ESG Reporting · Regulatory timeline
Australian ESG obligations run on separate legal tests, portals and clocks. Select a layer to see its target dates and the standard or regulation behind each one.
Corporations Act 2001 (Cth) Chapter 2M and s 292A · AASB S2 Climate-related Disclosures · ASIC RG 280
Entities required to lodge a Chapter 2M financial report enter the sustainability-report regime by cohort — two of three size thresholds, the NGER-reporter pathway, or the asset-owner test. AASB S1 remains voluntary.
| Date | What happens | Standard / regulation | Status |
|---|---|---|---|
| Financial years beginning on or after 1 January 2025 | Group 1 commences (revenue ≥ A$500m · gross assets ≥ A$1bn · employees ≥ 500, meet two of three; or NGER controlling corporation meeting the corporate-group threshold) | Corporations Act s 292A; AASB S2; ASIC RG 280 Table 2 | M |
| Financial years beginning on or after 1 July 2026 | Group 2 commences (revenue ≥ A$200m · gross assets ≥ A$500m · employees ≥ 250; other NGER controlling corporations; registered schemes, RSEs and retail CCIVs with assets ≥ A$5bn) | Corporations Act s 292A; AASB S2; ASIC RG 280 Table 2 | M |
| Financial years beginning on or after 1 July 2027 | Group 3 commences (revenue ≥ A$50m · gross assets ≥ A$25m · employees ≥ 100); statutory conditions apply to the no-material-climate-risk statement route | Corporations Act s 292A; AASB S2; ASIC RG 280 Table 2 | M |
| First reporting year of each cohort | Relief from Scope 3 emissions disclosure and from comparative information; Scope 3 becomes a required disclosure from the second year | AASB S2 Appendix C (transition provisions) | M |
| 3 months after year end (disclosing entities, registered schemes, RSEs) · 4 months (other entities) | Lodgement of the sustainability report with the auditor's report | Corporations Act s 319; ASIC lodgement guidance | M |
| Periods beginning on or after 1 January 2027 | The September 2024 AASB S2 compilation ceases to apply; the later compilation (including S2025-1 greenhouse-gas amendments) governs | AASB S2 compilation history; AASB S2025-1 | T |
| Mid-2026 consultation | Treasury consulted on possible changes to reporting thresholds and assurance phasing — a proposal, not an amendment; published settings continue to apply | Treasury consultation (unenacted) | T |
NGER Act 2007 · Safeguard Mechanism · Modern Slavery Act 2018 (Cth) · Workplace Gender Equality Act 2012
Each filing runs on its own legal test, portal, deadline and signatory. Lodging a sustainability report discharges none of them.
| Date | What happens | Standard / regulation | Status |
|---|---|---|---|
| 31 October each year | NGER emissions and energy report for the preceding financial year (facility ≥ 25,000 t CO2-e or 100 TJ; corporate group ≥ 50,000 t CO2-e or 200 TJ) | National Greenhouse and Energy Reporting Act 2007; NGER Regulations 2008; NGER (Measurement) Determination 2008 (updated annually); Clean Energy Regulator | M |
| Annually to 30 June 2030 | Safeguard Mechanism baseline decline of 4.9% per year for covered facilities (generally > 100,000 t CO2-e direct emissions), subject to scheme exceptions | NGER Act 2007 Part 3H; Safeguard Mechanism Rule; Clean Energy Regulator | M |
| Within 6 months of financial year end (31 December for June year-ends) | Modern Slavery statement for entities with consolidated revenue ≥ A$100m, approved by the governing body and signed by a responsible member | Modern Slavery Act 2018 (Cth) ss 5, 13–16; Attorney-General's Department | M |
| 1 April – 31 May each year | WGEA report against the six Gender Equality Indicators for relevant employers with 100 or more employees; additional strategy and target requirements at 500 or more | Workplace Gender Equality Act 2012; Workplace Gender Equality Agency | M |
| Continuous | APRA-regulated institutions: climate-risk governance expectations supporting the enforceable prudential standards — not a standalone public reporting mandate | APRA CPG 229 | G |
GRI · SASB / ISSB (IFRS S1, S2) · TNFD · PCAF · CDP · EU CSRD, ESRS and CBAM · UK SRS · US SEC and California · NZ, SGX and HKEX regimes
Screening overlays for groups with overseas entities, listings, exports or value-chain commitments. Dates below are stated as published; most changed during 2026 and are flagged T until re-verified for the reporting period.
| Date | What happens | Standard / regulation | Status |
|---|---|---|---|
| Reporting from 1 January 2026 | GRI 101 Biodiversity 2024 effective, replacing GRI 304 | GRI Topic Standards | V |
| Reporting from 1 January 2027 | GRI 102 Climate Change 2025 and GRI 103 Energy 2025 effective, replacing specified GRI 305 and GRI 302 disclosures | GRI Topic Standards | V |
| Reporting from 1 January 2023 | GRI Universal Standards 2021 (GRI 1, 2, 3) in effect | GRI Universal Standards | V |
| 1 January 2026 | EU CBAM definitive regime: authorisation, embedded-emissions data and certificates for covered imports; Australian exporters may be asked for installation-level data | EU Regulation 2023/956 (CBAM) | M |
| 24 February 2026 · 3 July 2026 | EU CSRD scope narrowed (> 1,000 employees and > €450m turnover; separate third-country tests); revised ESRS adopted by the Commission | EU CSRD; ESRS (revised) | T |
| 25 February 2026 | UK SRS S1 and S2 issued; legal application to be assessed separately | UK Sustainability Reporting Standards | T |
| Financial years beginning on or after 6 April 2022 | UK mandatory climate-related financial disclosures for covered companies and LLPs | Companies (Strategic Report) (Climate-related Financial Disclosure) Regulations 2022 | M |
| 29 May 2026 | US SEC proposed rescission of its climate-disclosure rules (stayed since April 2024) | SEC rulemaking | T |
| 10 August 2026 | California SB 253 first-year greenhouse-gas reporting deadline; SB 261 enforcement of the 1 January 2026 deadline suspended under a court order | California SB 253 and SB 261; CARB regulations | T |
| Years commencing on or after 1 January 2026 | HKEX climate disclosures mandatory for applicable LargeCap issuers | HKEX Listing Rules | M |
| Financial years commencing 2026 | SGX Scope 3 reporting for specified STI constituent issuers; other cohorts phase in | SGX Listing Rules 711A/711B; Practice Note 7.6 | CE |
| Periods ending on or after 27 October 2024 | New Zealand greenhouse-gas assurance for climate reporting entities | NZ CS 1 paras 25–26; NZ SAE 1 | M |
| Continuous | Supplier questionnaires, lender covenants and customer contracts create commercial reporting commitments without making a supplier a statutory reporting entity | Contractual terms; SASB, TNFD, PCAF and CDP as selected | V |
ASSA 5000 General Requirements for Sustainability Assurance Engagements · ASSA 5010 Timeline for Audits and Reviews · Corporations Act 2001
ASSA 5000 says how assurance is performed; ASSA 5010 says what must be assured, at what level and when, by cohort. The statutory financial-report auditor provides it.
| Date | What happens | Standard / regulation | Status |
|---|---|---|---|
| Group 1: FYs commencing 1 Jan 2025 – 30 Jun 2026 · Group 2: 1 Jul 2026 – 30 Jun 2027 · Group 3: 1 Jul 2027 – 30 Jun 2028 | Stage 1 — limited assurance over governance, specified risk and opportunity disclosures, Scope 1 and 2 emissions and any no-material-risk statement | ASSA 5010 para 10(a) | M |
| Group 1: FYs commencing 1 Jul 2026 – 30 Jun 2028 · Group 2: 1 Jul 2027 – 30 Jun 2029 · Group 3: 1 Jul 2028 – 30 Jun 2030 | Stages 2 and 3 — limited assurance over all disclosures in the sustainability report, including scenario analysis, transition plans, risk management, Scope 3 and targets | ASSA 5010 para 10(b) | M |
| Group 1: FYs commencing from 1 Jul 2028 · Group 2: from 1 Jul 2029 · Group 3: from 1 Jul 2030 | Stage 4 — reasonable assurance (audit) over the sustainability report | ASSA 5010; Corporations Act requires audit for financial years commencing on or after 1 July 2030 | M |
| Periods beginning from 1 January 2025 (Chapter 2M information) · other engagements from 31 December 2025 | ASSA 5000 operative dates, as amended July 2025; information reported to the Clean Energy Regulator is assured under ASAE 3000 instead | ASSA 5000 (amended July 2025); AUASB implementation guidance | M |
| Periods beginning on or after 15 December 2026 | ISSA 5000 international effective date (early application permitted); Australian timing follows ASSA 5000, not ISSA 5000 | IAASB ISSA 5000 | V |
| Mid-2026 consultation | Treasury consulted on possible changes to assurance phasing — ASSA 5010 as published remains the standard until amended | Treasury consultation (unenacted) | T |
Rule-set v1.0.0 · checked against Research handovers and RMAT-ESG-IM-000 dated 11 October 2026
Boundary. This timeline is general information, not legal advice and not an applicability determination for any entity. RMAT does not provide statutory assurance; for a Chapter 2M sustainability report the statutory auditor does.
Caution. Treasury consulted in mid-2026 on possible changes to reporting thresholds and assurance phasing. Published settings apply until amended; items marked T are re-verified before use.
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