Columbia County property tax appeal 2027: deadline, forms and how to file
To appeal a Columbia County assessment, file with the Municipal Board of Review; in Wisconsin the deadline is 48 hours before the Board of Review's first meeting, usually in spring, for the notice of intent to object. Confirm the exact date on your notice or with the assessor; we add each county's 2027 date here when it is published.
Data as of 20 Oct 2026 · the Columbia County assessorCheck your own assessment
Free. We compare the value on your notice with recent sales of similar homes nearby and tell you whether an appeal is worth filing. Have your assessment notice and tax bill handy.
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How to file in Columbia County
- Step 1
File the appeal
Use the method your notice lists, by the deadline on the notice.
- Step 2 · before the hearing
Prepare and submit your evidence
Comparable assessed values, photographs of condition issues and recent sales where they are public. Ask the appraisal office for the evidence it will use.
- Step 3
Meet, then hear
An informal review usually comes before a formal hearing; most reductions happen at the informal stage.
Before you file: how to read your notice · evidence that works · informal vs formal hearing · when not to appeal
Columbia County questions
Data as of 20 Oct 2026 · Wisconsin statutesWhen is the property tax appeal deadline in Columbia County?
Wisconsin law sets it: Notice of intent to object at least 48 hours before the Board of Review’s first meeting, and the written objection (form PA-115A) within the first 2 hours of that meeting (Wis. Stat. §70.47(7)(a)); the Board meets in the 45 days from the 4th Monday of April (§70.47(1)). Confirm the exact date on your notice or with the assessor.
Who hears a appeal in Columbia County?
The Municipal Board of Review hears the first appeal. Filing rules: Wis. Stat. §70.47(7).
What value should I compare on my Wisconsin notice?
Wisconsin notices often do not show a market value; compare the assessed value (“Total”) with what similar homes sold for, as of Close of January 1 of the assessment year (Wis. Stat. §70.10).
Check whether yours is over-assessed
Nearby counties
Marquette County · Green Lake County · Dane County · Sauk County · Dodge County · Adams County · Jefferson County
- Wis. Stat. ch. 70 (general property)
- Wis. Stat. ch. 77 (real estate transfer fee)
- WI DOR, Notice of Changed Assessment (PR-301)
- WI DOR, Guide for Property Owners (PB-060)
- U.S. Census Bureau, county population estimates (2024) and county gazetteer (2024).