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SB 25-180 CO
Became Law

Population Growth Calculation

CO · session 2025A · Senate · bill

A state bill is a proposed law in a state legislature — separate from the U.S. Congress. Learn more →

Introduced Feb 24, 2025

Latest action (Mar 31, 2025) Introduced In Senate - Assigned to Appropriations

Summary

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: The federal census bureau's estimate of state population (census estimate) for the previous calendar year, as of December in the current calendar year; and The census estimate for the current calendar year, as of December in the current calendar year. This method for calculating population growth can lead to either double-counting or under-counting of population changes in census estimates. If the federal census bureau revises a census estimate upward for a given year, population growth will be understated and the fiscal year spending limit will be lower. The opposite is true if the federal census bureau revises a census estimate downward. In either case, under this method for calculating population growth, population growth would be measured inaccurately. The act adjusts the method of calculating population growth. Under the act, population growth is calculated by determining the percentage change between: The census estimate, as of December in the previous calendar year, for the previous calendar year; and The census estimate, as of December in the current calendar year, for the current calendar year. This approach prevents double-counting or under-counting population changes as a result of revised census estimates and results in a more accurate measurement of population growth. (Note: This summary applies to this bill as enacted.)

Sponsors (4)

22 coauthors / cosponsors

Action history (13)

  1. Mar 31, 2025 Governor Signed · executive
  2. Mar 28, 2025 Sent to the Governor · executive
  3. Mar 28, 2025 Signed by the Speaker of the House · lower
  4. Mar 28, 2025 Signed by the President of the Senate · upper
  5. Mar 14, 2025 House Third Reading Passed - No Amendments · lower
  6. Mar 13, 2025 House Second Reading Special Order - Passed - No Amendments · lower
  7. Mar 11, 2025 House Second Reading Laid Over Daily - No Amendments · lower
  8. Mar 7, 2025 House Committee on Appropriations Refer Unamended to House Committee of the Whole · lower
  9. Mar 4, 2025 Introduced In House - Assigned to Appropriations · lower
  10. Mar 4, 2025 Senate Third Reading Passed - No Amendments · upper
  11. Mar 3, 2025 Senate Second Reading Passed - No Amendments · upper
  12. Feb 27, 2025 Senate Committee on Appropriations Refer Unamended - Consent Calendar to Senate Committee of the Whole · upper
  13. Feb 24, 2025 Introduced In Senate - Assigned to Appropriations · upper

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