The UK’s Carbon Border Adjustment Mechanism (CBAM) is due to take effect on 1 January 2027, giving businesses importing certain carbon-intensive goods limited time to understand the new requirements and prepare for the changes ahead.
For affected importers, CBAM is more than an additional customs requirement. It could introduce new responsibilities around emissions data, supplier engagement, record keeping and financial reporting, while potentially influencing procurement decisions, product costs and profit margins.
With preparation likely to involve several areas of a business, taking action early can help importers identify potential risks and avoid last-minute compliance challenges.
What Is the UK CBAM?
The UK Carbon Border Adjustment Mechanism is designed to place a carbon-related cost on certain emissions-intensive goods imported into the UK.
Its wider aim is to help reduce carbon leakage by ensuring that imported goods are subject to a carbon cost comparable to that faced by similar products manufactured in the UK. The mechanism is intended to support fairer competition while encouraging lower-carbon production and supply chains.
Initially, the UK CBAM will cover specified goods across several carbon-intensive sectors, including:
- Aluminium
- Cement
- Fertiliser
- Hydrogen
- Iron and steel
Businesses importing goods within the scope of the scheme will need to consider new requirements relating to emissions information, record keeping, reporting and tax obligations.
Why Should Importers Start Preparing Now?
Although implementation is still ahead, CBAM preparation should not be left until the final months of 2026.
One of the biggest practical challenges for many businesses is likely to be collecting accurate emissions information from overseas suppliers.
The emissions data associated with imported goods can have a direct impact on the amount of CBAM liability incurred. Where appropriate verified information is unavailable, businesses may need to use government-specified default values, which could result in a higher carbon cost.
This makes supplier engagement an important part of CBAM preparation.
Businesses may need to review how they source products, assess supplier data quality and consider whether alternative suppliers could provide more reliable emissions information.
CBAM Could Affect More Than Compliance
For some businesses, the impact of CBAM could extend beyond customs and tax teams.
The additional carbon cost may influence several areas of commercial decision-making, including:
- Supplier selection – Businesses may place greater importance on suppliers that can provide reliable emissions information.
- Procurement – Importers may need to reconsider sourcing strategies and supply-chain structures.
- Pricing – Additional costs could affect product pricing and profit margins.
- Contracts – Supplier agreements may need to address emissions data and responsibility for providing relevant information.
- Financial planning – Businesses will need to understand and budget for potential CBAM liabilities.
- Internal reporting – New processes may be required to collect, check and retain the relevant information.
As a result, CBAM should be viewed as a cross-functional business issue, rather than something that sits solely with the customs or finance department.
Which Businesses Will Be Affected?
Businesses importing more than £50,000 of in-scope CBAM goods within a 12-month period will need to consider registration and accounting requirements under the UK scheme.
Importers should not wait until they are certain that they will exceed the threshold before reviewing their position.
Historical import records, commodity codes, suppliers and product categories can all provide useful information when assessing potential exposure.
A review carried out now can help businesses establish whether CBAM is likely to apply to their imports and, if so, what preparation may be required.
Five Questions Importers Should Be Asking
1. Do We Import Goods Covered by CBAM?
Start by reviewing your current product range and import activity.
Check the relevant commodity codes and identify whether any of your imports fall within the sectors covered by the UK CBAM. This initial assessment can provide a clearer picture of your potential exposure.
2. What Could Our CBAM Costs Be?
Understanding potential financial exposure early can help businesses prepare for the additional costs.
Consider current import volumes, product types, suppliers and available emissions information. Early assessment can also help identify potential implications for margins, pricing and future sourcing decisions.
3. Can Our Suppliers Provide Reliable Emissions Data?
Supplier information is likely to be one of the most important elements of CBAM preparation.
Importers should begin speaking with relevant suppliers to understand what emissions data is available, how it is calculated and whether it can meet the applicable requirements.
Starting these conversations early gives suppliers time to address information gaps before CBAM obligations begin.
4. Are Our Internal Processes Ready?
CBAM may require information to be collected from different parts of the business.
Customs records, purchasing information, supplier data, product details and financial records may all need to work together.
Businesses should therefore assess whether their existing systems and processes can capture, verify and retain the information needed for CBAM compliance.
5. Who Will Be Responsible for CBAM?
Clear ownership will be essential.
Depending on the organisation, responsibility may involve customs, finance, procurement, sustainability, tax or supply-chain teams.
Assigning responsibility early can help ensure that deadlines are understood, information is collected consistently and potential issues are identified before they become compliance problems.
Start Preparing Before 2027
The introduction of UK CBAM represents a significant change for businesses importing certain carbon-intensive goods.
While 1 January 2027 may still seem some way off, effective preparation can take time. Businesses may need to review import data, identify affected products, engage overseas suppliers, assess emissions information and establish suitable internal processes.
Taking these steps early can provide greater visibility over potential costs and give businesses more time to adapt their procurement and reporting strategies.
Preparing Today for a Smoother CBAM Transition
UK CBAM should not be treated simply as a future customs requirement. For affected importers, it could have wider implications for supply chains, procurement, pricing, financial planning and supplier relationships.
Businesses that begin assessing their position now will have more time to identify gaps, improve data collection and establish clear responsibilities before the mechanism takes effect.
The earlier importers understand their CBAM exposure, the better positioned they will be to manage the transition with confidence and minimise unnecessary compliance and financial risks.
