ECB Flags Transparency Risks in Revised EU Sustainability Reporting Standards

The European Central Bank (ECB) has raised concerns over the European Union’s revised European Sustainability Reporting Standards (ESRS), warning that recent simplifications could significantly reduce transparency for investors. The revisions, introduced under the European Commission’s Omnibus initiative, aim to ease reporting burdens by reducing mandatory disclosures and narrowing the scope of the Corporate Sustainability Reporting Directive (CSRD).

Key changes include a 61% reduction in mandatory datapoints, removal of voluntary disclosures, and increased flexibility in data estimation and supplier reporting. While these measures are intended to simplify compliance, the ECB cautions that extensive reliefs, exemptions, and phased implementation timelines may weaken the availability and comparability of critical sustainability data, particularly in areas such as climate and biodiversity.

The ECB highlighted that reduced disclosure requirements could create “blind spots” for investors and undermine risk assessment, especially for financial institutions relying on consistent, decision-useful data. Concerns were also raised about declining alignment with international standards, such as those developed by the IFRS Foundation’s ISSB, potentially affecting investor confidence and the attractiveness of EU firms for sustainable finance.

While acknowledging the need to reduce regulatory burden, the ECB emphasized the importance of maintaining a balance between simplification and transparency. It recommended limiting the duration of reporting reliefs and strengthening disclosure requirements to preserve data quality, comparability, and the overall effectiveness of sustainability reporting in supporting financial stability and long-term investment decisions.

The ECB flagging transparency risk in the revised ESRS is a strong signal about how financial-stability regulators view the omnibus recalibration, and it will influence how far simplification actually goes in the final version. Our ESG-strategy and sustainability-due-diligence teams help clients build reporting infrastructure that stays robust regardless of where CSRD scope settles.