New Zealand was one of the first countries to mandate climate‑related financial disclosures, using a domestic regime built around the TCFD recommendations. Now the External Reporting Board (XRB) is preparing to align that regime with the International Sustainability Standards Board’s climate standard, IFRS S2.
In June 2026, the XRB published a draft climate reporting roadmap that proposes issuing a new standard, NZ IFRS S2 Climate‑related Disclosures, explicitly based on IFRS S2. The roadmap sets three design goals:
- keep the standard internationally aligned by adopting IFRS S2 as the foundation;
- ensure trans‑Tasman harmonisation by considering how to handle any differences between IFRS S2 and Australia’s AASB S2 climate rules; and
- maintain local relevance by making targeted modifications to fit New Zealand’s legislation, reporting practice and market context.
Under the proposal, NZ IFRS S2 would be available for early adoption from 1 October 2026, allowing climate‑reporting entities to transition on a voluntary basis. It would then become mandatory for periods beginning on or after 1 January 2033, replacing the current New Zealand climate standards. The XRB argues that this long runway balances the need for stability with the benefits of global alignment, giving preparers time to update systems, controls and governance.
The consultation highlights several expected benefits of adopting an IFRS S2‑based standard. First, it would give investors greater comparability between New Zealand entities and international peers also reporting under ISSB standards. Second, it should reduce duplication for cross‑listed groups that already report against IFRS S2 or similar requirements in other markets. Third, it would strengthen New Zealand’s credibility as a jurisdiction with investor‑grade climate disclosure, supporting access to sustainable finance.
For climate‑reporting entities, the proposed shift has practical implications. IFRS S2 has a strong emphasis on scenario analysis, climate resilience and transition planning, and will likely require more structured, decision‑useful metrics and targets than some existing TCFD‑aligned frameworks. It also expects clearer linkage between climate risks, financial statements and governance processes. Companies that treat the transition period as a “practice runway” for IFRS S2‑style disclosures will be better prepared when NZ IFRS S2 becomes mandatory.
The XRB’s consultation is open until 30 September 2026, and feedback can be submitted through written responses or dedicated forums. For sustainability, finance and risk teams, this consultation is an opportunity to influence details such as the interaction with existing legislation, assurance requirements and the treatment of smaller entities.
More broadly, New Zealand’s roadmap is another signal that ISSB climate standards are becoming a global baseline, even as jurisdictions like the EU maintain distinct frameworks such as ESRS. For multinational groups, aligning internal climate reporting with IFRS S2 concepts now will reduce friction as more countries move in this direction.
Source: New Zealand External Reporting Board draft climate reporting roadmap and IFRS S2 adoption proposal.