Under AASB S2, climate-related disclosures carry the same legal weight as the financial statements, and directors are accountable for them. That makes choosing who prepares this work a governance decision, not a procurement exercise. The right adviser should be judged on accountability, independence, assurance-readiness, financial rigour, integration with capital strategy, and focus — not on brand recognition or breadth of services.
Why this is now a governance decision
For years, sustainability reporting was discretionary, and the choice of adviser was low-stakes. That has changed. AASB S2 — Australia's mandatory climate disclosure standard, embedded in the Corporations Act 2001 — gives climate disclosures the legal standing of financial reporting. Directors are personally accountable. The work is subject to assurance, beginning with limited assurance over Scope 1 and 2 emissions and escalating toward reasonable assurance by 2030. And investors, lenders and regulators are reading these disclosures closely.
When the output carries this much legal and commercial weight, the decision of who prepares it belongs in the same category as choosing an auditor or a transaction adviser. It is a decision the board should make deliberately, against clear criteria.
The shift: from "biggest brand" to "who actually delivers — and stands behind it"
The instinct to default to the largest, most familiar name is understandable, but it answers the wrong question. A brand does not prepare your disclosure; a team does. The questions that matter are who will actually do the work, whether they have the technical depth to do it well, whether their advice is genuinely independent, and whether they will stand behind it when it is examined.
The criteria below reframe the choice around delivery and accountability rather than logo and scale.
What to look for: six criteria
Personal accountability
Ask who will actually perform the work and who is personally accountable for it by name. The strongest model is one where the senior people who win the engagement also lead the delivery and put their names to the result — not one where experienced partners sell the work and the delivery is handed down. Climate disclosure is too consequential for diffuse accountability.
Independence
Consider whether the adviser has a structural conflict. An adviser who also provides your audit or assurance, or who has a commercial incentive to expand into adjacent services, is not in the same independent position as one whose only interest is the quality of the advice. Independence is strongest when it is built into the adviser's structure, not merely asserted in a policy.
Assurance-readiness
Your climate disclosures will be examined — by an assurance provider, potentially by ASIC, and by investors. The work must be assurance-ready: supported by documented methodologies, internal controls, data traceability and an audit trail, so it withstands independent verification. A persuasive narrative that cannot be evidenced is a liability, not an asset.
Financial rigour
The best sustainability reporting is prepared with the discipline of financial reporting. Look for an adviser who treats materiality, consistency, completeness and accuracy as the controls they are, and who understands that AASB S2 is a financial-reporting standard, not a communications exercise. A finance foundation is what makes the work defensible.
Integration with strategy and capital
AASB S2 does not stop at disclosure. Metrics and targets must connect to a transition plan and to the capital required to deliver it; investors price climate risk into cost of capital. An adviser who understands this connection — who can link your disclosure to your strategy, valuation and funding — delivers far more than one who treats reporting as an end in itself.
Focus
Consider whether this is a specialism for the adviser or one of dozens of services they cross-sell. A focused specialist who does this work repeatedly, and only takes on what they do best, will generally bring greater depth and fewer competing priorities than a generalist for whom climate reporting is a small line in a broad catalogue.
The seven questions to put to any adviser
These questions are independent of any particular firm. Use them to pressure-test anyone — including your incumbent:
- 1.
Who will actually do the work, and who is personally accountable for it, by name?
- 2.
Does this adviser have a structural conflict — do they also audit us, or sell services they would benefit from expanding?
- 3.
Will the work survive assurance and ASIC examination — is it assurance-ready, or is it a narrative?
- 4.
Does this adviser treat the engagement as financial reporting, or as a sustainability exercise?
- 5.
Does the work connect our targets to a funded transition plan and to capital — or stop at disclosure?
- 6.
Is this adviser focused on AASB S2 and ESG-in-finance, or is it one of many services they cross-sell?
- 7.
When something breaks late before the deadline, whose phone rings — and do they answer?
Every confident, specific answer is a good sign. Hesitation on accountability, independence or assurance-readiness is worth probing.
How Lever Impact is built to answer these
We designed Lever Impact around exactly these criteria. The senior people who win the work lead it and stand behind it personally. We do not provide audit or assurance, so our advice carries no structural conflict — and we build every deliverable to be assurance-ready, to the standard of financial reporting, because we are chartered accountants. We treat AASB S2 as a financial and capital matter, connecting disclosure to transition planning and funding. And we are deliberately focused: we take on the work we do best, and we make every engagement about the client's outcome.
If your board is choosing — or reconsidering — how its climate and sustainability reporting gets done, we would welcome the conversation.
Frequently asked questions
Sustainability Reporting • June 2026