The Australian Sustainability Reporting Standards have moved climate-related disclosure from a voluntary, sustainability-team exercise to a mandatory financial reporting obligation. The first cycle for Group 1 entities ran in financial years beginning on or after 1 January 2025. Group 2 follows in FY26. Group 3 in FY27. The architecture is in.
What sits beneath it is a director-duty problem the architecture itself does not resolve.
Climate-related disclosures, under ASRS S2, require a board-level engagement with material that is technical, forward-looking, and inherently uncertain. Greenhouse gas emissions across scope categories. Climate scenario analysis under multiple temperature pathways. Transition planning architecture. Physical and transition risk assessments. The disclosures sit in the financial report and are subject to director sign-off. The statutory framework provides a transitional safe harbour for certain disclosures. The director duty under s180 – to exercise care and diligence – is not within the safe harbour and was never going to be.
The strategic question is therefore not whether to comply with ASRS S2. That question is settled. The question is what reasonable inquiry by a director looks like for a disclosure of this kind, and whether the contemporary board-management interaction architecture is fit for the purpose.
In most boards we observe, it is not.
The dominant pattern is over-reliance. The sustainability function – sometimes a function of finance, sometimes a function of risk, sometimes a function of legal – produces the climate disclosures. Management certifies them. The board reviews a summary. The audit committee, where it has been asked to look at climate as part of its remit, takes management's view on the technical content. Sign-off occurs. The disclosure goes out. If asked, in court, what reasonable inquiry the board performed on the assumptions underlying the scenario analysis or the methodologies behind the emissions calculation, the board has, in many cases, limited material to draw on.
This is not a criticism of management. The technical complexity is real. Boards cannot, and should not, attempt to reproduce management's analytical work. The architecture of director inquiry has never required that. It has required that directors make proper inquiry – that they ask the questions a careful and diligent person would ask, that they probe the answers, and that they not approve material on the basis of trust alone where the circumstances call for examination.
What does proper inquiry on climate disclosures look like? Three observations.
First, the assumption inquiry. Climate scenario analysis turns on assumptions – about temperature pathways, about transition policy, about physical-risk impact functions, about technology trajectory. The assumptions are made by a small number of people, often in management, often with reference to external models or guidance. The board's question is not whether the assumptions are correct. It is whether the assumptions have been interrogated – whether the entity has tested its analysis against alternative assumption sets, whether it understands its sensitivity to those assumptions, and whether the disclosure language matches what the assumption-driven analysis actually supports. A board paper that records the assumption set, the alternatives considered, the rationale for the chosen set, and the sensitivity envelope is a paper that demonstrates inquiry. A paper that records only the analytical output is a paper that demonstrates reliance.
Second, the governance interface. Climate disclosure governance is, in most entities, a function that has accumulated rather than been designed. The work sits across sustainability, finance, legal, risk, and operations. Reporting lines into the board are layered. The audit committee has a piece. The risk committee may have a piece. A sustainability committee may have a piece. The board itself has the residual responsibility but, often, no clear interface for the consolidated material. The result is that no single committee has the unified view required to perform the inquiry that the disclosure invites. The fix is structural: a clear governance interface, an explicit committee mandate, a defined cadence, and an information flow that puts the consolidated material in front of directors who have time to engage with it. The structural choice is itself a documentary artefact.
Third, the disclosure decision record. The disclosure goes out. The contemporaneous record of how the disclosure was constructed, what views were canvassed, where management and board diverged, and how the final language was settled is the record on which a future contested case will turn. Climate-related litigation in this jurisdiction is at an early stage relative to comparable jurisdictions, but the trajectory is established. Disclosure-based claims, modelled on misleading-conduct architecture and on director-duty architecture, will land. The entities that have constructed the contemporaneous record carefully will be in a meaningfully different position from those that have not.
The auditor sits in this picture too. Audit and assurance over climate-related disclosures is itself migrating – in scope, in standard, in the sophistication of testing applied. The audit committee's interaction with the auditor on climate matters is therefore on the same architectural arc as the audit committee's interaction on traditional financial-report matters. The committee that probes the auditor on climate methodologies, that records the probing, and that documents the auditor's responses is performing inquiry at the gatekeeper interface. The committee that does not is, in effect, treating the climate work as a sustainability output rather than a financial-report output.
The strategic implication is one of timing. Group 1 entities are now in their second mandatory cycle. Group 2 entities are in their first. Group 3 entities are looking at their first under draft conditions. The window between now and the first contested cycle – the first piece of climate-disclosure litigation that turns on the quality of the directorial inquiry record – is somewhere in the next twelve to thirty-six months. That window is the architecture-design window. Boards that use it to design the inquiry architecture they will need will carry a record that demonstrates inquiry. Boards that do not will carry the same records that the over-reliance failure mode produces – and those records, when they are tested, will not hold.
The boards that have done this best have done three things. They have moved climate from a sustainability-function output to a board-information design problem. They have collapsed fragmented committee responsibilities into a clear interface. And they have asked their internal counsel and their auditor, ahead of the cycle, to identify the questions a contested inquiry would put to the documentary record – and built the record to answer them.
This is general analysis. It is not advice on any specific matter. Readers should not act on it without engaging appropriate counsel.
