Kansas property owners have two county-level ways to question a valuation: the informal appeal of the spring valuation notice, and a payment under protest filed when the taxes are paid. The Kansas Department of Revenue's guide says an owner may not pay taxes under protest after already appealing the valuation notice on the same property for the same tax year.
The filing window
The county’s appeal portal describes fall payment-under-protest filing as beginning when real-property tax statements are mailed, typically starting November 1. Treasury’s instructions describe a November 1–December 20 window with payment, while the linked application says after November 1.
These sources support a November filing period, but do not conclusively establish that applications will be accepted on Sunday, November 1, 2026. K.S.A. 79-2005(a) ties filing to tax payment and sets the December and escrow deadlines; it does not specify a November 1 opening. Before attempting a first-day submission, confirm the accepted filing date and payment instructions with Treasury at taxinfo@jocogov.org. The weekend rule for filing deadlines does not establish a different opening day.
If at least half of the taxes are paid by an escrow agent, the county says the protest must be filed no later than the following January 31. If taxes are paid after those deadlines, the county says the protest must be filed when the taxes are paid.
Johnson County's official deadline calendar says a filing deadline that falls on a weekend or legal holiday extends to the next business day. December 20, 2026, and January 31, 2027, are both Sundays. Applying that published rule gives Monday, December 21, 2026, for the ordinary December filing deadline and Monday, February 1, 2027, for the qualifying escrow-payment filing deadline. These dates are calculated from the county's calendar rule. Confirm the current payment and submission instructions with the County Treasury when filing.
Who may file
The county states the eligibility rule directly: property owners who have not had a meeting with the County Appraiser on the valuation of their property for the same tax year may file a payment under protest.
Hearing options
After the Treasury processes the form, the county forwards it to the County Appraiser. The county lists three hearing options:
- In person at the County Sunset Drive Office Building, 11811 S. Sunset Drive, Olathe, where owners meet with an appraiser for approximately 20 minutes.
- By telephone, in a conversation with an appraiser.
- A Hearing Based on Evidence for residential owners, which waives the in-person hearing and requires supporting evidence with the application.
The Department of Revenue's guide adds that an owner who begins a payment under protest and abandons it cannot file another protest or any other type of appeal for the same property and tax year.
What FairPath does
FairPath organizes the public record, comparable properties the homeowner selects, and condition facts the homeowner documents into a reviewed evidence packet. The homeowner decides whether to file, files through the official process, and attends any hearing. FairPath does not file, represent the homeowner, or guarantee acceptance, a reduction, savings, or another outcome.
FairPath's Johnson County guide collects the official sources for this jurisdiction and starts with the property address.
Official sources
Original sources reviewed September 13, 2026. Opening-window and deadline wording checked October 18, 2026 against the county portal, Treasury instructions, linked application, official calendar, and K.S.A. 79-2005(a). The calendar confirms the next-business-day deadline rule; the exact first accepted November filing day remains unconfirmed. Confirm current county instructions before filing.