Are you ready for California’s climate disclosure laws?

This resource paper helps companies understand the scope and requirements of SB 253 and SB 261, outlining key obligations and preparation steps for reporting beginning in 2026.

Key Findings

First-of-its-kind laws — California is the first U.S. state to require disclosure of greenhouse gas emissions and climate-related risks.

Phased implementation — Entities meeting revenue thresholds must disclose Scope 1 and 2 emissions with assurance starting in 2026, and Scope 3 emissions beginning in 2027.

Beyond federal rules — California moved ahead of the SEC, whose proposed climate disclosure rule remains delayed and uncertain.

Summary

Signed into law in October 2023, SB 253 and SB 261 require companies doing business in California to disclose greenhouse gas emissions and climate-related financial risks. These mandates represent a major step forward in climate transparency, applying more rigorous standards than pending federal rules. Companies must prepare now to meet assurance requirements, conduct emissions accounting, and develop reporting aligned with the Task Force on Climate-related Financial Disclosures (TCFD).

What You’ll Learn

This resource paper outlines the specific requirements of SB 253 and SB 261, the phased disclosure timeline, and how your organization can begin preparing for reporting in 2026. It also provides guidance on developing strategies to measure, assure, and report emissions and climate risks effectively.

Research Paper

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