The European Union’s amended Carbon Border Adjustment Mechanism (CBAM) rules set an annual 50-tonne mass threshold for imports of steel, aluminium, cement and fertilisers. A European Commission assessment published in September 2026 found that the threshold exempted about 0.87% of embedded emissions during the measured period. It removes many small importers from core declaration and certificate obligations while leaving almost all associated emissions within scope.
The exemption is based on the annual cumulative mass of covered goods, which companies must monitor and declare properly when eligible. Crossing the threshold can bring the full relevant year’s imports into scope, so accurate customs classification and quantity records matter even to businesses that expect to stay below it. Importers cannot assume that splitting purchases among suppliers or trading months creates a separate 50-tonne allowance for each.
Smaller companies still need to identify covered goods and track whether their annual totals are approaching the limit. The threshold does not apply to electricity or hydrogen: qualifying imports of those goods remain subject to CBAM regardless of volume.
Full compliance activity is expected to be concentrated among large importers, industrial groups and traders handling repeat shipments. Those operators are likely to be the main users of installation-level emissions data, verification services and certificate forecasting tools. Demand for full compliance services is concentrated among industrial entities whose accumulated volume, emissions and pricing exposure justify systematic controls.
The threshold does not remove the need for foreign producers to provide robust emissions data when major EU customers remain liable. Those buyers may request factory information and contractual cooperation from all suppliers. A small exporter serving one large importing group may face essentially the same data request as a larger producer, although the legal obligation rests with the EU declarant.
Market-intelligence reports should distinguish the number of importers potentially exempted from the proportion of imports and emissions that remains covered. The rules are expected to produce fewer direct declarants than a simple count of customs participants would suggest, while concentrating reporting and financial exposure among larger operators.