Mexico-ISSBStandards mandated by January 2025 amendments to the Circular Unica de Emisoras (CUE); first reporting in 2026 for FY2025

Local adoption of IFRS S1 / S2 (ISSB Standards)

Mexico · Comisión Nacional Bancaria y de Valores (CNBV)

Mexico's CNBV amended the Circular Unica de Emisoras in January 2025 to require non-financial securities issuers to disclose IFRS S1 and S2 information, with the first reports due in 2026 for fiscal year 2025; rules for financial institutions are being developed separately.

Category
ISSB-aligned sustainability disclosure
Enforcement
Mandatory
Effective date
CUE modifications took effect 29 January 2025; first sustainability-related disclosures due in 2026 for the 2025 fiscal year
Covered entities
Issuers of equity, debt and other securities supervised by CNBV, excluding listed financial institutions, states and municipalities. Non-financial entities currently in scope represented around 86% of the main equity index market capitalisation at the end of Q1 2025
Notes
Content extracted from IFRS Foundation jurisdictional profile (verified 2026-04-30).

Sources

Verified 2026-04-30

Related regulations

In force; product-specific NOMs continue to be issued

Mexico's LGPGIR makes manufacturers, importers and distributors of listed products draft and implement Waste Management Plans (Planes de Manejo) covering collection, return and recycling. SEMARNAT lists priority products in NOMs such as NOM-161, and several states (notably Mexico City) layer their own packaging and plastics rules on top.

Enforcement
Mandatory
Effective date
LGPGIR in force 6 January 2004; Reglamento in force 2007; NOM-161 published 1 February 2013
Covered entities
Producers, importers, distributors and traders of products on a national list of priority waste streams; large generators of hazardous and special-handling waste
Primary source ↗Verified 2026-04-30
Effective

Australia has issued ISSB-aligned sustainability standards. AASB S2 (climate) is mandatory under the Corporations Act for in-scope entities; AASB S1 (broader sustainability) is voluntary.

Enforcement
AASB S1: voluntary. AASB S2: mandatory under Corporations Act 2001 for in-scope entities.
Effective date
Annual reporting periods beginning on or after 1 January 2025 (phased by entity size)
Covered entities
Group 1, 2, 3 entities under AASB thresholds (large entities first; phased rollout to mid-size and smaller large entities)
UK-SRS

UK Sustainability Reporting Standards (UK SRS S1 and UK SRS S2)

United Kingdom · UK Government (DBT) / FRC; FCA for listed-entity application
Final standards published (voluntary); FCA consulting on mandatory listing-rule application

The UK government has endorsed IFRS S1 and S2 as UK SRS S1 and S2 for voluntary use. The FCA is consulting on listing rules that would make UK SRS S2 mandatory for listed issuers, with Scope 3 and non-climate sustainability on a comply-or-explain basis.

Enforcement
Voluntary at publication. FCA proposes mandatory UK SRS S2 for listed issuers (Scope 3 and broader sustainability on comply-or-explain).
Effective date
TBD pending FCA listing-rule outcome
Covered entities
Any UK entity (voluntary). FCA proposal targets in-scope listed issuers.
Canada-CSDS

CSDS 1 and CSDS 2 – Canadian Sustainability Disclosure Standards

Canada · Canadian Sustainability Standards Board (CSSB), under FRAS Canada
Final standards published (voluntary); CSA mandatory rule paused April 2025

CSSB issued final CSDS 1 and CSDS 2 on 18 December 2024, aligned with IFRS S1 and S2 with extra transition reliefs. Standards are voluntary. The CSA paused its mandatory climate disclosure rulemaking on 23 April 2025.

Enforcement
Voluntary
Effective date
Annual reporting periods beginning on or after 1 January 2025 (with transition reliefs)
Covered entities
Any Canadian entity (voluntary). CSA paused work on mandatory rule citing global developments.
Japan-SSBJ

SSBJ Sustainability Disclosure Standards (Application, General, Climate)

Japan · Sustainability Standards Board of Japan (SSBJ)
Final standards published 5 March 2025 (voluntary now; mandatory phased)

SSBJ published final sustainability disclosure standards on 5 March 2025: an Application Standard, a General Standard, and a Climate Standard. The standards are essentially equivalent to IFRS S1 and S2. Mandatory application phases in by market capitalization.

Enforcement
Voluntary now. Mandatory under FSA disclosure framework on phased basis by market cap.
Effective date
Voluntary for periods ending on or after 5 March 2025. Mandatory phased: FY ending March 2027 for issuers with market cap >¥3T, expanding through FY ending March 2029.
Covered entities
Listed issuers in Prime Market (phased by market cap)
HongKong-HKFRS

HKFRS S1 and HKFRS S2 – Hong Kong Sustainability Disclosure Standards

Hong Kong · Hong Kong Institute of Certified Public Accountants (HKICPA)
Adopted (effective 1 August 2025; voluntary use until mandated by relevant authority)

HKICPA published HKFRS S1 and HKFRS S2 on 12 December 2024, fully aligned with IFRS S1 and S2. The Hong Kong SAR Government's December 2024 Roadmap sets out the phased path to mandatory adoption for publicly accountable entities.

Enforcement
Voluntary at HKICPA level. The Hong Kong SAR Government's roadmap (10 December 2024) sets out phased mandatory adoption for publicly accountable entities.
Effective date
Annual reporting periods beginning on or after 1 August 2025
Covered entities
Any Hong Kong entity (voluntary). Mandatory phased rollout per government roadmap.