CARB Releases Draft Regulations and Announces Public Hearing

On December 9, 2025, the California Air Resources Board (CARB) released proposed regulatory text and rulemaking materials related to the Climate Corporate Data Accountability Act (SB 253) and Climate‐Related Financial Risk Act (SB 261), as amended by SB 219. The proposed regulatory text includes sections on applicability, definitions, fee calculation, fee payment and collection, fee enforcement, and the deadline for reporting under SB 253.

Concurrently with CARB’s posting of materials on its Web site, the proposed regulatory text was sent to the California Office of Administrative Law (OAL). The proposed text is expected to be published for public feedback for a 45-day public comment period ending on February 9, 2026. If any revisions are made to any of the documents on the published rulemaking package before formal publication, CARB will update its Web site and notify stakeholders.

CARB also posted a notice on December 9, 2025, indicating that a public hearing will be held on February 26, 2026, to consider approving for adoption the proposed initial regulations. The agenda for the public hearing will be posted 10 days before the hearing.

For background on SB 253 and SB 261 and recent California climate legislation updates, see Deloitte’s December 4, 2025, Sustainability Spotlight. For more information about the draft regulations and public hearing, see CARB’s Web site.