EU customs clearance in 2026 brings aluminium produced in 2025 within the definitive CBAM regime, limiting the effectiveness of year-end stockpiling strategies.
Customs Release Determines CBAM Treatment
The European Commission’s latest guidance clarifies that aluminium produced in 2025 but released for free circulation in the European Union during 2026 is subject to the Carbon Border Adjustment Mechanism (CBAM).
For imports in 2026, the legally applicable reporting period is 2026. Production data from earlier periods cannot automatically be submitted as CBAM-verified actual emissions, because accredited CBAM verification was not available for those historical production periods.
The distinction explains why the timing of customs clearance, rather than production alone, determined whether late-2025 inventories fell outside the definitive regime. Producing, selling or shipping metal before the end of 2025 was insufficient if the goods were not released for free circulation until 2026.
Front-Loading Shifted Trade Flows Before 2026
The clarification provides context for the exceptional aluminium and hot-rolled coil trade flows observed ahead of the definitive CBAM regime. Fastmarkets estimated that front-loading cleared approximately EUR 820 million in potential CBAM liabilities before 1 January 2026.
Shipments increased unusually sharply in late 2025, followed by a pronounced reversal in early 2026. The effectiveness of these inventory strategies depended on whether the relevant customs event took place before the new regime became applicable.
Bonded Inventories Carry Different Carbon-Cost Exposure
For traders, customs status has become a factor in managing carbon costs. Aluminium held in a bonded warehouse, placed under a suspensive customs procedure or otherwise awaiting release for free circulation may have a different CBAM treatment from physically identical stock that has already cleared EU customs.
The distinction is also relevant to inventory strategies in subsequent years. As the adjustment for free allocation declines towards 2034, the effective CBAM burden increases, potentially creating further incentives to manage the timing of imports around future increases in exposure.
However, the scope for such strategies is constrained by customs requirements, anti-circumvention rules, financing costs and available storage capacity.
Implications for Banks and Working Capital
The customs-date rule also matters for banks financing metal inventories. Stock financed before customs clearance may carry an uncertain future carbon liability, whereas inventories already released for free circulation have an established regulatory status under the applicable rules.
Working-capital models therefore need to distinguish between inventories according to their legal customs position, rather than relying solely on their physical location or production date.
The first wave of CBAM front-loading was reflected in changing trade flows. The Commission’s latest guidance highlights the equally important role of customs law in determining the resulting carbon-cost exposure.
