Wisconsin · 2025-2026 Regular Session · Bill

SB 859: Relating to: adopting changes to the federal Internal Revenue Code for state tax purposes and modifying administrative rules related to such changes. (FE)

Did not advance Last action March 23, 2026: Failed to pass pursuant to Senate Joint Resolution 1

Plain-language summary

SB 859 is a bill introduced in the Wisconsin Senate on January 16, 2026. According to its official title, it concerns: Relating to: adopting changes to the federal Internal Revenue Code for state tax purposes and modifying administrative rules related to such changes. (FE). Primary sponsor: Howard Marklein (Republican). It lists 1 additional sponsor. Most recent recorded action (March 23, 2026): Failed to pass pursuant to Senate Joint Resolution 1.

Sponsors

Primary sponsor: Howard Marklein (Republican). 1 co-sponsor.