2025 Senate Bill 584

Individual income tax: withholding requirements; mandatory withholding requirement by pension administrators; make optional.

A bill to amend 1967 PA 281, entitled “Income tax act of 1967,” by amending section 703 (MCL 206.703), as amended by 2016 PA 158.

AI Analysis – Experimental

Senate Bill No. 584 amends Michigan's Income Tax Act to streamline and clarify income tax withholding requirements, notably removing outdated provisions for flow-through entities and maintaining key rules for other payers, with changes effective January 1, 2026.

Introduced in the Senate

Sept. 25, 2025

Introduced by Sens. Jeff Irwin (D-15) and Mary Cavanagh (D-6)

Referred to the Committee on Finance, Insurance, and Consumer Protection

Jan. 28, 2026

Reported without amendment

Jan. 29, 2026

Referred to the Committee of the Whole

Feb. 4, 2026

Reported without amendment

Feb. 19, 2026

Passed in the Senate 33 to 1 (details)

Received in the House

Feb. 19, 2026

Referred to the Committee on Finance