Jackson County homeowners can appeal their assessment until July 13, 2026. How the Board of Equalization works after the county's reassessment turmoil.
Jackson County homeowners can appeal their assessment to the county Board of Equalization until July 13, 2026, with filing open since May 1, 2026. There is no new reassessment in 2026: values carry over from 2025, when a state order capped increases after the county's 2023 reassessment went wrong.
When is the Jackson County property tax appeal deadline?
The 2026 window opened May 1 and closes July 13, 2026, the second Monday in July under Missouri's rule. The county has extended deadlines in some past cycles, but the printed date is the one to plan around. Hearings run by phone, the board can decide on the submitted case if the owner waives attendance, and the county allows a representative to handle the appeal on the owner's behalf.
What happened with the 2023 reassessment?
The 2023 reassessment raised values about 30 percent on average, with some homes up more than 100 percent. Missouri's State Tax Commission ordered increases above 15 percent rolled back, a court agreed in 2025, and the order reached more than 200,000 parcels, roughly three quarters of the county. Voters then recalled the county executive over the episode in September 2025, and in April 2026 the state auditor found the county's appeals process had unfairly disadvantaged taxpayers, with late hearing notices among the failures. Owners whose 2023 value rose more than 15 percent receive automatic credits on their 2026 through 2028 bills.
Does the credit mean your value is now correct?
No. The cap and the credits fixed the size of the increase, not the accuracy of the number underneath it. The value on the books in 2026 is the capped 2025 value rolled forward, and nobody re-examined whether that base matches what the home would actually sell for. An appeal is the only mechanism that tests the value itself, and the 2027 reassessment will build on whatever base survives this cycle, so a correction now counts twice.
Look up if you are overpaying on your Jackson County home.
What evidence do you need for a Jackson County appeal?
The case comes down to what the home was really worth on the valuation date, shown convincingly enough to move a board that hears thousands of appeals. After three turbulent cycles, the county's docket is crowded and the process rewards filings that are complete and correct the first time. Fair Appeal presents the case and manages the property tax appeal through resolution; there is no upfront cost, and if FairAppeal does not reduce your tax, you owe nothing.
How much is at stake?
The median Jackson County home runs about $252,000 and the effective rate is roughly 1.1 percent of market value, so a $25,000 reduction in market value is worth around $275 a year. Kansas City proper tends to run above the county blend, and any reduction also lowers the base the 2027 reassessment starts from.
What is the bottom line on appealing in Jackson County?
The window closes July 13, 2026. The 2026 value is the capped 2025 number, the credits repay the 2023 overcharge without testing the value, and the next reassessment arrives in 2027. County records also show the appeal queue moves slowly, so filing well matters more here than most places.
Related reading: what the Jackson County tax credits actually fix and how appeals work in St. Louis County.