Explainer:
New York’s Climate Corporate Data Accountability Act 2026

With California already shaping corporate climate reporting, New York is now moving toward its own mandatory disclosure regime. The proposal positions the state to become a major driver of emissions transparency on the U.S. East Coast, particularly as federal regulation remains extremely limited.

For companies that may fall within scope, early preparation is essential. Below is a structured overview of the proposal, how it compares with existing rules, and what organisations should do next.

Overview of the proposed Act

The New York Climate Corporate Data Accountability Act (CCDAA) – Senate Bill S3456 – was passed by the New York State Senate on 10 February 2026 and is now under consideration by the Assembly.

The legislation would require large businesses operating in New York to publicly disclose greenhouse gas (GHG) emissions annually.

Who is in scope?

The Act applies to:

U.S.-based public and private companies
Annual revenues exceeding $1 billion
Companies operating within New York State

What must be reported?

Reporting entities must publish annual emissions reports covering all three GHG scopes:

Scope 1 — Direct emissions
Emissions from sources owned or directly controlled by the company, regardless of location.

Scope 2 — Purchased energy emissions
Indirect emissions from electricity purchased and consumed.

Scope 3 — Value chain emissions
Indirect emissions across the company’s value chain that are not owned or controlled by the company.

Requiring Scope 3 disclosure is a major feature of the Act, addressing longstanding concerns that corporate reporting often misses the majority of real-world climate impact.

How should emissions calculations be performed?

Companies must calculate emissions using Greenhouse Gas Protocol standards, ensuring consistency with international reporting frameworks.

Where must reports be published?

All disclosures would be published on a centralised digital platform, enabling:

Public oversight
Cross-company comparison
Increased investor and stakeholder scrutiny

When are the reporting deadlines?

The Act proposes a phased rollout to ease implementation:

Key milestones

Law takes effect: 2027
First reporting year: 2026 data
Annual reporting required for Scopes 1–3

Independent verification

Mandatory third-party verification of emissions data
Limited assurance for Scopes 1 and 2 initially
Transition to reasonable assurance by 2032

Comparison with California’s approach

The proposal closely mirrors legislation in California – SB253 – aiming to create consistent climate disclosure expectations across major U.S. markets.

Shared features

Both frameworks require:

Coverage of companies with > $1B revenue
Scope 1, 2 and 3 reporting
Alignment with GHG Protocol standards
Third-party verification
Public disclosure of emissions data

Key difference: oversight

In New York, administration would sit with the New York Department of Environmental Conservation, embedding the Act within environmental conservation and state finance law.

California’s equivalent law has faced legal challenges from the U.S. Chamber of Commerce, while New York’s proposal is still progressing through the legislative process.

Implication:
Companies already preparing for California compliance can reuse much of their groundwork for New York.

Relationship to New York’s existing GHG Reporting Program

Although both focus on emissions data, the two frameworks serve distinct purposes.

Existing GHG Reporting Program

Applies mainly to facilities and suppliers
Threshold: 10,000 tCO₂e annually
Used for state-level emissions tracking

Proposed CCDAA

Applies at the company level
Based on revenue threshold
Requires full value chain (Scope 3) reporting
Focuses on public disclosure and financial risk

Some organisations may need to comply with both, making integrated reporting systems critical.

Preparation priorities for companies

Organisations potentially in scope should begin preparations now.

Immediate actions

Define Scope 1 and Scope 2 organisational boundaries
Map value chain activities for Scope 3 emissions
Identify data gaps in current reporting processes
Assess need for proxy or secondary data
Plan for third-party assurance engagements

Robust data collection is essential. Non-compliance could lead to financial penalties, reputational damage, and reduced stakeholder trust.

How the 51toCarbonZero platform supports compliance:

Manual compliance will be challenging, particularly for organisations with complex structures.

Our platform can support:

Full carbon inventory creation aligned with GHG Protocol
Supply chain module – supporting supplier data collection and emissions
Multi-jurisdiction reporting (New York, California, global)
Audit-ready documentation and evidence library
Transition module for decarbonisation and net-zero planning over short and long term

As climate disclosure expands at the state level, digital tools are becoming central to efficient compliance.

Key takeaway

The New York Climate Corporate Data Accountability Act represents a major step toward standardised corporate climate transparency in the United States. By mandating verified Scope 1–3 disclosures, the proposal pushes companies toward more rigorous and comparable reporting practices aligned with global standards.

For companies likely to fall within scope, early preparation will be critical to building reliable, decision-ready climate data systems and avoiding last-minute compliance risk.

Current Bill Status -In Assembly Committee