EU Commission Revises Sustainability Reporting Standards

Commission cuts mandatory ESRS datapoints by more than 60%

The European Commission adopted revised European Sustainability Reporting Standards on July 3, 2026. The changes reduce mandatory datapoints by over 60% and introduce a voluntary standard for smaller businesses in corporate value chains.

UK companies trading with the EU need to understand these changes. Many face indirect reporting requirements through supply chain relationships with EU businesses covered by the Corporate Sustainability Reporting Directive.

The revision cuts mandatory datapoints from approximately 1,144 to around 450. Total datapoints, including voluntary items, fall by more than 70%. The Commission estimates this will reduce reporting costs by more than 30% per company.

However, the fundamentals remain unchanged. The revised standards maintain the CSRD’s core principles of transparency and double materiality. Material sustainability information still needs disclosure.

What the revised delegated regulation changes

The new rules amend Delegated Regulation (EU) 2023/2772. This follows the Omnibus I simplification package that the EU Council approved in February 2026.

Several major changes take effect for financial years beginning on or after January 1, 2027. Companies already reporting for financial year 2026 can apply the revised standards early on a voluntary basis.

The Commission eliminated all voluntary disclosure requirements. Previously, companies could choose to report certain datapoints beyond mandatory items. The revised framework removes this option entirely. Companies now disclose only what the standards mandate and what meets their materiality threshold.

Materiality assessment shifts to a principle-based approach. The previous system encouraged extensive scoring exercises and detailed documentation. The new approach favours top-down strategic judgement. Companies must still assess what matters, but the process becomes less prescriptive.

A new value-chain cap limits information requests to small and medium businesses. The voluntary standard applies to value-chain partners with 1,000 employees or fewer. This protects smaller suppliers from disproportionate reporting demands.

Climate transition plans now require specific explanations. Companies disclosing plans with greenhouse gas targets incompatible with a 1.5°C pathway must explain how their targets compare to reference values. They must also describe how they considered future developments.

Greater flexibility applies to greenhouse gas reporting boundaries. Companies can now define reporting boundaries using equity share, operational control, or financial control methods. The previous framework restricted these options.

Gender pay gap disclosure becomes conditional. Companies need only report this information if EU or national law already requires it. The blanket requirement no longer applies.

The requirement to report progress towards sustainability targets has been removed. This represented a significant administrative burden, particularly for companies with multiple overlapping targets.

Most significantly, the standards now explicitly state that companies shall not disclose information prescribed by ESRS that fails to meet their materiality threshold. This provides clear legal backing for focused, relevant reporting rather than comprehensive compliance.

Timeline from EFRAG advice to formal adoption

The European Financial Reporting Advisory Group submitted draft simplified ESRS to the Commission in December 2025. The Commission largely affirmed this technical advice in its May 2026 consultation draft.

Meanwhile, the EU Council approved the Omnibus I simplifications in February 2026. This package withdrew the Commission’s authority to adopt sector-specific ESRS. It also raised CSRD scope thresholds to turnover above €450 million and more than 1,000 employees.

The Commission opened a four-week public consultation on the draft delegated act in May 2026. Comments closed on June 3, 2026. Stakeholder feedback informed the final text, though the core simplifications remained intact.

Formal adoption occurred on July 3, 2026. This met the Commission’s commitment to act within six months of the Omnibus entry into force, which would have been September 17, 2026.

Application begins for financial years starting on or after January 1, 2027. Early adopters can apply the revised standards for financial year 2026, benefiting from simplifications a year earlier. The voluntary SME standard takes effect for value-chain reporting in financial year 2027, regardless of whether parent companies adopt early for 2026.

Implications for UK businesses with EU exposure

UK companies are not directly subject to EU law. Nevertheless, many face practical reporting requirements through commercial relationships with EU entities covered by CSRD.

Large EU customers often request sustainability data from UK suppliers. This typically happens through supplier questionnaires, tender requirements, or contractual obligations. The value-chain provisions of CSRD create these indirect reporting pressures.

The new voluntary standard for smaller value-chain partners changes this dynamic. UK SMEs supplying EU businesses can now reference a standardised, proportionate framework. Previously, requests varied significantly between customers, creating duplication and confusion.

For larger UK businesses, the picture differs. Companies with EU subsidiaries may fall directly within CSRD scope. The 60% reduction in mandatory datapoints cuts their compliance burden substantially. However, they still need robust materiality processes and governance structures.

Supply chain due diligence becomes more focused. The revised standards emphasise material impacts over comprehensive data collection. UK businesses need to identify where genuine sustainability risks and opportunities exist in their value chains, rather than gathering information across the board.

Tender requirements in EU markets will gradually reflect the simplified standards. Public procurement processes increasingly reference CSRD compliance. UK exporters competing for EU contracts should expect sustainability criteria aligned with the revised ESRS.

The removal of voluntary disclosures creates clearer boundaries. UK companies responding to EU customer requests can now point to specific mandatory requirements. This reduces scope for open-ended information requests.

Carbon reporting remains central. Despite simplifications, greenhouse gas emissions across all three scopes remain mandatory where material. UK businesses need credible emissions data, particularly if they supply carbon-intensive sectors.

The principle-based materiality approach requires judgement. UK companies cannot simply follow a checklist. They need to understand their business model, value chain, and stakeholder landscape well enough to make defensible materiality decisions.

Revised ESRS requirements in brief

The following points summarise the most important elements of the July 3, 2026 adoption for UK businesses:

• Mandatory datapoints fall from approximately 1,144 to around 450, representing a reduction of more than 60% and estimated cost savings above 30% per reporting entity.
• All voluntary disclosure requirements are eliminated, creating a framework based purely on mandatory material information with explicit permission to exclude non-material prescribed datapoints.
• A new voluntary standard limits the information that large companies can request from value-chain partners with 1,000 or fewer employees, protecting smaller suppliers from disproportionate demands.
• Revised standards apply to financial years beginning on or after January 1, 2027, with an option for early voluntary adoption in financial year 2026.
• Materiality assessment shifts to a principle-based, top-down approach rather than detailed scoring exercises, though companies must still rigorously justify their materiality conclusions.
• Greater flexibility applies to greenhouse gas reporting boundaries, allowing companies to choose between equity share, operational control, or financial control methods.
• Climate transition plans incompatible with 1.5°C pathways require specific explanations comparing targets to reference values and describing consideration of future developments.
• Gender pay gap disclosure becomes conditional on existing legal requirements rather than a blanket ESRS mandate.

Strategic decisions facing affected businesses

Companies need to decide whether early adoption makes sense. Applying the revised ESRS for financial year 2026 brings immediate cost savings. However, it requires readiness to implement the new materiality approach and revised datapoint requirements ahead of competitors.

Materiality processes require rethinking. The shift to principle-based assessment means companies cannot rely on detailed guidance or scoring tools. Board-level oversight becomes more important. Senior leaders need to understand and approve materiality conclusions.

Value chain engagement changes significantly. Businesses covered by CSRD should review their supplier questionnaires and data requests. The voluntary standard for smaller partners provides a clear reference point. Requesting information beyond this framework may damage supplier relationships unnecessarily.

UK suppliers to EU markets should familiarise themselves with the voluntary standard. Understanding what larger customers can reasonably request helps in negotiating data-sharing arrangements. It also guides internal sustainability programmes towards commercially relevant priorities.

Carbon measurement remains non-negotiable for most businesses. Despite overall simplification, greenhouse gas reporting still dominates sustainability disclosure. Companies without credible emissions data face growing commercial disadvantages, particularly in sectors like manufacturing, logistics, and construction.

Documentation standards need attention. The principle-based approach does not mean less rigour. Companies must demonstrate how they reached their materiality conclusions and why certain topics were excluded. This requires clear documentation of decision-making processes.

The removal of sector-specific standards creates both opportunity and uncertainty. Companies cannot wait for sector guidance that will not arrive. They need to apply the general standards to their specific circumstances, which demands deeper understanding of the framework.

Consider how these changes affect public sector supply. UK businesses tendering for contracts in EU markets should align their sustainability reporting with revised ESRS where possible. This demonstrates commercial awareness and reduces friction in procurement processes.

For businesses operating at the margin of CSRD scope, the raised thresholds matter. The Omnibus I package increased turnover and employee thresholds. Some companies previously expecting to fall within scope may now sit outside it. This affects long-term reporting strategy and investment in sustainability infrastructure.

We work with UK businesses navigating EU sustainability requirements through compliance support services that address carbon reporting and ESG frameworks. Practical guidance helps companies focus resources on material issues rather than comprehensive but unfocused data collection.

Where to find authoritative guidance

The European Commission publishes the full text of delegated regulations through EUR-Lex, the official EU legal database. Search for Delegated Regulation (EU) 2023/2772 and subsequent amendments for the complete legal framework.

EFRAG maintains the definitive versions of ESRS on its official website. The European Financial Reporting Advisory Group also publishes implementation guidance and answers to stakeholder questions about the standards.

The UK government provides information on sustainability reporting through the Department for Energy Security and Net Zero. While CSRD does not directly apply in the UK, government guidance addresses how UK companies interact with EU sustainability requirements.

Industry bodies offer sector-specific interpretation. The Institute of Environmental Management and Assessment publishes resources on sustainability reporting frameworks relevant to UK businesses. These resources help translate general standards into sector contexts.

For businesses needing to build internal capability, training on sustainability reporting frameworks covers materiality assessment, carbon accounting, and value chain engagement. Understanding the principles behind the standards matters more than memorising datapoint requirements, particularly given the shift to principle-based assessment.