The European Union is moving to extend its carbon border tax beyond basic industrial materials, putting more finished products imported into the bloc under the Carbon Border Adjustment Mechanism, or CBAM.
The European Parliament adopted its negotiating position last week, backing a broader CBAM that covers downstream steel and aluminium products and strengthens rules designed to prevent companies from circumventing the system. Parliament’s position now goes into negotiations with EU member states, so the final product list could still change.
CBAM has applied in its definitive form since Jan. 1, 2026. It currently covers cement, iron and steel, aluminium, fertilisers, electricity and hydrogen, with importers required to account for the emissions embedded in covered goods.
Why downstream products matter
The expansion addresses a weakness in the original design. If carbon-intensive steel or aluminium is subject to a border charge but a finished product made from those materials is not, emissions can effectively move further down the value chain.
The Commission proposed adding 180 downstream products, with an average of 79% steel or aluminium content. EU member states subsequently backed a position covering 200 products, while Parliament’s negotiating position goes further.
Parliament’s CBAM rapporteur Mohammed Chahim said the package had “closed important loopholes, strengthened enforcement against circumvention, and expanded the mechanism’s scope where it matters most.”
Rapporteur for the temporary decarbonisation fund Pascal Canfin (Renew, FR) added: “We have taken a big step towards making Europe a safe place for investment in decarbonisation: we are broadening product coverage to enhance the level playing field and we are setting out stronger anti-circumvention rules, notably against resource shuffling from China.
We are also offering a more robust solution for farmers hit by fertiliser costs, and an export scheme to protect European companies on export markets where their competitors do not pay a carbon price.”
Carbon leakage moves beyond the factory gate
That is the bigger issue behind the policy. The EU defines carbon leakage as the risk that production moves to countries with weaker climate rules, or that EU products are replaced by more carbon-intensive imports. CBAM is intended to put a comparable carbon cost on certain imported goods.
But the problem does not stop at imported materials. European manufacturers also face emissions embedded elsewhere in their value chains, including suppliers, transportation and the use and disposal of products.
That brings CBAM into the wider corporate push to measure Scope 3 emissions, which cover indirect emissions throughout a company’s value chain.
An EU-backed procurement initiative says Scope 3 emissions can represent the largest part of the carbon footprint for many public organisations and recommends obtaining independently verified product-level data from suppliers.
In other words, carbon accounting is increasingly moving from a company’s own smokestacks to its suppliers and customers. For businesses selling into Europe, that makes reliable emissions data a commercial issue as well as a climate-reporting exercise.
Read more: EU Weighs Slower Emissions Cuts And More Free Permits As It Reworks Carbon Market Rules
