---
type: "Bill"
title: "Individual income tax; deductions; extension or renewal of certain qualified renaissance zones; allow. Amends sec. 31a of 1967 PA 281 (MCL 206.31a)."
description: "Individual income tax; deductions; extension or renewal of certain qualified renaissance zones; allow. Amends sec. 31a of 1967 PA 281 (MCL 206.31a)."
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2017-2018"
identifier: "SB 623"
citation: "Michigan SB 623 (2017-2018)"
classification: ["bill"]
subjects: ["Individual income tax: deductions", "Economic development: renaissance zones"]
status: "enacted"
primary_sponsors: []
version_count: 4
action_count: 25
vote_count: 2
first_action: "2017-10-10T04:00:00+00:00"
last_action: "2018-04-10T04:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/a5d4ffd2-bf9d-4eaf-804f-b7f21d11be3e"
source_url: "http://legislature.mi.gov/doc.aspx?2017-SB-0623"
source_hash: "f2b0ccf718d1ee2cab5f0350f53071fde2c0a810d328a4028afd32856c52d2a2"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mi"]
---

# Michigan SB 623 (2017-2018) — Individual income tax; deductions; extension or renewal of certain qualified renaissance zones; allow. Amends sec. 31a of 1967 PA 281 (MCL 206.31a).

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **As Passed by the House** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billengrossed/Senate/htm/2017-SEBH-0623.htm)
2. **As Passed by the Senate** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billengrossed/Senate/htm/2017-SEBS-0623.htm)
3. **Public Act** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/publicact/htm/2018-PA-0103.htm)
4. **Senate Introduced Bill** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billintroduced/Senate/htm/2017-SIB-0623.htm)

## Votes

- PASSED ROLL CALL # 483 YEAS 36 NAYS 0 EXCUSED 2 NOT VOTING 0 — **36–0** (pass) · upper
- passed; given immediate effect Roll Call # 177 Yeas 91 Nays 17 — **91–17** (pass) · lower

## Sponsors

- 32 — cosponsor (person)
- Kenneth Horn — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2017-10-10T04:00:00+00:00** INTRODUCED BY SENATOR KENNETH HORN `introduction`
- **2017-10-10T04:00:00+00:00** REFERRED TO COMMITTEE ON FINANCE `referral-committee`
- **2017-11-30T05:00:00+00:00** REPORTED FAVORABLY WITHOUT AMENDMENT `committee-passage`
- **2017-11-30T05:00:00+00:00** COMMITTEE RECOMMENDED IMMEDIATE EFFECT
- **2017-11-30T05:00:00+00:00** REFERRED TO COMMITTEE OF THE WHOLE `referral-committee`
- **2017-12-05T05:00:00+00:00** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITHOUT AMENDMENT(S) `committee-passage`
- **2017-12-05T05:00:00+00:00** PLACED ON ORDER OF THIRD READING
- **2017-12-06T05:00:00+00:00** PASSED ROLL CALL # 483 YEAS 36 NAYS 0 EXCUSED 2 NOT VOTING 0 `passage`
- **2017-12-06T05:00:00+00:00** received on 12/06/2017 `introduction`
- **2017-12-06T05:00:00+00:00** read a first time `reading-1`
- **2017-12-06T05:00:00+00:00** referred to Committee on Tax Policy `referral-committee`
- **2018-02-28T05:00:00+00:00** reported with recommendation without amendment `committee-passage`
- **2018-02-28T05:00:00+00:00** referred to second reading
- **2018-03-15T04:00:00+00:00** read a second time `reading-2`
- **2018-03-15T04:00:00+00:00** placed on third reading
- **2018-03-21T04:00:00+00:00** read a third time `reading-3`
- **2018-03-21T04:00:00+00:00** passed; given immediate effect Roll Call # 177 Yeas 91 Nays 17 `passage`
- **2018-03-21T04:00:00+00:00** returned to Senate
- **2018-03-22T04:00:00+00:00** GIVEN IMMEDIATE EFFECT
- **2018-03-22T04:00:00+00:00** FULL TITLE AGREED TO
- **2018-03-22T04:00:00+00:00** ORDERED ENROLLED
- **2018-04-10T04:00:00+00:00** PRESENTED TO GOVERNOR 3/30/2018 @ 11:39 AM `executive-receipt`
- **2018-04-10T04:00:00+00:00** APPROVED BY GOVERNOR 4/5/2018 @ 8:50 AM `executive-signature`
- **2018-04-10T04:00:00+00:00** FILED WITH SECRETARY OF STATE 4/5/2018 @ 2:52 PM
- **2018-04-10T04:00:00+00:00** ASSIGNED PA 0103'18 WITH IMMEDIATE EFFECT

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/a5d4ffd2-bf9d-4eaf-804f-b7f21d11be3e`. Confidence: reported (aggregated from official Michigan legislature records).