Colorado enacted HB1364, establishing the official Consumer Price Index calculation methodology for the 2025 calendar year. The bill was signed into law by the Governor on April 2, 2026, during the 2026 Regular Session. Sponsored by a bipartisan coalition including Representatives Sirota, Taggart, Brown and Senators Bridges, Kirkmeyer, Amabile, the legislation was immediately referred to the House Appropriations Committee.

Government agencies and fiscal administrators should review internal procedures to ensure compliance with the newly codified CPI calculation methodology. The change affects how inflation adjustments are applied to tax brackets, public assistance programs, and government contractor rates. Tax filers and benefit recipients should monitor for subsequent adjustments to their obligations or benefits based on the new calculation standard.