The conversation around climate risk in financial reporting has shifted significantly. It is no longer enough to produce lengthy sustainability disclosures that tick regulatory boxes. The message emerging from the Corporate Disclosures: Climate Risk in Financial Reporting Forum 2026, hosted with input from The Institute of Chartered Accountants of Scotland (ICAS), is clear: organisations must report less, but report better.
For Chartered Accountants operating across every global market, the implications of that principle run deep.
Quality over quantity in materiality assessments
One of the most consistent themes to emerge from the forum was the central importance of materiality. Boards and preparers are under pressure to make sharper, better-evidenced decisions about what information genuinely warrants inclusion in annual reports. Critically, the discussion extended to transparency around exclusions. Explaining why something has been assessed as immaterial can be just as valuable to stakeholders as disclosing what is material.
Equally important is the recognition that materiality is dynamic. An issue that warranted disclosure in a prior reporting period may not carry the same significance today. This has direct relevance for Chartered Accountants advising organisations that operate under ISSB standards, as well as those working within double materiality frameworks, particularly across European and emerging markets where requirements continue to evolve.
Investors are asking for focus, not volume
There was strong alignment among investor voices at the forum: annual reports are becoming overloaded. Sophisticated investors increasingly supplement company disclosures with third-party data, yet annual reports remain a foundational source of information and their quality matters.
The challenge for preparers is calibration. Too much information obscures issues that genuinely affect decisions. Too little leaves stakeholders without necessary context. For Chartered Accountants in reporting and advisory roles globally, this tension calls for stronger professional judgement and a more deliberate approach to structuring climate-related disclosures.
Finance teams are taking ownership of sustainability reporting
Perhaps the most structurally significant development discussed is the migration of sustainability reporting responsibilities into finance functions. Subject matter expertise continues to sit within operational teams, but the consolidation, verification and reporting of sustainability data is increasingly becoming a finance-led activity.
This shift carries real implications for the profession worldwide. Audit committees are broadening their remit to include sustainability oversight. Climate risk is being embedded into mainstream governance and risk management rather than siloed as an environmental concern. Chartered Accountants who build fluency in sustainability data, assurance and governance frameworks will be well positioned as this transition accelerates across jurisdictions.
Connecting climate risk to financial planning remains a persistent challenge
Organisations are getting better at identifying climate risks, but translating those risks into quantified financial impacts remains genuinely difficult. The root cause is a mismatch in time horizons. Climate scenario analysis often projects decades ahead, sometimes to 2050 and beyond, while financial planning cycles typically cover three years or fewer.
Bridging that gap requires Chartered Accountants to connect scenario outputs to cash flow projections, capital allocation decisions and long-term strategy. Context and interpretation are critical. A scenario showing limited financial impact by a given year may look very different when the analysis is extended by even a few additional years. Climate impacts are rarely linear and communicating that complexity clearly to boards and audit committees is a skill the profession must continue to develop.
People and professional judgement remain indispensable
Better data and emerging AI tools will support more efficient and consistent reporting. However, forum participants were clear that technology is an enabler, not a substitute for professional judgement. The effectiveness of AI-assisted reporting depends entirely on the quality and structure of underlying data, which in turn requires greater standardisation and alignment of taxonomies across financial and sustainability reporting frameworks.
Strong governance, robust assurance and the ability to challenge assumptions remain as important as ever. The growing influence of professionals who have developed with a heightened awareness of environmental risk is also shaping organisational culture, with tangible effects on how businesses define value and manage long-term risk.
A profession at the centre of a defining shift
The direction of travel is clear. Climate risk is no longer a peripheral concern for specialist sustainability teams. It is becoming embedded in financial planning, governance structures and boardroom decision-making across every sector and geography. Chartered Accountants are uniquely placed to lead that integration, connecting the rigour of financial reporting with the emerging standards of sustainability disclosure. The foundation for doing so effectively starts with one principle: understanding what is truly material and communicate it with clarity and purpose.
