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If enacted in Wisconsin, a “revenue-neutral” flat income tax of 5.22% would bring tax increases for the 96.6% of Wisconsin taxpayers with adjusted gross incomes between $20,000 and $300,000, according to a group of over two dozen economists. 

More specifically, 72.5% of all filers would experience an average tax increase of $249, according to estimates from the nonpartisan Legislative Fiscal Bureau. Currently, income tax rates in the state range from 3.54% for couples earning up to $17,010 a year to 7.65% for couples earning more than $374,600 annually. 

In a letter, the group of economists warned a flat tax “would increase taxes on the middle class and working poor while handing the very rich a handsome tax cut.”

Republican gubernatorial candidate Tim Michels said in October 2022 that he is open to a flat tax, but not if it would raise taxes for the lowest income Wisconsinites. 


University of Pittsburgh: Revenue neutral flat tax distribution memo

Urban Milwaukee: Letter from more than two dozen economists on Wisconsin flat tax proposal

Milwaukee Journal Sentinel: Economists say Tim Michels’ flat tax idea would only benefit the rich

Milwaukee Journal Sentinel: GOP governor candidate Tim Michels says he is open to a flat income tax for Wisconsin

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Jacob Alabab-Moser / Wisconsin WatchFact Checker

Jacob Alabab-Moser joined as Wisconsin Watch’s fact checker in September 2022, as part of the effort by The Gigafact Project in partnership with different state-level news outlets to combat misinformation in the 2022 midterm elections. Jacob has several years of experience as a fact checker and research assistant at a variety of organizations, including at The Gigafact Project. He holds a BA from Brown University and is pursuing a MSc from the London School of Economics and Political Science.