European manufacturers are reassessing procurement strategies and production investments as proposed changes to the Carbon Border Adjustment Mechanism (CBAM) could extend carbon-cost requirements to additional steel- and aluminium-intensive goods. The potential expansion could affect how companies compare the cost of domestic materials, imported components, and production located outside the European Union.
The legislative process is ongoing. On 15 September 2026, the European Parliament adopted amendments and referred the file for interinstitutional negotiations after the Council agreed on its position in June 2026. The negotiating positions do not indicate that every proposed downstream product is already covered by CBAM.
Parliament amendments and ongoing negotiations on downstream scope
The European Commission’s original proposal identified 180 downstream products. It focused on goods containing significant amounts of steel and aluminium that could be exposed to carbon leakage. Legislative institutions have proposed changes to the scope, leaving manufacturers to track the final product list, customs classifications, and application dates.
Manufacturers distinguish between proposed and applicable requirements when planning purchases. Carbon costs on basic metals can influence buyers’ sourcing decisions for finished goods containing those materials from outside the EU. Extending CBAM coverage to selected downstream products could change that incentive while expanding emissions-data requirements across industrial supply chains.
Existing CBAM coverage versus potential obligations for finished components
Companies are expected to separate current compliance exposure from possible future obligations. Purchasing steel that is already covered by CBAM can affect procurement costs under the current framework. Importing a finished component that appears only in a proposed product list does not create an existing certificate obligation for that finished product solely because it contains steel or aluminium.
The distinction matters for investment planning as well. The possible expansion is relevant to decisions about whether to invest in European assembly capacity or continue importing components. A company evaluating a new production line may compare locally sourced components with finished or semi-finished goods purchased abroad under different carbon-cost scenarios.
Investment models and scenario-based cost estimates
Until legislation is finalised, investment models need to differentiate between applicable rules and alternative scenarios under negotiation. Companies are advised not to treat the proposed expansion as an immediate charge across all products that could eventually fall within scope. This approach affects how sourcing options are modelled during capital expenditure planning.
An illustrative contract using 10,000 tonnes of relevant steel annually highlights potential exposure. If future applicable CBAM treatment resulted in an additional cost of €40 per tonne, the gross annual amount would reach €400,000, before other adjustments. The €40-per-tonne figure is a scenario assumption rather than a current statutory rate or a forecast of the final methodology for downstream goods.
Commercial agreements on who absorbs additional carbon costs
The allocation of any future cost depends partly on commercial agreements between manufacturers and customers. Under a long-term fixed-price contract, a producer selling components may have to absorb additional regulatory expense if price adjustments are not permitted. Where contracts allow changes linked to regulation, some or all of the cost may be passed on to customers.
Large buyers may also seek supplier absorption of part of any increase as a condition for retaining orders. These arrangements could affect supplier margins even where the underlying manufacturing process and physical product remain unchanged. The outcome depends on contract terms, renegotiation capacity, and how the final legislation treats costs.
Emissions-data needs across complex supply chains
If CBAM extends to finished components, manufacturers would need emissions information across more complex production chains. A component supplier may buy multiple grades of steel or aluminium from different installations, while an EU customer imports a finished assembly incorporating those materials. The emissions information must follow the methodology applicable to the final covered good and its inputs.
A supplier’s corporate sustainability report may not provide enough product-specific detail to establish required figures. For exporters in Serbia, Türkiye and other manufacturing locations serving EU customers, preparations can support commercial negotiations before any expansion takes effect. Product classification, bills of materials, and precursor traceability can help identify potentially affected goods and respond to customer information requests under existing contracts.
Sourcing exposure, inventory timing, and investor considerations
Information quality is relevant both for future compliance planning and for current supplier relationships. Manufacturers unable to trace materials used in individual products may find it more difficult to assess potential exposure or substantiate information requested by European buyers. Equity investors are also expected to consider sourcing arrangements alongside production locations.
Businesses importing large volumes of components that could become covered under an expanded CBAM framework may face different exposure than companies purchasing metal domestically. Inventory accumulated before a regulatory change could create temporary commercial advantages or valuation risks depending on when rules apply and when goods are sold. Timing of purchases, applicable product classification, and treatment of existing stock would influence outcomes.
The final scope will determine how costs are distributed across European processors and manufacturers reliant on imported components. Broader coverage could strengthen some EU-based processors’ competitive position while increasing costs for businesses dependent on foreign-sourced parts. As negotiations continue, manufacturers are expected to keep current liabilities separate from possible future costs when evaluating sourcing options, contractual exposure, and capital expenditure.