Colorado AI Act Effective Date: June 30, 2026
Colorado's Artificial Intelligence Act (SB 24-205) takes effect June 30, 2026 — 76 days from now. It applies to any business using "high-risk AI systems" to make "consequential decisions" about Colorado residents in employment, credit, education, healthcare, or housing. Initial impact assessments are due September 28, 2026 (90 days after effective date).
Timeline
Colorado SB 24-205 signed into law
May 17, 2024
SB 25B-004 delay amendment enacted
October 1, 2025
TODAY — 76 days remaining
April 15, 2026
Act takes effect
June 30, 2026
Initial impact assessments due (90 days after effective)
September 28, 2026
First annual impact assessment renewal due
June 30, 2027
The Colorado Attorney General enforces SB 24-205. Maximum civil penalty: $20,000 per violation. The AG must give 60 days' notice to cure before enforcement. Businesses that do not have impact assessments on file, do not disclose AI use to consumers, or do not provide an appeal process face enforcement action.
Businesses that: (1) do business in Colorado, (2) use an AI system that makes or substantially assists in "consequential decisions" about Colorado residents, and (3) the AI system involves employment, credit/lending, education, healthcare/insurance, or housing/public accommodation.
What to do right now
Determine if you make "consequential decisions" affecting Colorado residents via AI
Identify all "high-risk AI systems" in scope — those with significant effects on consumers
Begin your initial impact assessment now — due September 28, 2026
Create consumer disclosure notices explaining AI use in consequential decisions
Implement an appeal/opt-out process for Colorado consumers
Document steps taken to mitigate algorithmic discrimination risk
Notify the Colorado AG of AI systems in use (check AG guidance for process)