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Sustainability Reporting Guide: Key insights on CSRD, IFRS, and California

August 6, 2026

Sustainability reporting has its roots in voluntary reporting on climate and other environmental issues. Because this reporting has generally been prepared based on different standards and what an individual entity thought was most relevant to its investors and other stakeholders, the sustainability matters disclosed — and what was disclosed about them — varied considerably among entities.

In the past few years, though, the sustainability reporting landscape has changed drastically, with mandatory reporting beginning to supplant voluntary reporting worldwide. Further, one of the most notable aspects of the new reporting requirements is their ‘extraterritoriality’ — that is, their effect on entities outside of their direct jurisdictions.

PwC’s Sustainability Reporting Guide helps companies navigate this landscape and serves as a compendium of the reporting requirements under the sustainability frameworks expected to have the broadest impact globally, including:

  • European Sustainability Reporting Standards (ESRS) adopted by the European Commission (EC) for purposes of compliance with the Corporate Sustainability Reporting Directive (CSRD) in the European Union (EU)
  • IFRS® Sustainability Disclosure Standards issued by the International Sustainability Standards Board (ISSB)
  • California has also issued several laws that will require sustainability disclosures from a broad range of public and private companies, including US subsidiaries of non-US entities.

Download the guide for our latest insights, perspectives, and guidance.

Read the guide

Sustainability watch

Here are the topics we have our eyes on. More coming soon!

  • Challenges of building new nuclear energy generation
  • Water scarcity
  • SBTi and reverifying sustainability targets
  • Large energy user survey
  • Pricing climate risk
  • Agentic commerce

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