U.S. State Climate Disclosure Laws Compared

With federal climate disclosure rulemaking stalled, individual states have become the primary source of mandatory climate reporting requirements in the U.S. California is furthest along, but it's no longer alone, and the pattern other states are following is consistent enough to be worth understanding as a pattern, not just a list of individual laws.

This article reflects the regulatory status as of July 2026, which changes frequently. This is general information, not legal advice, consult qualified counsel for guidance on specific obligations.

California: The Template

California's SB 253 and SB 261 established the structure nearly every other state proposal now follows, a two law approach separating emissions disclosure from financial risk disclosure, set at $1 billion and $500 million revenue thresholds respectively. SB 253 is proceeding through updated CARB rulemaking, with a proposed November 10, 2026 first deadline for Scope 1 and 2 emissions. SB 261 is currently paused by a federal court injunction.

New York: The Closest Follower

New York's proposed Climate Corporate Data Accountability Act mirrors California's structure closely enough that a company built to California's standard needs almost no additional work to satisfy New York's proposal. As of mid 2026, the emissions disclosure bill has passed the state Senate but not yet the Assembly or been signed into law, and the companion climate risk bill has moved more slowly.

Other States Watching California's Lead

Beyond California and New York, several other states have introduced or discussed similar climate disclosure legislation, generally following the same emissions plus financial risk structure, though none has advanced as far as New York's bills as of mid 2026. The pattern is consistent, states with large economies and significant corporate presence are the ones most likely to move first, since a state level disclosure requirement only has real teeth against companies with meaningful business ties to that state.

The Common Thread Across States

Despite differences in exact thresholds and timelines, active and proposed state climate disclosure laws share a consistent structure worth understanding once, rather than state by state:

• A revenue threshold, typically $500 million to $1 billion, tied to doing business in the state rather than being headquartered there
• Separate treatment of emissions disclosure, generally following the GHG Protocol, and financial risk disclosure, generally following TCFD or the IFRS Sustainability Disclosure Standards
• A phased rollout, starting with Scope 1 and 2 emissions and adding Scope 3 and assurance requirements over subsequent years
• Legal challenges on First Amendment grounds, which have so far succeeded in pausing California's financial risk law but not its emissions law

What This Means for Multi State Companies

A company operating across several of these states doesn't need a separate compliance program for each one. Building to California's standard, the most detailed and furthest along of the active laws, covers the overwhelming majority of what other states are proposing. The practical planning question isn't which state's specific deadline to prioritize, it's building emissions and climate risk data infrastructure robust enough to satisfy the strictest version of these requirements, since that infrastructure will very likely need to support additional states' requirements as they come online.