ISSB Update 2025

Since the launch of the IFRS International Sustainability Standards Board (ISSB) in 2023, several countries around the world have pledged to adopt the new standards. To date, 36 jurisdictions have now either adopted or are actively incorporating the ISSB standards into their regulatory frameworks.

Australia, Brazil, Nigeria, Mexico, Türkiye, Canada, Japan, and the UK are among those actively aligning or adopting.

17 jurisdictions have now finalised their approach, of which 14 aim to fully adopt ISSB Standards, 2 plan to adopt only the climate-related requirements (IFRS S2), and 1 intends to partially incorporate the standards. These 17 jurisdictions represent 57% of global GDP, 40% of market capitalisation, and over 50% of global greenhouse gas emissions (GHGs).

Profiles of the approach taken in each jurisdiction are available via the IFRS website.

A further 16 jurisdictions are in the process of aligning with ISSB, but are yet to finalise their approach.

In mid-2025, IFRS published guidance on how jurisdictions should disclose information about transition plans as well as educational materials on GHG emissions disclosure under IFRS S2.

IFRS have also created a free e-learning course to help users learn how to navigate and implement the Standards.

The map shows which jurisdictions have so far adopted or plan to adopt the ISSB standards.

UK approach

In June 2025. the UK government published exposure drafts for UK SRS S1 and S2 with a consultation open until September and final standards expected in late 2025. Reporting with then begin from January 2026. The UK SRS will initially be optional, with the potential for future mandatory adoption under the Companies Act 2006. The UK is also consulting on enhanced assurance requirements and oversight of sustainability assurance providers.

For more information about implementing ISSB, please get in touch.