On August 14, 2026, the European Commission published ten guidance documents to help businesses and other non-EU operators understand and comply with the EU’s Carbon Border Adjustment Mechanism (CBAM) during its definitive phase. The definitive phase introduces full compliance requirements for importers of carbon-intensive goods into the EU, including obligations to monitor emissions, report information, and meet financial requirements under the EU CBAM Regulation and its implementing rules.

The Scope of CBAM Guidance

The recently published CBAM guidance comprises four general guidance documents and six sector-specific guides that cover the main practical aspects of CBAM compliance during the definitive phase. The first four documents cover: the main CBAM concepts; a practical roadmap for non-EU producers of CBAM goods; how to calculate embedded emissions in CBAM goods; and how the free allocation adjustment under the EU Emissions Trading System (EU ETS) affects the number of CBAM certificates.

The remaining six documents provide sector-specific guidance for cement, hydrogen, fertilizers, iron and steel, aluminum, and electricity. They explain the relevant production processes and value chains for each sector and provide more detailed instructions on monitoring and reporting embedded emissions.

The guidance is important because businesses importing CBAM-covered goods need to be prepared to verify their emissions data and establish reliable processes for reporting actual emissions. The Commission’s resources are intended to help businesses understand the CBAM framework and prepare to use actual emissions values for imports made during 2026.

The guidance covers how to develop a Monitoring Plan and implement robust emissions-monitoring procedures. Furthermore, the European Commission explained how the methodology for calculating embedded emissions has changed compared with the transitional period and how businesses can use the Commission's default emissions values. Finally, the guidance explains how to calculate the free allocation adjustment, supported by practical examples to help businesses determine their CBAM certificate obligations.

Conclusion

Taken together, the ten guidance documents give businesses a clearer roadmap for navigating CBAM's definitive phase, from calculating embedded emissions to understanding sector-specific reporting requirements. With actual emissions values now required for 2026 imports, non-EU producers and EU importers alike should use this guidance to review their data collection processes, prepare Monitoring Plans, and ensure they can meet their reporting and certificate obligations as the transitional period gives way to full compliance.