Why EU firms still choose voluntary sustainability reporting

The landscape of European corporate sustainability is currently defined by a striking contradiction. While the recent adoption of the Omnibus I Directive has significantly narrowed the legal scope of mandatory climate disclosures—relieving thousands of firms from immediate regulatory pressure—corporate action is not slowing down. Instead of retreating, the majority of mid-market companies are doubling down on their ESG commitments.

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This shift signals that sustainability reporting has moved beyond a "check-the-box" compliance exercise. Today, integrating the European Sustainability Reporting Standards (ESRS) is becoming a strategic necessity for managing financial materiality, securing supply chain positions, and maintaining the trust of an increasingly risk-averse investment community.

The Post-Omnibus Regulatory Landscape: Navigating Directive (EU) 2026/470

The entry into force of the Omnibus I Directive on March 18, 2026, marks a pivotal shift in the European Union's approach to corporate accountability. By significantly raising thresholds and delaying application timelines, the EU aims to balance its ambitious sustainability goals with the need to alleviate the administrative burden on smaller and mid-sized enterprises.

Impact of higher thresholds on CSRD and CSDDD scope

The scope of the Corporate Sustainability Reporting Directive (CSRD) has been narrowed to target only the largest entities, requiring EU organizations to meet a threshold of 1,000 employees and €450 million in net turnover to trigger mandatory reporting. Similarly, the Corporate Sustainability Due Diligence Directive (CSDDD) now primarily applies to EU organizations with 5,000 employees and €1.5 billion in net turnover, or non-EU organizations generating €1.5 billion within the Union.

Reduced liability and the removal of sector-specific standards

Under the new Directive (EU) 2026/470, several compliance requirements have been eased, including the removal of mandatory sector-specific standards and the elimination of the requirement for organizations to adopt a climate change mitigation transition plan. Furthermore, the EU has capped potential fines for non-compliance at 3% of an organization's net global turnover and strengthened the rights of companies to withhold information that could be commercially prejudicial.

Regional implementation case Study: Finland’s Reporting Contraction

The impact of these deregulatory measures is clearly visible at the member-state level, where countries like Finland are proposing to align local laws with the higher EU thresholds. The Finnish government estimates that these changes will reduce the number of domestic companies subject to mandatory sustainability reporting from approximately 1,300 down to just 130, a 90% reduction intended to lighten the administrative load on Finnish industry.

Delayed timelines and transposition deadlines for member states

Following the European Parliament's approval in late 2025, the Omnibus I Directive set a transition period that allows member states until July 26, 2028, to transpose the new CSDDD requirements into national law, with full application not expected until July 2029. For the CSRD, organizations that no longer fall under the revised thresholds are not required to report for financial years starting on or after January 1, 2027, though listed companies meeting certain criteria may opt to stop reporting as early as the 2025 financial year.

The Strategic Rationale for Voluntary ESG Disclosure

Despite the significant reduction in mandatory reporting requirements, a "reporting paradox" has emerged where the majority of excluded firms choose to maintain high disclosure standards. For these organizations, sustainability reporting has evolved from a regulatory hurdle into a fundamental component of strategic risk management and market positioning.

Beyond compliance: managing ESG risks and financial materiality

A recent survey by osapiens found that 90% of companies originally within the CSRD scope—but now excluded by the Omnibus I thresholds—intend to continue their sustainability reporting, with 86% specifically planning to stick to CSRD-aligned requirements. This commitment is largely driven by the recognition of "Financial Materiality" as an innovative tool for identifying and analyzing exposure to complex ESG risks, which in turn informs better internal decision-making.

Leveraging ESRS frameworks for long-term investor trust

Utilizing the rigorous ESRS frameworks allows companies to provide high-quality data that builds credibility with financial stakeholders. By publishing annual, reviewed reports, companies can respond promptly and accurately to ESG questionnaires, demonstrating a level of resilience that is increasingly required to secure long-term investment.

Value Chain Pressure and the Mandatory Nature of Scope 3 Data

Market dynamics often supersede regulation, particularly through the demands of "mature" customers who remain within the CSRD scope. These larger entities require granular data from their suppliers to account for their own Scope 3 emissions; consequently, smaller firms that provide high-quality, frequent reporting ensure they remain viable and attractive partners within these global value chains.

Securing Competitive Advantage through Enhanced Credit Access and Customer Audits

Sustainability reporting has crossed a threshold where it is now central to maintaining market access and securing favorable credit terms. Banks and lenders increasingly view the monitoring of benchmark ESG data as a prerequisite for lending, making voluntary disclosure a strategic move to lower the cost of capital and satisfy rigorous customer audits.

Standardizing Voluntary Disclosures: EFRAG’s New Framework for Non-SMEs

To support the high volume of companies opting for voluntary disclosure, European regulators are developing specialized frameworks to ensure data remains comparable and standardized. These efforts focus on creating a middle ground for large companies that fall outside the current CSRD scope but still face intense market pressure for ESG transparency.

Bridging the gap between VSME and Full ESRS Compliance

The European Commission is expected to adopt a new Voluntary Standard (VS) later this year, specifically designed for non-SME companies that do not meet the 1,000-employee or €450 million revenue thresholds. This new standard will build upon the foundations of the Voluntary Standard for SMEs (VSME) released by EFRAG in 2024, providing a scalable reporting path for larger organizations that wish to align with the Green Deal’s transparency goals without the full complexity of mandatory ESRS.

EFRAG’s call for stakeholder engagement on voluntary standards

EFRAG has launched a formal call for expressions of interest, seeking participation from EU companies, auditors, lenders, and investors to refine how this upcoming voluntary standard will be applied in practice. This collaborative process involves webinars, surveys, and interviews to ensure the framework effectively serves the needs of stakeholders who rely on sustainability information for valuation and risk assessment.

The Role of GRI 14 and Sector-Specific Expectations in High-Impact Industries

In tandem with broader European standards, sector-specific expectations continue to intensify, particularly for high-impact industries. The 2026 launch of GRI 14—a dedicated standard for the mining sector covering land use and Indigenous rights—illustrates this trend. As voluntary reporting becomes more granular, companies in sectors such as mining, oil and gas, and textiles are finding that adhering to these specialized standards is essential to meet the evolving expectations of global investors and community stakeholders.