AASB S2: what Group 2 entities need to learn from the first reports
By Geoff Gourley · 8/21/2026
Executive summary. AASB S2 is not a sustainability writing exercise. It is a statutory, assurance-facing financial reporting process that needs board and CFO ownership, controlled data, defensible judgement, and visible connectivity to strategy, risk and the financial statements.
By 6 May 2026, ASIC had received 259 sustainability reports for years ending 31 December 2025 — 34 listed and 225 unlisted. Standardisation improved quality and comparability, but ASIC also flagged recurring deficiencies that Group 2 can design out now rather than discover during assurance or director sign-off. Big Four reviews agree: the strongest first reports were entity-specific, concise, transparent about uncertainty and connected to financial decision-making. The weakest leaned on generic risk lists, vague scenario narratives and defensive disclaimers.
Five messages for Group 2
- The clock has started. For a 30 June year-end, the first mandatory period ordinarily began 1 July 2026.
- Phased assurance is not phased obligation. A narrower year-one assured subset does not make the rest of AASB S2 optional.
- Scope 3 relief is temporary. Value-chain mapping and methodology work should proceed in year one.
- The directors' declaration changes the risk profile. Boards need evidence of process, not a polished draft.
- Copying a first-wave report is unsafe. Presentation can be benchmarked; materiality, assumptions, scenarios, data and financial effects cannot.
Who is in Group 2
Entities with Chapter 2M reporting obligations that meet two of three thresholds — revenue ≥$200m, gross assets ≥$500m, or ≥250 employees — for financial years commencing 1 July 2026 to 30 June 2027. Other entry routes include NGER reporters and registered schemes, RSEs and retail CCIVs with ≥$5bn assets. The test is applied at year-end, so entities near a threshold should monitor acquisitions, disposals and workforce movements.
What good looks like
- Treat the sustainability report as part of the statutory suite, with financial-report-level controls.
- Engage the financial statement auditor early and agree year-one evidence expectations.
- Document materiality, scenarios, time horizons, assumptions and uncertainty.
- Reconcile climate assumptions with budgets, forecasts and financial statement judgements.
- Keep voluntary disclosure clearly distinguishable and subordinate to mandatory content.
Recommended next step
Commission a focused readiness and mobilisation phase now: confirm reporting scope, establish governance, agree the assurance pathway, identify material climate-related risks and opportunities, design the data and evidence model, and integrate the reporting timetable with financial close and board approval.
Download the full briefing paper
The full paper includes the ASIC observation table, KPMG, Deloitte, PwC and EY review findings, worked lessons from published reports, a 90-day mobilisation plan, readiness measures, a regulatory watchlist and a board-level readiness checklist.
If you would like ESG&I to walk your board or audit and risk committee through the implications, get in touch.