CSRD and ESRS Compliance

The original CSRD expanded sustainability reporting beyond the earlier non-financial reporting population. Directive (EU) 2026/470 later narrowed the main Articles 19a and 29a scope from financial years beginning in 2027 to undertakings or parent groups exceeding EUR 450 million net turnover and 1,000 average employees. For financial years beginning in 2025 or 2026, check whether the Member State used the optional exemption for an undertaking below either new threshold. Preserve earlier category and wave evidence, but use the amended thresholds, exemptions, sector or issuer rules, and national law for the current conclusion.

The reporting perimeter cannot be copied from a policy template. ESRS 1 says the sustainability statement is for the same reporting undertaking as the financial statements, and then extends the information to material impacts, risks, and opportunities (IROs) connected through direct and indirect business relationships in the upstream and downstream value chain.

ESRS compliance begins with double materiality, not with a fixed list of sustainability topics. The undertaking must identify impacts, risks, and opportunities, assess impact materiality and financial materiality, and then disclose the ESRS information that is material or otherwise required irrespective of the materiality outcome.

Control the standards edition as part of the compliance file. The Commission adopted revised ESRS on 3 July 2026, but they remain subject to Parliament and Council scrutiny and do not apply until that process ends. A report still governed by Delegated Regulation (EU) 2023/2772 should not silently use requirements, reliefs, or datapoint references from the pending revised text.

A defensible assessment should preserve the criteria used, the stakeholder and source inputs considered, the thresholds applied, and the link from each material impact, risk, or opportunity to the relevant ESRS disclosure requirements. Climate change needs particular care because ESRS requires a detailed explanation if the undertaking concludes that climate change is not material and omits all ESRS E1 disclosures.

ESRS value-chain reporting is not a request to document every supplier or customer. The sustainability statement must include material upstream and downstream value-chain information where needed to understand material impacts, risks, and opportunities. Different matters can be material in different parts of the value chain.

Where value-chain data is incomplete, the Accounting Directive requires the undertaking, during its first three years of being subject to sustainability reporting, to explain the efforts made to obtain the information, why it could not be obtained, and the plans to obtain it in the future. That explanation should be tied to a real data-collection log rather than a boilerplate disclaimer.

CSRD compliance includes assurance over sustainability reporting. The amended audit rules require an assurance opinion on a limited-assurance basis, covering compliance with the Directive, the ESRS standards, the process used to identify reported information, Article 8 Taxonomy reporting where applicable, and the electronic markup requirement once the marking rules apply.

The evidence pack should be designed for review before the sustainability statement is drafted. Assurance will be difficult if materiality judgments, value-chain estimates, source systems, controls, and management approvals are kept in separate tools with no stable version history.

CSRD links the management report to the ESEF electronic format and future sustainability markup, including Article 8 Taxonomy disclosures. Directive (EU) 2026/470 now states expressly that undertakings are not required to mark up sustainability reporting until the marking rules are adopted through Delegated Regulation (EU) 2019/815.

EFRAG's ESRS Set 1 XBRL taxonomy material is a readiness resource, not the final tagging rule. Preparers can structure the human-readable statement around separable datapoints, preserve fact-level evidence, and test mappings, but should not describe that work as a required or completed statutory sustainability-tagging filing.

A CSRD compliance file should remain usable after the annual report is published. It should explain what changed since the prior report, which materiality judgments or value-chain estimates are likely to be challenged, which data controls failed or required manual adjustment, and which ESRS disclosures need earlier collection in the next cycle.

Do not include EU-wide penalty amounts or enforcement guarantees unless the source material for the relevant Member State supports them. CSRD compliance is implemented through national law and assurance, publication, and filing controls; unsupported penalty figures or generic statements can make the page less accurate.