---
type: "Bill"
title: "Reduce Property Taxes And Voter-approved Revenue Change"
description: "The act requires the secretary of state to refer a ballot issue to voters at the November 2023 election. Most of the act only becomes effective if the voters approve the ballot issue."
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2023A"
identifier: "SB 23-303"
citation: "Colorado SB 23-303 (2023A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Chris Hansen", "Chris deGruy Kennedy", "Mike Weissman", "Steve Fenberg"]
version_count: 10
action_count: 14
vote_count: 15
first_action: "2023-05-01T06:00:00+00:00"
last_action: "2023-05-24T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/d916b36b-1886-40ce-9cc7-01926f68ae9f"
source_url: "https://leg.colorado.gov/bills/sb23-303"
source_hash: "6e98fa88fc110d053a11449af7fc84d20a1c5c2ce3579d9b6f4585c04e3b9059"
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-co"]
---

# Colorado SB 23-303 (2023A) — Reduce Property Taxes And Voter-approved Revenue Change

The act requires the secretary of state to refer a ballot issue to voters at the November 2023 election. Most of the act only becomes effective if the voters approve the ballot issue.

## Version chain

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

1. **Committee Amendment** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_sb303_h_app_004.pdf)
2. **Engrossed (05/03/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_303_eng.pdf)
3. **Final Act (05/15/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_303_enr.pdf)
4. **Introduced (05/01/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_303_01.pdf)
5. **PA1 (05/02/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_303_s_app_01.pdf)
6. **PA2 (05/07/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_303_h_app_01.pdf)
7. **Reengrossed (05/04/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_303_ren.pdf)
8. **Rerevised (05/08/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_303_rer.pdf)
9. **Revised (05/07/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_303_rev.pdf)
10. **Signed Act (05/24/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_303_signed.pdf)

## Votes

- PERM — **44–2** (pass) · lower
- PREV ? — **44–2** (pass) · lower
- COW * — **17–17** (fail) · upper
- REPASS — **23–12** (pass) · upper
- COW * — **11–23** (fail) · upper
- COW * — **11–23** (fail) · upper
- PREV ? — **38–8** (pass) · lower
- PERM — **28–36** (fail) · lower
- AMD — **44–2** (pass) · lower
- BILL — **21–14** (pass) · upper
- COW * — **14–20** (fail) · upper
- CONCUR — **23–12** (pass) · upper
- AMD — **45–20** (pass) · lower
- BILL — **39–7** (pass) · lower
- PERM — **45–17** (pass) · lower

## Sponsors

- Chris Hansen — primary (person)
- Chris deGruy Kennedy — primary (person)
- Mike Weissman — primary (person)
- Steve Fenberg — primary (person)

## Timeline

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

- **2023-05-24T06:00:00+00:00** Governor Signed `executive-signature`
- **2023-05-15T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2023-05-15T06:00:00+00:00** Signed by the Speaker of the House
- **2023-05-10T06:00:00+00:00** Signed by the President of the Senate
- **2023-05-08T06:00:00+00:00** Senate Considered House Amendments - Result was to Concur - Repass
- **2023-05-08T06:00:00+00:00** House Third Reading Passed with Amendments - Floor `passage, reading-3`
- **2023-05-07T06:00:00+00:00** House Second Reading Special Order - Passed with Amendments - Committee, Floor
- **2023-05-06T06:00:00+00:00** House Committee on Appropriations Refer Amended to House Committee of the Whole `committee-passage, referral-committee`
- **2023-05-04T06:00:00+00:00** Introduced In House - Assigned to Appropriations `introduction`
- **2023-05-04T06:00:00+00:00** Senate Third Reading Passed - No Amendments `passage, reading-3`
- **2023-05-03T06:00:00+00:00** Senate Second Reading Special Order - Passed with Amendments - Committee, Floor
- **2023-05-02T06:00:00+00:00** Senate Second Reading Special Order - Laid Over Daily - No Amendments
- **2023-05-02T06:00:00+00:00** Senate Committee on Appropriations Refer Amended to Senate Committee of the Whole `committee-passage, referral-committee`
- **2023-05-01T06:00:00+00:00** Introduced In Senate - Assigned to Appropriations `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/d916b36b-1886-40ce-9cc7-01926f68ae9f`. Confidence: reported (aggregated from official Colorado legislature records).