Why the EU introduced the Omnibus
Over the past few years, the European Union introduced several major sustainability regulations designed to improve corporate transparency, strengthen responsible business practices and support the shift towards a more sustainable economy. Together, initiatives such as the CSRD, the CSDDD and the EU Taxonomy considerably expanded corporate reporting and governance expectations.
While these regulations were broadly welcomed for improving sustainability disclosure and accountability, businesses also raised real concerns about implementation complexity, overlapping obligations and administrative cost. Mid-sized companies and businesses operating across multiple jurisdictions were especially vocal about the resource demands of complying with several ESG regulations at once.
In response, the European Commission introduced the Omnibus Simplification Package. Rather than changing the overall sustainability ambitions of the European Green Deal, the package was designed to simplify implementation, cut unnecessary reporting burden and improve consistency across related legislation. It has since cleared the full legislative process and is now in force.
What the EU Omnibus Simplification Package changed
The Omnibus Package streamlines several existing sustainability regulations into a more proportionate, operationally manageable framework. Rather than creating an entirely new reporting system, it simplifies requirements under four major pieces of legislation:
-
Corporate Sustainability Reporting Directive (CSRD)
-
Corporate Sustainability Due Diligence Directive (CSDDD, also known as CS3D)
-
EU Taxonomy Regulation
-
Carbon Border Adjustment Mechanism (CBAM)
The package went through the full EU legislative process between 2025 and 2026. The European Parliament approved the CSRD and CSDDD changes on 16 December 2025, the Council signed off on 24 February 2026, and the revised directive was published in the Official Journal shortly after, entering into force in March 2026. CBAM's own simplifications moved slightly ahead of that timetable, taking effect from 20 October 2025.
What changed under the CSRD
The CSRD had been one of the most significant developments in ESG reporting, extending mandatory sustainability disclosure to a much larger group of organisations than its predecessor ever covered. The Omnibus has now pulled a large share of those organisations back out again.
A much narrower reporting scope
The headline change is to who has to report at all. Mandatory CSRD reporting is now restricted to companies that exceed both 1,000 employees and €450 million in net annual turnover, a dual test where both conditions have to be met. The European Commission's own estimate is that this removes roughly 80% of the companies that had previously been expected to report, a figure consistently echoed by law firms and advisory bodies tracking the change since. Mandatory reporting is now concentrated on the largest organisations operating in the EU, with everyone else no longer required to comply directly.
Later deadlines for companies still working towards compliance
Companies that had not yet started reporting under the original timetable have also been given more time. Reporting obligations for these organisations have been postponed by roughly two years, giving them longer to strengthen governance structures, build out ESG data systems and get to grips with reporting requirements before compliance becomes mandatory.
A genuinely simplified ESRS
The Omnibus also triggered a review of the European Sustainability Reporting Standards (ESRS), the detailed rules that set out exactly what companies in scope have to disclose. That review is no longer theoretical. On 3 July 2026, the European Commission formally adopted the revised, simplified ESRS along with a new voluntary sustainability reporting standard for companies outside mandatory CSRD scope. The revision follows EFRAG's finalised proposal from December 2025, which cut the number of mandatory data points by roughly 61%. For companies still in scope, that should mean a noticeably lighter, more focused reporting exercise than the original standards required. For companies now outside scope, the new voluntary standard offers a lighter-touch way to keep producing credible sustainability disclosures for customers, lenders and investors who still ask for them.
What changed under the CSDDD
The Corporate Sustainability Due Diligence Directive sets out requirements for organisations to identify, prevent and address adverse human rights and environmental impacts across their operations and value chains. Like the CSRD, it has come out of the Omnibus process considerably narrower.
A much higher threshold
Mandatory due diligence obligations under the CSDDD (sometimes called CS3D) now apply only to companies that exceed both 5,000 employees and €1.5 billion in net annual turnover, up sharply from the original 1,000 employees and €450 million. Non-EU companies generating comparable turnover within the EU remain in scope on a similar basis. This is a considerably smaller population of companies than the original directive would have captured.
A risk-based approach to the value chain
Rather than requiring the same depth of assessment across an entire value chain, the revised directive steers companies towards focusing due diligence effort on the areas where adverse impacts are most likely to be severe, rather than treating every supplier relationship as equally high-risk. In practice, this should reduce the administrative load associated with blanket supplier assessments while keeping the focus on the relationships that carry the greatest actual risk.
EU-wide civil liability regime removed
One of the more debated changes is the removal of the harmonised, EU-wide civil liability regime that was part of the original directive. Liability for breaches now falls back to individual member states' own national laws rather than a single common EU standard, a change that campaign groups have flagged as a meaningful weakening of enforcement compared with the original text.
More time to prepare
The transposition deadline for member states has been pushed back to 26 July 2028, with the first companies expected to start applying the rules roughly a year after that. Climate transition plans are still required to be adopted by in-scope companies, though the obligation to actively implement them has been softened compared with the original proposal.
What changed under the EU Taxonomy and CBAM
The Omnibus touched two further pieces of legislation that organisations often encounter alongside CSRD and CSDDD.
EU Taxonomy Regulation. New materiality thresholds mean fewer companies need to report full Taxonomy alignment data, reporting templates have been streamlined, and the Do No Significant Harm assessment criteria have been simplified, effective from financial year 2025.
Carbon Border Adjustment Mechanism (CBAM). A new de minimis threshold exempts importers bringing in 50 tonnes or less of CBAM-covered goods per year, replacing the previous €150-per-consignment rule. According to the European Commission, this removes roughly 90% of importers from CBAM obligations while still covering around 99% of the embedded emissions the mechanism was designed to capture. The change took effect on 20 October 2025, ahead of CBAM's definitive regime (which includes certificate purchase obligations) starting on 1 January 2026; certificate purchases themselves have been pushed back to 2027.
What remains unchanged
Despite the scale of these simplifications, several important principles have held firm. The European Union continues to emphasise corporate sustainability transparency, climate-related disclosure, human rights due diligence, environmental accountability, ESG governance and sustainable finance objectives.
In other words, the Omnibus should not be read as a reduction in sustainability ambition. It is better understood as an effort to make implementation more proportionate and efficient while keeping the broader policy objectives of the European Green Deal intact. Organisations well outside the new thresholds should still think carefully before treating this as a reason to pause ESG programmes altogether.
Practical implications for organisations
For a lot of organisations, the immediate task now is working out exactly where the new rules leave them rather than managing ongoing uncertainty. Companies that had been preparing for CSRD or CSDDD reporting should now check:
-
Whether they fall within the new thresholds under either directive
-
Their actual reporting or due diligence start date, given the extended timelines
-
How resources previously earmarked for compliance should be reallocated
-
Which data collection priorities still matter, and which no longer do
-
Whether external assurance plans need revisiting
-
Whether governance structures built for the old scope still make sense at the new one
That said, organisations should be cautious about dropping their sustainability work entirely. Even where reporting obligations have lifted or thresholds have risen, plenty of capabilities remain genuinely valuable, including ESG governance frameworks, greenhouse gas accounting, double materiality methodologies, internal controls over sustainability data, supply-chain due diligence processes and stakeholder engagement mechanisms. Many organisations also continue to face investor expectations, customer requirements and voluntary reporting commitments that sit entirely outside regulatory compliance.
The value of flexibility, even after the rules have settled
The Omnibus process is a useful reminder that ESG regulation keeps moving even once a package is adopted. Rather than designing systems around the exact letter of one directive, organisations tend to benefit more from building sustainability management processes flexible enough to adapt as reporting expectations shift again in future.
That includes integrated ESG data management, cross-functional governance spanning finance, sustainability, legal and procurement, scalable reporting processes, solid documentation methods and clear ownership of sustainability information. Organisations with this kind of adaptable governance are generally better placed to respond to the next round of change without redesigning their reporting systems from scratch.
Looking beyond compliance
Although most of the attention has landed on reporting thresholds, the longer-term value of sustainability regulation goes well beyond compliance itself. Robust ESG governance supports better risk identification, stronger operational resilience, improved investor confidence, more informed strategic decision-making, greater supply-chain transparency and stronger stakeholder trust.
Many organisations are increasingly folding sustainability information into business planning, investment decisions and enterprise risk management rather than treating ESG reporting as a standalone compliance exercise. That broader perspective remains just as relevant now the reporting thresholds have narrowed as it was when they were wider.
Where things stand now
The EU Omnibus Simplification Package marks a genuine turning point in European sustainability regulation, not a reversal of it. CSRD and CSDDD are both considerably narrower than they were, CBAM now exempts the great majority of small importers, the EU Taxonomy has been streamlined, and the ESRS themselves have just been formally simplified. But the direction of policy, transparency, governance and responsible business conduct, has not changed.
For organisations, the task now is less about tracking a moving legislative target and more about applying the settled rules to their own circumstances properly: checking thresholds carefully, adjusting resourcing and governance to match, and deciding deliberately which sustainability capabilities are still worth investing in regardless of what the law strictly requires. Organisations that take that approach, building flexible ESG governance, reliable data systems and robust reporting processes, will be better placed not just for today's rules but for whatever comes next.