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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 Official data

  1. Introduced
  2. In committee
  3. Passed one chamber
  4. Passed both chambers
  5. Enacted
  6. Did not advance

Last official action: ·Record last updated:

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.

Generated automatically from the official title, sponsor list, and status record only. It does not characterize the bill’s purpose or effects. How summaries are written

Sponsors

Sponsors by party (alphabetical): Republican 2

NameRolePartyChamberDistrict
Howard MarkleinPrimary sponsorRepublicanSenate17
Bob WittkeCo-sponsorRepublicanHouse63

“Support” is shown only as formal sponsorship recorded by the legislature. Roll-call votes are available on the official bill page.

Recent official actions

  1. Failed to pass pursuant to Senate Joint Resolution 1
  2. Report of Joint Survey Committee on Tax Exemptions received, Ayes 8, Noes 1
  3. Report of Joint Survey Committee on Tax Exemptions requested
  4. Available for scheduling
  5. Report passage recommended by Joint Committee on Finance, Ayes 15, Noes 0
  6. Executive action taken
  7. Withdrawn from committee on Senate Organization and rereferred to joint committee on Finance pursuant to Senate Rule 46(2)(c)
  8. Available for scheduling
  9. Report passage recommended by Committee on Agriculture and Revenue, Ayes 8, Noes 0
  10. Executive action taken
  11. Public hearing held
  12. Fiscal estimate received

Showing 12 most recent of 14 actions. Full history

Sources

  1. Open States / Plural (data from the official legislature website)
  2. Official legislature source