Regulatory tracker: Carbon markets & offsets integrity rules by jurisdiction — what's live, pending, and proposed

Global carbon markets transacted $948 billion in 2024, a 16% increase over 2023, yet regulatory fragmentation across jurisdictions has left compliance teams navigating more than 70 distinct national and subnational carbon pricing instruments, each with different offset eligibility rules, verification standards, and integrity requirements (World Bank, 2025). The gap between the speed of market growth and the pace of regulatory harmonization is widening, creating both compliance risk and strategic opportunity for organizations active in voluntary and compliance carbon markets.

Why It Matters

Carbon market regulation is no longer a niche concern for sustainability teams. The convergence of mandatory climate disclosure rules (EU CSRD, SEC Climate Rule, California SB 253), anti-greenwashing enforcement actions, and the operationalization of Article 6 of the Paris Agreement has elevated carbon credit quality and regulatory compliance to board-level issues. Organizations that purchased offsets under loose voluntary standards now face reputational, legal, and financial exposure as regulators retroactively scrutinize credit quality claims.

The regulatory trajectory is unmistakable: every major jurisdiction is tightening standards for what qualifies as a legitimate carbon credit, who can issue and verify them, and how corporations can represent offset use in public claims. Companies that track these developments jurisdiction by jurisdiction and adjust procurement strategies accordingly will avoid the compliance cliffs that catch slower movers off guard.

For product and design teams building carbon market platforms, registries, or corporate sustainability tools, understanding these regulatory distinctions is essential for feature prioritization, data architecture, and market positioning.

Key Concepts

Compliance vs. Voluntary Market Regulation

Compliance carbon markets operate under legally binding emissions caps set by governments, with carbon allowances and eligible offsets defined by statute. The EU Emissions Trading System (EU ETS), California's Cap-and-Trade Program, and China's national ETS are the three largest compliance systems. Voluntary carbon markets (VCMs) operate outside government mandates, with standards set by independent bodies such as Verra (Verified Carbon Standard), Gold Standard, and the American Carbon Registry. Regulatory developments increasingly blur this boundary as governments impose integrity requirements on voluntary credit claims.

Article 6 of the Paris Agreement

Article 6, finalized at COP26 in Glasgow and operationalized at COP28 in Dubai, creates the framework for international carbon credit trading between countries. Article 6.2 governs bilateral transfers of mitigation outcomes between nations through Internationally Transferred Mitigation Outcomes (ITMOs), requiring corresponding adjustments to national emissions inventories to prevent double counting. Article 6.4 establishes a centralized UN crediting mechanism (the successor to the Clean Development Mechanism) with a new Supervisory Body that sets methodological standards and oversees issuance. Both mechanisms are now generating their first credits, but implementation rules continue to evolve across participating countries.

Corresponding Adjustments and Double Counting

Corresponding adjustments are accounting entries that ensure a tonne of CO2 reduced or removed is only counted once toward climate targets. When a country authorizes the export of a carbon credit under Article 6.2, it must add that amount back to its own emissions inventory so the same reduction is not claimed by both the selling and buying country. This mechanism has profound implications for voluntary market participants: credits from countries that do not apply corresponding adjustments face growing buyer skepticism, and several voluntary standards now require or recommend corresponding adjustments for claims of contribution to global mitigation.

What's Working

European Union: Live and Pending Rules

The EU has the most advanced regulatory architecture for carbon market integrity. The EU ETS, covering power generation, heavy industry, and intra-EU aviation, is live and tightening, with the Market Stability Reserve removing surplus allowances and free allocation declining annually under the "Fit for 55" package. The Carbon Border Adjustment Mechanism (CBAM) entered its transitional reporting phase in October 2023, with full financial obligations beginning January 2026 for importers of steel, cement, aluminum, fertilizers, electricity, and hydrogen. CBAM effectively extends EU carbon pricing to imported goods, requiring importers to purchase CBAM certificates corresponding to the embedded emissions of their products (European Commission, 2025).

On voluntary market claims, the EU Green Claims Directive (proposed in 2023, with trilogue negotiations completed in late 2025) will require companies making carbon neutrality or offset-based environmental claims to substantiate them using credits that meet specific quality criteria, including additionality, permanence, and independent verification. Claims based on avoidance credits (such as REDD+ forestry) without corresponding adjustments will face heightened scrutiny and potential enforcement action under the Directive's provisions. Member states are expected to transpose the Directive into national law by mid-2027.

United States: State-Level Leadership and Federal Signals

The US has no federal carbon price, but a patchwork of state and federal regulations shapes carbon market activity. California's Cap-and-Trade Program, operated by the California Air Resources Board (CARB), is the most mature US compliance market, covering approximately 80% of statewide greenhouse gas emissions. CARB allows regulated entities to use offset credits for up to 4% of their compliance obligation (reduced from 8% in earlier compliance periods), with eligible offset protocols limited to six project types including US forest projects, mine methane capture, and ozone-depleting substance destruction. CARB announced in 2025 a review of its offset program to align eligibility criteria with updated permanence and additionality standards (CARB, 2025).

Washington State's Climate Commitment Act, which launched its cap-and-invest program in January 2023, generated $1.8 billion in allowance auction revenue in its first two years. The program recognizes a narrower set of offset protocols than California and includes explicit environmental justice provisions that restrict offset use in communities disproportionately affected by pollution. Oregon's Climate Protection Program, while facing legal challenges, represents an additional compliance market with offset interaction rules.

At the federal level, the Commodity Futures Trading Commission (CFTC) proposed guidance in 2024 for voluntary carbon credit derivative contracts traded on CFTC-regulated exchanges, establishing listing standards that reference credit quality attributes including additionality, permanence, and quantification accuracy. While not a direct regulation of carbon credits themselves, the CFTC guidance creates de facto quality benchmarks that influence voluntary market integrity through financial market infrastructure (CFTC, 2024).

United Kingdom: Post-Brexit Market Development

The UK ETS, which replaced EU ETS coverage for UK installations after Brexit, is live and expanding. The UK government confirmed in 2025 that the UK ETS will extend to cover waste incineration and energy-from-waste facilities beginning in 2028, and consultations on including maritime shipping emissions are underway. The UK ETS Authority has signaled potential linkage with the EU ETS, which would create the world's largest linked carbon market, though negotiations remain at a preliminary stage.

For voluntary markets, the UK's Advertising Standards Authority (ASA) has issued multiple rulings against corporations making unsubstantiated carbon neutral claims, establishing enforcement precedent that predates formal legislative requirements. The UK's Integrity Council for the Voluntary Carbon Market (ICVCM), while an independent global body headquartered in London, has published its Core Carbon Principles (CCPs) and begun assessing and tagging credits that meet CCP benchmarks, with the first CCP-labeled credits available for trading from mid-2025 (ICVCM, 2025).

Asia-Pacific: Emerging Compliance Architectures

China's national ETS, covering the power sector (approximately 4.5 billion tonnes of CO2 annually), is the world's largest by covered emissions. The Ministry of Ecology and Environment expanded the ETS to include cement and aluminum sectors in 2025, with steel, petrochemicals, and chemicals slated for inclusion by 2027. China restarted its voluntary offset program (China Certified Emission Reductions, or CCERs) in January 2024 after a five-year suspension, with tightened methodologies limited to four project types: offshore wind, mangrove restoration, solar thermal power, and forestry carbon sinks (MEE, 2025).

Singapore's carbon tax, set at SGD 25 per tonne in 2024 and rising to SGD 45 by 2026 and SGD 50 to 80 by 2030, allows taxable facilities to surrender eligible international carbon credits for up to 5% of their taxable emissions. The Singapore government has signed bilateral agreements with Papua New Guinea, Ghana, Vietnam, Paraguay, and several other nations under Article 6.2, establishing frameworks for corresponding adjustments on transferred credits. Japan's GX-ETS (Green Transformation Emissions Trading Scheme) launched its voluntary phase in April 2023, with mandatory compliance obligations expected from 2026 for high-emitting sectors.

What's Not Working

Regulatory fragmentation remains the central challenge. No two compliance markets define offset eligibility identically, and interoperability between systems is limited. A credit eligible under California's program may not qualify under Washington's, the EU ETS does not accept external offsets at all, and China's CCER program has a project type list that overlaps minimally with standards like Verra or Gold Standard. This fragmentation increases transaction costs, inhibits price discovery, and complicates corporate procurement strategies for multinational organizations.

Article 6 implementation is progressing slowly. As of early 2026, fewer than 15 countries have completed the domestic legal and institutional frameworks required to authorize ITMO transfers. The Article 6.4 Supervisory Body has approved only a handful of methodologies, and the transition of legacy CDM projects to the new mechanism has been mired in procedural delays. Companies that anticipated a functioning Article 6 market by 2025 have been forced to rely on bilateral agreements and voluntary standards to fill the gap.

Anti-greenwashing enforcement is outpacing corporate preparedness. The Netherlands Authority for Consumers and Markets fined several companies in 2024 for misleading carbon neutral claims. France's Climate and Resilience Law already restricts carbon neutrality advertising. Australia's ACCC has launched enforcement actions against misleading sustainability claims. Many companies using offsets in marketing have not updated their claim substantiation to meet emerging legal standards, leaving them exposed to regulatory action across multiple jurisdictions simultaneously.

Key Players

Established organizations: Verra (largest voluntary credit registry with over 1.8 billion credits issued), Gold Standard (impact-focused standard with dual climate-development criteria), International Emissions Trading Association (IETA, industry body shaping Article 6 implementation), ICVCM (Integrity Council setting Core Carbon Principles for voluntary market quality), VCMI (Voluntary Carbon Markets Integrity Initiative developing corporate claims guidance), World Bank Carbon Pricing Leadership Coalition (CPLC, convening governments on carbon pricing design)

Startups and platforms: Sylvera (AI-driven carbon credit quality ratings), BeZero Carbon (credit risk ratings and analytics), Pachama (satellite-based forest credit verification), Xpansiv (CBL marketplace for environmental commodity trading), Toucan Protocol (on-chain carbon credit infrastructure)

Regulators and multilateral bodies: European Commission DG CLIMA (EU ETS and CBAM administration), California Air Resources Board (Cap-and-Trade Program oversight), UK ETS Authority (joint UK government body), UNFCCC Article 6 Supervisory Body (centralized crediting mechanism governance), CFTC (US derivatives regulation for carbon contracts), Singapore National Climate Change Secretariat (carbon tax and Article 6 bilateral agreements)

Action Checklist

• Map your organization's carbon credit portfolio against jurisdiction-specific eligibility rules for every market where you operate or source credits
• Audit existing carbon neutral or net-zero marketing claims against EU Green Claims Directive requirements and local anti-greenwashing rules
• Evaluate whether credits in your portfolio carry corresponding adjustments under Article 6.2 or are authorized by the host country government
• Assess CBAM reporting obligations if your supply chain imports covered goods (steel, cement, aluminum, fertilizers, hydrogen, electricity) into the EU
• Track ICVCM Core Carbon Principle assessments and prioritize CCP-labeled credits for future procurement
• Monitor California's offset protocol review for changes to eligibility percentages and approved project types
• Build compliance dashboards that flag regulatory changes across key jurisdictions in near-real time
• Engage legal counsel to review claim substantiation documentation in every jurisdiction where carbon-related marketing claims are made

FAQ

Q: Can a single carbon credit satisfy compliance obligations in multiple jurisdictions? A: Generally, no. Each compliance market has its own registry, eligibility criteria, and retirement process. A credit retired under California's Cap-and-Trade cannot also be used under the UK ETS or China's CCER system. Cross-border credit transfers under Article 6.2 require corresponding adjustments that prevent the same reduction from being claimed by multiple parties. Some voluntary credits may be recognized in multiple compliance systems if they meet each system's specific requirements, but this is rare and requires separate verification and registration processes.

Q: How should companies prepare for the EU Green Claims Directive? A: Start by inventorying all public environmental claims that reference carbon offsets or carbon neutrality. Assess whether the credits underlying those claims meet the Directive's quality criteria, particularly additionality, permanence, accurate quantification, and independent third-party verification. Transition away from avoidance-only credit portfolios toward removal credits with robust monitoring, reporting, and verification. Update marketing and communications guidelines to align with the Directive's substantiation requirements before the transposition deadline. Engage with your legal team across EU member states, as national implementation may introduce additional requirements.

Q: What is the practical impact of the ICVCM Core Carbon Principles on credit procurement? A: The CCPs establish a quality benchmark that is increasingly referenced by corporate buyers, financial institutions, and regulators. Credits that receive CCP labels signal higher integrity and are expected to command price premiums of 15 to 40% over non-labeled credits based on early market data. Several large corporate buyers, including those participating in the VCMI Claims Code, have committed to procuring CCP-eligible credits. While CCP labeling is voluntary, its influence on market norms and potential incorporation into regulatory frameworks (such as CORSIA for aviation and the EU Green Claims Directive) makes it a de facto procurement standard for quality-conscious buyers.

Q: How is China's CCER restart affecting global carbon markets? A: The CCER restart in January 2024 introduced tightened methodologies and a restricted project type list (offshore wind, mangrove restoration, solar thermal power, forestry carbon sinks), signaling China's shift toward higher-integrity crediting. Annual CCER issuance is projected to reach 100 to 200 million credits by 2027, which would make the CCER system one of the largest offset programs globally. For international markets, the key question is whether CCERs will be authorized for transfer under Article 6.2, which would require bilateral agreements and corresponding adjustments. China has been cautious about authorizing international transfers, preferring domestic use to meet its own climate targets, which limits CCER supply to global voluntary markets.

Sources

• World Bank. (2025). State and Trends of Carbon Pricing 2025. Washington, DC: World Bank Group.
• European Commission. (2025). Carbon Border Adjustment Mechanism: Implementation Report and Transitional Phase Assessment. Brussels: DG CLIMA.
• California Air Resources Board. (2025). Cap-and-Trade Program: 2025 Offset Protocol Review and Compliance Period Update. Sacramento: CARB.
• Commodity Futures Trading Commission. (2024). Proposed Guidance on Listing Standards for Voluntary Carbon Credit Derivative Contracts. Washington, DC: CFTC.
• Integrity Council for the Voluntary Carbon Market. (2025). Core Carbon Principles Assessment Framework: First Results and Market Implications. London: ICVCM.
• Ministry of Ecology and Environment, People's Republic of China. (2025). China Certified Emission Reductions (CCER) Program: 2024 Annual Report and Methodology Updates. Beijing: MEE.
• International Emissions Trading Association. (2025). Article 6 Implementation Tracker: Status of National Frameworks and Bilateral Agreements. Geneva: IETA.