Sustainability Rules in the European Union are becoming more targeted in 2026, but U.S. companies with European operations, customers or supply chains may still face reporting and data requirements. Changes to corporate reporting, due diligence and carbon-border measures mean businesses need to distinguish between direct obligations and requests flowing through commercial relationships.
Key Takeaways
- The EU raised the main Corporate Sustainability Reporting Directive threshold to more than 1,000 employees and above €450 million in annual net turnover.
- The European Commission adopted revised sustainability reporting standards on July 3, 2026, cutting mandatory datapoints by more than 60%.
- Corporate due diligence requirements were narrowed to companies exceeding 5,000 employees and €1.5 billion in net turnover.
- The EU Carbon Border Adjustment Mechanism entered its definitive phase on January 1, 2026.
- U.S. producers of covered goods may be asked for verified emissions data when European importers use actual emissions figures.
The European Union has narrowed several Sustainability Rules that had been expected to affect a broader range of companies, but the changes have not removed compliance considerations for U.S. businesses connected to the European market.
On February 24, 2026, the Council of the European Union gave final approval to changes that reduced the scope of both the Corporate Sustainability Reporting Directive, or CSRD, and the Corporate Sustainability Due Diligence Directive, commonly called CS3D. The revisions were designed in part to reduce reporting burdens and limit the extent to which information requirements pass to smaller companies.
For U.S. companies, the result is a more segmented compliance picture. Some businesses may now fall outside direct reporting requirements, while others may encounter sustainability-related obligations through European subsidiaries, branches, importers or customers.
Higher Thresholds Narrow the Sustainability Rules Reporting Net
The revised CSRD framework raises its primary thresholds to companies with more than 1,000 employees and net annual turnover above €450 million. Those limits significantly narrow the group of businesses subject to mandatory reporting compared with the earlier framework.
The rules also contain separate thresholds for companies based outside the EU. According to the Council, updated requirements for third-country businesses apply at a net EU turnover threshold above €450 million, together with turnover above €200 million for the relevant EU subsidiary or branch.
That distinction matters for large U.S. corporate groups because compliance depends on more than the location of the parent company. European revenue, workforce levels and the size of EU subsidiaries or branches can determine whether reporting requirements apply.
The changes also provide a transition exemption for certain companies that began reporting for the 2024 financial year but no longer fall within the revised scope for 2025 and 2026. The broader shift follows earlier EU reporting changes that reduced the population expected to remain under mandatory sustainability reporting.
For U.S. firms near the thresholds, the immediate compliance task is therefore a scope analysis rather than an assumption that every company doing business in Europe faces the same reporting obligations.
Revised Standards Reduce Reporting Demands
A second major change arrived on July 3, 2026, when the European Commission adopted revised European Sustainability Reporting Standards, known as ESRS, along with a voluntary reporting standard for smaller companies.
The Commission said the revised ESRS reduce mandatory datapoints by more than 60% and total datapoints by more than 70%. It also estimated that the revisions could lower reporting costs by more than 30% per company for businesses remaining within the mandatory framework.
The standards had not yet completed their scrutiny process as of mid-August. The Commission said the measures would apply after a two-month European Parliament and Council scrutiny period, which can be extended by another two months.
For smaller U.S. suppliers, another provision may be particularly relevant. The voluntary reporting standard supports a value-chain cap intended to restrict how much sustainability information companies subject to the CSRD can require from smaller businesses in their supply chains.
Companies outside the direct scope can still receive sustainability data requests from customers or financial institutions. Existing approaches to sustainability reporting compliance illustrate why finance, legal, operational and data teams may still need coordinated processes even when a business is not directly covered by an EU reporting mandate.
The revised framework, however, creates clearer limits on the information that can be required from businesses protected by the value-chain cap.
Due Diligence Rules Shift Toward Larger Companies
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The EU also substantially narrowed its corporate sustainability due diligence framework.
Under the revised CS3D scope, the principal thresholds rise to companies with more than 5,000 employees and net turnover above €1.5 billion. The Council said the change was designed to focus requirements on the largest businesses, which have greater influence across their chains of activity.
The amended framework allows covered companies to focus their assessments on areas where adverse environmental or human-rights impacts are most likely to occur. It also directs companies toward reasonably available information, reducing some of the pressure to collect extensive information from smaller business partners.
The timetable has also moved. EU member states have until July 26, 2028, to transpose the revised requirements into national law, and companies are expected to comply with the new measures from July 2029.
For U.S. businesses, that means CS3D is less likely to create a direct near-term requirement unless a company reaches the revised size and EU turnover thresholds. Suppliers and other business partners may still encounter targeted information requests from companies that remain covered.
Carbon Border Rules Put Supplier Data in Focus
While corporate reporting and due diligence requirements have been narrowed or delayed, the EU Carbon Border Adjustment Mechanism, or CBAM, is already operating under its definitive regime.
CBAM took effect in its definitive phase on January 1, 2026. It applies to selected goods in carbon-intensive sectors including cement, iron and steel, aluminium, fertilisers, electricity and hydrogen.
EU importers or their indirect customs representatives bringing in more than the general 50-tonne annual threshold of covered goods are required to apply for authorised CBAM declarant status. The threshold rules contain separate treatment for electricity and hydrogen.
The direct legal responsibility generally rests with the European importer or its representative, but U.S. producers can become part of the compliance process. When an importer reports actual emissions rather than using Commission default values, the producer outside the EU must provide verified information on the emissions embedded in the goods.
The first annual CBAM declaration covering 2026 imports is due by September 30, 2027. Importers must also surrender the corresponding CBAM certificates by that date.
That makes production and emissions records relevant well before the filing deadline for U.S. manufacturers supplying covered products to European customers. Operations, customs, finance and compliance teams may need consistent data even when the U.S. company itself is not the regulated importer.
The broader effect of the 2026 Sustainability Rules is therefore more precise than a simple expansion or rollback. Fewer companies face direct CSRD and CS3D requirements, while CBAM has moved into active implementation. For U.S. firms, identifying the relevant entity, threshold, commercial relationship and compliance date remains central to determining what information must be prepared.
Frequently Asked Questions
What changed in the EU Sustainability Rules in 2026?
The EU raised the main thresholds for sustainability reporting and corporate due diligence, removing many smaller companies from direct scope. The European Commission also adopted streamlined reporting standards intended to reduce the amount of information required from covered businesses.
Do the Sustainability Rules apply directly to U.S. companies?
They can, depending on a U.S. company’s EU turnover, workforce and European subsidiary or branch structure. Companies outside direct scope may also receive information requests from European customers or other covered business partners.
What is the new CSRD threshold?
The revised main threshold covers companies with more than 1,000 employees and annual net turnover above €450 million. Separate EU turnover and subsidiary or branch thresholds apply to qualifying businesses headquartered outside the EU.
When do the revised due diligence rules apply?
EU member states have until July 26, 2028, to transpose the revised CS3D provisions into national law. Companies are expected to comply with the new measures from July 2029.
How can CBAM affect U.S. manufacturers?
The main CBAM duties fall on EU importers or their indirect customs representatives. U.S. producers of covered goods may still need to supply verified embedded-emissions information when European importers choose to use actual emissions values.
