Greening at the Border: Carbon Border Adjustment Mechanism Incidence on EU Member States and Their Trading Partners

Why It Matters

Even modest ad‑valorem tariffs can shift competitiveness for carbon‑intensive exporters and signal a broader move toward global carbon pricing, reshaping trade relations and climate policy coordination.

Key Takeaways

• CBAM adds ~0.1% cost to EU imports overall
• Exporters face up to 1.2% ad‑valorem increase
• Costs concentrate in cement, steel, aluminium sectors
• Political resistance stems from perceived trade barrier

Pulse Analysis

The EU’s Carbon Border Adjustment Mechanism reflects a decisive step toward aligning trade policy with climate ambition. By imposing a fee on the carbon embedded in imported goods, CBAM seeks to level the playing field for EU producers subject to the Emissions Trading System while discouraging carbon leakage. Its scope—covering high‑emission sectors such as cement, steel, and aluminium—captures about half of the ETS‑covered emissions, signaling the bloc’s willingness to use border tools to reinforce its 2030 climate targets.

Recent quantitative work by Dolphin and Ferrucci (2026) provides the first systematic estimate of CBAM’s trade impact. Using 2021 input‑output data, the study translates the carbon charge into an ad‑valorem tariff equivalent, finding an average increase of 0.1 % on the value of EU imports and 0.04 % on the export value of partner countries. While the aggregate effect appears modest, the burden is uneven: a handful of exporters of carbon‑intensive goods face tariffs approaching 1 % of export value, and sector‑specific costs can be substantially higher. This concentration explains the strong diplomatic push‑back from nations such as China, India and Russia, which view the mechanism as a de‑facto trade barrier.

Beyond immediate trade numbers, CBAM carries strategic implications for global climate governance. If perceived as a legitimate climate policy tool, it could spur wider adoption of carbon pricing and reduce leakage, accelerating decarbonisation worldwide. Conversely, accusations of protectionism risk fracturing multilateral cooperation, especially with developing economies emphasizing equity under the UNFCCC. Future reforms—addressing rebate structures, WTO compatibility, and targeted climate‑finance support for vulnerable exporters—will determine whether CBAM becomes a catalyst for a more coordinated global carbon price or a source of trade tension.