What is the carbon border adjustment mechanism (CBAM)?

CBAM ensures imports to the EU pay for their carbon emissions, promoting fair competition, cleaner production, and reducing global pollution to support climate goals and stop carbon leakage.
By
Oskar Mortensen
February 19, 2026
5 min read
What is the carbon border adjustment mechanism (CBAM)?

Picture a shipment of steel arriving at a European port, carrying a hidden cost linked to the pollution it caused during production. The Carbon Border Adjustment Mechanism (CBAM) is a new EU system that makes sure imported products like this pay the right price for their carbon emissions.

Think about companies tempted to move their factories to places with weaker climate rules to save money. CBAM stops this by charging a fee that matches the pollution cost products would face if made in Europe. This helps keep competition fair and pushes for cleaner production worldwide.

Now, imagine buying cement or aluminum that includes the cost of the pollution it created. CBAM requires importers to report emissions and pay for certificates reflecting those carbon costs. This encourages businesses everywhere to reduce their carbon footprint and supports global efforts to fight climate change.

Definition: carbon border adjustment mechanism (CBAM)

CBAM is a system by the European Union that charges a fee on imported goods based on their carbon emissions. It makes sure products from countries with weaker climate rules pay the same pollution cost as those made in Europe. This encourages companies worldwide to reduce their carbon footprint.

CBAM makes sure imported goods pay for their pollution costs. It charges fees based on the carbon emissions of products entering the EU.

Think of CBAM like a toll for pollution on products coming into the EU. If a company imports steel made in a country with lax environmental laws, it pays extra to match EU carbon costs. This helps European businesses compete fairly and motivates cleaner production everywhere.

How the EU shaped its carbon border price policy over time

What sparked the creation of the carbon border adjustment mechanism? The EU wanted to stop companies from moving production to countries with looser climate rules, which could undo their carbon cuts. This challenge led to a new policy tool focused on balancing carbon costs globally.

The idea took root with the European Green Deal in 2019, aiming for climate neutrality by 2050. Later, the “Fit for 55” plan pushed for a 55% emissions cut by 2030, including CBAM to stop carbon leakage. CBAM applies a carbon price on certain imported goods like steel and cement, ensuring they face similar costs as EU-made products. This levels the playing field and encourages cleaner production worldwide.

How did the mechanism move from concept to law? After debates, the EU Parliament and Council agreed on rules in 2023. The system’s rollout started with a data collection phase in late 2023, before full financial obligations kick in by 2026.

CBAM is a key piece in the EU’s climate puzzle, covering major carbon-intensive sectors. It helps push global industries toward sustainability while protecting EU climate goals.

By applying carbon costs fairly, the CBAM supports greener trade and fights carbon leakage worldwide.

7 examples on how carbon pricing affects global trade

Here are seven ways carbon pricing can influence industries and economies around the world:

  • Steel exports: Carbon pricing encourages cleaner production by making high-emission steel more costly to export. This pushes companies to adopt greener technologies.
  • Cement manufacturing: With carbon costs added, cement producers are motivated to lower emissions through alternative materials and energy sources.
  • Aluminum trade: Carbon pricing impacts aluminum, which requires a lot of energy, prompting shifts toward renewable power in smelting processes.
  • Electricity imports: Countries exporting electricity from fossil fuels face higher costs, encouraging investment in low-carbon energy generation.
  • Chemical industry: Carbon costs incentivize chemical companies to redesign processes for lower emissions and more circular resource use.
  • Textile production: High-emission textile manufacturing becomes less competitive, boosting demand for sustainable fibers and practices.
  • Agricultural goods: Carbon pricing affects farming practices and supply chains, encouraging reduced emissions and sustainable land use.

While carbon pricing creates new challenges for industries reliant on fossil fuels, it also drives innovation and cleaner production methods. This contrast pushes global trade toward sustainability, benefiting the environment and future economies.

Terms related to border carbon policies

Countries are increasingly using tools to reduce carbon emissions linked to international trade.

  1. Carbon pricing – A method that puts a cost on emitting carbon to encourage businesses to pollute less.
  2. Border carbon tax – A tax on imported goods based on the carbon emissions produced during their creation.
  3. Emissions trading system (ETS) – A market where companies buy and sell permits to emit a certain amount of carbon dioxide.
  4. Climate change policy – Rules and actions governments set to reduce greenhouse gas emissions and protect the environment.
  5. International trade and environment – How trade between countries affects environmental health and sustainability efforts.
  6. Carbon leakage – When emissions move to countries with looser environmental rules, undermining local climate actions.
  7. Sustainable supply chains – Systems ensuring products are made and delivered with minimal harm to the planet.
  8. European Green Deal – The EU’s plan to become climate-neutral by 2050 through various environmental policies.

Frequently asked questions on the Carbon Border Adjustment Mechanism (CBAM)

Here are clear answers to common questions about CBAM and its role in climate and trade policies.

What is carbon pricing and how does CBAM relate?

Carbon pricing sets a cost on greenhouse gas emissions to encourage reduction. CBAM acts like a carbon price on imports, ensuring foreign producers pay for their emissions, leveling the playing field.

How does CBAM function as a border carbon tax?

CBAM charges importers based on the carbon emissions of their products. This "border tax" prevents companies from avoiding climate rules by moving production abroad.

What is the emissions trading system (ETS) and its connection to CBAM?

ETS lets companies buy and sell emission allowances within a cap. CBAM complements ETS by covering imports, so all products face similar carbon costs.

Why is CBAM important for climate change policy?

CBAM helps reduce global emissions by encouraging cleaner production worldwide and supports the EU’s goals under the European Green Deal.

How does CBAM affect international trade and the environment?

CBAM promotes fair trade by preventing carbon leakage and motivates countries to improve environmental standards while protecting EU industries.

What is carbon leakage and how does CBAM prevent it?

Carbon leakage happens when companies move production to countries with lax climate rules. CBAM discourages this by applying carbon costs to imports.

How can CBAM support sustainable supply chains?

By making emissions costly, CBAM encourages companies to choose greener suppliers and materials, promoting sustainability throughout the supply chain.

How does CBAM fit within the European Green Deal?

CBAM is a key tool in the European Green Deal to reduce emissions, protect EU competitiveness, and drive global climate action through fair carbon costs.