The era of voluntary climate disclosure is ending. Across the United States and around the world, regulators are transforming what was once a best practice into a legal obligation. For finance, operations, and IT professionals working in NetSuite environments, this shift carries real implications for how data is captured, managed, and reported.

The requirements are complex, the timelines are pressing, and the penalties for non-compliance are real. But here is the good news: organizations already running a modern ERP like NetSuite are better positioned than they may realize. This post covers the full landscape of climate disclosure law and explains how NetSuite and its ecosystem can form the backbone of a compliant, defensible reporting program.

The Federal Picture: SEC Rules in Limbo

In March 2024, the U.S. Securities and Exchange Commission (SEC) finalized its landmark Climate Disclosure Rule. The rule would have required public companies to disclose climate-related risks and greenhouse gas (GHG) emissions in their annual filings. It was immediately challenged in court, and the SEC voluntarily stayed its implementation in April 2024.

As of early 2026, the rule remains in legal limbo, with the current administration showing little appetite to defend it. The practical result: there is currently no active federal climate disclosure mandate in the United States. But that vacuum is being filled rapidly at the state level.

California: The Only State with Enacted Laws

California stands alone as the only U.S. state with climate disclosure laws that have been signed and are moving toward enforcement. Governor Gavin Newsom signed three bills in October 2023.

SB 253: Climate Corporate Data Accountability Act. This law covers U.S. business entities with annual revenues exceeding $1 billion that do business in California. It requires annual disclosure of Scope 1, 2, and 3 GHG emissions, calculated using the GHG Protocol. First disclosure of Scope 1 and 2 emissions is due August 10, 2026, with Scope 3 emissions required beginning in 2027. The Ninth Circuit declined to enjoin this law, and the California Air Resources Board (CARB) is developing final implementing regulations. Importantly, SB 253 applies to both public and private companies.

SB 261: Climate-Related Financial Risk Act. This law covers companies with annual revenues exceeding $500 million doing business in California. It requires a biennial report disclosing climate-related financial risks aligned with the TCFD framework, published on the company's website. SB 261 is currently under a Ninth Circuit injunction (issued November 18, 2025) that pauses enforcement while a constitutional challenge by the U.S. Chamber of Commerce proceeds. CARB has confirmed it will not enforce the January 1, 2026 deadline during the injunction period. The obligations are paused, but companies should maintain readiness.

AB 1305: Voluntary Carbon Market Disclosures Act. This law covers companies operating in California that make net-zero, carbon neutral, or emissions reduction claims, or that buy or sell carbon offsets. It requires annual substantiation of those claims and disclosure of offset methodology.

Important note for multi-state businesses: California's laws apply based on doing business in California, not being incorporated there. Any company with California-sourced revenues exceeding approximately $735,000 annually likely qualifies.

States with Pending Legislation

Several states have introduced California-inspired bills. None have been enacted as of early 2026, but the legislative momentum is notable.

  • New York has bills S9072 and S3697, with a $1 billion threshold for emissions and $500 million for risk reporting. Scope 3 would be required from 2028. S9072 passed the Senate and is awaiting the Assembly.
  • Illinois introduced HB 3673 with a $1 billion threshold and Scope 3 requirements. It is pending in the House Rules Committee.
  • New Jersey has SB 4117 with a $1 billion threshold and Scope 3 requirements. It remains in early stages.
  • Colorado has introduced various bills, though none have advanced significantly.

Most of these states are in "wait and see" mode, closely monitoring California's implementation experience before committing to final legislation. Given the 2026 compliance deadlines now hitting in California, expect these bills to accelerate in 2026 and 2027.

Federal Political Headwinds

The Trump administration has taken an active stance against state climate disclosure laws. An April 2025 executive order directed the Department of Justice to identify state climate laws that "burden energy production" and recommend action to block them. As of early 2026, no legal challenge to California's laws has been formally launched by the federal government, though the threat remains a wildcard.

The International Landscape

While the U.S. federal picture is uncertain, internationally the direction is clear: mandatory climate disclosure is becoming the global norm. For any NetSuite user with international operations, customers, or supply chain relationships, these requirements are highly relevant.

European Union: The CSRD and ESRS

The EU's Corporate Sustainability Reporting Directive (CSRD) is the most sweeping climate disclosure mandate in the world. It replaced the older Non-Financial Reporting Directive and dramatically expands the scope of companies required to report.

The reporting standard is the European Sustainability Reporting Standards (ESRS), which include detailed climate-specific requirements under ESRS E1. Reporting covers climate risks, GHG emissions across all three scopes, decarbonization targets, and the impact of the company's activities on the climate.

Who must report under the CSRD:

  • Large EU companies with more than 500 employees: Reporting began for FY 2024.
  • Other large EU companies (more than 250 employees, or more than 40 million euros in revenue, or more than 20 million euros in assets): FY 2025.
  • Listed SMEs: FY 2026, with an opt-out available through 2028.
  • Non-EU companies with more than 150 million euros in net turnover in the EU and at least one EU subsidiary or branch: FY 2028.

That last point is critical for U.S. companies. A U.S.-headquartered company with more than 150 million euros in EU revenue will be subject to CSRD reporting requirements beginning in 2028, regardless of whether the SEC rule ever takes effect.

The EU proposed an "Omnibus" package in early 2025 that would narrow the scope of the CSRD and delay some timelines by two years. As of early 2026, this proposal is still being debated. Companies should plan for original timelines while monitoring developments.

United Kingdom

The UK has implemented TCFD-aligned mandatory climate disclosure requirements for large companies and financial institutions, phased in from 2022. Listed companies and large private companies (more than 500 employees and more than 500 million pounds in turnover) must include climate-related financial disclosures in their annual reports. These are aligned with the four TCFD pillars: Governance, Strategy, Risk Management, and Metrics and Targets.

The UK is also developing its own UK Sustainability Reporting Standards (UK SRS) based on the ISSB's IFRS S1 and S2 standards, with implementation expected in the near term.

Australia

Australia enacted mandatory sustainability disclosure requirements effective January 1, 2025. The standards are the Australian Sustainability Reporting Standards (ASRS), aligned with IFRS S1 and S2.

The rollout is phased:

  • Group 1 (more than $500 million in assets, more than $500 million in revenue, or more than 500 employees): Reporting from January 2025.
  • Group 2 (more than $25 million in assets, more than $50 million in revenue, or more than 100 employees): From July 2026.
  • Group 3 (smaller entities): From July 2027.

The requirements include scenario analysis (including a 1.5 degree Celsius pathway), Scope 1 and 2 emissions initially, expanding to Scope 3 over time.

ISSB: The Emerging Global Baseline

The International Sustainability Standards Board (ISSB), operating under the IFRS Foundation, published two landmark standards in 2023:

  • IFRS S1: General Requirements for Disclosure of Sustainability-related Financial Information.
  • IFRS S2: Climate-related Disclosures, which is essentially a formalized, mandatory version of TCFD.

These standards are rapidly becoming the global baseline. Australia's ASRS, the UK's forthcoming SRS, and many other national frameworks are directly aligned with or derived from IFRS S1 and S2. Companies reporting under ISSB standards will find significant overlap with other national requirements.

Other Jurisdictions

  • Canada: ISSB-aligned standards have been proposed. Large financial institutions are already subject to OSFI climate risk guidance.
  • Japan: Mandatory ISSB-aligned disclosure for prime-listed companies has been in effect from FY 2023.
  • Singapore: Mandatory climate disclosures for listed companies from FY 2025, with large non-listed companies following from FY 2027.
  • Brazil: A CVM resolution requires TCFD-aligned disclosures for listed companies from 2023.
  • New Zealand: Mandatory TCFD-aligned reporting for large financial institutions and listed issuers has been in effect from 2023.

Key International Frameworks

If you're trying to make sense of the alphabet soup, here is a quick orientation:

  • TCFD focuses on climate risk, strategy, governance, and metrics. It is widely mandated or referenced globally and forms the conceptual backbone of most newer frameworks.
  • IFRS S1 / S2 (ISSB) covers full sustainability and climate disclosure. It has been adopted or adapted by Australia, the UK, Japan, Singapore, and others.
  • GHG Protocol is the universally referenced methodology for Scope 1, 2, and 3 emissions calculation. Virtually every disclosure framework points back to it.
  • CDP is a voluntary disclosure platform used by more than 23,000 companies. It is often required by customers and investors as part of supply chain due diligence.
  • GRI covers broad sustainability reporting and is still widely used, especially in EU contexts.
  • CSRD / ESRS is the comprehensive EU sustainability reporting framework, mandatory for qualifying EU and non-EU companies.

What Companies Actually Have to Report

Regardless of the specific framework or jurisdiction, most climate disclosure requirements converge on the same core data categories.

GHG Emissions: The Three Scopes

The GHG Protocol Corporate Standard defines three categories of emissions, and understanding these is foundational to any compliance program.

Scope 1: Direct emissions. These come from sources owned or controlled by the company. Think on-site combustion (boilers, furnaces), company-owned vehicles, refrigerants, and industrial processes.

Scope 2: Indirect energy emissions. These come from the generation of purchased electricity, heat, steam, or cooling consumed by the company. This is typically the easiest scope to measure.

Scope 3: Value chain emissions. These are all other indirect emissions that occur upstream or downstream in the company's value chain. They include purchased goods and services, business travel, employee commuting, transportation and distribution, use of sold products, and end-of-life treatment. Scope 3 is often the largest emissions category and the hardest to measure. It requires engagement with suppliers and customers.

Climate-Related Financial Risk

Many frameworks (SB 261, CSRD, UK requirements, ISSB S2) also require disclosure of climate-related financial risks. These fall into several categories:

  • Physical risks: Both chronic risks (such as sea-level rise and temperature change) and acute risks (such as extreme weather events) to assets, operations, and supply chains.
  • Transition risks: Regulatory, market, technological, and reputational risks associated with the shift to a low-carbon economy.
  • Governance: How the board and management oversee climate-related risks and opportunities.
  • Strategy: How climate risks affect the business model and strategic plan.
  • Scenario analysis: How the business performs under different climate futures, such as a 1.5 degree Celsius pathway versus a high-emissions pathway.

The Role of ERP in Climate Disclosure

Here is the fundamental challenge: climate disclosure is a data problem. Producing auditable, framework-compliant emissions reports requires pulling information from across the enterprise. Energy bills, travel expenses, supplier invoices, fleet records, utility consumption, production data, and more.

For most organizations, this data already lives in their ERP system. That makes the ERP the logical center of gravity for a climate disclosure program, and it is why NetSuite users are better positioned than they might think.

What NetSuite Brings Natively

NetSuite's core architecture provides several capabilities that are directly relevant to climate disclosure.

Centralized Data Hub. NetSuite consolidates financial and operational data into a single system: purchasing, accounts payable, expense management, inventory, manufacturing, and more. This is the foundation for emissions calculations, since most activity-based data (energy costs, travel spend, freight invoices) flows through finance.

Multi-Entity and Multi-Subsidiary Support. For companies with multiple locations, subsidiaries, or international operations, NetSuite's multi-book and multi-subsidiary architecture supports the kind of consolidated, location-level emissions reporting that laws like SB 253 require.

Supply Chain Visibility. NetSuite's procurement and vendor management capabilities provide data on supplier spend and materials. These are critical inputs for Scope 3 Category 1 (Purchased Goods and Services) calculations, which are typically the largest component of Scope 3 for manufacturers and distributors.

Custom Saved Searches and Reports. NetSuite's reporting engine can be configured to produce disclosure-ready outputs, create audit trails, and build management dashboards tracking emissions KPIs alongside financial metrics.

Planning and Budgeting. NetSuite Planning and Budgeting (NSPB) can be extended to model and track emissions reduction targets, climate-related capital expenditures, and scenario planning aligned with TCFD requirements.

Audit Trail and Controls. NetSuite's native audit logging, role-based access controls, and financial controls support the third-party verification and assurance requirements that many disclosure regimes mandate.

The Gap and How to Fill It

NetSuite does not natively calculate GHG emissions or produce framework-specific disclosure reports (such as a TCFD report or a CDP submission). To bridge that gap, companies typically need one of two things:

  • A purpose-built carbon accounting SuiteApp that runs natively inside NetSuite and pulls from existing data.
  • A third-party sustainability platform connected to NetSuite via integration.

In practice, I've found that the native SuiteApp route is generally preferred because it eliminates data duplication, reduces integration complexity, and keeps everything in one system.

Leading NetSuite Carbon Accounting SuiteApps

CarbonSuite is a Built for NetSuite SuiteApp designed specifically for emissions accounting and compliance reporting. It pulls data from existing NetSuite records (bills, expense reports, work orders, vendor data) and runs them through an AI-powered calculation engine. Key features include:

  • Automated Scope 1, 2, and 3 calculations using the GHG Protocol
  • Compliance with CSRD, California SB 253, CDP, TCFD, GRI, and ISSB frameworks
  • An Emission Workbench for reviewing and auditing calculations
  • AI Data Scanner for accelerating data classification
  • Carbon offset and credit tracking
  • Net zero target setting and tracking

CarbonSuite is notable for its international compliance coverage, which makes it particularly useful for companies subject to both California's laws and the EU's CSRD.

SuiteEarth is a NetSuite-native platform that emphasizes integration of sustainability data with operational and financial performance. Its features include:

  • Automated Scope 1, 2, and 3 emissions tracking from NetSuite transaction data
  • Intelligent calculation engine with real-time or periodic measurement
  • Coverage across multiple subsidiaries, departments, and locations without third-party integrations
  • AI-powered suggestions for emissions reduction opportunities
  • Embedded workflows for engaging employees and suppliers in data collection
  • Compliance with GHG Protocol, SEC (TCFD), and CDP frameworks

SuiteEarth's emphasis on embedding sustainability into day-to-day business processes makes it well suited for organizations that want to make emissions management an operational discipline, not just a reporting exercise.

Brightest takes a different approach. Rather than a native SuiteApp, it is a standalone sustainability platform with a NetSuite integration. It supports Scope 1, 2, and 3 carbon accounting, ESG KPI tracking, supply chain engagement, and reporting syncs from NetSuite data. This approach can be useful for large enterprises that want a single sustainability platform across multiple ERPs.

A Practical Compliance Roadmap

Here is a recommended approach for NetSuite users preparing for climate disclosure.

Step 1: Map Your Data. Inventory the emissions-relevant data already in NetSuite: utility payments, fuel purchases, travel and expense reports, freight invoices, manufacturing inputs, and supplier spend. This establishes your baseline data availability and identifies gaps.

Step 2: Determine Your Reporting Obligations. Based on revenue, geography, and business model, identify which frameworks apply: California SB 253, SB 261, CSRD, ISSB, TCFD, or others. Different frameworks have different data requirements and timelines.

Step 3: Select and Deploy a Carbon Accounting SuiteApp. Evaluate CarbonSuite or SuiteEarth (or both) based on your framework requirements, international footprint, and budget. Many organizations start with a pilot covering Scope 1 and 2, then expand to Scope 3.

Step 4: Engage Your Supply Chain. Scope 3 data is typically the biggest challenge. Use NetSuite's vendor and procurement data as a starting point, and deploy supplier engagement tools (often included in SuiteApps) to collect primary emissions data from key suppliers.

Step 5: Build Reporting Outputs. Configure saved searches, dashboards, and formal reports in NetSuite aligned to your specific disclosure requirements. For TCFD-aligned reports (SB 261, CSRD, ISSB S2), additional narrative disclosures about governance, strategy, and risk management will also be required.

Step 6: Prepare for Assurance. Many disclosure regimes require or recommend third-party verification of emissions data. NetSuite's audit logging and the calculation documentation in CarbonSuite and SuiteEarth support this process significantly.

Step 7: Set Targets and Monitor Progress. Use NetSuite Planning and Budgeting alongside your SuiteApp to set science-based emissions reduction targets and track performance over time. This turns compliance into a strategic program, not just a checkbox.

Common Challenges and How to Address Them

"We don't have Scope 3 data." Almost no company does at first. Start with spend-based estimates using supplier invoice data from NetSuite. That is an accepted methodology under the GHG Protocol. Refine with primary supplier data over time.

"Our data is in too many systems." This is exactly what NetSuite's integration capabilities are for. Prioritize pulling the highest-emission categories first. For most businesses, that means energy, travel, and freight.

"We're not sure if the laws apply to us." California's "doing business" definition is broad. Over approximately $735,000 in California sales likely qualifies. If your company is near the $500 million or $1 billion revenue thresholds, consult legal counsel. The multi-state trend means the net is widening.

"The frameworks are too complex." This is a real barrier, but SuiteApps like CarbonSuite and SuiteEarth are specifically designed to abstract framework complexity. You input operational data, and the system maps it to the right methodology.

"We're worried about greenwashing liability." Accuracy and audit trails matter enormously here. NetSuite's native controls combined with a built-for-purpose SuiteApp provide defensible documentation of data sources, calculation methodologies, and assumptions.

Act Now, Before the Deadlines Arrive

Climate disclosure compliance is no longer a question of if, but when. For many companies, when is 2026. California's SB 253 deadline of August 10, 2026 is holding firm. The CSRD is already in effect for large EU companies. Australia's mandatory reporting is underway. And a wave of state legislation is accelerating in the wake of federal inaction.

For NetSuite professionals, the message is clear: your ERP is your foundation. The operational and financial data needed to calculate emissions and document climate risks is already flowing through NetSuite. The missing piece is a carbon accounting layer, and that piece now exists in purpose-built SuiteApps designed specifically for the NetSuite ecosystem.

Organizations that start building their climate disclosure capabilities now will be better positioned on every dimension: regulatory compliance, investor relations, customer requirements, and the growing body of evidence that sustainability performance correlates with long-term financial resilience.

The question is not whether your organization will need to disclose. The question is whether you'll be ready when it's required.

Quick Reference: Disclosure Timelines

Here is a summary of key disclosure timelines by jurisdiction.

  • California SB 253: $1 billion revenue threshold. First disclosure of Scope 1 and 2 due August 2026. Scope 3 required from 2027.
  • California SB 261: $500 million revenue threshold. Timeline currently paused due to injunction. Risk report only (not emissions).
  • EU CSRD (large companies, 500+ employees): Reporting began for FY 2024. Scope 3 required.
  • EU CSRD (other large companies, 250+ employees or 40M+ euros revenue): FY 2025. Scope 3 required.
  • EU CSRD (non-EU companies, 150M+ euros EU revenue): FY 2028. Scope 3 required.
  • UK (large companies, 500+ employees and 500M+ pounds turnover): Already in effect. Scope 3 required.
  • Australia Group 1 (500M+ in assets or revenue): January 2025. Scope 3 phased in.
  • Australia Group 2 (25M+ assets or 50M+ revenue): July 2026. Scope 3 phased in.
  • Japan (prime-listed companies): FY 2023. Scope 3 required.
  • Singapore (listed companies): FY 2025. Scope 3 phased in.
  • New York S9072 (proposed): $1 billion revenue threshold. 2028 if enacted. Scope 3 required.
  • Illinois HB 3673 (proposed): $1 billion revenue threshold. 2027 if enacted. Scope 3 required.