---
type: "Bill"
title: "PROP TX-PTELL"
description: "Amends the Property Tax Extension Limitation Law in the Property Tax Code. Provides that a taxing district's aggregate extension base shall be adjusted whenever an assessment increase or decrease due to the issuance of a certificate of error, a decision of the board of review, or a decision of the Property Tax Appeal Board results in the overextension or underextension of taxes for the last preceding levy year. Effective immediately."
jurisdiction: "us/states/il"
legislature: "Illinois General Assembly"
session: "102nd"
identifier: "SB 508"
citation: "Illinois SB 508 (102nd)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Michael E. Hastings", "Michael J. Zalewski"]
version_count: 9
action_count: 71
vote_count: 2
first_action: "2021-02-23"
last_action: "2021-08-20"
source: "openstates"
source_identifier: "ocd-bill/4b3d3b24-76cd-4fdb-ae2f-d1ed0f6b8a3a"
source_url: "https://ilga.gov/legislation/BillStatus.asp?DocNum=508&GAID=16&DocTypeID=SB&LegId=133088&SessionID=110&GA=102"
source_hash: "8f95b988e1161926b7c549a999f1476b8237294c1a0c52d2c90b381334a4494a"
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-il"]
---

# Illinois SB 508 (102nd) — PROP TX-PTELL

Amends the Property Tax Extension Limitation Law in the Property Tax Code. Provides that a taxing district's aggregate extension base shall be adjusted whenever an assessment increase or decrease due to the issuance of a certificate of error, a decision of the board of review, or a decision of the Property Tax Appeal Board results in the overextension or underextension of taxes for the last preceding levy year. Effective immediately.

## Version chain

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

1. **Introduced** (filed) — [source](https://ilga.gov/legislation/102/SB/PDF/10200SB0508.pdf)
2. **Engrossed** (committee substitute) — [source](https://ilga.gov/legislation/102/SB/PDF/10200SB0508eng.pdf)
3. **House Amendment 001** (committee substitute) — [source](https://ilga.gov/legislation/102/SB/PDF/10200SB0508ham001.pdf)
4. **House Amendment 002** (committee substitute) — [source](https://ilga.gov/legislation/102/SB/PDF/10200SB0508ham002.pdf)
5. **House Amendment 003** (committee substitute) — [source](https://ilga.gov/legislation/102/SB/PDF/10200SB0508ham003.pdf)
6. **House Amendment 004** (committee substitute) — [source](https://ilga.gov/legislation/102/SB/PDF/10200SB0508ham004.pdf)
7. **House Amendment 005** (committee substitute) — [source](https://ilga.gov/legislation/102/SB/PDF/10200SB0508ham005.pdf)
8. **Senate Amendment 001** (committee substitute) — [source](https://ilga.gov/legislation/102/SB/PDF/10200SB0508sam001.pdf)
9. **Enrolled** (enrolled) — [source](https://ilga.gov/legislation/102/SB/PDF/10200SB0508enr.pdf)

## Votes

- Concurrence, Amendment 5 — **59–0** (pass) · upper
- Concurrence, Amendment 2 — **59–0** (pass) · upper

## Sponsors

- Michael E. Hastings — primary (person)
- Michael J. Zalewski — primary (person)
- Angelica Guerrero-Cuellar — cosponsor (person)

## Timeline

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

- **2021-02-23** Filed with Secretary by Sen. Donald P. DeWitte `filing`
- **2021-02-23** First Reading `reading-1`
- **2021-02-23** Referred to Assignments `referral-committee`
- **2021-04-07** Assigned to Revenue `referral-committee`
- **2021-04-14** Added as Chief Co-Sponsor Sen. Dale Fowler
- **2021-04-15** Do Pass Revenue; 008-000-000 `committee-passage`
- **2021-04-15** Placed on Calendar Order of 2nd Reading April 20, 2021
- **2021-04-15** Added as Co-Sponsor Sen. Sally J. Turner
- **2021-04-16** Senate Floor Amendment No. 1 Filed with Secretary by Sen. Donald P. DeWitte `amendment-introduction`
- **2021-04-16** Senate Floor Amendment No. 1 Referred to Assignments `referral-committee`
- **2021-04-20** Senate Floor Amendment No. 1 Assignments Refers to Revenue
- **2021-04-20** Second Reading `reading-2`
- **2021-04-20** Placed on Calendar Order of 3rd Reading April 21, 2021
- **2021-04-21** Senate Floor Amendment No. 1 Recommend Do Adopt Revenue; 010-000-000
- **2021-04-22** Recalled to Second Reading `reading-2`
- **2021-04-22** Senate Floor Amendment No. 1 Adopted; DeWitte `amendment-passage`
- **2021-04-22** Third Reading - Passed; 057-000-000 `passage, reading-3`
- **2021-04-22** Arrived in House `introduction`
- **2021-04-22** Chief House Sponsor Rep. Jonathan Carroll
- **2021-04-23** First Reading `reading-1`
- **2021-04-23** Referred to Rules Committee `referral-committee`
- **2021-05-04** Assigned to Revenue & Finance Committee `referral-committee`
- **2021-05-13** House Committee Amendment No. 1 Filed with Clerk by Rep. Jonathan Carroll `amendment-introduction`
- **2021-05-13** House Committee Amendment No. 1 Referred to Rules Committee `referral-committee`
- **2021-05-15** Rule 19(a) / Re-referred to Rules Committee `referral-committee`
- **2021-05-20** Alternate Chief Sponsor Changed to Rep. Michael J. Zalewski
- **2021-05-25** Assigned to Revenue & Finance Committee `referral-committee`
- **2021-05-26** Moved to Suspend Rule 21 Rep. Greg Harris
- **2021-05-26** Suspend Rule 21 - Prevailed 071-043-000
- **2021-05-26** Chief Sponsor Changed to Sen. Michael E. Hastings
- **2021-05-26** Do Pass / Short Debate Revenue & Finance Committee; 011-007-000 `committee-passage`
- **2021-05-26** Placed on Calendar 2nd Reading - Short Debate
- **2021-05-26** House Committee Amendment No. 1 Tabled Pursuant to Rule 40 `amendment-failure`
- **2021-05-26** Second Reading - Short Debate `reading-2`
- **2021-05-26** Held on Calendar Order of Second Reading - Short Debate `reading-2`
- **2021-05-27** Sponsor Removed Sen. Dale Fowler
- **2021-05-27** Sponsor Removed Sen. Sally J. Turner
- **2021-05-28** House Floor Amendment No. 2 Filed with Clerk by Rep. Michael J. Zalewski `amendment-introduction`
- **2021-05-28** House Floor Amendment No. 2 Referred to Rules Committee `referral-committee`
- **2021-05-28** Final Action Deadline Extended-9(b) May 31, 2021
- **2021-05-29** House Floor Amendment No. 2 Recommends Be Adopted Rules Committee; 004-000-000 `committee-passage-favorable`
- **2021-05-30** House Floor Amendment No. 3 Filed with Clerk by Rep. Michael J. Zalewski `amendment-introduction`
- **2021-05-30** House Floor Amendment No. 3 Referred to Rules Committee `referral-committee`
- **2021-05-30** House Floor Amendment No. 4 Filed with Clerk by Rep. Michael J. Zalewski `amendment-introduction`
- **2021-05-30** House Floor Amendment No. 4 Referred to Rules Committee `referral-committee`
- **2021-05-31** House Floor Amendment No. 5 Filed with Clerk by Rep. Michael J. Zalewski `amendment-introduction`
- **2021-05-31** House Floor Amendment No. 5 Referred to Rules Committee `referral-committee`
- **2021-05-31** House Floor Amendment No. 5 Recommends Be Adopted Rules Committee; 004-000-000 `committee-passage-favorable`
- **2021-05-31** House Floor Amendment No. 2 Adopted `amendment-passage`
- **2021-05-31** House Floor Amendment No. 5 Adopted `amendment-passage`
- **2021-05-31** Placed on Calendar Order of 3rd Reading - Short Debate
- **2021-05-31** Third Reading - Short Debate - Passed 111-001-001 `passage, reading-3`
- **2021-05-31** House Floor Amendment No. 3 Tabled Pursuant to Rule 40 `amendment-failure`
- **2021-05-31** House Floor Amendment No. 4 Tabled Pursuant to Rule 40 `amendment-failure`
- **2021-05-31** Added Alternate Co-Sponsor Rep. Angelica Guerrero-Cuellar
- **2021-05-31** Secretary's Desk - Concurrence House Amendment(s) 2, 5
- **2021-05-31** Placed on Calendar Order of Concurrence House Amendment(s) 2, 5 - May 31, 2021
- **2021-05-31** House Floor Amendment No. 2 Motion to Concur Filed with Secretary Sen. Michael E. Hastings `filing`
- **2021-05-31** House Floor Amendment No. 2 Motion to Concur Referred to Assignments `referral-committee`
- **2021-05-31** House Floor Amendment No. 5 Motion to Concur Filed with Secretary Sen. Michael E. Hastings `filing`
- **2021-05-31** House Floor Amendment No. 5 Motion to Concur Referred to Assignments `referral-committee`
- **2021-05-31** House Floor Amendment No. 2 Motion to Concur Be Approved for Consideration Assignments
- **2021-05-31** House Floor Amendment No. 5 Motion to Concur Be Approved for Consideration Assignments
- **2021-05-31** House Floor Amendment No. 2 Senate Concurs 059-000-000
- **2021-05-31** House Floor Amendment No. 5 Senate Concurs 059-000-000
- **2021-05-31** Senate Concurs
- **2021-05-31** Passed Both Houses
- **2021-06-29** Sent to the Governor `executive-receipt`
- **2021-08-20** Governor Approved `executive-signature`
- **2021-08-20** Effective Date August 20, 2021
- **2021-08-20** Public Act . . . . . . . . . 102-0519 `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/4b3d3b24-76cd-4fdb-ae2f-d1ed0f6b8a3a`. Confidence: reported (aggregated from official Illinois legislature records).