In 5 minutes, find out what UK CBAM will cost your business in 2027.
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Check my exposureBuilt specifically for UK importers. Based on the latest HMRC draft legislation (February 2026).
CBAM Dashboard
Acme Manufacturing Ltd
Estimated 2027 liability
£62,000 – £94,200
Based on 47 in-scope import lines across 12 suppliers
HMRC registration
Expected late 2026
Supplier data
9 using default factors
First filing deadline
Annual return for 2027
UK ETS price
Range used for estimate
Compliance readiness
How it works
Upload your customs data
Export your CDS data or use our template. We accept CSV and Excel files.
Get your liability estimate in 60 seconds
We match your commodity codes against the CBAM scope and calculate embedded emissions using default factors.
Receive your readiness report by email
A PDF report with your liability range, top exposed suppliers, and a compliance action checklist.
Who needs to care about UK CBAM?
UK CBAM applies to imports in six carbon-intensive sectors. If your business imports any of these goods above the £50,000 annual threshold, you will need to register, report, and pay.
Aluminium
Cement
Fertiliser
Hydrogen
Iron
Steel
What the regulation actually says
The UK CBAM was confirmed in the Autumn Budget 2024 and will apply from 1 January 2027. It introduces a carbon price on imports of aluminium, cement, fertiliser, hydrogen, iron, and steel, designed to prevent carbon leakage as domestic producers face costs under the UK ETS.
Importers above the £50,000 annual threshold must register with HMRC, report the embedded emissions in their imports, and purchase CBAM certificates at a price linked to the UK ETS. The liability is calculated per tonne of CO2 equivalent embedded in imported goods, adjusted for any carbon price already paid at origin.
HMRC published draft secondary legislation on 10 February 2026, setting out commodity code scope, default emission factors, and reporting requirements. The first returns cover calendar year 2027 (filed annually), moving to quarterly from 2028.
See what your report looks like
Your report includes a liability estimate with low and high ranges, a breakdown by sector, your most exposed suppliers, and an action checklist to get you CBAM-ready before January 2027.
Delivered as a PDF to your inbox within 60 seconds of uploading.
Your CBAM readiness report
PDF preview
Acme Manufacturing Ltd
2027 UK CBAM Exposure Report
Estimated annual CBAM liability
£62,000 – £94,200
UK ETS price range: £35 – £55 / tonne CO2e
Top exposed suppliers
Action checklist
Frequently asked questions
What is the UK CBAM?
The UK Carbon Border Adjustment Mechanism is a carbon levy on imports of certain carbon-intensive goods. It ensures imported goods face a comparable carbon price to those produced domestically under the UK Emissions Trading Scheme.
When does UK CBAM take effect?
UK CBAM takes effect on 1 January 2027. The first reporting period covers calendar year 2027, with annual returns. Quarterly reporting begins in 2028.
Which goods are in scope?
Aluminium, cement, fertiliser, hydrogen, iron, and steel. The scope is defined by specific commodity codes in the HMRC draft secondary legislation.
Is there a de minimis threshold?
Yes. Importers with less than £50,000 in annual imports of in-scope goods are not required to register or report.
How is the CBAM liability calculated?
The liability is based on the embedded emissions in imported goods, multiplied by the UK carbon price, minus any carbon price already paid in the country of origin.
What data do I need to estimate my liability?
At minimum, you need your commodity codes, countries of origin, and import weights. Your CDS (Customs Declaration Service) export contains all of this.
How accurate is this estimate?
We use HMRC default emission factors and a UK ETS price range of £35-£55 per tonne CO2e. Your actual liability will depend on verified supplier emissions data and the prevailing carbon price.
Do I need to register with HMRC?
If your annual imports of in-scope goods exceed £50,000, you will need to register with HMRC before your first 2027 import. Registration details are expected in late 2026.
How is UK CBAM different from EU CBAM?
The UK CBAM is a separate regime from the EU CBAM. While the principles are similar, the scope, calculation methods, reporting requirements, and timelines differ. Compliance with one does not satisfy the other.
Is this tool free?
Yes. The exposure checker is completely free. We offer this to help UK importers understand their CBAM risk ahead of the 2027 deadline.
Find out where you stand before 2027.
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