UK Carbon Border Adjustment Mechanism
UK CBAM 2027:
Compliance Support for Importers
From 1 January 2027, the UK Carbon Border Adjustment Mechanism (CBAM) puts a carbon price on certain imported goods. If your business brings in steel, aluminium, cement, fertiliser or hydrogen, you may need to register with HMRC, calculate the emissions embedded in what you import, and pay a carbon charge on them. The rules are already law under the Finance Act 2026, and the data you need takes months to gather.
Net Zero Group helps importers get CBAM-ready without turning their finance and operations teams into carbon specialists. We confirm whether you are in scope, build the emissions data that keeps your bill down, and set up a reporting process that works for the 2027 annual return and the quarterly cycle that follows.
Not sure whether CBAM applies to what you import?
Book a free 30-minute CBAM scoping call. We will check your imports against the in-scope commodity codes and tell you whether you need to act, and by when.
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The basics
What is the UK CBAM?
A Carbon Border Adjustment Mechanism puts a carbon price on imported goods, so that goods made abroad face a cost comparable to the one UK producers already pay under the UK Emissions Trading Scheme (UK ETS). It exists to stop carbon leakage: the risk that strong domestic climate policy simply pushes carbon-intensive production overseas rather than cutting emissions overall.
A UK steel producer pays for its emissions at home; an overseas competitor selling the same steel into the UK has historically paid nothing equivalent. The UK CBAM closes that gap by charging at the border, with the liability sitting on the importer.
Scope
Who does UK CBAM affect?
You are likely to be in scope if you import specified goods in five sectors above the value threshold:
Aluminium, cement, fertiliser, hydrogen, and iron and steel (specific products only, identified by commodity code).
£50,000 or more of in-scope goods over a rolling 12-month period. Below that, you are exempt.
Glass and ceramics were in earlier drafts but are not in scope from 2027. Electricity, which the EU CBAM covers, is excluded from the UK scheme. Goods of UK origin, and goods imported for non-commercial use, are also out of scope. Even if you sit just below the threshold, construction, manufacturing and infrastructure businesses will feel CBAM indirectly through the price of steel and cement.
The timeline
The key UK CBAM dates
| Date | What happens |
|---|---|
| 1 January 2027 | UK CBAM charging begins. No reporting-only transition. |
| 31 January 2028 | Registration deadline for businesses liable in the first year. |
| 31 May 2028 | First return and payment due, covering all of 2027. |
| From 1 January 2028 | Reporting moves to quarterly accounting periods. |
The first accounting period is a full year, which sounds generous, but there is a catch: whatever emissions data you fail to capture in 2027 is locked in at the government’s default values, which tend to be conservative and more expensive. The year is best used as a dress rehearsal for the quarterly cadence that starts in 2028.
Comparison
How the UK CBAM differs from the EU CBAM
If you already deal with the EU scheme, do not assume the UK works the same way. The headline differences:
| Feature | UK CBAM | EU CBAM |
|---|---|---|
| Mechanism | A tax, filed with HMRC | Buy and surrender CBAM certificates |
| Electricity | Excluded | Included |
| Emissions at launch | Direct only (indirect not before 2029) | Direct and indirect |
| Threshold | £50,000 value, rolling 12 months | 50-tonne mass exemption |
| First cycle | Annual for 2027, then quarterly | Annual declaration |
Businesses trading across both markets face both regimes at once, on different clocks and filing systems. Data gathered for one helps with the other, but the two are not interchangeable. Getting this right is exactly where expert support pays for itself.
How we help
How Net Zero Group helps you get CBAM-ready
Cost exposure under CBAM is driven by data quality. The businesses that gather verifiable emissions data early pay less and forecast better than those relying on defaults. As a B Corp certified UK carbon consultancy, we take the whole process off your desk:
Scope and threshold assessment
We screen your imports against the CBAM commodity codes and apply both the backward- and forward-looking £50,000 tests, so you know if and when to register.
Supplier emissions data
We engage your suppliers and build verified embedded-emissions data for your product lines, the slowest and highest-value part of the job.
Cost modelling
We forecast your CBAM liability across 2027 to 2030, factoring in the rising rate as UK ETS free allowances phase out.
Reporting and returns
We build a reporting process that handles the 2027 annual return and the 2028 quarterly cycle, with six-year record-keeping built in.
Carbon price relief
We identify and document deductible overseas carbon prices to reduce your liability.
The result is not just compliance. Lower-carbon suppliers become cheaper to import from, ESG credentials strengthen your procurement position, and you avoid nasty surprises when the first return falls due in May 2028.
Free download
Download our free UK CBAM guide
A plain-English guide to the UK CBAM: what the 2027 requirements mean, who they catch, how the charge is calculated, and how the UK rules differ from the EU scheme. Written for finance and operations teams, not carbon specialists.
Download the free guide (PDF)FAQ
UK CBAM: Frequently Asked Questions
Get started
Ready to get CBAM-ready?
Whether you are confirming scope or building a full compliance process, Net Zero Group will get you ready for 2027 and beyond. If you are not sure whether CBAM applies to you, we will work that out first.
Talk to a CBAM specialist
Tell us what you import and where from, and we'll come back with whether you're in scope, the likely exposure and a timeline.
A specialist replies — no automated sequence.