Wisconsin
property tax.

Start with your county. Published tax dates and rules link to the official source.

Choose your county
Counties and county equivalents
72
With verified tax information
0

Coverage is growing. A county without verified dates may still have a payment due.

Find your county

0 with published tax information
    72 counties awaiting verification

    Tax dates have not yet been verified for these counties.

    Statewide rules

    ✓ Verified — Last verified October 24, 2026

    Penalty statute

    The 2026 DOR guide describes interest on unpaid property taxes accruing from February 1 at 1% per month. Local penalty details require statutory/local confirmation.

    Official source. Verified .

    Appeal process

    After an informal Open Book review, an owner may appeal the assessment to the municipal Board of Review.

    Official source. Verified .

    Who may represent homeowners

    An agent handling a property-assessment appeal needs prior written owner authorization under Form PA-105.

    Official source. Verified .

    Homestead credit

    2025: full-year Wisconsin resident, 18+ by December 31, household income below $24,680. Owner/renter and earned-income/disability/age conditions and exclusions are detailed in the cited instructions.

    Official source. Verified .

    Official exemption information

    Official exemption information

    Official source. Verified .

    Tools and Census comparisons

    Every county page includes a Census bill estimate and assessment check where usable survey estimates are available.

    Plan around your local rules

    Common questions

    How do property tax appeals work in Wisconsin?

    After an informal Open Book review, an owner may appeal the assessment to the municipal Board of Review.

    Who may represent a homeowner in a Wisconsin property tax appeal?

    An agent handling a property-assessment appeal needs prior written owner authorization under Form PA-105.

    Sources

    www.revenue.wi.gov
    This interest goes back to February 1 and accumulates at the rate of 1% per month.

    Verified October 24, 2026

    www.revenue.wi.gov
    if the property owner is not satisfied with the assessment after attending Open Book, the property owner can bring his/her appeal to the BOR.

    Verified October 24, 2026

    www.revenue.wi.gov
    If an agent is representing the property owner or municipality, the property owner or municipality must provide prior written authorization for the agent to represent the company or municipality when contacting the reviewing authority.

    Verified October 24, 2026

    www.revenue.wi.gov
    homestead credit

    Verified October 24, 2026

    www.revenue.wi.gov
    You are a legal resident of Wisconsin for all of 2025, from January 1 through December 31. You are 18 years of age or older on December 31, 2025. You have less than $24,680 in household income for 2025.

    Verified October 24, 2026