AASB S2 Mandatory Climate Reporting Support for Group 2 Entities
Fixed-fee. On-site when needed. No big-four billing rates.
Group 2 applies to financial years beginning on or after 1 July 2026. Lodgement timing depends on entity type and balance date. Aethiro delivers structured support alongside your existing legal and financial advisers.
What Is AASB S2 and Why Does It Matter Now?
AASB S2 is Australia's mandatory climate reporting standard, administered by ASIC. It is not a voluntary ESG report. It sits inside your annual financial report and carries the same weight as any other mandatory financial reporting obligation. The board is directly accountable for the governance framework it describes. Non-compliance is a financial reporting failure, not an administrative oversight.
The standard covers four mandatory pillars: governance, strategy, risk management, and metrics and targets. Each requires documented evidence, verifiable data, and structures that take months to build. Even if your own mandatory date is July 2027, your clients and supply chain partners are already asking for your climate data to meet their own obligations. That pressure is already here.
Is this right for your business?
If your board, auditors, or CFO have raised AASB S2 in the last twelve months, you are not alone. Subject to Chapter 2M annual financial reporting requirements, Group 2 applies to financial years commencing on or after 1 July 2026. Group 3 applies to financial years commencing on or after 1 July 2027.
This service is for companies that are directly caught by mandatory reporting, or are preparing ahead of their obligation date. That includes mid-market Queensland businesses in resources services, construction, logistics, food processing, and agribusiness groups operating at scale.
It also catches businesses that may not realise they are in scope. If the entity must prepare an annual financial report under Chapter 2M and the corporation is required to report under the NGER Act, it is generally in Group 2 unless already in Group 1. This pathway does not depend on meeting the Group 2 revenue, assets or employee tests. Energy-intensive operations should confirm their Chapter 2M and NGER status with their legal and accounting advisers.
Group 1 entities already in their first reporting year may need Scope 3 data architecture, supplier engagement programs, or assurance readiness support. We can help with that too.
Group 2 Year 1 loading. Governance and risk frameworks can mature over the reporting period, but Scope 1 and 2 records should be secured from 1 July onward. Missing data should be identified and documented now to reduce estimation and assurance risk. Priority engagement is available for entities closing early gaps.
Group 3 Mandatory from 1 July 2027. That twelve-month window is the only advantage left in this process. Every month you spend building governance structures and data systems now is a month of verified, defensible data you will have when your deadline arrives. Waiting costs more than starting.
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How it works
A structured, three-phase engagement covering all mandatory climate reporting requirements under AASB S2 and the Australian Sustainability Reporting Standards (ASRS). Fixed-fee after a free scoping discovery session. No hourly billing. No surprises.
- Phase 1: Governance and Materiality Foundation. Reporting eligibility confirmation and entity structure mapping. Board and senior stakeholder engagement. Climate governance framework design, risk committee structure, and accountability framework. Materiality assessment across all four AASB S2 pillars. Supply chain and operational risk identification.
- Phase 2: Data Discovery and Climate Risk Assessment. Scope 1 and 2 emissions baseline measurement. Data system architecture built into your existing finance and operational processes. Climate scenario analysis covering physical and transition risks. Scope 3 materiality assessment and supply chain engagement program.
- Phase 3: Disclosure Preparation and Reporting. Draft AASB S2 and Australian Sustainability Reporting Standards (ASRS) aligned climate disclosure, structured for your annual financial report and assurance review. Assurance-readiness review. Handover documentation for ongoing annual reporting cycles.
Why Aethiro for AASB S2
Big-four firms have the brand. Aethiro has the technical depth, the regional presence, and the price point that works for mid-market entities.
On-Site When You Need It
Accurate data can require seeing your operations, not just your spreadsheets. We travel to sites across regional Australia for data validation, evidence review and stakeholder engagement.
Fixed-Fee After Scoping
Full cost agreed before work begins. No hourly billing. No scope creep. A clear proposal with deliverables and timeline after a free discovery session.
Works Alongside Your Advisors
We handle the carbon and climate technical work. Your lawyer, auditor, and CFO keep doing their jobs. No legal overlap. No financial advisory conflict.
Regional Industry Specialist
AASB S2 looks different in a Bowen Basin mine, a Pilbara operation, or an agribusiness group than in a city office. We understand your sector and operating context.
Fast Mobilisation
Large consulting firms have multi-week onboarding. We can begin the scoping session within days of your enquiry and start substantive work within two weeks of engagement.
Significantly Below Big-Four Rates
Same technical rigour, without the overhead. AASB S2 compliance should not cost as much as the system it describes. Structured for mid-market budgets.
What changes when you engage now
Year 1 is underway, but the board still has no documented governance framework, risk committee, or clear accountability structure
A documented climate governance structure with a board-ready accountability framework and risk committee terms of reference, established during Year 1 and ready for first disclosure.
Banks, insurers, and major clients keep asking for ESG data you don't have
Structured climate and emissions data you can use to respond to any ESG questionnaire, loan covenant, or client request.
Group 2 Year 1 is underway, but governance, data systems, and measurement processes still have gaps
A structured recovery engagement that secures available records from 1 July 2026, documents any gaps, and builds reporting infrastructure for the remainder of Year 1 and your first disclosure in October 2027.
Frequently Asked Questions
You might also need
Other services that complement this one, often needed at the same time.
Further reading
Related insights
Group 2 Year 1 is underway. Close the data gaps now.
Book a 30-minute scoping call. We will confirm your reporting group, assess what has been captured since 1 July 2026, identify the most urgent gaps, and map your path to first disclosure in October 2027. Priority scheduling is available for entities contacting us now. No obligation.
Important: information only, not advice
This page provides general information about AASB S2 mandatory climate reporting and operational steps to prepare. It is not legal, financial, accounting, audit, or investment advice. AASB S2 obligations depend on your entity's structure, size, and corporate group. Always confirm your reporting obligations and disclosure approach with your legal advisor, auditor, and accountant. Aethiro Pty Ltd does not provide legal, financial, or assurance services and is not a registered tax or financial adviser.