Getting assurance-ready: Build confidence in your carbon claims

Carbon Claims Under Scrutiny

Regulators worldwide are cracking down on corporate carbon claims amid escalating climate risks. In California, laws like SB 253 require companies with over $1 billion in revenue to disclose Scope 1 and 2 emissions by August 2026, following 2025 updates that delayed but confirmed these mandates despite ongoing lawsuits. The EU's Empowering Consumers for the Green Transition Directive, effective September 2026, prohibits generic environmental boasts and offset-based neutrality labels without rigorous proof. This follows the 2025 pause of the Green Claims Directive, yet national enforcers like Germany's courts are already striking down misleading ads.

The push stems from 2024-2025 revelations of overstated offsets and inconsistent reporting, which eroded market confidence. Global carbon prices surged to $350 per tonne projections by 2040, amplifying costs for non-compliant firms. In the UK, the Competition and Markets Authority's enhanced powers under the 2025 Digital Markets Act allow direct fines up to 10% of turnover for deceptive sustainability marketing.

Impacted are multinationals in manufacturing, fashion, and energy, where unassured claims ripple through supply chains. Apparel firms alone face 34% profit erosion by 2030 from inaction, per recent analyses, as raw material and energy expenses climb. Smaller enterprises, though often exempt from thresholds like €450 million turnover under EU rules, feel indirect pressure from buyer demands for verified data.

Deadlines loom: California's initial reports due despite injunctions on SB 261, with assurance escalating to reasonable levels by 2030. Costs include third-party verification fees averaging $100,000 annually for large entities, plus potential $50,000 fines per violation in France's similar regimes. Inaction risks not just penalties but stranded assets—up to $610 billion in fixed losses globally by 2035 from climate hazards—and reputational hits from investor resolutions managing $1.5 trillion.

Less visible tensions include the offset conundrum: while convenient, their non-permanence and over-crediting—evident in 87% of corporate uses—fuel greenwashing suits, as seen in 2025 cases against major airlines. Trade-offs pit short-term marketing gains against long-term decarbonization, where Scope 3 exclusions hide 21 times more emissions than direct operations. Stakeholder divides emerge, with investors pushing alignment to Paris goals while executives grapple with verification burdens amid economic volatility.

Surprising data reveals high-ambition targets often mask weak planning, with 96% of net-zero pledges showing red flags like missing interims. Counterarguments from industry highlight regulatory fragmentation—US state laws versus EU harmonization—creating compliance mazes, yet unified standards like ISSA 5000 offer paths to credibility.