The European Commission has released a new set of 10 guidance documents to help businesses and non-EU producers navigate compliance with the Carbon Border Adjustment Mechanism (CBAM) during its definitive phase.

Published on 14 August 2026, the guidance provides practical information for non-EU operators producing goods covered by CBAM, as well as authorised CBAM declarants and verifiers. The resources are designed to help businesses understand the requirements that apply as CBAM moves beyond its transitional phase.

The guidance package includes four general documents covering CBAM concepts, implementation, embedded-emissions calculations, and the adjustment for free allocation. Six additional guides provide sector-specific guidance for cement, hydrogen, fertilisers, iron and steel, aluminium, and electricity.

A major focus is the calculation and verification of embedded emissions. The Commission says the guidance is intended to help businesses establish robust monitoring processes, understand changes to emissions calculations, use actual emissions data where available, and apply the Commission’s default values when appropriate.

The development is particularly important as the CBAM definitive regime has applied since 1 January 2026. Importers of covered goods face monitoring, reporting, and financial obligations, making accurate emissions data and reliable compliance processes increasingly important.

The release of the guidance highlights the growing importance of emissions data management across international supply chains. Companies importing or producing CBAM-covered goods will need greater visibility into embedded emissions and stronger processes for collecting, calculating, verifying, and reporting carbon information.

As CBAM implementation progresses, regulatory guidance such as this will play an important role in helping businesses understand their obligations and prepare for the financial and reporting requirements associated with carbon-intensive imports.