The European Union is negotiating an extension of the Carbon Border Adjustment Mechanism (CBAM) to cover steel and aluminium components, machinery and other manufactured goods. The changes are expected to influence procurement contracts, supplier selection and factory investment decisions ahead of the planned start date.
As of 12 October 2026, the expansion remains a legislative proposal. The European Commission has proposed applying the extended CBAM to additional downstream products from 1 January 2028. The Council adopted its negotiating position in June, and the European Parliament followed in September.
Commission proposal and import profile for additional product categories
The Commission’s original proposal identified 180 additional product categories. It estimated an average steel and aluminium content of 79% for the selected imports. The selected imports were estimated at about 15% of the volume of goods already covered by CBAM.
The same set of imports was estimated to account for 53% of the import value of goods already covered. The figures presented in the proposal indicate that the expansion would extend into higher-value manufacturing rather than only increasing coverage for basic metals. During the legislative process, the potential scope broadened.
An October notice from the Office of the United States Trade Representative described differences between negotiating positions. It said the Council’s position would add more than 300 products, while the Parliament’s position would add approximately 400. These figures were described as reflecting competing positions rather than a final list subject to CBAM.
Downstream coverage aimed at competitive conditions for finished goods
The proposed changes focus on a potential imbalance between European manufacturers and overseas producers of finished goods. EU companies using steel and aluminium that already face European carbon costs can encounter competition from imported finished products. In those cases, metal inputs could attract CBAM obligations if imported separately.
The downstream extension is intended to reduce incentives to move additional processing outside the EU solely to avoid carbon-related costs on covered metal inputs. For component suppliers, the proposal could affect purchasing decisions and shift how different production locations compare commercially. A lower factory-gate price may be offset by a higher assessed carbon liability or by costs related to rebuilding emissions evidence for product calculations.
European buyers may therefore seek longer-term supply agreements with manufacturers able to identify metal sources, trace relevant precursor materials and provide emissions data. Suppliers without adequate records could face increased uncertainty when customers compare offers or negotiate contract terms. These dynamics are linked to how emissions information would be used for product-level assessments under any expanded scope.
Timeline implications for capital expenditure and supplier qualification
Manufacturers evaluating capital expenditure are expected to separate existing CBAM obligations from potential exposure under the proposed downstream expansion. A factory producing goods outside the current scope would have a different immediate compliance position than a company already exporting covered products such as certain metal structures or fasteners.
The eventual downstream product list is not assumed to match the Commission’s original proposal. The final scope will depend on negotiations between EU institutions. However, the proposed 2028 implementation date creates commercial implications before any additional statutory charge takes effect.
Procurement contracts negotiated before 2028 may extend beyond that date. Qualifying new suppliers, establishing traceability procedures and building reliable emissions-data systems are described as requiring substantial preparation time. Companies are therefore expected to identify which products could enter the expanded scope and determine how much relevant steel and aluminium they contain.
Contract terms on emissions documentation and future CBAM-related costs
The final negotiations will define the legal perimeter of any expanded mechanism, but companies entering multi-year supply agreements face practical questions about cost allocation if products become covered. Contracts can address responsibility for emissions documentation, supplier cooperation, data corrections and allocation of future CBAM-related costs.
For component manufacturers, demonstrating the origin and emissions characteristics of metal inputs could become part of supplier qualification. While the expansion is not yet law, its potential reach is already influencing how companies approach procurement, investment decisions and long-term pricing risks.