the second Monday in July always controls without exception.
The informal meeting in Step 1 is described as resolving many disagreements before a formal appeal, so an owner should treat it as a substantive opportunity to review the assessor's records and factors rather than a formality on the way to the Board.
Boone County's Important Dates page places 2026 tax-roll certification on July 1, before the July 13 Board of Equalization filing deadline; an owner should still follow the Board's published filing deadline and confirm the current-year schedule.
The Missouri State Tax Commission appeal deadline of September 30 or 30 days after the Board's final action, whichever is later, means the actual date an owner must meet depends on when Boone County's Board rules on that specific appeal.
Official filing authority: Boone County Board of Equalization. https://www.boonemo.gov/assessor/real-property/appeal-process.asp
Source: Boone County Assessor, Boone County, Missouri, Important Dates, https://www.boonemo.gov/assessor/important-dates.asp. Reviewed 2026-09-22.
Source: Boone County Assessor, Boone County, Missouri, Assessment Appeal Process, https://www.boonemo.gov/assessor/real-property/appeal-process.asp. Reviewed 2026-09-22.
Source: Missouri Revisor of Statutes, Missouri Revised Statutes Chapter 137, https://revisor.mo.gov/main/OneSection.aspx?section=137.385. Reviewed 2026-09-22.
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