Illinois · Bill 4 · 104th General Assembly

CONAMEND-INCOME TAX RATES

SJRCA 4 Sponsored by Robert F. Martwick In committee

  1. Introduced Feb 5, 2025
  2. In committee Feb 6, 2025
  3. Passed the Senate Next
  4. Passed the House  
  5. To the governor  
  6. Became law  

What it does

The legislature's own summary of the bill, or its official long title.

Proposes to amend the Revenue Article of the Illinois Constitution. Removes a provision that provides that a tax on income shall be measured at a non-graduated rate. Provides that the General Assembly shall provide by law for the rate or rates of any tax on or measured by income imposed by the State (currently, there may be no more than one such tax imposed by the State on individuals and one such tax so imposed on…

Read the full title (110 words)

Proposes to amend the Revenue Article of the Illinois Constitution. Removes a provision that provides that a tax on income shall be measured at a non-graduated rate. Provides that the General Assembly shall provide by law for the rate or rates of any tax on or measured by income imposed by the State (currently, there may be no more than one such tax imposed by the State on individuals and one such tax so imposed on corporations). Provides that the highest rate of tax imposed on corporations may not exceed the highest rate imposed on individuals by more than a ratio of 8 to 5. Effective upon being declared adopted.

Every action

21 steps, oldest first, as the legislature records them.

Show the 13 earlier steps
  1. SenateFiled with Secretary
  2. CommitteeReferred to Assignments · Senate Assignments
  3. SenateAdded as Chief Co-Sponsor Sen. Graciela Guzmán
  4. SenateAdded as Co-Sponsor Sen. Mary Edly-Allen
  5. SenateAdded as Chief Co-Sponsor Sen. Karina Villa
  6. SenateAdded as Co-Sponsor Sen. Rachel Ventura
  7. SenateAdded as Chief Co-Sponsor Sen. Ram Villivalam
  8. SenateAdded as Co-Sponsor Sen. Lakesia Collins
  9. SenateAdded as Co-Sponsor Sen. Adriane Johnson
  10. SenateAdded as Co-Sponsor Sen. Paul Faraci
  11. SenateAdded as Co-Sponsor Sen. David Koehler
  12. SenateAdded as Chief Co-Sponsor Sen. Robert Peters
  13. SenateAdded as Co-Sponsor Sen. Mark L. Walker
  1. SenateAdded as Co-Sponsor Sen. Celina Villanueva
  2. SenateAdded as Co-Sponsor Sen. Javier L. Cervantes
  3. SenateAdded as Co-Sponsor Sen. Mike Simmons
  4. SenateAdded as Co-Sponsor Sen. Christopher Belt
  5. SenateAdded as Co-Sponsor Sen. Mike Porfirio
  6. SenateAdded as Co-Sponsor Sen. Elgie R. Sims, Jr.
  7. SenateAdded as Co-Sponsor Sen. Sara Feigenholtz
  8. SenateSponsor Removed Sen. Christopher Belt

Roll calls

No recorded votes on this bill yet.

Sponsors

The member who introduced it, joined by 17 cosponsors: 17 Democrats.

All 17 cosponsors

From Illinois's official records (www.ilga.gov), checked Nov 2, 2026. Text links go to the official versions; LegiList does not copy bill text.