No county, city, village, town, or other unit of government authorized to levy taxes may assess, levy or collect any tax on income, or measured by income, and any tax so assessed or levied is void.
Wis. Stat. § 66.0611
No county, city, village, town, or other unit of government authorized to levy taxes may assess, levy or collect any tax on income, or measured by income, and any tax so assessed or levied is void.
Wis. Stat. § 66.0611