republic-os/legislation/us/states/co/2025a/sb-25-180.md

type, title, description, jurisdiction, legislature, session, identifier, citation, classification, subjects, status, primary_sponsors, version_count, action_count, vote_count, first_action, last_action, source, source_identifier, source_url, source_hash, vintage, source_snapshot, retrieved_at, confidence, tags

type	title	description	jurisdiction	legislature	session	identifier	citation	classification	subjects	status	primary_sponsors	version_count	action_count	vote_count	first_action	last_action	source	source_identifier	source_url	source_hash	vintage	source_snapshot	retrieved_at	confidence	tags
Bill	Population Growth Calculation	Section 20 of article X of the state constitution (TABOR) requires the maximum annual percentage change in state fiscal year spending to equal inflation plus the percentage change in state population in the prior calendar year adjusted for revenue changes approved by voters. Although TABOR does not specify how the state shall determine the percentage change in state population (population growth), the TABOR implementing statutes do. For years in which there is not a decennial census, the TABOR implementing statutes required the state to calculate population growth by determining the percentage change between:	us/states/co	Colorado General Assembly	2025A	SB 25-180	Colorado SB 25-180 (2025A)	bill		enacted	Barbara Kirkmeyer Emily Sirota Judy Amabile Rick Taggart	8	13	2	2025-02-24T07:00:00+00:00	2025-03-31T06:00:00+00:00	openstates	ocd-bill/ad1a3e8b-eb91-4db8-9d66-c06882c4652e	https://leg.colorado.gov/bills/sb25-180	c775f0813dca896415e1cd318a47dfd08965a1e63323051d6d030c91fbf10ee4	2026-07-01	https://data.openstates.org/daily/2026-07-01/public.pgdump	2026-07-06	reported	legislation bill us-co

Colorado SB 25-180 (2025A) — Population Growth Calculation

Section 20 of article X of the state constitution (TABOR) requires the maximum annual percentage change in state fiscal year spending to equal inflation plus the percentage change in state population in the prior calendar year adjusted for revenue changes approved by voters. Although TABOR does not specify how the state shall determine the percentage change in state population (population growth), the TABOR implementing statutes do. For years in which there is not a decennial census, the TABOR implementing statutes required the state to calculate population growth by determining the percentage change between:

Version chain

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

1. Committee Amendment (committee substitute) — source
2. Engrossed (03/03/2025) (committee substitute) — source
3. Final Act (03/28/2025) (committee substitute) — source
4. Introduced (02/24/2025) (committee substitute) — source
5. Reengrossed (03/04/2025) (committee substitute) — source
6. Rerevised (03/14/2025) (committee substitute) — source
7. Revised (03/13/2025) (committee substitute) — source
8. Signed Act (03/31/2025) (committee substitute) — source

Votes

• BILL — 33–0 (pass) · upper
• BILL — 51–13 (pass) · lower

Sponsors

• Barbara Kirkmeyer — primary (person)
• Emily Sirota — primary (person)
• Judy Amabile — primary (person)
• Rick Taggart — primary (person)
• A. Boesenecker — cosponsor (person)
• B. Pelton — cosponsor (person)
• B. Titone — cosponsor (person)
• C. Clifford — cosponsor (person)
• C. Espenoza — cosponsor (person)
• C. Kipp — cosponsor (person)
• D. Michaelson Jenet — cosponsor (person)
• F. Winter — cosponsor (person)
• I. Jodeh — cosponsor (person)
• J. Bacon — cosponsor (person)
• J. Bridges — cosponsor (person)
• J. Coleman — cosponsor (person)
• J. Gonzales — cosponsor (person)
• J. Phillips — cosponsor (person)
• L. Cutter — cosponsor (person)
• L. García — cosponsor (person)
• M. Ball — cosponsor (person)
• M. Lindsay — cosponsor (person)
• M. Snyder — cosponsor (person)
• N. Ricks — cosponsor (person)
• S. Bird — cosponsor (person)
• Y. Zokaie — cosponsor (person)

Timeline

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

• 2025-03-31T06:00:00+00:00 Governor Signed executive-signature
• 2025-03-28T06:00:00+00:00 Sent to the Governor executive-receipt
• 2025-03-28T06:00:00+00:00 Signed by the Speaker of the House
• 2025-03-28T06:00:00+00:00 Signed by the President of the Senate
• 2025-03-14T06:00:00+00:00 House Third Reading Passed - No Amendments passage, reading-3
• 2025-03-13T06:00:00+00:00 House Second Reading Special Order - Passed - No Amendments
• 2025-03-11T06:00:00+00:00 House Second Reading Laid Over Daily - No Amendments
• 2025-03-07T07:00:00+00:00 House Committee on Appropriations Refer Unamended to House Committee of the Whole committee-passage, referral-committee
• 2025-03-04T07:00:00+00:00 Introduced In House - Assigned to Appropriations introduction
• 2025-03-04T07:00:00+00:00 Senate Third Reading Passed - No Amendments passage, reading-3
• 2025-03-03T07:00:00+00:00 Senate Second Reading Passed - No Amendments reading-2
• 2025-02-27T07:00:00+00:00 Senate Committee on Appropriations Refer Unamended - Consent Calendar to Senate Committee of the Whole committee-passage
• 2025-02-24T07:00:00+00:00 Introduced In Senate - Assigned to Appropriations introduction

Source

OpenStates / OpenCivicData bulk snapshot 2026-07-01; origin ocd-bill/ad1a3e8b-eb91-4db8-9d66-c06882c4652e. Confidence: reported (aggregated from official Colorado legislature records).