On 17 December 2025, the European Commission published an amendment proposal (COM 2025/0419) to the Carbon Border Adjustment Mechanism (CBAM) Regulation (Regulation (EU) 2023/956), which proposes to expand CBAM to certain downstream goods and strengthen anti-circumvention provisions. The proposal also refines operational rules, including for electricity imports, exemptions, and market-stability safeguards. On the same day, the Commission published several implementing acts addressing issues such as default values, the price of CBAM certificates, methodologies for calculating embedded emissions, and verification principles. It also published a proposal to establish a so‑called “Temporary Decarbonisation Fund”.
This alert focuses on the key amendments included in the Commission’s proposal to amend the CBAM Regulation.
Extension of CBAM to downstream goods
The Commission proposes to extend CBAM beyond the current list of basic materials in Annex I (e.g., aluminium, cement, fertilisers, iron, and steel) to approximately 180 downstream products, with particular focus on steel‑ and aluminium‑intensive goods (see the full list of goods included in the proposal here). These include machinery, hardware and fabrications, vehicle components, domestic appliances, construction equipment, and certain scrap metal. The stated objective, reflected in the Commission’s press release and FAQs, is to address the risk that downstream producers facing higher input costs due to CBAM and the Emissions Trading System (ETS) will relocate to jurisdictions with less stringent environmental rules. This extension to new products is foreseen in Article 30(3) of the CBAM Regulation, which allows the Commission to identify products further down the value chain for potential inclusion.
As stated in the Commission’s FAQs, only emissions embedded in the input materials (precursors) used to make the downstream goods will be subject to CBAM, while emissions from downstream processing or assembly will not be taken into account. To illustrate how it would work in practice, the Commission gives the following example: car doors manufactured in a non-EU country would attract CBAM obligations (e.g., declaring emissions, surrendering CBAM certificates) for the emissions embedded in the steel plates used in their construction, but not for the fabrication of those plates into parts or their assembly. To operationalise this approach, the proposal introduces Article 7(2a) and an Annex VIII into the CBAM Regulation, listing precursors that must be taken into account for embedded emissions calculations. In addition, recognising the complexity of calculating embedded emissions in multi‑component goods, the amendment proposal allows for declaring the embedded emissions in downstream products according to default values.
To preserve market stability, a new Article 27a empowers the Commission, by delegated acts, to exempt the goods listed in Annex I from CBAM’s scope where their inclusion would risk causing severe harm to the Union internal market due to serious and unforeseen circumstances. In parallel, Article 2(11) would allow the Commission to adopt delegated acts under an urgency procedure to add non-EU countries or territories to the list of exempted countries in Annex III.
Reinforced anti‑circumvention framework
Building on the Steel and Metal Action Plan of 19 March 2025, the proposal strengthens CBAM’s anti‑circumvention tools. A new concept of “abusive practices” is introduced in Article 3(35), capturing conduct that seeks to gain a benefit by unduly avoiding, in whole or in part, CBAM financial liability.
Under proposed Article 6(6a), the Commission could require additional supporting documentation for CBAM declarations relating to the identification, combination, and origin of goods. Article 6(7) would allow the Commission to determine categories of products at high risk of abusive practices and to inform competent and customs authorities to intensify controls. In cases of indirect representation, the EORI number(s) of the importer(s) on whose behalf the CBAM declaration is made would need to be provided in the application to become an authorised CBAM declarant, enabling further transparency for the enforcement authorities. Article 7(5) would reinforce record‑keeping requirements, obliging authorised CBAM declarants to maintain records necessary to substantiate embedded emissions calculations.
The proposed amendment also introduces Article 27(2)(c), which brings the artificial adjustment of supply chains to secure lower default values for goods within the definition of a circumvention practice.
Other amendments
For electricity, the proposal introduces some changes to the method for calculating the emissions factor for imported electricity as of January 2026 and allows the Commission to integrate a third-party country into the EU electricity market, thereby exempting its imported electricity from CBAM and subjecting it to the ETS, pursuant to proposed Article 2(7a).
The proposal inserts Article 17(5a), allowing competent authorities to require a financial guarantee from an authorised CBAM declarant that cannot demonstrate adequate financial capacity to fulfil its CBAM financial obligations. The amount of the guarantee may correspond, for example, to the declarant’s estimated annual quantity of imports of CBAM goods.
Practical implications
If adopted as proposed, CBAM would extend to a materially broader set of downstream, steel‑ and aluminium‑intensive products, while limiting the chargeable emissions to those embedded in the specified precursors. Companies importing multi‑component goods should anticipate increased data‑collection demands, the need to substantiate precursor content and origin, and potential reliance on default values where calculation complexity warrants. Electricity importers should prepare for revised default factors from January 2026 and monitor developments relating to market integration‑based exemptions. Across sectors, the reinforced anti‑circumvention rules signal a stricter documentation and control environment, especially for high‑risk product categories and supply chains involving indirect representation.
Next steps
The Commission’s amendment proposal is presented to the European Parliament and the Council of the EU, composed of Member State representatives, for debate and a vote on its adoption.
