Tax Relief for Wisconsin Storm Victims

September 24, 2025

On September 17, the IRS announced relief for Wisconsin taxpayers impacted by storms that began on August 9, 2025. Affected counties include Milwaukee, Washington and Waukesha.

New Deadline: February 2, 2026

Individuals and businesses in these areas now have until Feb. 2, 2026, to file returns and pay taxes originally due during the disaster period.

This extension applies to:
• 2024 tax returns with valid extensions through Oct. 15, 2025
• Quarterly estimated payments due Sept. 15, 2025 & Jan. 15, 2026
• Payroll & excise tax returns due Oct. 31, 2025 & Jan. 31, 2026
• Calendar-year partnerships & S corps with Sept. 15, 2025 extensions
• Calendar-year corporations with Oct. 15, 2025 extensions
• Tax-exempt organizations with Nov. 17, 2025 extensions

Note: Filing extensions do not extend the time to pay any taxes due.

Wisconsin follows federal disaster relief guidelines—filing and estimated payment deadlines are automatically extended for affected taxpayers.