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IntroducedJan 16, 2026
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Passed AssemblyFeb 19, 2026
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Passed Senate
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Became Law
Wisconsin Assembly Bill
Relating to: adopting changes to the federal Internal Revenue Code for state tax purposes and modifying administrative rules related to such changes. (FE)
Last Action See all actions
Senate • Feb 25, 2026: Available for scheduling
Latest Bill Text See all bill texts
Summary
Comments on AB 870
Tweets
Whip Lists
Sponsors
Votes
YES: 58
- ARMSTRONG
- AUGUST
- BEHNKE
- BORN
- BRILL
- BROOKS
- CALLAHAN
- DALLMAN
- DITTRICH
- DONOVAN
- DOYLE
- DUCHOW
- EMERSON
- FRANKLIN
- GOEBEN
- GREEN
- GUNDRUM
- GUSTAFSON
- HURD
- JACOBSON, B
- JACOBSON, J
- KAUFERT
- KITCHENS
- KNODL
- KREIBICH
- KRUG
- KURTZ
- MAXEY
- MELOTIK
- MOSES
- MURPHY
- MURSAU
- NEDWESKI
- NEYLON
- NOVAK
- O'CONNOR
- ORTIZ-VELEZ
- PENTERMAN
- PETERSEN
- PIWOWARCZYK
- PRONSCHINSKE
- RODRIGUEZ
- SNYDER
- SORTWELL
- SPIROS
- STEFFEN
- SUMMERFIELD
- SWEARINGEN
- TITTL
- TRANEL
- TUCKER
- TUSLER
- VANDERMEER
- VINING
- WICHGERS
- WITTKE
- ZIMMERMAN
- SPEAKER
NO: 35
Actions
- Feb 25, 2026 | Senate
- Read first time and referred to committee on Senate Organization
- Available for scheduling
- Feb 24, 2026 | Senate
- LRB correction (Assembly Substitute Amendment 1)
- Feb 23, 2026 | Senate
- Received from Assembly
- Feb 19, 2026 | Assembly
- Read a second time
- Assembly Substitute Amendment 1 offered by Representative Wittke
- Assembly Substitute Amendment 1 adopted
- Ordered to a third reading
- Rules suspended
- Read a third time and passed, Ayes 58, Noes 35
- Ordered immediately messaged
- Feb 18, 2026 | Assembly
- Made a special order of business at 11:38 AM on 2-19-2026 pursuant to Assembly Resolution 14
- Feb 10, 2026 | Assembly
- Report of Joint Survey Committee on Tax Exemptions received
- Feb 09, 2026 | Assembly
- Executive action taken by joint survey committee on Tax Exemptions
- Feb 06, 2026 | Assembly
- Referred to joint survey committee on Tax Exemptions pursuant to Assembly Rule 45 (4)
- Feb 04, 2026 | Assembly
- Executive action taken
- Report Assembly Amendment 1 adoption recommended by Committee on Ways and Means, Ayes 7, Noes 3
- Report passage as amended recommended by Committee on Ways and Means, Ayes 7, Noes 3
- Referred to committee on Rules
- Jan 28, 2026 | Assembly
- Fiscal estimate received
- Jan 21, 2026 | Assembly
- Public hearing held
- Jan 19, 2026 | Assembly
- Assembly Amendment 1 offered by Representative Wittke
- Jan 16, 2026 | Assembly
- Introduced by Representative Wittke; cosponsored by Senator Marklein
- Read first time and referred to Committee on Ways and Means
Documents
- Amendment Histories
- LC Amendment Memo
- AB870: Report of the Joint Survey Committee on Tax Exemptions
- AB870: Fiscal Estimate From DOR
- AB870 ROCP for Committee on Ways and Means On 2/4/2026
- AB870 ROCP for Committee on Ways and Means On 2/4/2026
- LC Hearing Materials for AB870 on 1/21/2026
- Wisconsin Ethics Commission information
- 2025 Senate Bill 859

