Wisconsin Property Tax Appeal:
How to Fight Your Over-Assessment
In Wisconsin, 46% of appeals succeed with an average savings of $880/year. Yet fewer than 5% of homeowners ever file. Here’s how to do it — and how Tax Ghost generates your formal appeal letter for $24.99.
Wisconsin Property Tax Appeal — Key Facts
How to Appeal in Wisconsin
Check your assessment notice
Your county assessor mails assessment notices — usually in spring. The notice shows your assessed value and the appeal deadline. In most states you have 30–90 days from the notice date.
Gather comparable sales
Find 3–5 similar properties in your neighborhood that sold recently at prices below your assessed value. Use Zillow, Redfin, or your county recorder's public records. The more recent and similar the sales, the stronger your case.
File your formal appeal
In Wisconsin, you file with the Municipal Board of Review. Appear or file written objection at the Board of Review session. Wisconsin municipalities hold annual Board of Review sessions in May–June where assessments can be challenged. File before Board of Review session (typically May–June).
Present your evidence at the hearing
Show up with your comparables. Be calm and factual. You don't need a lawyer. Appeals boards are accustomed to homeowners representing themselves. Simply demonstrating that comparable properties sold for less than your assessment is often enough to win a reduction.
Expert tip for Wisconsin
Wisconsin requires you to specify the grounds for your objection in writing before the hearing. Generic objections are dismissed — be specific about the comparable sales.
Get your Wisconsin appeal letter — $24.99
Formal appeal letter citing Wis. Stat. § 70.47, addressed to the Municipal Board of Review. Evidence checklist and filing instructions included. PDF delivered in 60 seconds.
Free scan → pay only if you want the letter
Frequently Asked Questions
How do I appeal my property tax assessment in Wisconsin?
In Wisconsin, you file an appeal with the Municipal Board of Review. The deadline is Board of Review session (typically May–June). You can file yourself — no attorney required. Appear or file written objection at the Board of Review session. Wisconsin municipalities hold annual Board of Review sessions in May–June where assessments can be challenged.
What is the property tax appeal success rate in Wisconsin?
Approximately 46% of property tax appeals in Wisconsin result in a reduced assessment. The average annual tax savings for successful appeals is around $880.
What evidence do I need to win a property tax appeal in Wisconsin?
The strongest evidence is 3–5 recent comparable sales in your neighborhood with sale prices below your assessed value. An independent appraisal is also very effective. You can find comparables on Zillow, Redfin, or your county recorder's public records.
What law governs property tax assessments in Wisconsin?
Property tax assessments in Wisconsin are governed by Wis. Stat. § 70.47. Under this law, property must be assessed at fair market value — defined as what a willing buyer would pay a willing seller in an arm's-length transaction.
Do I need a lawyer to appeal my property taxes in Wisconsin?
No. The vast majority of successful Wisconsin property tax appeals are filed by homeowners without attorneys. You simply need to file your appeal before the deadline and present evidence (comparable sales) showing your property's market value is lower than the assessed value.