UK CBAM: the second carbon border, from 2027

From January 2027 the UK applies its own carbon border adjustment to imported iron & steel, aluminium, cement, fertilizers and hydrogen — a tax-style levy rather than certificates, priced off the UK ETS.

Calculate your carbon bill →CBAM guide

UK vs EU CBAM

	EU CBAM	UK CBAM
Start	2026 (definitive)	2027
Mechanism	certificates surrendered by importer	levy (tax-style) on importer
Sectors	+ electricity	no electricity; ceramics/glass considered then deferred
Price basis	EU ETS weekly auctions (€75.36 Q1 2026)	UK ETS reference price
Free-allocation mirror	phase-in 2.5%→100% to 2034	tracks UK free-allocation decisions

The linkage twist

The 2025-announced UK–EU ETS linkage is designed to exempt each other's goods from both CBAMs once live. Practical read for exporters: treat the UK and EU borders as one converging carbon frontier — verified embedded-emissions data satisfies both, and the same efficiency tonne saves on both sides.

Inzonex removable modular insulation on industrial equipment

Cut the tonnes at the source

Hot industrial equipment? Cut the heat loss.

Boilers, kilns, heat exchangers, valves and steam lines lose energy continuously. Inzonex makes patented (UK GB2508992.1) removable modular insulation — snap-fastened covers engineered per temperature tier, not generic off-the-shelf jackets:

Up to 90% less heat loss from insulated surfaces
Surface temperature ≤45 °C — touch-safe for workers (EN ISO 13732-1)
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Inspectable — comes off to check for corrosion under insulation, then refits like-new (generic jackets often don't survive removal)
Typical payback under 2 years (some 9–11 months)

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Who should prepare

Türkiye, China, India, the Gulf and US exporters of steel/aluminium to Britain — the same cast as EU CBAM. UK-bound volumes priced off ≈£55 UKA today; budget the levy with our calculator using the UK market option as proxy.

FAQ

Questions

When does UK CBAM start?

1 January 2027, per HM Treasury's confirmed design (levy-style, priced off the UK ETS).

Which products does UK CBAM cover?

Iron & steel, aluminium, cement, fertilizers and hydrogen. Unlike the EU version, imported electricity is not covered; glass and ceramics were considered and deferred.

How is UK CBAM different from EU CBAM?

Mechanism: a tax-style levy rather than purchased certificates; price referenced to the UK ETS; and the UK–EU linkage deal is expected to exempt each other's goods once in force.

Does a domestic carbon price reduce UK CBAM?

Yes — like the EU system, carbon prices effectively paid in the origin country are credited against the levy.

How this page is built: heat-loss figures follow ASTM C680 / ISO 12241 (the method behind our public calculators); facility emissions from Climate TRACE & EU ETS verified data across 30,000+ industrial sites; the 2026–2034 schedule is Regulation (EU) 2023/956, not a forecast. Published by Inzonex — manufacturer of modular removable insulation (UK Patent GB2508992.1). Spotted an error? Tell us — we correct on evidence.