Policy paper
Introduction of Carbon Border Adjustment Mechanism
This tax information and impact note is about the new Carbon Border Adjustment Mechanism (CBAM) tax.
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Details
Carbon Border Adjustment Mechanism (CBAM) will make sure that highly traded, carbon intensive goods imported into the UK face a comparable carbon price to that paid by manufacturers in the UK.
This will apply from 1 January 2027 to goods from the following industrial sectors:
- aluminium
- cement
- fertiliser
- hydrogen
- iron and steel
Updates to this page
Published 26 November 2025
Last updated 9 September 2026
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The TIIN has been updated to reflect revised estimates of one-off costs to business and ongoing administrative burdens.
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First published.