California Air Resources Board Announces Proposed Deferral of 2026 Greenhouse Gas Emissions Reporting Deadline

On June 24, 2026, the California Air Resources Board (CARB) announced that it is updating its February 26, 2026, approved regulatory proposal related to the Climate Corporate Data Accountability Act (SB 253) and the Climate-Related Financial Risk Act (SB 261). The updates will defer the first-year reporting deadline for Scope 1 and Scope 2 greenhouse gas emissions under SB 253 from August 10, 2026, to November 10, 2026 (i.e., a three-month deferral).

In its announcement, CARB indicated that the proposed updates will also include making “limited changes to the regulation to clarify certain requirements.” CARB noted that it will release these changes for public comment for a 15-day comment period but did not say when it will do so.

For background on SB 253 and SB 261 as well as recent California climate legislation updates, see Deloitte’s December 4, 2025, Sustainability Spotlight. For more information about the initially approved rulemaking package, see Deloitte’s February 27, 2026, DART news item. For further details on the proposal, see CARB’s Web site and the related press release.