Pre-consumer scrap has become a significant topic in negotiations on strengthening the EU Carbon Border Adjustment Mechanism (CBAM) for steel and aluminium. The central issue under discussion is how to attribute embedded carbon to material returned to production before it reaches the end user. The debate also addresses how to recognise recycling without enabling emissions to be shifted between products or countries.
The European Commission has put forward a downstream expansion proposal, followed by positions adopted by the Council and the European Parliament. These developments address scrap more explicitly than the original CBAM framework. Lawmakers are seeking a more consistent approach for pre-consumer material while adding safeguards against circumvention. The final methodology, however, remains unsettled, with the proposed changes described as a planning signal rather than a rule for 2026 calculations.
How scrap classification can change aluminium carbon reporting
For aluminium remelters, the eventual treatment of scrap could affect both the reported carbon advantage of recycled metal and the information required from suppliers. Pre-consumer scrap may come from closely controlled manufacturing chains, while post-consumer scrap can have different collection history, origin and traceability profiles. Under future CBAM accounting requirements, treating all scrap as a single undifferentiated category may be insufficient.
To prepare for potential changes, companies are expected to improve material categorisation, supplier identification, mass-balance records, origin documentation and storage records. The stated objective is not to introduce emissions factors before legislation establishes them. Instead, firms aim to retain enough reliable information to apply the eventual methodology when it is finalised. Improved traceability is also linked to quality assurance, circularity claims and responsible-sourcing requirements.
If the final framework recognises recycled inputs more clearly, secondary aluminium could become more competitive as CBAM requirements expand. At the same time, additional documentation obligations could raise costs for informal or fragmented scrap supply chains. Recyclers that can provide suitable material alongside auditable supporting data may be better positioned within EU-oriented supply chains.
Accounting risks from subcontracted processing and scrap flows
Outsourced transformation creates a related accounting risk under CBAM logic for in-scope processes. Where an in-scope process is carried out by another company and the product returns to the principal operator, associated emissions cannot simply be omitted from calculations. Contracts are expected to establish access to relevant production data and cooperation with audits.
The principal operator is also expected to maintain a consolidated map of the production route. This is particularly relevant for aluminium processors that subcontract heat treatment, coating or other specialised operations. A similar traceability requirement applies to scrap flows, where companies must connect received material with its origin, processing history and subsequent use.
Fragmented records across suppliers, subcontractors and production sites can make it harder to substantiate the treatment ultimately applied. This affects both how companies document processing routes and how they demonstrate links between material received and its later use in production.
Data readiness ahead of downstream expansion in 2028
The prospect of downstream expansion in 2028 gives precursor data practical value before final rules are settled. A processor that already identifies precursor installations, material quantities and product classifications can assess potential exposure more quickly if its finished goods enter CBAM scope. Companies without those records may face higher implementation costs and greater reliance on default values.
South-East Europe has established metal-recycling flows and a manufacturing base that generates industrial scrap. Better documentation could help position this material as a more valuable feedstock for lower-carbon aluminium products. Conversely, weak provenance records could limit access to customers requiring verifiable information and leave some material competing in lower-value markets.
Remelters and recyclers are encouraged to develop a scrap-data taxonomy and test whether suppliers can populate it consistently. Commercial agreements can require information on provenance, material category and quantities without assuming what the final emissions formula will be. This approach is intended to preserve flexibility while legislative processes continue.
Separating 2026 compliance from proposed CBAM reform
For aluminium remelters, recyclers, scrap traders, processors and policymakers, the key requirement is distinguishing rules governing 2026 imports from proposed changes under discussion. The Commission proposal and positions from the Council and Parliament can inform scenario analysis and contract preparation. They should not be treated as operative requirements before relevant amending legislation takes effect.
A two-scenario model—one based on current law and another on a plausible reform scenario—can support management preparation of data and optional contractual provisions. This structure is intended to avoid basing current compliance declarations on legislation that remains under negotiation.
The implementation test is whether a company can explain its calculation to both a verifier and a commercial manager using the same underlying records. CBAM documentation should connect purchasing, production, customs and finance rather than operate as a separate reporting exercise. Routine operational data, controlled assumptions and documented fallback methods are described as ways to reflect changes in suppliers, processing routes, prices or legal requirements without rebuilding calculations from scratch.
Building an auditable decision file before transactions are finalised
A practical test highlighted in discussions is whether assessment occurs before the relevant transaction or reporting period is finalised. A minimum decision file should link precursor route details, product classification, material flows and verified installation data while identifying who approves each assumption. It should also specify fallback treatment where preferred approaches cannot be substantiated.
A fallback may lead to less commercially favourable outcomes, but defining it in advance reduces the risk of discovering exposure only after challenges by a verifier, customs authority or authorised CBAM declarant. As financial implications increase over time, evidence gaps identified late are described as risks for recurring costs.
The same documentation discipline can support later price adjustments, verification changes and management reporting. Integrating evidence into normal business processes is also described as helping ensure consistency across procurement, production and compliance teams.
Scrap issues are described as moving beyond being treated only as a recycling statistic toward becoming an explicitly regulated carbon input under CBAM discussions. Companies that can establish what material they hold, where it originated and how it was used are positioned to prepare for subsequent phases of CBAM implementation.