Property tax rates in Wisconsin average an effective 1.32% of home value, the 10th highest burden in the nation on owner-occupied housing.1Tax Foundation. Property Taxes by State and County, 2026 What you actually pay depends on where you live: combined local mill rates run from around 12 mills in a rural township to over 30 mills in some cities.2Price County, WI. Property Tax Rates for 2025 Payable in 2026 The bill you receive is the product of two numbers — your assessed value and the combined mill rate — minus a handful of state credits.
How the Mill Rate Works
Wisconsin expresses property tax rates in mills. One mill is one dollar of tax per $1,000 of assessed value.3Wisconsin State Legislature. Property Tax Administration A 19-mill rate on a home assessed at $250,000 produces a gross tax of $4,750 before any credits are applied.
No single body sets that 19-mill figure. Four taxing jurisdictions typically appear on a Wisconsin bill: the county, the city or town, the school district, and the technical college district. Each calculates its own rate by dividing its levy by the total assessed value inside its boundaries, and the four rates stack. Two homes with identical assessments in the same county can carry noticeably different bills because one sits in a higher-spending school district or a municipality with more debt.
Why Rates Shift From Year to Year
State law limits how fast local levies can grow. Under Wis. Stat. § 66.0602, counties, cities, villages, and towns generally cannot raise their levy by more than the percentage change in equalized value from net new construction in the jurisdiction.4Wisconsin State Legislature. Wisconsin Code 66.0602 – Local Levy Limits No new construction, no allowable increase. To exceed the cap, a local government must win a referendum.5Wisconsin Department of Revenue. County and Municipal Levy Limits
School districts follow a separate revenue limit rather than § 66.0602, but the mechanism is similar: exceeding the formula requires voter approval. The practical effect is that mill rates tend to drift rather than jump, unless a referendum passes or new construction meaningfully changes the tax base.
How Your Property Is Valued
The other side of the equation is assessed value. Wisconsin assessors are required to value real property at “full value,” which is what a willing buyer would pay a willing seller in an open-market transaction.6Wisconsin Department of Revenue. Property Assessment Information Recent arm’s-length sales of comparable properties do most of the work, along with property condition and location.
Not every municipality reassesses annually. Some go years between full revaluations, so assessed values can drift above or below actual market prices. To keep shared taxes and state aid fair across the state, the Wisconsin Department of Revenue calculates equalized values that put every municipality on a common level regardless of when it last reassessed.
When your assessment changes, you receive a notice of changed assessment. That notice starts the clock on any challenge you plan to make.
Challenging an Assessment
If you think your value is too high, the formal path runs through the local Board of Review under Wis. Stat. § 70.47. You must notify the board’s clerk at least 48 hours before its first scheduled meeting that you intend to object, and file a written objection within the first two hours of that meeting.7Wisconsin State Legislature. Wisconsin Code 70.47 – Board of Review The board can waive these deadlines in extraordinary circumstances, but that’s a gamble.
At the hearing you testify under oath, provide written land and improvement values with your supporting information, and fully disclose all assessable property you own in the district. The board presumes the assessor’s number is correct, so you carry the burden of proof.7Wisconsin State Legislature. Wisconsin Code 70.47 – Board of Review Recent comparable sales showing similar homes at lower values are the workhorse evidence. A professional appraisal (roughly $300 to $750) strengthens the case. Before going formal, contact the assessor directly with your comparables in hand. Many disputes settle informally at that stage.
Credits That Reduce Your Bill
Wisconsin credits are subtracted before the final bill is calculated. Most apply automatically. One requires you to file separately.
School Levy Tax Credit
The broadest credit, applied to every taxable property regardless of use. The state distributes $1.275 billion annually to municipalities based on their share of statewide school levies over the prior three years, then divides that among properties by assessed value.8Wisconsin State Legislature. State Property Tax Credits Higher-value properties receive a larger dollar reduction. You’ll see the school levy shown net of this credit on your bill.
First Dollar Credit
Applies to every taxable parcel with an improvement on it, such as a house, garage, or commercial building. For 2025–26, the credit is calculated by applying the school tax rate to the first $9,000 of improvements.9Wisconsin Department of Revenue. 2025-26 Lottery and First Dollar Credit – Maximum Credit Values The dollar amount varies by district because school mill rates differ. No application needed.
Lottery and Gaming Credit
Available only for your primary residence. The maximum credit value for 2025–26 is $27,000 of property value.9Wisconsin Department of Revenue. 2025-26 Lottery and First Dollar Credit – Maximum Credit Values To qualify, you must be a Wisconsin resident who owned the home and used it as your primary residence as of January 1 of the year the taxes are levied.10Wisconsin Department of Revenue. Wisconsin Lottery and Gaming Credit Program Rental property, vacant land, and second homes don’t qualify. The credit posts to your bill once you return the certification form that usually comes with it.
Homestead Credit
This one is income-based and claimed on your Wisconsin income tax return, not applied to the property tax bill directly. For tax year 2025, household income must be below $24,680, and the maximum credit is $1,168.11Wisconsin Department of Revenue. Homestead Credit Tax Year 2025 You must be a full-year Wisconsin resident, at least 18, and either have earned income during the year, be 62 or older, or have a disability. Renters can claim it too.
Veterans and Surviving Spouses Property Tax Credit
Wisconsin veterans with a 100% service-connected VA disability rating, or who qualify based on individual unemployability, can receive a credit covering 100% of property taxes on their primary residence, including land up to one acre.12Wisconsin Department of Veterans Affairs. Veterans and Surviving Spouses Property Tax Credit Unremarried surviving spouses of qualifying veterans are also eligible. It’s refundable and claimed on the state tax return.
Payment Deadlines
Tax bills must be mailed no later than the third Monday in December.13Wisconsin State Legislature. Wisconsin Statutes 74.09 – Property Tax Bill and Related Under Wis. Stat. § 74.11 you have two standard options: pay in full by January 31, or split the bill into two equal installments.14Wisconsin State Legislature. Wisconsin Code 74.11 – Dates for Payment of Taxes, Special Assessments and Special Charges With installments, the first half goes to your municipal treasurer by January 31 and the second half to the county treasurer by July 31. Some municipalities allow quarterly payments, but the rule stays the same: miss any installment and the entire unpaid balance goes delinquent.15Price County, WI. Property Tax Information
What Happens If You Fall Behind
A missed deadline starts a compounding problem. Delinquent taxes accrue 1% interest per month plus a 0.5% penalty per month — a combined 1.5% monthly charge running from February 1 — and a fraction of a month counts as a full month.
On September 1, the county treasurer issues a tax certificate for every parcel with taxes still unpaid as of August 31. That certificate opens a two-year redemption window.16Wisconsin State Legislature. Wisconsin Code 74.57 – Tax Certificates During those two years you can redeem by paying all delinquent taxes plus interest and penalties. The county must mail notice of the certificate; if it doesn’t, the clock hasn’t started.
Once two years pass without redemption, the county can take a tax deed or foreclose under Chapter 75. Many counties use in rem foreclosure under Wis. Stat. § 75.521, which provides at least eight additional weeks of redemption time after the action is first published.17Oconto County, WI. In-Rem Foreclosure of Tax Liens If the property still isn’t redeemed after a court hearing, the county takes full ownership and prior liens, mortgages, and ownership interests are wiped out. From missed payment to lost property takes roughly three years, but the interest and penalties compound quickly enough that resolving delinquency early is far cheaper than waiting.