ESRS Simplified: A Post-Omnibus Guide for Corporates and Financial Institutions
The ESRS have been substantially simplified. EFRAG's December 2025 technical advice cuts mandatory data points by 61%, removes all voluntary disclosures, introduces a fair presentation framework, and allows a top-down double materiality approach. The European Commission is expected to adopt the simplified standards via delegated act by September 2026, applying from FY 2027. This guide explains every standard, what changed, and how to prepare.
By Bo Yu, Founder & Managing Director | Updated March 2026 | ~22 min read
Executive Summary
EFRAG’s December 2025 technical advice simplifies the ESRS dramatically: mandatory data points fall from ~1,178 to ~320, all voluntary disclosures are removed, and a new “fair presentation” framework replaces rigid compliance. The 12 standards remain (2 cross-cutting, 5 environmental, 4 social, 1 governance), but reporting flexibility increases significantly. The European Commission is expected to adopt the simplified standards via delegated act by September 2026, applying from FY 2027.
What Are the ESRS
The European Sustainability Reporting Standards (ESRS) define what companies subject to the Corporate Sustainability Reporting Directive (CSRD) must disclose in their sustainability statements. They are the content layer: the CSRD establishes who must report and when; the ESRS specify what must be reported and how.
The original ESRS Set 1 was adopted by the European Commission on 31 July 2023 as Commission Delegated Regulation (EU) 2023/2772, published in the Official Journal on 22 December 2023, and applicable from financial years beginning on or after 1 January 2024. The standards were developed by EFRAG (the European Financial Reporting Advisory Group) and represent the EU's first mandatory sustainability reporting framework — designed to bring sustainability disclosure to the same level of rigour, assurance, and comparability as financial reporting.
The original standards contained approximately 1,178 individual data points across 12 standards (per EFRAG's authoritative Implementation Guidance 3, published May 2024). They were widely regarded as comprehensive but operationally burdensome — a view confirmed by the experience of Wave 1 reporters in 2024 and the EFRAG-BCG implementation study. That feedback, combined with the EU's broader competitiveness agenda, drove the simplification exercise that culminated in EFRAG's December 2025 technical advice.
The simplified ESRS are not yet law
EFRAG delivered its final technical advice to the European Commission on 3 December 2025. The Commission is preparing a delegated act to formally adopt the simplified ESRS, with a legal deadline of 18 September 2026 (six months after the Omnibus I Directive enters into force). A public feedback period on the delegated act is expected before adoption, consistent with standard Commission practice for delegated acts. Timing has not been officially confirmed. Until the delegated act is adopted, the original ESRS Set 1 (as amended by the Quick Fix Delegated Regulation) remains in force for Wave 1 companies. The simplified ESRS are intended to apply from FY 2027, with possible voluntary early application from FY 2026.
The Simplification: What Changed and Why
In March 2025, the European Commission formally mandated EFRAG to simplify the ESRS in line with the Omnibus I simplification package. EFRAG published Exposure Drafts in July 2025, received over 1,500 stakeholder responses across two consultation periods, and delivered its final technical advice on 3 December 2025. The result is a substantial structural streamlining — but one that preserves the core architecture and obligations of the CSRD reporting framework.
Headline changes (per EFRAG's technical advice — subject to Commission adoption)
61% reduction in mandatory data points — from approximately 783 mandatory data points (161 always-mandatory plus 622 if-material) to approximately 320. All 269 voluntary data points have been removed entirely, producing an overall reduction of approximately 71%.
Fair presentation framework — sustainability reporting must fairly present material information about impacts, risks, and opportunities, considering the overall picture. This shifts the emphasis from mechanical compliance with each disclosure requirement to decision-useful, balanced reporting. Aligns with the equivalent concept in IFRS financial reporting and IFRS S1.
Top-down double materiality option — companies may now begin the DMA at the strategic/topic level, examining business model, sector, and key activities, then drill down. The previously mandatory detailed topic list (AR 16) is now non-binding guidance.
Principles-based narrative disclosures — policies, actions, and targets can be described in a more flexible, less prescriptive manner. Companies choose how to structure these disclosures.
Value chain data pressure reduced — the preference for direct value chain data has been removed. Companies may use estimates, sector averages, spend-based proxies, and other indirect sources where primary data is not available without undue cost or effort.
Sector-specific ESRS eliminated — approximately 40 planned sector standards will not be developed. The Commission may provide optional sector guidance if requested.
Limited assurance retained permanently — the planned escalation to reasonable assurance has been removed by the Omnibus I Directive.
Enhanced ISSB interoperability — GHG emissions boundary revised to the GHG Protocol financial control approach; anticipated financial effects provisions aligned more closely with IFRS S1; transition plan disclosures aligned with IFRS S2.
Futureproof perspective: The simplified ESRS change how companies report, not what they are accountable for. Double materiality remains mandatory. Sustainability statements remain in the management report, subject to assurance and digital tagging. Companies that mistake simplification for deregulation will find themselves unprepared when the FY 2027 reporting clock starts. The most effective response is to use the extended timeline to build leaner, more integrated reporting systems — not to pause preparation.
The 12 ESRS Standards
The ESRS retain the same 12-standard structure under the simplified framework. What changes is the depth and volume of each standard, not the architecture. Below is a summary of each standard and its focus area. For a full explanation of who must report and when, see our CSRD post-Omnibus guide.
Cross-cutting standards
StandardFocusKey role ESRS 1 Cross-cutting General Requirements The architectural standard. Defines the framework, double materiality concept, value chain scope, reporting areas (Governance, Strategy, IRO Management, Metrics & Targets), qualitative characteristics, phase-in provisions, and the fair presentation requirement. Does not contain specific disclosure requirements. ESRS 2 Cross-cutting General Disclosures Covers basis for preparation, governance structures, strategy and business model, and the process to identify material IROs. Under the simplified ESRS, ESRS 2 now also consolidates Policies, Actions, Metrics, and Targets (previously called MDRs, now renamed General Disclosure Requirements — GDR-P, GDR-A, GDR-M, GDR-T). Crucially, ESRS 2 disclosures are now subject to the materiality filter — previously, certain disclosures were mandatory regardless of materiality outcome.
Environmental standards
Note: The reduction percentages and specific changes listed below reflect EFRAG's technical advice of 3 December 2025. The European Commission may adjust these when adopting the simplified ESRS delegated act (expected by September 2026). Readers should verify the final content against the enacted delegated act once published on EUR-Lex.
StandardFocusSimplified ESRS key change ESRS E1 Environmental Climate Change 53% data point reduction. Scenario analysis no longer mandatory. Energy intensity metric removed. Transition plan disclosures consolidated and aligned with IFRS S2. GHG boundary revised to GHG Protocol financial control approach. Retains special status: if E1 is assessed as not material, a detailed explanation is required. ESRS E2 Environmental Pollution 61% data point reduction. Anticipated financial effects removed (retained only in E1 and ESRS 2). Microplastics disclosure enhanced to include secondary microplastics. ESRS E3 Environmental Water and Marine Resources 70% data point reduction. "Marine resources" removed from title. Water intensity metric removed. ESRS E4 Environmental Biodiversity and Ecosystems Significant reduction. LEAP approach guidance removed. Extended phase-in: Wave 1 entities may omit all E4 information for FY 2025–2026 under the Quick Fix. ESRS E5 Environmental Resource Use and Circular Economy Streamlined. New data point on waste management. Relevant for companies subject to the EU Batteries Regulation, where product-level circularity data intersects with ESRS reporting.
Social standards
StandardFocusSimplified ESRS key change ESRS S1 Social Own Workforce ~70% reduction. Health and safety policy removed as explicit requirement. Gender pay gap must be reported unadjusted. New data point on adequate wages (anchored in ILO living-wage principles). Human rights policy moved to ESRS 2. ESRS S2 Social Workers in the Value Chain ~70% reduction with extended phase-ins. Wave 1 entities may omit all S2 information for FY 2025–2026 under the Quick Fix. ESRS S3 Social Affected Communities ~70% reduction. Extended phase-in provisions as per S2. ESRS S4 Social Consumers and End-Users ~70% reduction. Extended phase-in provisions as per S2.
Governance standard
StandardFocusSimplified ESRS key change ESRS G1 Governance Business Conduct Political influence and lobbying disclosures simplified. Average time-to-pay metric removed. Focus retained on anti-corruption, corporate culture, and supplier relationship management.
Double Materiality: Simplified but Unchanged
Double materiality remains the mandatory methodological foundation of ESRS reporting. A sustainability matter is material if it meets either impact materiality (the company's effects on people and the environment) or financial materiality (risks and opportunities affecting the company's financial position, performance, or cash flows), or both. This dual-perspective requirement is unchanged by the simplification.
What has changed is how companies conduct the assessment:
Top-down approach now permitted. Companies may start at the strategic level — examining business model, sector, geographic context, key activities — to identify evidently material or immaterial topics before drilling into sub-topics and individual IROs. The bottom-up approach remains available; companies choose.
Mandatory topic list (AR 16) eliminated. The previously binding detailed checklist of topics, sub-topics, and sub-sub-topics is now non-binding guidance — one input among many, not a mandatory starting point.
Aggregation flexibility. Companies may report at the topic or sub-topic level where IRO-level granularity is not decision-useful.
Documentation carry-forward. The DMA need not be fully repeated annually unless significant changes arise in the company's business, value chain, or regulatory environment.
Materiality filter extended to ESRS 2. Previously, certain ESRS 2 disclosures were mandatory regardless of the materiality outcome. Under the simplified ESRS, all disclosures are subject to the materiality of information filter.
Anti-greenwashing clarification
The simplified ESRS introduce an explicit clarification: measures that reduce an organisation's own negative impacts or comply with legal requirements are not classified as positive impacts. This prevents companies from counting legally mandated actions — such as meeting emissions limits or complying with due diligence directives — as positive sustainability contributions in their reporting.
Original ESRS vs. Simplified ESRS
Original ESRS Set 1 (July 2023)
- ~1,178 total data points (161 always-mandatory, 622 if-material, 269 voluntary)
- Bottom-up DMA from mandatory topic list
- Highly granular disclosure checklists
- PATs repeated in each topical standard
- ~40 sector-specific standards planned
- Preference for direct value chain data
- Hybrid GHG boundary approach
- Anticipated financial effects across all topical standards
- No explicit fair presentation framework
- Full annual DMA repetition required
- Limited assurance with planned move to reasonable
Simplified ESRS (Dec 2025 TA — not yet adopted as law)
- ~320 mandatory data points (61% reduction); zero voluntary
- Top-down or bottom-up DMA (company choice)
- Principles-based narrative flexibility
- PATs consolidated into ESRS 2 as GDRs
- Sector-specific ESRS eliminated entirely
- Preference removed; estimates and proxies permitted
- GHG Protocol financial control approach (ISSB-aligned)
- Anticipated financial effects E1 and ESRS 2 only
- Explicit fair presentation framework (IFRS S1 aligned)
- DMA carry-forward unless significant changes
- Limited assurance permanently (no escalation)
Wave 1 Companies: Transitional Reliefs for FY 2025–2026
Wave 1 companies — large public-interest entities already reporting under the CSRD for FY 2024 — are in a transitional position. The Stop-the-Clock Directive (EU) 2025/794 delayed Wave 2 and Wave 3 requirements, but did not capture Wave 1 entities. To bridge the gap until the simplified ESRS take effect, the Commission adopted the "Quick Fix" Delegated Regulation (EU) 2025/1416 (adopted 11 July 2025, published in the OJ on 10 November 2025, applicable from FY 2025).
The Quick Fix provides the following transitional reliefs for all Wave 1 entities for FY 2025 and FY 2026:
May omit all information from ESRS E4 (Biodiversity), S2 (Workers in Value Chain), S3 (Affected Communities), and S4 (Consumers/End-Users) — even where these topics are assessed as material. Must still report the materiality assessment outcome and a summarised description of policies, actions, targets, and relevant metrics per ESRS 2.
May omit anticipated financial effects disclosures for FY 2025 and FY 2026 (previously only a first-year exemption).
Phase-in provisions previously available only to companies with ≤750 employees are extended to companies with >750 employees for FY 2025 and FY 2026, including certain S1 (Own Workforce) disclosures.
Wave 1 scope exemption
Separately, the Omnibus I Directive permits — but does not require — Member States to exempt Wave 1 companies that fall below the new thresholds (1,000 employees and €450M turnover) from CSRD reporting for FY 2025 and FY 2026. Whether your organisation benefits from this exemption depends on national transposition. Until transposition occurs, existing CSRD obligations remain in force.
Assurance and Digital Tagging
Assurance: limited, permanently
All companies in CSRD scope must obtain third-party limited assurance on their sustainability statements from their first reporting year. The Omnibus I Directive permanently removes the requirement to transition to reasonable assurance — limited assurance is the permanent standard. The Commission must adopt harmonised limited assurance standards by 1 July 2027. Pending those standards, Member States may apply national assurance requirements. The key international reference is ISSA 5000, finalised by the IAASB in 2024.
Digital tagging (XBRL)
Sustainability reports must be digitally tagged using the European Single Electronic Format (ESEF), making data machine-readable and comparable. EFRAG published the final ESRS Set 1 XBRL Taxonomy in August 2024. ESMA published a Consultation Paper on the ESEF RTS for sustainability reporting in December 2024, with comments closing March 2025, and was expected to submit a final report and draft technical standards to the Commission for endorsement in Q3 2025. However, the Commission has not yet adopted the ESEF amendment, and the mandatory application date for XBRL tagging of sustainability reports has not been confirmed as of March 2026. The European Commission has stated that the digital sustainability markup rules will only apply once the ESEF amendment is formally adopted. Additionally, the significant data point reduction under the simplified ESRS will require a corresponding taxonomy revision, which may further affect the timeline. Companies should monitor ESMA publications and the simplified ESRS delegated act for confirmation before making major investments in taxonomy implementation.
Interoperability with ISSB Standards
The simplified ESRS explicitly aim to enhance interoperability with the ISSB's IFRS S1 and S2 sustainability disclosure standards. EFRAG and the IFRS Foundation published joint interoperability guidance in May 2024, illustrating the high degree of alignment between the two frameworks.
The key structural difference remains: ESRS use double materiality (impact and financial), while ISSB uses single (financial) materiality. However, the financial materiality component is aligned between the two. The simplified ESRS enhance alignment through the fair presentation principle (matching IFRS S1), the revised GHG emissions boundary (financial control approach, matching ISSB), and revised anticipated financial effects provisions.
Dual compliance caution
Some simplified ESRS reliefs go beyond what the ISSB standards permit. Companies that intend to assert compliance with both ESRS and ISSB frameworks should evaluate the implications carefully — particularly around phase-in provisions, undue-cost-or-effort exemptions, and anticipated financial effects provisions.
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Key Milestones and Timeline
How to Prepare: An Implementation Framework
The simplified standards and extended timelines create a preparation window — not permission to stop. Sustainability data remains capital-market relevant. Banks, investors, and rating agencies continue integrating ESG metrics into risk modelling. Companies that dismantle preparation efforts risk higher implementation costs if scope is expanded under the review clause.
Step 1: Confirm your reporting status
Determine whether your organisation remains in CSRD scope under the revised thresholds (1,000+ employees and €450M+ turnover). If you fall below, consider voluntary reporting under the VSME standard (expected 2026, timing dependent on legislative process). See our CSRD post-Omnibus guide for the full scope analysis.
Step 2: Review your double materiality assessment
If you have already conducted a DMA under the original ESRS, review it against the simplified framework. The top-down approach and fair presentation filter may allow you to streamline. If you have not started, use the simplified guidance to scope the exercise efficiently. Coordinate with your auditor on methodology and documentation standards.
Step 3: Identify removable data points
Once the Commission's delegated act is published (expected Q2–Q3 2026), map which data points have been removed from your current or planned reporting scope. Do not over-invest in collecting data for disclosures that are likely to be eliminated. Reallocate effort to the data points that remain — and to improving data quality, internal controls, and governance processes.
Step 4: Redesign value chain data collection
Under the value chain cap introduced by the Omnibus I Directive, companies with 1,000 employees or fewer that are not in CSRD scope can refuse information requests beyond the scope of voluntary sustainability reporting standards. The Commission is expected to adopt the VSME-based voluntary standards via delegated act by 2026, though the exact timing remains dependent on the broader legislative process and has not been officially confirmed. Until the VSME delegated act is published, the precise boundary of permissible information requests is not yet legally defined. Companies should segment suppliers by size and sustainability risk, adopt estimates, sector averages, and spend-based proxies for smaller suppliers, and maintain deeper engagement only with high-impact value chain partners on a risk-proportionate basis.
Step 5: Align governance and assurance
Board oversight, internal controls, and structured ESG data management remain essential — even under limited assurance and simplified standards. Engage your auditor early to agree on the approach. The reduced data point count does not reduce the need for rigorous, audit-ready process and documentation.
Understand what the simplified ESRS mean for your reporting obligations
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For the broader CSRD framework changes, see our CSRD post-Omnibus guide. For ISSB interoperability, see our ISSB global adoption guide.
Frequently Asked Questions
Conclusion
The simplified ESRS represent a significant recalibration of EU sustainability reporting — reducing volume and complexity while preserving the core architecture of double materiality, management report integration, assurance, and digital tagging. The change is in how companies report, not what they are accountable for.
The next six months are critical. The Commission's delegated act is expected to finalise the simplified standards. The VSME standard is expected to define the value chain data cap. Member States are required to transpose the Omnibus I provisions. Companies that use this period to streamline their DMA, adjust data collection to the new framework, and build lean, audit-ready reporting systems will be in the strongest position — whether for FY 2027 compliance, investor expectations, or competitive advantage.
Disclaimer: This article is intended as a practical orientation guide, not legal advice. It reflects information available as of mid-March 2026. The simplified ESRS have not yet been formally adopted — EFRAG's technical advice is with the European Commission, and the delegated act is expected by September 2026. Key elements remain in motion: the delegated act content, XBRL taxonomy revision, Member State transposition of Omnibus I, and the VSME standard. Readers should verify all compliance-critical obligations against the authoritative legal text on EUR-Lex and seek qualified legal counsel before making compliance decisions. Futureproof Solutions monitors regulatory developments continuously and updates this guidance accordingly.