When The Institute of Chartered Accountants of Scotland (ICAS) submitted its response to the European Commission’s public consultation on a proposed voluntary sustainability reporting standard, it was contributing to a conversation that reaches well beyond European borders. The standard in question is designed for companies outside the mandatory scope of the Corporate Sustainability Reporting Directive (CSRD), and its implications are significant for Chartered Accountants working with smaller businesses and value chain partners around the world.
The backdrop matters. The European Commission launched its consultation in May 2026 as part of the Omnibus I simplification programme, an initiative aimed at reducing the administrative load on businesses while preserving the integrity of sustainability disclosures. At the heart of the proposal is a “value chain cap” provision: companies subject to the CSRD will be prohibited from requiring value chain partners with 1,000 employees or fewer to provide sustainability information beyond what this voluntary standard sets out. For smaller enterprises that supply into European markets, regardless of where they are headquartered, this is directly relevant.
The voluntary standard draws on, but is distinct from, the EFRAG voluntary SME standard that the European Commission endorsed by recommendation in 2025 and which is already being applied. The new framework is intended to build on that foundation while offering a workable path for entities not currently captured by mandatory reporting obligations.
ICAS framed its response around four key priorities, each of which resonates for the broader profession. First, proportionality: any standard targeting smaller businesses must reflect the genuine resource constraints those organisations face. A framework that mirrors the complexity of obligations designed for large-listed companies will, in practice, be neither useful nor widely adopted.
Second, decision-useful disclosures. ICAS emphasised that sustainability reporting should prioritise the clear presentation of relevant, meaningful information over sheer volume of data points. Crucially, disclosures should tell a coherent story that connects with financial reporting rather than sitting as a separate exercise. This principle is one the global profession has been working towards across multiple frameworks, and it deserves to be embedded firmly in any new standard from the outset.
Third, alignment with the European Sustainability Reporting Standards (ESRS) where appropriate, to support comparability and to ease the transition for entities that may eventually move into expanded reporting requirements. For multinational businesses and their advisers, consistency across frameworks reduces complexity and builds confidence in the disclosures being produced.
Fourth, practical guidance. Standards without accessible supporting materials tend to be applied inconsistently. Clear implementation resources are not an optional extra; they are a prerequisite for the kind of rigorous, comparable reporting that builds trust with investors, lenders, and other stakeholders.
Following the consultation period, the European Commission formally adopted the proposed voluntary standard in July 2026. It has now been submitted to the relevant EU institutions for a two-month scrutiny period. Once formally adopted, companies within the CSRD’s scope will be required to apply the updated reporting standards from financial year 2027.
For the global Chartered Accountancy profession, the trajectory here is instructive. Voluntary frameworks are frequently the proving ground for what later becomes mandatory. Chartered Accountants advising smaller clients in any market should be monitoring how this standard develops, because the definitions, thresholds, and disclosure expectations being settled in Europe today are likely to influence reporting norms far beyond the EU.
There is also a broader professional responsibility at play. As trusted advisers, Chartered Accountants are well placed to help smaller organisations understand not just what they are being asked to report, but why it matters. Translating the intent of a sustainability standard into something a business owner can act on is exactly the kind of value that the profession is uniquely positioned to provide.
Chartered Accountants Worldwide will continue to track how voluntary and mandatory sustainability reporting frameworks evolve across jurisdictions, and what that evolution means for members and their clients globally.
