Michigan 2025-2026 Regular Session Status: Passed House 1 R cosponsors

HB 4170 — Individual income tax: rate; rollback of rate to 4.05% and effect of a triggering rate reduction; provide for, and clarify permanency. Amends sec. 51 of 1967 PA 281 (MCL 206.51).

Last action — REFERRED TO COMMITTEE ON FINANCE, INSURANCE, AND CONSUMER PROTECTION

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  1. ✓
    Introduced
  2. ✓
    In Committee
  3. 3
    Passed House
  4. 4
    Passed Senate
  5. 5
    To Executive
  6. 6
    Enacted

This bill has passed the House. Introduced March 20, 2025. It now moves to the second chamber.

Next likely step: consideration and a floor vote in the Senate.

Prognosis

Advancing 48% · moderate confidence

Where this bill stands today.

Odds of enactment

Moderate

How often bills like it became law.

  • Passed House

    Current position in the legislative process.

  • 1 sponsor

    1 primary, 0 co-sponsors signed on.

  • Single-party support

    Sponsorship is currently within one party (1 R).

  • Cleared a recorded vote

    Passed 2 recorded votes so far.

Prognosis reads this bill's own signals — stage, sponsorship breadth, committee status, recorded votes and cross-state momentum. Odds come from a model trained on which bills have become law.

Summary

Individual income tax: rate; rollback of rate to 4.05% and effect of a triggering rate reduction; provide for, and clarify permanency. Amends sec. 51 of 1967 PA 281 (MCL 206.51).

Bill Text

What changed in the latest version

8 added · 7 removed

Plain-language change summary

In the latest version of HB 4170, several lines have been added to enhance the bill's provisions while some outdated lines have been removed. This change aims to streamline the legislation, making it clearer and more effective in addressing its goals. These adjustments are important because they help ensure that the bill can meet current needs and priorities without unnecessary complications. Ultimately, these updates can lead to more efficient implementation of the law.

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HOUSE BILL NO.
HB-4170, As Passed House, March 18, 2025 HOUSE BILL NO.
KAS H00036'25_HB4170_INTR_1 heg1t2 1 (a) On and after October 1, 2007 and before October 1, 2012, 4.35%.
KAS H00036'25_HB4170_APH_1 m4u6as 1 (a) On and after October 1, 2007 and before October 1, 2012, 4.35%.
The state treasurer, the director of the senate fiscal agency, and the director of the KAS H00036'25_HB4170_INTR_1 heg1t2 1 house fiscal agency shall make the determination under this subdivision no later than the date of the January 2023 revenue estimating conference conducted pursuant to sections 367a through 367f of the management and budget act, 1984 PA 431, MCL 18.1367a to 18.1367f, and the date of each January revenue estimating conference conducted each year thereafter.
The state treasurer, the director of the senate fiscal agency, and the director of the KAS H00036'25_HB4170_APH_1 m4u6as 1 house fiscal agency shall make the determination under this subdivision no later than the date of the January 2023 revenue estimating conference conducted pursuant to sections 367a through 367f of the management and budget act, 1984 PA 431, MCL 18.1367a to 18.1367f, and the date of each January revenue estimating conference conducted each year thereafter.
(2) Except as otherwise provided for December 1, 2018 through KAS H00036'25_HB4170_INTR_1 heg1t2 1 September 30, 2019, beginning January 1, 2000 through September 30, 2023, that percentage of the gross collections before refunds from the tax levied under this section that is equal to 1.012% divided by the income tax rate levied under this section shall be deposited in the state school aid fund created in section 11 of article IX of the state constitution of 1963.
(2) Except as otherwise provided for December 1, 2018 through KAS H00036'25_HB4170_APH_1 m4u6as 1 September 30, 2019, beginning January 1, 2000 through September 30, 2023, that percentage of the gross collections before refunds from the tax levied under this section that is equal to 1.012% divided by the income tax rate levied under this section shall be deposited in the state school aid fund created in section 11 of article IX of the state constitution of 1963.
Beginning October 1, 2026, that percentage of the gross collections before refunds from the tax levied under this section that is equal KAS H00036'25_HB4170_INTR_1 heg1t2 1 to 1.040% divided by the income tax rate levied under this section shall must be deposited in the state school aid fund created in section 11 of article IX of the state constitution of 1963.
Beginning October 1, 2026, that percentage of the gross collections before refunds from the tax levied under this section that is equal KAS H00036'25_HB4170_APH_1 m4u6as 1 to 1.040% divided by the income tax rate levied under this section shall must be deposited in the state school aid fund created in section 11 of article IX of the state constitution of 1963.
The applicable annualized rate shall be imposed upon the taxable income of every person other than a KAS H00036'25_HB4170_INTR_1 heg1t2 1 corporation for those tax years.
The applicable annualized rate shall be imposed upon the taxable income of every person other than a KAS H00036'25_HB4170_APH_1 m4u6as 1 corporation for those tax years.
KAS H00036'25_HB4170_INTR_1 heg1t2 1 (a) "Consumer Price Index" means the United States Consumer Price Index for all urban consumers as defined and reported by the United States Department of Labor, Bureau of Labor Statistics.
KAS H00036'25_HB4170_APH_1 m4u6as 1 (a) "Consumer Price Index" means the United States Consumer Price Index for all urban consumers as defined and reported by the United States Department of Labor, Bureau of Labor Statistics.
Final Page KAS H00036'25_HB4170_INTR_1 heg1t2
Final Page KAS H00036'25_HB4170_APH_1 m4u6as
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Action History

  1. REFERRED TO COMMITTEE ON FINANCE, INSURANCE, AND CONSUMER PROTECTION

Sponsors

Sponsorship breakdown

Export CSV (upgrade) →

1 sponsors · 0 co-sponsors · 146 not signed on · 41 voted No

Sponsors (1)

Co-sponsors (0)

None.

Not signed on (146)

146 members have not signed on to this bill.

Show all 146 →

"Not signed on" means a member has not sponsored or co-sponsored this bill — it does not imply opposition. Members flagged Voted No have a recorded No vote on this bill.

Whip count is in markup. Polling the chamber and every recorded vote this session. Only the first open is slow. It’s instant for you after this. Calling the roll · Tallying · Engrossing

Votes

passed; given immediate effect

Passed 65 Yea · 43 Nay · 2 Other
Party YeaNayPresentNot Voting
Democrat 84100
Republican 57000
Unaffiliated 0200
Total 654300
% of votes cast 60%40%0%0%
How each member voted (108)
Member Party Vote
Myers-Phillips — Nay
O’Neal — Nay
Alabas Farhat Democrat Nay
Angela Witwer Democrat Yea
Betsy Coffia Democrat Nay
Brenda Carter Democrat Nay
Carol Glanville Democrat Nay
Carrie Rheingans Democrat Nay
Chedrick Greene Democrat Yea
Cynthia Neeley Democrat Nay
Denise Mentzer Democrat Yea
Donavan McKinney Democrat Nay
Dylan Wegela Democrat Nay
Emily Dievendorf Democrat Nay
Erin Byrnes Democrat Nay
Helena Scott Democrat Nay
Jason M Hoskins Democrat Nay
Jason Morgan Democrat Nay
Jasper Martus Democrat Nay
Jennifer Conlin Democrat Nay
Jimmie Wilson Jr Democrat Nay
Joey Andrews Democrat Nay
John Fitzgerald Democrat Yea
Joseph Tate Democrat Nay
Julie Brixie Democrat Nay
Julie M. Rogers Democrat Nay
Kelly A Breen Democrat Yea
Kimberly Edwards Democrat Nay
Kristian Grant Democrat Nay
Laurie Pohutsky Democrat Nay
Mai Xiong Democrat Yea
Matt Koleszar Democrat Yea
Matt Longjohn Democrat Nay
Mike McFall Democrat Nay
Morgan Foreman Democrat Nay
Natalie Price Democrat Nay
Noah Arbit Democrat Nay
Penelope Tsernoglou Democrat Nay
Peter Herzberg Democrat Nay
Phil Skaggs Democrat Nay
Ranjeev Puri Democrat Nay
Reggie Miller Democrat Yea
Regina Weiss Democrat Nay
Samantha Steckloff Democrat Nay
Sharon MacDonell Democrat Nay
Stephanie A Young Democrat Nay
Stephen Wooden Democrat Nay
Tullio Liberati Jr. Democrat Nay
Tyrone Carter Democrat Nay
Veronica Paiz Democrat Nay
Will Snyder Democrat Nay
Alicia St. Germaine Republican Yea
Angela Rigas Republican Yea
Ann M. Bollin Republican Yea
Bill Schuette Republican Yea
Brad Paquette Republican Yea
Bradley Slagh Republican Yea
Brian BeGole Republican Yea
Bryan Posthumus Republican Yea
Cameron Cavitt Republican Yea
Curtis S VanderWall Republican Yea
David Prestin Republican Yea
David W. Martin Republican Yea
Donni Steele Republican Yea
Douglas C Wozniak Republican Yea
Gina Johnsen Republican Yea
Greg VanWoerkom Republican Yea
Gregory Alexander Republican Yea
Gregory Markkanen Republican Yea
James DeSana Republican Yea
Jamie Thompson Republican Yea
Jason Woolford Republican Yea
Jay DeBoyer Republican Yea
Jennifer Wortz Republican Yea
Jerry Neyer Republican Yea
John R. Roth Republican Yea
Joseph A. Aragona Republican Yea
Joseph Fox Republican Yea
Joseph Pavlov Republican Yea
Josh Schriver Republican Yea
Karl Bohnak Republican Yea
Kathy Schmaltz Republican Yea
Ken Borton Republican Yea
Luke Meerman Republican Yea
Mark A Tisdel Republican Yea
Matt Hall Republican Yea
Matt Maddock Republican Yea
Matthew Bierlein Republican Yea
Mike Harris Republican Yea
Mike Hoadley Republican Yea
Mike Mueller Republican Yea
Nancy DeBoer Republican Yea
Nancy Jenkins-Arno Republican Yea
Parker Fairbairn Republican Yea
Pauline Wendzel Republican Yea
Phil Green Republican Yea
Rachelle Smit Republican Yea
Rick Outman Republican Yea
Ron Robinson Republican Yea
Rylee Linting Republican Yea
Sarah Lightner Republican Yea
Steve Carra Republican Yea
Steve Frisbie Republican Yea
Thomas Kuhn Republican Yea
Tim Kelly Republican Yea
Timothy Beson Republican Yea
Tom Kunse Republican Yea
William Bruck Republican Yea

Official roll call →

passed; given immediate effect Roll Call #32 Yeas 65 Nays 43 Excused 0 Not Voting 2

Passed 65 Yea · 43 Nay
Party YeaNayPresentNot Voting
Republican 57000
Democrat 74100
Unaffiliated 1200
Total 654300
% of votes cast 60%40%0%0%
How each member voted (108)
Member Party Vote
Myers-Phillips — Nay
O’Neal — Nay
St. Germaine — Yea
Alabas Farhat Democrat Nay
Angela Witwer Democrat Yea
Betsy Coffia Democrat Nay
Brenda Carter Democrat Nay
Carol Glanville Democrat Nay
Carrie Rheingans Democrat Nay
Cynthia Neeley Democrat Nay
Denise Mentzer Democrat Yea
Donavan McKinney Democrat Nay
Dylan Wegela Democrat Nay
Emily Dievendorf Democrat Nay
Erin Byrnes Democrat Nay
Helena Scott Democrat Nay
Jason M Hoskins Democrat Nay
Jason Morgan Democrat Nay
Jasper Martus Democrat Nay
Jennifer Conlin Democrat Nay
Jimmie Wilson Jr Democrat Nay
Joey Andrews Democrat Nay
John Fitzgerald Democrat Yea
Joseph Tate Democrat Nay
Julie Brixie Democrat Nay
Julie M. Rogers Democrat Nay
Kelly A Breen Democrat Yea
Kimberly Edwards Democrat Nay
Kristian Grant Democrat Nay
Laurie Pohutsky Democrat Nay
Mai Xiong Democrat Yea
Matt Koleszar Democrat Yea
Matt Longjohn Democrat Nay
Mike McFall Democrat Nay
Morgan Foreman Democrat Nay
Natalie Price Democrat Nay
Noah Arbit Democrat Nay
Penelope Tsernoglou Democrat Nay
Peter Herzberg Democrat Nay
Phil Skaggs Democrat Nay
Ranjeev Puri Democrat Nay
Reggie Miller Democrat Yea
Regina Weiss Democrat Nay
Samantha Steckloff Democrat Nay
Sharon MacDonell Democrat Nay
Stephanie A Young Democrat Nay
Stephen Wooden Democrat Nay
Tullio Liberati Jr. Democrat Nay
Tyrone Carter Democrat Nay
Veronica Paiz Democrat Nay
Will Snyder Democrat Nay
Angela Rigas Republican Yea
Ann M. Bollin Republican Yea
Bill Schuette Republican Yea
Brad Paquette Republican Yea
Bradley Slagh Republican Yea
Brian BeGole Republican Yea
Bryan Posthumus Republican Yea
Cameron Cavitt Republican Yea
Curtis S VanderWall Republican Yea
David Prestin Republican Yea
David W. Martin Republican Yea
Donni Steele Republican Yea
Douglas C Wozniak Republican Yea
Gina Johnsen Republican Yea
Greg VanWoerkom Republican Yea
Gregory Alexander Republican Yea
Gregory Markkanen Republican Yea
Jaime Greene Republican Yea
James DeSana Republican Yea
Jamie Thompson Republican Yea
Jason Woolford Republican Yea
Jay DeBoyer Republican Yea
Jennifer Wortz Republican Yea
Jerry Neyer Republican Yea
John R. Roth Republican Yea
Joseph A. Aragona Republican Yea
Joseph Fox Republican Yea
Joseph Pavlov Republican Yea
Josh Schriver Republican Yea
Karl Bohnak Republican Yea
Kathy Schmaltz Republican Yea
Ken Borton Republican Yea
Luke Meerman Republican Yea
Mark A Tisdel Republican Yea
Matt Hall Republican Yea
Matt Maddock Republican Yea
Matthew Bierlein Republican Yea
Mike Harris Republican Yea
Mike Hoadley Republican Yea
Mike Mueller Republican Yea
Nancy DeBoer Republican Yea
Nancy Jenkins-Arno Republican Yea
Parker Fairbairn Republican Yea
Pauline Wendzel Republican Yea
Phil Green Republican Yea
Rachelle Smit Republican Yea
Rick Outman Republican Yea
Ron Robinson Republican Yea
Rylee Linting Republican Yea
Sarah Lightner Republican Yea
Steve Carra Republican Yea
Steve Frisbie Republican Yea
Thomas Kuhn Republican Yea
Tim Kelly Republican Yea
Timothy Beson Republican Yea
Tom Kunse Republican Yea
William Bruck Republican Yea

Official roll call →

Subjects

taxation
Cross-referencing the record. Reading this bill against every other bill in the corpus by meaning, not keywords. Only the first open is slow. It’s instant for you after this. Matching · Ranking · Engrossing

Frequently asked questions

What does HB 4170 do?
Individual income tax: rate; rollback of rate to 4.05% and effect of a triggering rate reduction; provide for, and clarify permanency. Amends sec. 51 of 1967 PA 281 (MCL 206.51).
Who sponsors HB 4170?
HB 4170 is sponsored by Kathy Schmaltz (Republican).
What is the current status of HB 4170?
This bill has passed the House. Introduced March 20, 2025. It now moves to the second chamber.
Where can I track HB 4170?
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