Short answer
The EU taxonomy principally classifies economic activities, not whole companies, products or investments. An activity is taxonomy-aligned only if four cumulative conditions are met: it substantially contributes to at least one of six environmental objectives; does no significant harm to the others; is carried out in compliance with minimum safeguards; and meets the technical screening criteria applicable to that precise activity.
Being listed in a delegated act makes an activity eligible, not aligned. Evidence must establish every applicable condition for the reporting period. Companies and financial products disclose aligned proportions rather than receiving an unrestricted “green” label.
A wrong classification normally requires correction of the affected assessment, disclosure, key performance indicator or marketing claim. Depending on the use and fault, it can also prompt supervisory measures, national penalties, investor or consumer claims, contractual consequences, or recovery of funding. Regulation 2020/852 itself requires effective, proportionate and dissuasive penalties for breaches of its financial-product disclosure rules. It does not, by itself, invalidate the underlying investment or prohibit the economic activity.
The unit of classification is the economic activity
The taxonomy is a classification framework, not a general approval system for a product, project or company. A company may operate aligned, eligible but non-aligned, and unlisted activities. A product associated with an aligned activity does not make its producer sustainable as a whole.
This distinction prevents three common errors:
- taxonomy-eligible means that the activity is described by relevant technical criteria;
- taxonomy-aligned means that the activity actually satisfies all Article 3 conditions; and
- an aligned proportion is the calculated share of a company, asset pool or financial product attributable to aligned activities under the applicable disclosure methodology.
Four cumulative conditions control alignment
Article 3 of Regulation (EU) 2020/852 states the complete legal test. An economic activity qualifies only where it:
“contributes substantially” to an environmental objective, “does not significantly harm” the other objectives, complies with minimum safeguards, and complies with the applicable technical screening criteria. —
The limbs are cumulative. An emissions threshold cannot cure significant harm to water or biodiversity, replace minimum safeguards, or substitute for activity-level evidence.
The six objectives in Article 9 are climate-change mitigation; climate-change adaptation; sustainable use and protection of water and marine resources; transition to a circular economy; pollution prevention and control; and protection and restoration of biodiversity and ecosystems.
Articles 10–16 cover direct contribution, certain enabling activities and defined climate transitional activities. These are legal categories, not permission to call any improving activity sustainable.
“Do no significant harm” is assessed under Article 17 and the delegated criteria. The relevant harms differ by objective and must be evaluated over the activity's life cycle where required. The applicable technical criteria are found principally in Delegated Regulation 2021/2139 for climate objectives and Delegated Regulation 2023/2486 for the other four objectives, as amended. Delegated Regulation 2023/2485 added further climate criteria, including transport activities.
Minimum safeguards are a separate requirement
Article 18 requires procedures to align the undertaking's conduct with the OECD Guidelines for Multinational Enterprises and the UN Guiding Principles on Business and Human Rights, including specified ILO principles and rights and the International Bill of Human Rights.
Minimum safeguards are “procedures implemented by an undertaking” to ensure alignment with those international standards. —
Engineering performance alone is insufficient. The undertaking needs appropriate procedures, and material conduct failures may affect the safeguards assessment under the applicable framework and evidence.
Apply the exact delegated criterion and date
Technical screening criteria are activity-specific. Identify the activity, objective, substantial-contribution test, significant-harm conditions, evidence period and any incorporated thresholds or standards.
Nuclear-energy and fossil-gas activities illustrate why labels are unsafe shortcuts. Delegated Regulation 2022/1214 added specified activities under strict conditions; it did not declare all nuclear or gas investment sustainable. In Austria v Commission, T-625/22, the General Court dismissed Austria's challenge to that delegated regulation and accepted that the Commission could treat certain activities as substantially contributing under the statutory categories and conditions. The judgment is under appeal in Case C-739/25 P, so it should not be presented as the final word of the Court of Justice.
Two 2026 judgments further show that delegated criteria are reviewable. In Robin Wood v Commission, T-575/22, the General Court dismissed an action concerning forest-management and forest-bioenergy criteria. In Dassault Aviation v Commission, T-77/24, it annulled Section 3.21 on aircraft manufacturing, inserted by Regulation 2023/2485, after finding a manifest error in excluding business-aircraft manufacturing from the transitional-activity criterion. The latter judgment was issued on 24 June 2026 as provisional text; its appeal status and the legally applicable text should be checked before relying on that section.
These judgments address the validity of delegated criteria. They do not prove that a particular plant, aircraft activity or investment satisfies every alignment condition.
What companies and financial products disclose
Article 8 requires undertakings within the applicable corporate-reporting scope to explain how and to what extent their activities are associated with aligned economic activities. Non-financial undertakings calculate proportions of turnover, capital expenditure and operating expenditure under Delegated Regulation 2021/2178.
Undertakings disclose the proportion of turnover from aligned products or services and the proportions of capital and operating expenditure related to aligned assets or processes. —
Delegated Regulation 2026/73 simplified these disclosures from 1 January 2026. Among other changes, it permits specified 10% materiality omissions and alters templates and certain significant-harm criteria. For a financial year beginning in 2025, an undertaking may instead apply the delegated rules as they stood on 31 December 2025. That reporting option must not be confused with a new substantive power to label a non-aligned activity sustainable.
Financial products covered by Articles 5–7 and the Sustainable Finance Disclosure Regulation disclose the relevant objectives and aligned proportion under the applicable methodology. The basis and data limitations must be clear, including whether a figure concerns eligibility or alignment.
What follows from an incorrect classification?
The consequence depends on where the classification was used.
Corporate reporting. An incorrect activity mapping, threshold assessment or KPI may require correction or restatement under the applicable accounting and sustainability-reporting regime. Auditors or assurance providers may qualify their work, and the competent authority may investigate.
Financial-product disclosure. Articles 5–7 require accurate taxonomy information for covered products. Article 22 provides:
“The measures and penalties provided for shall be effective, proportionate and dissuasive.” —
The detailed offence, authority and sanction come from national law and the connected financial-services regime. Supervisory directions, corrected disclosures, administrative penalties and product-governance consequences may follow.
Marketing and consumer claims. Calling a product “taxonomy-aligned”, “EU sustainable” or “green” on an unsupported basis may be a misleading commercial practice. The assessment depends on the exact claim, evidence, audience and national enforcement of EU consumer law. Removing or qualifying the claim, consumer remedies and penalties may be possible.
Contracts and public funding. If alignment was a warranty, eligibility condition, financing covenant or award criterion, misclassification can trigger contractual remedies, exclusion, repayment or funding recovery. Those effects arise from the governing instrument or contract, not automatically from Article 3.
Civil liability. Investors or counterparties may pursue available national remedies where an inaccurate statement caused loss and the relevant elements are proved. The taxonomy does not create an automatic damages award for every mistaken assessment.
Invalid delegated criterion. If a court annuls the criterion itself, as in Dassault Aviation, assessments and disclosures relying on it must be reconsidered against the law then applicable. The judgment's temporal effect and any appeal must be checked; annulment is different from an operator applying a valid criterion incorrectly.
A defensible classification file
- Identify the precise economic activity rather than the company or product generally.
- State the delegated-act version and reporting-period option used.
- Separate eligibility from alignment.
- Map evidence to substantial contribution, every significant-harm test, minimum safeguards and technical criteria.
- Record calculations, estimates, data gaps and allocation methodology.
- Check whether enabling, transitional, gas or nuclear conditions apply.
- Reconcile activity conclusions with company KPIs and product disclosures.
- Review public claims so they do not exceed the measured aligned proportion.
- Reassess when the activity, evidence or delegated criteria change.
Conclusion
EU taxonomy alignment is a four-part, activity-level assessment. Listing is only the beginning. A wrong classification calls first for correction of the evidence, calculation, disclosure and claim; further consequences depend on its use and the connected EU and national rules.
Sources
This article provides general legal information, not advice for a specific matter. Laws, facts and procedural deadlines may change the result. Follow the linked primary sources and obtain local advice before acting.