SB 636 Wisconsin Senate · 2025-2026 Regular Session

Relating to: a sales and use tax exemption for nuclear fusion technology projects. (FE)

SB 636 creates a sales and use tax exemption for businesses developing nuclear fusion technology. It exempts specific equipment, materials, and software listed in the bill (such as fusion reactors, diagnostic tools, and specialized materials) when used exclusively in qualified fusion projects. Qualified projects include research on energy generation, medical isotopes, plasma physics, or fusion-enabling technologies. Businesses must obtain certification from the corporation to qualify for the exemption, covering both direct purchases and contractor-transferred items used in these projects. The exemption applies to sales and use of qualifying items at the project location.
Bill status failed 1 of 4 stages cleared
Introduction
Nov 2025
Committee Review
Floor Vote
Governor
Introduced Nov 14, 2025 Last action Mar 23, 2026
Floor votes

How they voted

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Full legislative history

Actions timeline

Total actions
19
Key actions
3
Committee
3
Amendments
3
Feb 13, 2026
Committee
Withdrawn from committee on Senate Organization and rereferred to joint committee on Finance pursuant to Senate Rule 46(2)(c)
upper
Feb 3, 2026
Upper · Passed
Report passage as amended recommended by Committee on Agriculture and Revenue, Ayes 8, Noes 0
upper
Feb 3, 2026
Upper · Passed
Report adoption of Senate Substitute Amendment 1 recommended by Committee on Agriculture and Revenue, Ayes 8, Noes 0
upper
Jan 29, 2026
Introduced
Senate Substitute Amendment 1 offered by Senator Feyen
upper
Jan 12, 2026
Introduced
Senate Amendment 1 offered by Senator Feyen
upper
Jan 6, 2026
Upper · Passed
Report of Joint Survey Committee on Tax Exemptions requested
upper
Nov 14, 2025
Introduced
Introduced by Senator Feyen; cosponsored by Representatives Franklin, Steffen, Behnke, Callahan, Gustafson, Kreibich, Melotik, Murphy, Mursau, Neylon and Udell
upper
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Dan Feyen
Dan Feyen
RRepublican
WI
20