The California Air Resources Board (CARB) has deferred the initial reporting deadline under California Senate Bill 253, the Climate Corporate Data Accountability Act, moving the…
The California Air Resources Board (CARB) has deferred the initial reporting deadline under California Senate Bill 253, the Climate Corporate Data Accountability Act, moving the first Scope 1 and Scope 2 greenhouse gas (GHG) emissions disclosure date from August 10, 2026 to November 10, 2026. The three-month extension is designed to give covered entities additional runway to align internal processes with CARB's continuing refinements to the regulation, and it arrives as many large companies are still finalizing data governance, boundary-setting, and third-party assurance workflows required to support compliant disclosures.
The deferral applies to U.S. companies with more than $1 billion in annual revenue that do business in California. For these entities, the extension does not change the substantive scope of the reporting obligation, but it does provide meaningful time to close known gaps, particularly in areas such as organizational boundary determinations, emissions factor selection, data quality controls, and coordination with parent, subsidiary, and joint-venture reporting structures. Companies that were racing to meet the August deadline should use the additional months to strengthen documentation, internal controls, and audit readiness rather than treat the deferral as a pause in preparation.
Importantly, CARB's public comment period on the proposed modifications closes on August 11, 2026. This near-term window offers covered entities a valuable opportunity to weigh in on outstanding interpretive questions, practical implementation concerns, and areas where further clarification would meaningfully reduce compliance friction. Companies with material sustainability reporting programs, particularly those already navigating overlapping obligations under other domestic and international climate disclosure regimes, should consider submitting comments that surface real-world operational challenges and propose workable technical fixes.
Looking ahead, covered companies should continue to advance foundational work: mapping data sources across operating units, formalizing calculation methodologies, engaging assurance providers, and coordinating with sustainability, legal, finance, and IT stakeholders. Boards and audit committees should also be briefed on the revised timeline, evolving CARB guidance, and residual risk areas. Early alignment among these functions will position companies to submit accurate, well-supported disclosures when the November 10, 2026 deadline arrives, and to adapt efficiently as CARB finalizes the rules.
This alert is provided for general informational purposes only and does not constitute legal advice. Clients should consult counsel for guidance tailored to their specific circumstances and reporting obligations.