Land · Wisconsin tax sale guide

Wisconsin tax deed sales by county

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Wisconsin is the state that breaks the tax sale template. There is no lien auction: when taxes go delinquent they accrue interest and penalty at eighteen percent a year, the county treasurer issues the tax certificate to the county itself each September 1, and the owner redeems from the county, generally within two years. The public's first purchase point comes years later, when the county has taken title by tax deed or in rem foreclosure and sells the land as tax-deeded property, usually floored at its appraised value.

This page set covers the top 10 Wisconsin counties by population. Each county page carries who actually sells (in Milwaukee it is the City, through its Treasurer and its Department of City Development), the channel the county uses, the current sale status, and the former owner protections that shape every purchase, verified against county, court and statute sources. Timing is the first fact: Wisconsin has no statewide sale season. Kenosha County has a live in rem foreclosure with a redemption deadline of December 29, 2026; Racine sells by sealed bid rounds through the year; Waukesha and Dane sell from standing lists and bid pages; Brown and Marathon sell through Wisconsin Surplus when batches are ready; and two counties in this set, Outagamie and Winnebago, publish no sale channel at all in their official sources, which their pages say plainly.

Verify before you go: counties can move a date, change terms, cancel a sale, or pull parcels at any time. The official sale list is the final word.

The 10 counties

Each row links to that county's own page: selling office, venue or platform, deposit, payment terms, leftover channel, and sources. Where a county has not posted a dated sale, the row says so instead of projecting a pattern onto it.

How Wisconsin tax sales work

• Delinquent taxes accrue at eighteen percent a year, and nobody auctions anything. Under s. 74.47 unpaid Wisconsin taxes bear interest at one percent per month plus a penalty of one half of one percent per month. There is no lien sale at this stage, in any county, to anyone.
• On September 1 the treasurer issues the tax certificate to the county itself. Under s. 74.57 the county treasurer issues a tax certificate for the taxes and charges unpaid at the close of August 31, and the certificate holder is the county. The investor product that lien states sell simply does not exist in Wisconsin.
• The owner redeems from the county, generally within two years. Redemption means paying the delinquent taxes with the accrued interest and penalty to the county treasurer. While the certificate runs, the county holds a lien and nothing more; it cannot sell the land.
• Title moves by tax deed or by in rem foreclosure. When redemption expires unredeemed, the county may take a tax deed under ss. 75.01, 75.12 and 75.14, after the notice s. 75.12 requires, with the owner able to redeem until the deed is recorded; or it may foreclose in rem under s. 75.521, where the published notice fixes a last day for redemption at least eight weeks after first publication and the judgment vests title in the county. The City of Milwaukee and Milwaukee County may file after one year of delinquency; other counties generally after two years.
• Only then does the public get a purchase point. Tax-deeded lands are sold under ss. 75.35, 75.36 and 75.69 in the manner the county board sets: sealed bids, standing lists, online auctions and over-the-counter sales all appear in this set. Where s. 75.69 governs, no parcel may be sold for less than its appraised value, and conveyances are executed by the county clerk.
• The former owner keeps two statutory protections. The county board must provide by ordinance a right for the former owner of a single-family owner-occupied property to repurchase before the county sells (s. 75.35(3)), and on any sale the proceeds are distributed under s. 75.36, with the remainder going to a former owner who used the property as a homestead in the five years before acquisition (s. 75.36(4)).

One Wisconsin fact decides most purchases: the county must already own the parcel before you can buy it, and where s. 75.69 governs it cannot sell below appraised value. That pairing kills the two standard tax sale plays, the cheap lien and the below-market deed, and replaces them with a quieter one: parcels whose appraisals are stale, parcels on standing lists that other buyers have stopped reading, and parcels in later sale rounds where the county has learned its first floor was wrong.

Research the parcels before you bid

A sale list gives you the parcel, the date, and the opening terms. It does not give you the owner, the value, or the rest of the picture: liens, foreclosure status, and parcel history. PropertyRadar is the data platform for that layer. It carries owner records, assessed and market values, foreclosure and tax data, and property history for parcels across the country, searchable by address, owner, or county, including parcels that never reach a sale list.

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Get the alert, not just the calendar.

The dates on these pages are the free layer. The Pine membership is the paid layer, proven in New York: members pick their counties, get alerts when a sale is scheduled or a list posts, and receive the full property list with the analysis already done. Wisconsin counties open from the interest list first, in the order readers join it.

Keep going

Once a deadline puts you in a sale, the Land Investor Due Diligence Toolkit is the checklist and bid worksheet to run on each parcel before you bid.