How to Appeal Your Property Tax in Wisconsin
Wisconsin homeowners can appeal their property tax assessment if they believe it's too high. This guide covers the 2026 appeal deadline, required evidence, and step-by-step process.
2026 Appeal Deadline: First Monday in May
Don't miss your window. Missing the deadline means waiting another full year.
How Wisconsin Assesses Property
Wisconsin assesses residential property at 100% of market value.
Wisconsin assesses property at 100% of full (market) value.
The Appeal Process
Appeals are heard by the Board of Review. An informal review is available before filing a formal appeal.
Assessor (Open Book)
Board of Review
Circuit Court
Wisconsin Appeal Deadline
What Overassessment Costs Wisconsin Homeowners
The median home in Wisconsin is worth $228,000. If your assessment is just 10% too high, you may be overpaying:
~$367/year
Effective tax rate: 1.61% · Median value: $228,000
Check Your Wisconsin Assessment
Enter your address to see your estimated overassessment and Wisconsin filing deadline.
Wisconsin Counties
Dane County
Median: $367,257 · Rate: 1.71%
Deadline: Varies by municipality (Madison: May 15, 2026)
→ View Guide
Eau Claire County
Median: $260,000 · Rate: 1.43%
Deadline: At your municipal Board of Review session (boards convene during the 45 day window beginning the fourth Monday of April per Wis. Stat. 70.47; give the clerk 48 hour notice of intent to object)
→ View Guide
Kenosha County
Median: $182,400 · Rate: 1.93%
Deadline: 48 hours before the first Board of Review meeting; Open Book period typically May 4-22, 2026; formal objection deadline May 22, 2026 at 4:00 PM
→ View Guide
Manitowoc County
Median: $168,126 · Rate: 1.41%
Deadline: 48 hours before the Board of Review's first scheduled meeting (typically held in May or June), or within the first 2 hours of the Board's first meeting with good cause shown
→ View Guide
Milwaukee County
Median: $207,700 · Rate: 1.97%
Deadline: The third Monday in May (May 18, 2026 for the 2026 tax year)
→ View Guide
St. Croix County
Median: $290,750 · Rate: 1.40%
Deadline: Within the first 2 hours of the Board of Review meeting (typically held in May-June 2026)
→ View Guide
Waukesha County
Median: $390,000 · Rate: 1.05%
Deadline: You must provide written or oral notice of intent to file an objection at least 48 hours before the first Board of Review meeting, then file the completed PA-115A form within the first two hours of that meeting
→ View Guide
Wisconsin Guides & Resources
📋 How to Appeal Property Taxes in Wisconsin: Complete 2026 Guide
Complete guide with deadlines, forms, and step-by-step instructions
📋 How Much Can Property Taxes Increase in Wisconsin? 2026 Complete Guide
Wisconsin caps, limits, and protections
🏦 How to Appeal Property Taxes in Escrow in Wisconsin (2026)
Yes, you can appeal even if your lender pays your taxes
🔑 Wisconsin Assesses Inherited Homes Like Any Other, But the Lottery Credit Needs a Fresh Application
Annual assessment with no ownership trigger, the Lottery and Gaming Credit's primary-residence requirement, and small-estate thresholds
👤 Wisconsin's Schedule H Homestead Credit at $24,680 Income (Age 62 or Disabled): A Single Refundable Credit Up to $1,168 With No Senior-Specific Exemption or Freeze
Limited-program state, Schedule H Homestead Credit is the entire state-level senior mechanism
Wisconsin Homestead Credit and Lottery Credit: Two Different Things, Neither Called 'Homestead Exemption'
Wisconsin has no assessed-value homestead exemption. Here's
Property Tax Appeal Resources
Best Appeal Services Compared
7 companies compared, pricing, coverage, and pros/cons for 2026.
2026 Appeal Deadlines
Every state's deadline, filing method, and what happens if you miss it.
Assessment Ratios by State
Every state's assessment percentage, from 4% to 100%, with worked examples.
9 Ways to Lower Your Property Taxes
From homestead exemptions to formal appeals, every method that works.
Savings Calculator
Check if you're overassessed, enter your assessed value to see potential savings.
Flat Fee vs Contingency: Which Saves More?
$49 flat vs 25-50% of savings, see the break-even math at every savings level.
Frequently Asked Questions
How do I appeal my property tax in Wisconsin?
What is the Wisconsin property tax appeal deadline?
What is Wisconsin's property tax assessment ratio?
How much can I save by appealing in Wisconsin?
What evidence do I need for a Wisconsin property tax appeal?
What is the effective property tax rate in Wisconsin?
Ready to Appeal Your Wisconsin Property Tax?
Enter your address for a free overassessment analysis. If the numbers support a appeal, your complete evidence packet is $49.