WTW’s latest Climate Reporting Comparative Table shows a clear trend towards harmonised reporting across major global frameworks, with companies facing strong demands to quantify the financial impacts of climate risks and opportunities across their operations and supply chains.

The update highlights efforts to reduce data points and align requirements, particularly between the EU’s Corporate Sustainability Reporting Directive omnibus amendments and the International Sustainability Standards Board standards.

The global advisory, broking and solutions firm says the table helps organisations align internal reporting with evolving global standards, manage climate-related risks and opportunities, and prepare for compliance demands.

Muhammed Anwar, director of strategic climate disclosure at WTW, commented: “While there may be headwinds in some territories, continuing development and adoption of mandatory and voluntary climate disclosure frameworks continues apace worldwide, as evidenced by a range of key global developments. Notably, these requirements increasingly mandate the financial quantification of climate risks.”

Key frameworks covered include the EU’s Corporate Sustainability Reporting Directive alongside the EU Taxonomy, the International Sustainability Standards Board’s IFRS S1 and S2 standards, the Financial Stability Board’s TCFD, and US federal and state regulations.

Recent EU legislative changes include the CSRD omnibus package, adopted in February 2025 and aimed at easing reporting burdens while maintaining transparency. Meanwhile, the IFRS standards are set to replace the Financial Stability Board’s task force framework, with countries including the UK, Australia, Canada, Singapore and Nigeria integrating them into national rules.

Voluntary frameworks also remain influential, according to WTW. The Carbon Disclosure Project and the Science Based Targets initiative continue to shape investor expectations and provide benchmarks for environmental, social and governance ratings. California is advancing three new laws mandating climate disclosures, currently aligned with the Financial Stability Board framework but with flexibility to incorporate IFRS standards in the future.

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