On 22 October 2026, HMRC published detailed guidance setting out the rates and default values for the UK Carbon Border Adjustment Mechanism (CBAM), which takes effect on 1 January 2027. The mechanism applies to imports of certain carbon‑intensive goods (cement, iron and steel, aluminium, fertiliser, electricity, and hydrogen) and aims to level the playing field between domestic producers subject to the UK Emissions Trading Scheme (UK ETS) and foreign producers. The guidance provides default emission factors for each product category, calculation methodologies for embedded emissions, and rules for claiming reductions based on actual verified emissions data.
Key Takeaways
- Default Values Simplify Initial Compliance: Importers can use HMRC‑published default emission factors when actual data is unavailable, reducing administrative burden during the transitional phase.
- Verification Pathway for Actual Emissions: Businesses that obtain verified emission data from accredited verifiers can replace defaults, potentially lowering CBAM liability.
- Integration with UK ETS: CBAM certificates will be surrendered alongside UK ETS allowances, requiring coordinated reporting and payment processes for affected importers.
Disclaimer: This article is compiled and summarized by the AI based on publicly available information and is for general information purposes only. It does not constitute any form of formal tax advice, legal opinion, or basis for performance. Please consult a qualified professional tax advisor or legal counsel for tax advice.
Source: Read Official Announcement