CSRD Compliance for US Companies With European Operations

A US-based technology company with a German subsidiary, a logistics firm with warehouses in three EU countries, a consumer goods manufacturer that sells through European retail chains — each of these companies may be subject to CSRD disclosure requirements without their legal and sustainability teams fully realizing it yet. The Corporate Sustainability Reporting Directive is not just a European problem. It is a problem for any US company with a meaningful European footprint.

Who Is Actually In Scope

CSRD extends beyond EU-domiciled companies through two mechanisms. The first is subsidiary scope: any large EU subsidiary of a non-EU parent company is directly subject to CSRD if it qualifies as a large undertaking under EU accounting law (meeting two of three criteria: more than 250 employees, more than EUR 40 million in net turnover, or more than EUR 20 million in total assets). That subsidiary must produce a standalone CSRD-compliant sustainability report, or the parent must consolidate CSRD reporting at group level.

The second mechanism is the third-country undertaking provision. Non-EU companies — including US companies — that generate more than EUR 150 million in EU revenue for two consecutive years and have at least one large EU subsidiary or EU branch with turnover exceeding EUR 40 million are required to report under CSRD at the consolidated group level. This provision triggers reporting starting for financial year 2028 (with the first reports due in 2029), but the data collection and infrastructure requirements need to be in place well before then.

The OMNIBUS package proposed by the European Commission in early 2025 includes some threshold adjustments and scope modifications for CSRD, but as of early 2026, the legislative process is ongoing and the core requirements for large companies remain substantively intact. Companies should plan based on current text, not on proposed amendments that have not yet been finalized.

What CSRD Requires That Is Different From Voluntary ESG Reporting

Most US companies have some form of voluntary sustainability reporting — a CDP submission, a GRI-aligned sustainability report, a TCFD disclosure. CSRD is different in ways that matter.

First, it requires reporting against the European Sustainability Reporting Standards (ESRS), a detailed set of standards developed by the European Financial Reporting Advisory Group (EFRAG). The ESRS are more prescriptive than GRI or TCFD — they specify not just what topics must be addressed but what specific data points must be disclosed and how they must be calculated. Climate disclosures under ESRS E1 require scope-defined GHG reporting, climate scenario analysis, and transition plan disclosure that goes significantly beyond what most voluntary reporters currently provide.

Second, double materiality is mandatory. Traditional financial reporting uses a single materiality lens: is this information material to investors? CSRD requires assessment from both directions. Impact materiality asks: does this company's activity have significant positive or negative impacts on people or the environment? Financial materiality asks: do sustainability matters create financial risks or opportunities for the company? You must assess both, document your methodology, and disclose material topics identified from each perspective. Companies that have only done investor-facing materiality assessments need to rebuild their methodology from scratch.

Third, CSRD reports must be assured. Starting with limited assurance (similar to what the SEC rule requires), moving to reasonable assurance over time. The assurance requirement is not optional and applies to the full ESRS disclosure set, not just the GHG numbers.

Common Gaps for US Companies

When US companies go through a CSRD readiness assessment, several gaps appear consistently. GHG data quality is the most common: many companies have sufficient Scope 1 and 2 data but inadequate Scope 3 coverage, particularly for purchased goods and services (Category 1), use of sold products (Category 11), and upstream transportation (Category 4). ESRS E1 requires comprehensive Scope 3 reporting with clear methodology documentation.

The double materiality assessment is often absent entirely. US companies that have done stakeholder materiality assessments for GRI have usually focused on reputational and financial materiality, not impact materiality. Building a CSRD-compliant double materiality assessment requires stakeholder engagement, impact mapping, and documentation that most sustainability teams have not previously done.

Social and governance disclosures are frequently underdeveloped. CSRD covers not just climate (ESRS E1) but also biodiversity (E4), water (E3), workforce topics (S1), value chain workers (S2), affected communities (S3), consumers (S4), and business conduct (G1). US companies whose ESG programs are heavily climate-focused often have significant gaps on the S and G standards.

Building Toward Compliance

A realistic CSRD readiness timeline for a mid-size US company with EU subsidiaries runs 18 to 24 months from start to first compliant report. The first step is determining which entities are in scope and understanding your reporting boundary obligations — this may require legal analysis across multiple EU jurisdictions. The second step is a gap assessment against the full ESRS framework. The third step is building the data collection infrastructure for in-scope entities. The fourth step is assurance readiness, which requires engaging a third-party assurance provider well before the report is due.

One practical note: ESRS E1 and E2 have more data points in common with what good CDP and GHG Protocol reporters already collect than some assessments suggest. If you have invested in robust climate reporting infrastructure, you are not starting from zero. But the double materiality requirement, the ESRS-specific disclosures, and the assurance standard are genuinely new work for virtually every US company.