CBAM Goes Live: Europe's Carbon Border Tax Reshapes Global Trade in 2026

The European Union's Carbon Border Adjustment Mechanism (CBAM) entered its financially binding phase on January 1, 2026, marking a historic shift in global climate trade policy. For the first time, importers of steel, aluminium, cement, fertilizers, hydrogen, and electricity into the EU must purchase carbon certificates priced at the EU Emissions Trading System (ETS) rate — €75.36 per tonne of CO₂ in the first quarter of 2026. With billions of euros in compliance costs now at stake and trade escalation risks already materializing, CBAM is reshaping supply chains, triggering geopolitical pushback, and accelerating a global wave of carbon pricing.

What Is CBAM and How Does It Work?

CBAM is the EU's flagship policy to prevent 'carbon leakage' — the risk that EU manufacturers relocate production to regions with weaker climate rules. Importers must buy CBAM certificates to cover the embedded emissions in their goods, effectively equalizing the carbon cost between domestic and imported products. During a transitional phase from October 2023 to December 2025, importers only reported emissions. As of January 2026, they face a direct financial liability. The obligation is being phased in gradually: importers must cover 2.5% of embedded emissions in 2026, rising to 100% by 2034 as free allowances under the EU ETS are phased out.

First Week Data: A Swift Start

The European Commission reported that in the first week alone (January 1–7, 2026), over 12,000 economic operators submitted applications for CBAM authorization, and more than 4,100 obtained authorized declarant status. Customs systems validated 10,483 import declarations covering approximately 1.66 million tonnes of goods, with iron and steel dominating at 98% of the volume. Top exporting countries included Türkiye, China, India, Canada, Taiwan, and Vietnam. The smooth technical launch, however, masks the underlying trade tensions brewing beneath the surface.

Geopolitical Pushback: China, India, and the US Push Back

China's WTO Challenge and Strategic Concerns

Beijing has been among the most vocal critics of CBAM, arguing it unfairly penalizes developing nations that rely on coal-based industrial production. China raised concerns at both the WTO and UN climate talks, warning that the mechanism could undermine global climate cooperation. With Chinese steel and aluminium exports to the EU facing new cost burdens, Beijing has signaled it may consider retaliatory measures, including its own carbon tariffs or trade barriers against European goods. The EU-China trade tensions over CBAM are expected to intensify as the mechanism expands.

India: Threatening Retaliation at COP30

India, another major trading partner, faces a particularly steep impact. A 2024 study estimated CBAM could add an average tax burden of about 25% on affected Indian exports to the EU. Since India lacks a domestic carbon pricing mechanism, its exporters cannot claim deductions under CBAM's Article 9, which allows reductions for carbon costs already paid in the country of origin. At COP30 in late 2025, Indian officials criticized CBAM for violating the principle of Common But Differentiated Responsibilities (CBDR-RC), arguing it penalizes economies that industrialized later and still rely heavily on coal. New Delhi has threatened retaliatory tariffs on EU goods, raising the specter of a trade war between the two economies.

United States: Warning of Trade Deal Threats

The United States has also pushed back. Washington warned that CBAM could threaten transatlantic trade deals, with some US lawmakers calling for a domestic carbon border adjustment mechanism to level the playing field. The US currently has no federal carbon price, making American exporters of steel and aluminium directly exposed to CBAM costs. While the Biden administration had explored climate trade initiatives, the political landscape remains divided. The US-EU trade policy dynamics surrounding CBAM are likely to influence future bilateral negotiations.

WTO Compatibility: Legal Challenges Mount in Geneva

The most formal legal challenge to CBAM comes from Russia, which filed WTO dispute DS639 on May 12, 2025, arguing that CBAM violates core GATT disciplines, including most-favored-nation treatment (Article I), national treatment (Article III), and quantitative restrictions (Article XI). The EU declined consultations in May 2025, stating they could not lead to a mutually satisfactory solution. On July 10, 2026, Russia escalated by requesting the establishment of a panel, making DS639 the first panel-stage litigation against CBAM. However, the WTO Appellate Body remains non-functional due to US blockages, meaning any ruling may lack enforcement teeth. Other nations, including India, China, Brazil, and South Africa, have also raised concerns at the WTO, though none have filed formal disputes. The EU defends CBAM as an environmental measure under GATT Article XX, arguing it is necessary to protect human, animal, or plant life and health. Legal experts remain divided on whether CBAM will survive a full WTO challenge, with the outcome likely years away.

Risk of Retaliatory Carbon Tariffs and Supply Chain Fragmentation

The biggest fear among economists is that CBAM could trigger a cascade of retaliatory carbon tariffs, fragmenting global supply chains. If major trading partners like China, India, or the US impose their own carbon border taxes on EU exports, the result could be a patchwork of overlapping climate-trade regimes that raise costs for businesses worldwide. The global supply chain fragmentation risk is particularly acute for sectors like automotive manufacturing, where steel and aluminium components cross borders multiple times. Some analysts warn that CBAM could accelerate nearshoring, as EU importers seek suppliers in countries with carbon pricing or lower emissions intensity. Türkiye, South Korea, and Canada — which have or are developing carbon pricing — may gain a competitive edge over India and China in the short term.

The 'Brussels Effect': Accelerating Global Carbon Pricing

Despite the backlash, CBAM is already prompting other nations to launch their own carbon pricing systems — a phenomenon known as the 'Brussels Effect.' Research from the Potsdam Institute for Climate Impact Research suggests that CBAM could trigger a cascade of carbon pricing adoption, resulting in 73% more CO₂ reductions globally (691 million tonnes) compared to EU action alone. The UK will launch its own CBAM in January 2027. Canada is considering a domestic mechanism. Japan is building a mandatory emissions trading system (GX-ETS). South Korea is raising its K-ETS price. Taiwan introduced carbon fees in 2026. Even China, despite its criticism, is expanding its national ETS to cover more sectors. The global carbon pricing trends are accelerating as nations seek to protect their export competitiveness.

Downstream Expansion: CBAM Grows in Scope

On June 12, 2026, EU member states agreed to extend CBAM from January 1, 2028, to approximately 180 downstream steel- and aluminium-intensive products, including machinery, vehicle components, appliances, and construction equipment. This closes a loophole where importing finished parts made from high-emission steel was cheaper than importing the raw steel itself. The expansion will bring an estimated 7,500 new importers into compliance scope, with China facing the largest exposure at €4 billion in affected imports, followed by the UK and Japan at €2 billion each. Anti-circumvention measures were also strengthened, including stricter reporting requirements and stronger Commission powers to investigate avoidance.

Expert Perspectives

CBAM is the most consequential climate trade policy ever implemented. It is forcing a global conversation about carbon pricing that has been decades in the making, but the transition will be painful for developing economies that lack the infrastructure to decarbonize quickly. — Dr. Helena Schmidt, climate policy analyst at the Potsdam Institute.

The EU is walking a tightrope. If CBAM is seen as protectionist rather than environmental, it could unravel the multilateral trading system. The WTO case brought by Russia is a warning shot, even if the Appellate Body is paralyzed. — Professor James Liu, international trade law expert at the London School of Economics.

FAQ: CBAM in 2026

What is CBAM? The Carbon Border Adjustment Mechanism is an EU policy that requires importers of carbon-intensive goods to purchase certificates priced at the EU ETS rate, ensuring imports face the same carbon cost as domestic production.

Which products are covered by CBAM? Steel, aluminium, cement, fertilizers, hydrogen, and electricity. From 2028, approximately 180 downstream steel- and aluminium-intensive products will also be included.

How much does CBAM cost in 2026? In Q1 2026, the certificate price was €75.36 per tonne of CO₂. Importers must cover 2.5% of embedded emissions in 2026, rising to 100% by 2034.

Which countries are most affected by CBAM? Top exporters to the EU in CBAM sectors include Türkiye, China, India, Canada, Taiwan, and Vietnam. Countries without domestic carbon pricing face the highest costs.

Is CBAM legal under WTO rules? The EU defends CBAM under GATT Article XX as an environmental measure. Russia has filed a formal WTO challenge (DS639), but the dispute is at an early stage and the Appellate Body is non-functional.

Conclusion: A New Era for Climate and Trade

CBAM's entry into force on January 1, 2026, marks the beginning of a new era where climate policy and international trade are inextricably linked. While the mechanism faces significant geopolitical headwinds and legal uncertainty, its early operational success and the cascade of carbon pricing it is triggering suggest that the 'Brussels Effect' is real. The coming months will test whether CBAM can survive WTO scrutiny, avoid retaliatory trade wars, and deliver on its promise of driving global decarbonization. For businesses and governments alike, the message is clear: carbon pricing is no longer a future possibility — it is a present reality reshaping the global economy.

Sources

• European Commission, 'CBAM successfully entered into force on 1 January 2026,' January 14, 2026. EC Press Release
• WTO Dispute DS639, 'European Union — Carbon Border Adjustment Mechanism,' filed by Russia, May 12, 2025. WTO DS639
• CBAM Guide, 'WTO DS639: Russia vs EU CBAM Dispute,' 2026. CBAM Guide Analysis
• CNBC, 'Carbon border tax: US, China and India lash out at EU climate policy,' October 1, 2025. CNBC Report
• Down To Earth, 'EU carbon border tax comes into force, raising costs for Indian exporters,' January 2026. Down To Earth
• Informed Clearly, 'EU Carbon Border Tax: CBAM Reshapes Global Trade in 2026,' 2026. Informed Clearly Analysis
• CBAM Guide, 'Countries,' 2026. CBAM Guide Country Analysis
• European Commission, 'Proposal to extend CBAM to downstream products,' COM/2025/989 final, December 17, 2025. EU Legislative Proposal