The European Union’s Carbon Border Adjustment Mechanism started applying financial charges in January 2026. If your company ships steel, cement, aluminium, fertilisers, electricity, or hydrogen to the EU, you now have compliance obligations and additional costs to manage.
What CBAM Actually Does
CBAM is a carbon tariff. The EU charges importers for the embedded carbon emissions in certain goods. The aim is to level the playing field between EU producers (who face carbon pricing under the EU ETS) and foreign competitors who don’t.
For UK exporters, this means additional reporting requirements and potentially significant costs. The mechanism tracks the carbon intensity of your production process and charges accordingly. Low-carbon producers pay less; high-carbon producers pay more.
The Transition Period Is Over
Between October 2023 and December 2025, CBAM operated in reporting-only mode. That ended on 31 December 2025. From January 2026, EU importers must purchase CBAM certificates reflecting the carbon embedded in the goods they import from the UK.
This creates a direct cost for your EU customers. If they can source the same product from an EU supplier without the CBAM charge, you’ve become less competitive on price.
What UK Businesses Must Do
First, understand your exposure. CBAM currently covers a limited range of sectors, but the EU plans to expand it. If you export affected goods, you need to calculate the embedded emissions in your products. This requires data on your production process, energy sources, and raw material origins.
Second, document everything. The EU’s verification requirements are strict. You need robust emissions data, ideally verified by an accredited body. Rough estimates won’t pass. Your EU importer needs this data to purchase the correct number of CBAM certificates.
Third, consider your production methods. If you use high-carbon energy or processes, evaluate alternatives now. Switching to renewable energy or improving efficiency can directly reduce your CBAM liability and improve your competitive position.
The UK Carbon Pricing Angle
The UK operates its own Emissions Trading Scheme. The EU allows deductions for carbon prices already paid in the exporting country. If you’re already paying for emissions under the UK ETS, you can reduce your CBAM liability accordingly.
However, you need to prove to the EU that you’ve paid a comparable carbon price. That means more documentation and verification. The UK and EU are negotiating systems to streamline this, but for now it’s manual work.
What This Means for Business Strategy
CBAM represents a shift in trade policy. The EU is leading, but others are watching. The UK is considering its own border carbon adjustments. The US has similar proposals.
For finance directors, this means integrating carbon into supply chain planning and investment decisions. Carbon has become a measurable cost, not just an ESG reporting line.
Businesses that treat CBAM as purely a compliance exercise miss the point. Companies that can demonstrate low-carbon production gain a pricing advantage. Those that can’t face growing cost pressure.
Practical Next Steps
Engage with your EU customers to understand how they’re handling CBAM compliance. They’re responsible for purchasing certificates, but they need your emissions data. Poor communication here damages relationships quickly.
Work with your accountants or sustainability consultants to establish an emissions tracking system. Many businesses are discovering they don’t have the data infrastructure in place. Building these systems takes time.
Model the financial impact. Run scenarios based on different carbon intensities and production methods. Understand what CBAM means for your margins and pricing. Don’t wait for the first invoice to figure this out.
Where We Are Now
CBAM is operational. UK businesses exporting to the EU face new costs and compliance requirements. Companies that measure emissions, optimise production, and communicate effectively with customers will be better positioned. Those that ignore it risk losing market share to competitors who’ve adapted faster.
Carbon has become a cost of doing business with the EU. Plan accordingly.