The European Union is pressing ahead with negotiations to widen the scope of its Carbon Border Adjustment Mechanism (CBAM), with a focus on bringing more manufactured goods into carbon-related obligations. The discussions could move CBAM beyond primary steel and aluminium and into industrial supply chains where components are assembled outside the EU. For European buyers, that shift would change how carbon pricing connects to procurement decisions and cost calculations.
Institutional positions are already taking shape ahead of a potential start date. The European Commission tabled a proposal on 17 December 2025 that would add 180 downstream products containing significant steel or aluminium content to CBAM from 1 January 2028. The Council agreed its negotiating position on 12 June 2026, adjusting the product scope and strengthening anti-circumvention provisions, while the European Parliament adopted amendments on 15 September 2026 by 464 votes to 50 with 159 abstentions.
Parliament’s stance envisages an expanded list reaching up to 457 product categories, but the figures reflect the positions of EU institutions during negotiations rather than a final enacted outcome. Negotiators are therefore still determining which categories will be covered and how obligations will be applied in practice. The timeline for when new requirements begin remains linked to the final legislative package.
The policy rationale centres on a gap in the current design of CBAM. Existing rules cover specified imports of steel and aluminium, yet finished products manufactured outside the EU using those materials can enter without an equivalent obligation attached to the finished goods. The Commission argues this can create incentives for manufacturing activity to shift abroad to avoid carbon-related costs instead of reducing emissions.
According to the Commission, roughly 94% of the products proposed for inclusion are tied to industrial value chains. The list includes items such as mountings, cylinders, industrial radiators and specialist machinery, while the remaining share covers selected household goods. If adopted, the expansion would extend carbon-cost considerations deeper into manufacturing and procurement choices across European supply chains.
That extension is expected to affect how importers assess emissions not only from final product manufacture but also from embedded precursor materials, depending on how the final rules are written. A component sourced from a third-country manufacturer may incorporate steel produced elsewhere, meaning exposure cannot be evaluated solely by looking at the finished item. Importers would need to determine the applicable product classification, trace relevant production steps and identify emissions attributable to covered inputs under the eventual accounting approach.
China and Türkiye are highlighted as particularly exposed due to their roles in fabricated metals, machinery components and supply chains serving European industry. Extending CBAM to downstream goods could alter delivered costs for products supplied from these markets into the EU. However, it would not automatically remove any existing price advantages those suppliers may have in current trade conditions.
The size and direction of any cost change would depend on several variables that remain under negotiation: the final product scope, applicable origin rules and the proportion of covered materials contained in specific goods. Even products that look similar could receive different treatment if their classifications or material composition differ under the final legislation. For manufacturers and importers, this increases reliance on product-level analysis rather than broad assumptions based on appearance or country of origin alone.
Alongside coverage questions, lawmakers are also addressing compliance risks tied to data quality and supply-chain behaviour. The proposals include measures aimed at resource shuffling, potentially misleading emissions data and pre-consumer metal scrap. These provisions could influence whether reported production figures are accepted and would raise the importance of documenting material provenance throughout supply chains.
The anti-circumvention elements are intended to ensure that CBAM reflects emissions associated with covered goods and materials rather than fragmented reporting or diverted inputs. Their practical implications will depend on which provisions survive into the final legislation and what accounting requirements apply once downstream coverage is expanded. As a result, companies face uncertainty over both documentation expectations and how embedded emissions will be handled.
The downstream CBAM proposal is also distinct from another trade measure affecting steel flows into the EU. A separate EU steel quota measure entered into application in July 2026, restricting tariff-free steel import volumes and imposing a 50% out-of-quota duty. The quota regime targets different aspects of import costs than CBAM expansion and is not interchangeable with carbon border obligations.
For importers of manufactured metal products, preparations are already being framed around multiple possible legislative outcomes rather than assuming any single negotiated list becomes law unchanged. A practical first step described in discussions is building a product-level inventory covering current and proposed Combined Nomenclature (CN) classifications, identifying suppliers and precursor materials, and modelling potential liabilities under several plausible scenarios for how coverage could be finalised.
Procurement arrangements may also need adjustments to preserve access to production-site data and clarify how parties would allocate costs linked to regulatory changes. Such contract-level planning would be aimed at enabling responses once details emerge on which products are covered, when obligations begin and how embedded emissions are accounted for under the expanded scope.
In analytical terms, the negotiations point to a shift in CBAM’s reach from primary commodities toward manufactured goods embedded in industrial supply chains serving Europe’s downstream sectors. The key determinants remain unresolved: which categories will be included up to an envisaged maximum of 457 product categories, whether obligations start on 1 January 2028 as proposed by the Commission, and how embedded precursor emissions will be quantified alongside anti-circumvention controls. What is clear from current institutional positions is that compliance work will move further upstream in procurement decisions as carbon pricing becomes linked to both finished goods classification and traced input emissions.