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EU Taxonomy Regulation

Complete guide to the EU Taxonomy for sustainable activities — classification criteria, technical screening criteria, DNSH requirements, and reporting obligations.

Last updated: · 4 min read

Status, September 2026: A simplifying delegated act applies from January 1, 2026 (covering financial year 2025 reports): activities that together make up less than 10% of turnover, capex, or opex no longer need a detailed alignment assessment. Taxonomy reporting applies to companies within CSRD scope, so the Omnibus I scope cut also narrows who reports. Source: Linklaters.

What Is the EU Taxonomy?

The EU Taxonomy Regulation (2020/852) establishes a unified classification system for environmentally sustainable economic activities across the European Union. It provides technical criteria that determine whether a specific economic activity can be classified as 'green' — creating a common language for sustainable finance and corporate disclosure.

The Taxonomy is a cornerstone of the EU's sustainable finance framework, designed to direct capital toward genuinely sustainable activities and combat greenwashing.

Who It Applies To

  • CSRD-reporting companies: Must disclose Taxonomy eligibility and alignment of revenue, capital expenditure, and operating expenditure. After the Omnibus I amendments, CSRD (and so this duty) covers companies with more than 1,000 employees and more than €450 million in net turnover from financial year 2027
  • Financial market participants: Must disclose Taxonomy alignment of financial products under SFDR
  • The EU and member states: Must apply the Taxonomy criteria in any public measures, standards, or labels for financial products or corporate bonds marketed as environmentally sustainable
  • Banks in CSRD scope: Must report the Green Asset Ratio (GAR) showing Taxonomy-aligned activities in their portfolios

Key Requirements

Four-step assessment:

  1. Taxonomy eligibility: Is your economic activity described in the Taxonomy? Not all activities are covered — only those with significant potential for environmental contribution.

  2. Substantial contribution: Does the activity meet the Technical Screening Criteria (TSC) for at least one environmental objective? For example, electricity generation from geothermal energy must have lifecycle emissions below 100g CO2e/kWh, while solar PV generation qualifies without an emissions threshold.

  3. Do No Significant Harm (DNSH): Does the activity avoid significant harm to the other five environmental objectives? Each TSC includes specific DNSH criteria.

  4. Minimum safeguards: Does the company comply with OECD Guidelines, UN Guiding Principles on Business and Human Rights, ILO core conventions, and the International Bill of Human Rights?

Reporting metrics:

  • Taxonomy-eligible revenue, CapEx, and OpEx as a percentage of total
  • Taxonomy-aligned revenue, CapEx, and OpEx as a percentage of total
  • Breakdown by environmental objective

Since January 1, 2026 (financial year 2025 reports), activities that together make up less than 10% of turnover, capex, or opex no longer need a detailed alignment assessment, and the reporting templates are shorter.

The Six Environmental Objectives

  1. Climate change mitigation: Activities that reduce GHG emissions (renewable energy, energy efficiency, clean transport, green buildings)
  2. Climate change adaptation: Activities that reduce vulnerability to climate impacts (climate-resilient infrastructure, warning systems)
  3. Water and marine resources: Activities protecting aquatic ecosystems and water quality
  4. Circular economy: Activities minimizing waste and keeping materials in use
  5. Pollution prevention: Activities reducing pollution of air, water, and soil
  6. Biodiversity: Activities protecting and restoring ecosystems

Timeline

  • July 2020: Taxonomy Regulation entered into force
  • January 2022: Climate Delegated Act applied (objectives 1 & 2)
  • January 2024: Environmental Delegated Act applied (objectives 3-6)
  • January 2026: Simplifying delegated act (Delegated Regulation (EU) 2026/73) applies from financial year 2025 reports, adding the 10% materiality threshold; companies may defer it by one year
  • March 2026: Omnibus I enters into force, narrowing CSRD scope, and with it Taxonomy reporting, from financial year 2027
  • Ongoing: Technical screening criteria are periodically reviewed and updated

Compliance Steps

  1. Map economic activities: Identify which of your revenue-generating activities, CapEx, and OpEx are described in the Taxonomy
  2. Assess eligibility: Determine which mapped activities are Taxonomy-eligible
  3. Evaluate substantial contribution: Test eligible activities against Technical Screening Criteria for the relevant environmental objective
  4. Apply DNSH criteria: Verify that each substantially contributing activity does not significantly harm the other five objectives
  5. Verify minimum safeguards: Confirm compliance with human rights, anti-corruption, tax, and competition requirements
  6. Calculate KPIs: Compute Taxonomy-aligned percentages for revenue, CapEx, and OpEx
  7. Disclose in management report: Include Taxonomy reporting as part of CSRD sustainability statement

Penalties

Penalties follow CSRD enforcement mechanisms as Taxonomy reporting is embedded in CSRD disclosure. Additionally:

  • Misrepresentation of Taxonomy alignment could constitute greenwashing
  • Financial institutions face regulatory scrutiny from national supervisors
  • Investment funds claiming green credentials without proper Taxonomy assessment face SFDR enforcement

How Council Fire Can Help

Council Fire helps companies navigate the EU Taxonomy — from activity mapping and technical screening criteria assessment through DNSH analysis and KPI calculation. We make Taxonomy reporting practical and audit-ready. Contact us for EU Taxonomy support.

EU Taxonomy Regulation — sustainability in practice

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Frequently Asked Questions

The EU Taxonomy is a classification system that defines which economic activities are 'environmentally sustainable.' It provides technical screening criteria for activities that substantially contribute to one of six environmental objectives while doing no significant harm to the others. Companies subject to CSRD must report their Taxonomy-aligned revenue, CapEx, and OpEx.
The six objectives are: (1) Climate change mitigation, (2) Climate change adaptation, (3) Sustainable use and protection of water and marine resources, (4) Transition to a circular economy, (5) Pollution prevention and control, (6) Protection and restoration of biodiversity and ecosystems. Technical screening criteria have been adopted for all six.
Not directly, but EU subsidiaries of non-EU companies that fall within CSRD scope must include Taxonomy reporting. EU financial institutions must also report the Taxonomy alignment of their portfolios or products, which can create demand for Taxonomy data from companies they invest in or lend to, including non-EU companies.
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