Physical climate risk data,
ready for AASB S2.
Most of AASB S2 reads like TCFD. Two demands don't. AASB S2 makes climate disclosure mandatory under the Corporations Act 2001. Most of it reads like TCFD. Two demands don't: dual-scenario analysis at 1.5°C and beyond 2°C, and the financial effects of both.
AASB S2 is Australia's mandatory climate disclosure standard. It imports IFRS S2 wholesale, then layers in 'Aus'-prefixed paragraphs that mandate dual-scenario analysis (1.5°C AND exceeding 2°C) and the financial effects of both.
Australian for-profit entities meeting Group 1, 2 or 3 thresholds under the Corporations Act 2001 (large entities, NGER reporters, and asset owners over $5bn). Group 1 reporting begins FY2025, Group 2 from July 2026, Group 3 from July 2027. Lodged with ASIC alongside the annual report.
AASB S2 is the rulebook. The Corporations Act is the law.
The Treasury Laws Amendment (Financial Market Infrastructure and Other Measures) Act 2024 inserted mandatory climate disclosures into Chapter 2M of the Corporations Act 2001. AASB S2 specifies what to disclose, ASIC supervises, and AUASB's ASSA 5000/5010 set the assurance bar. Three reporting groups phase in over three years.
AASB S2 didn't soften IFRS S2. It sharpened it.
Australia took the global baseline and added two demands that no narrative can survive: dual scenarios, and the financial effects of both. That's where reports get audited, and where reports fail.
Two pathways. Quantified at both.
Where IFRS S2 leaves scenario choice flexible, AASB S2 paragraph AusB1 mandates two: a 1.5°C-aligned pathway and one exceeding 2°C. Hand-waving narratives don't satisfy this, and ASIC has signalled it will look here first.
Asset-level, or assurance-fail.
ASSA 5000 / 5010 phases limited assurance from Year 1 to reasonable assurance by FY2030. Asset-level exposure across material physical operations, not country averages or postcode-level proxies, is what makes it through audit and underwrites a credible adaptation case.
One data spine. Five disclosures.
Your transition plan, scenario analysis, anticipated financial effects, Scope 1, 2, 3 emissions and targets all rest on the same asset-level data foundation. Get it right once.
The AASB S2 framework: one law, one standard, four pillars, two assurance steps.
AASB S2 is structurally simple compared to ESRS: a single mandatory standard built on TCFD's four pillars. The complexity sits underneath, in the legislative architecture (Corporations Act, ASIC RG 280), the Australian-specific paragraphs, the assurance pathway, and the Group thresholds that decide who reports when. Click each section to unpack what's actually required.
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Chapter 1: Legislation & architecture
The legislative spine.
The Treasury Laws Amendment Act 2024 inserted mandatory climate disclosures into Chapter 2M of the Corporations Act. ASIC supervises through Regulatory Guide 280, with three reporting groups phased over three years.
- Group 1 (largest): financial years from 1 January 2025
- Group 2 (mid-tier): from 1 July 2026; Group 3 (smaller in-scope): from 1 July 2027
- Sustainability Report lodged with ASIC alongside the annual report
- Directors' declaration required on AASB S2 compliance
- Limited immunity period for Scope 3, scenarios and transition plans (3 years from 1 Jan 2025), excluding ASIC and criminal action
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Chapter 2: AASB S2 General Requirements
The standard, with Australian fingerprints.
AASB S2 imports IFRS S2 wholesale, then layers in 'Aus'-prefixed paragraphs for Australian-specific requirements. Appendix D imports the climate-relevant subset of IFRS S1 so that an entity applying AASB S2 alone has the general requirements covered.
- Modelled on IFRS S2 (ISSB), structured around TCFD's four pillars
- 'Aus' paragraphs for legislative commencement, dual scenarios and Australian context
- Material climate-related risks and opportunities affecting cash flows, finance access, cost of capital
- Time horizons: short, medium, long-term, defined by the entity
- AASB S2025-1 amendments (Dec 2025) align with ISSB updates and ease NGER overlap
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Chapter 3: AASB S2 Governance
Who watches climate risk, and how.
Paragraph 6 of AASB S2 sets out the governance disclosures: board oversight, management's role, and how climate is integrated into existing controls. Limited assurance applies from Year 1, so this gets read carefully by auditors first.
- Board and committee oversight processes for climate risks and opportunities
- Skills, experience and access to expertise on climate at the governance level
- Management's role in assessing, monitoring and managing climate risks
- Frequency of climate-related reporting to the board
- Subject to limited assurance from Year 1 under ASSA 5010
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Chapter 4: AASB S2 Strategy
From hazard to dollars, by scenario.
This is the hard pillar. Australian-specific paragraphs require dual-scenario climate resilience analysis (1.5°C and a pathway exceeding 2°C), and the anticipated financial effects of those scenarios on the entity's prospects.
- Material climate-related risks and opportunities, classified as physical or transition
- Climate Resilience Assessment using two pathways: 1.5°C-aligned AND exceeding 2°C
- Current and anticipated financial effects across short, medium and long-term horizons
- Climate Transition Plan disclosure where one exists, with capex and progress linkage
- Asset-level analysis where geography and exposure are material to cash flows
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Chapter 5: AASB S2 Risk Management
How risks are identified, prioritised and integrated.
Process disclosures around how climate is woven into the entity's overall risk framework. For APRA-regulated entities, this dovetails with CPG 229 expectations.
- Processes for identifying and assessing climate-related risks and opportunities
- Inputs and parameters used: data sources, scope of operations, value-chain coverage
- Priority of climate risks within the overall enterprise risk management framework
- Monitoring, escalation and review cycles, with linkage to internal audit
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Chapter 6: AASB S2 Metrics & Targets
Scope 1, 2, 3, and the Australian quirks.
GHG emissions and target-setting. Scope 3 lands in Year 2 under the transitional relief. Heavy emitters use NGER methodology for Scope 1 and 2; financial institutions face specific financed-emissions rules under the AASB S2025-1 amendments.
- Scope 1 and 2: gross GHG emissions in tCO2e from Year 1, location-based
- Scope 3: from Year 2, considering all 15 GHG Protocol categories
- NGER methodology accepted for NGER-reporting facilities (no double measurement)
- Targets: science-based where possible, time-bound, with interim milestones
- Financed emissions for asset managers, banks, insurers (Scope 3 Category 15) with industry classification flexibility
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Chapter 7: ASSA 5000 / 5010 & ASIC lodgement
From draft to assured filing.
AUASB-issued ASSA 5000 (general assurance requirements) and ASSA 5010 (the timeline) stage limited assurance from Year 1 across the Sustainability Report, scaling to full reasonable assurance from FY2030.
- Year 1: Limited assurance on governance, Scope 1 / 2 emissions and certain strategy paragraphs
- Year 2 to 3: Limited assurance widens across all components of the Sustainability Report
- From FY2030: Full reasonable assurance on the entire climate disclosure
- The financial statement auditor must also audit the sustainability report, supported by climate experts
- Lodged with ASIC alongside the annual report, typically 3 to 4 months after year-end
Climate risk just became an audited disclosure.
Asset-level physical risk, dual scenarios, quantified financial effects, audit-grade methodology. The same data spine carries every component of the Sustainability Report and the climate resilience case to investors.
Anticipated financial effects
Material climate-related risks and opportunities, with current and anticipated financial effects across short, medium and long-term horizons. Qualitative is permitted, but ASIC and assurance pressure favour quantification.
Asset-level physical climate risk
Property-by-property exposure across real estate, supply chain nodes and operational facilities. Country averages won't survive ASSA 5000 limited assurance, and they won't underwrite a credible adaptation plan.
Dual scenarios: 1.5°C and beyond 2°C
AASB S2 paragraph AusB1 mandates two scenarios for the climate resilience assessment. Both pathways must be applied to every material climate-related risk and opportunity. Single-scenario stress tests don't comply.
Audit-grade methodology
Limited assurance from Year 1 across governance and Scope 1 / 2 emissions. Reasonable assurance from FY2030 across the full Sustainability Report. Every model, proxy and assumption must be defensible.
Physical climate risk data, built for AASB S2 disclosure.
Spectra is the physical climate risk data platform behind AASB S2 disclosures at banks, insurers, asset managers, super funds and real estate firms with over $13 trillion in combined AUM. Asset-level exposure, dual-scenario coverage, audit-ready methodology, all in one place.
Asset-level exposure, 1.5bn assets
Material physical climate risk for every asset in scope. 11 hazards, building-level vulnerability, geolocation precision. The granularity ASSA 5000 limited assurance expects, without postcode proxies.
Both pathways AusB1 mandates
CMIP6 SSPs and CMIP5 RCPs covering a 1.5°C-aligned pathway and one exceeding 2°C. Short, medium and long-term horizons in 5 to 10 year intervals to 2100. Every material risk modelled under both.
Hazard exposure to dollars
Annual losses in monetary value and percentage, business disruption risk and confidence intervals. The translation from physical hazard to anticipated financial effect that AASB S2 paragraph 22 requires.
ASSA-ready by design
Model risk management aligned, ISO 27001 and ISO 14001 certified, full methodology documentation. Defensible to limited assurance from Year 1, reasonable assurance from FY2030.
Are you ready for AASB S2 climate disclosure?
Pick your industry. The financial-effects question tailors itself to where physical and transition risk hits your sector hardest under both required pathways.
AASB S2 readiness self-check
AASB S2 physical climate risk: the questions buyers actually ask.
What is AASB S2?
AASB S2 is the Australian Sustainability Reporting Standard for climate-related disclosures. It is the mandatory climate disclosure standard issued by the Australian Accounting Standards Board, modelled on IFRS S2 (ISSB) and built around the four TCFD pillars: governance, strategy, risk management, and metrics and targets. Australian-specific paragraphs add dual-scenario climate resilience analysis and the anticipated financial effects of physical and transition risk on the entity's prospects.
Who has to report under AASB S2?
Australian for-profit entities meeting Group 1, 2 or 3 thresholds under the Corporations Act 2001. Group 1 (largest entities, NGER reporters above 50,000 tCO2e, asset owners over $5 billion) reports for financial years from 1 January 2025. Group 2 commences 1 July 2026, Group 3 from 1 July 2027. The Sustainability Report is lodged with ASIC alongside the annual report, with a directors' declaration on AASB S2 compliance.
What are AASB S2's dual scenario requirements?
AASB S2 paragraph AusB1 mandates climate resilience analysis under at least two scenarios: one consistent with limiting global warming to 1.5°C, and one with significantly higher warming exceeding 2°C. This goes beyond IFRS S2's flexible scenario approach. In practice this means CMIP6 SSPs (typically SSP1-1.9 or SSP1-2.6 for 1.5°C, SSP3-7.0 or SSP5-8.5 for the high-warming pathway) or CMIP5 RCP equivalents. Both pathways must be applied to every material climate-related risk and opportunity.
What are anticipated financial effects under AASB S2?
Anticipated financial effects are the expected impact of material climate-related risks and opportunities on the entity's financial position, performance and cash flows across short, medium and long-term horizons. AASB S2 permits qualitative disclosure where quantification is not yet possible, but ASIC supervisory expectations and assurance pressure under ASSA 5000 favour quantification. For physical risk, this means translating asset-level hazard exposure into monetary impact under both required scenarios.
When does AASB S2 reporting start for each Group?
Group 1 reports for financial years beginning on or after 1 January 2025, with first reports filing now. Group 2 commences 1 July 2026 (mid-tier entities). Group 3 commences 1 July 2027 (smaller in-scope entities). Limited assurance applies from Year 1 across governance and Scope 1/2 emissions, scaling to reasonable assurance across the full Sustainability Report from FY2030. A three-year limited immunity period (1 January 2025 to 31 December 2027) covers Scope 3, scenarios and transition plans, but excludes ASIC and criminal action.
How does Climate X help with AASB S2?
Climate X provides asset-level physical climate risk data for AASB S2 disclosures via Spectra. The platform delivers exposure across 11 hazards for 1.5 billion assets, dual scenario coverage spanning CMIP6 SSPs and CMIP5 RCPs to 2100 (satisfying paragraph AusB1), financial impact translation in monetary value, and full methodology documentation defensible to limited assurance from Year 1 and reasonable assurance from FY2030. Used by Australian and global financial institutions managing over $13 trillion in combined AUM. Explore Spectra or book a demo.
From hazard to dollars.
Asset-level physical climate risk and adaptation data, ready for AASB S2 dual-scenario disclosure and the resilience case downstream.
