Open consultation

Draft regulations: Carbon Border Adjustment Mechanism (CBAM) (Emissions and Verification)

Summary

This technical consultation seeks comments on the draft secondary legislation for the Carbon Border Adjustment Mechanism (CBAM)

This consultation closes at

Consultation description

This technical consultation sets out some of the draft secondary legislation that will come into effect on 1 January 2027 alongside Carbon Border Adjustment Mechanism (CBAM) being introduced.

This is in addition to other draft secondary legislation (setting out details of the administrative requirements, CBAM rate and carbon price relief) which was open for consultation until 24 March.

The aim is to gather feedback from stakeholders on the drafting of the secondary legislation to ensure that they deliver the policy correctly and effectively for the tax to operate as intended and provide for administrative matters.

A draft of the Notice which will have force of law is also being published to support understanding of how all of the CBAM legislation will read together. This document is not formally part of the consultation however if you have feedback on it, this can also be shared.

You can also read the policy summary document for further information on how CBAM will operate.

The draft secondary legislation includes the legislative requirements associated with the administration of the tax, including but not limited to:

  • embodied emissions
  • monitoring and verification of emissions data

This is of interest to:

  • UK importers of goods from the aluminium, cement, fertilisers, hydrogen, and iron and steel sectors and downstream producers that use these goods in their supply chains
  • overseas producers of CBAM goods for export to the UK
  • overseas accreditation bodies and verifiers of emissions, who will be impacted by the legislation if overseas producers choose to monitor the actual emissions they produce
  • respondents to the previous consultation
  • international partners with an interest in CBAM policy

Any responses to or queries about this consultation should be sent by email to cbampolicyteam@hmrc.gov.uk, using the subject line ‘CBAM technical consultation response’ and clearly referencing the relevant parts of the legislation.

Background

The government confirmed on 30 October 2024 that a UK CBAM will be introduced on 1 January 2027 and published primary legislation in Finance Act 2026.

CBAM will place a carbon price on specified goods imported to the UK from sectors that are at risk of carbon leakage. It takes effect from 1 January 2027.

Further details can be found in the policy summary document.

Documents

The Carbon Border Adjustment Mechanism (Emissions and Verification) Regulations 2026 (Draft)

Request an accessible format.
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email different.format@hmrc.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

The Carbon Border Adjustment Mechanism (Emissions and Verification) Force of Law Notice (Draft)

Request an accessible format.
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email different.format@hmrc.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

The Carbon Border Adjustment Mechanism System Boundaries document (Draft)

Request an accessible format.
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email different.format@hmrc.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Ways to respond

Updates to this page

Published 9 April 2026

Sign up for emails or print this page