CBAM GUIDE
What Is CBAM? Your Guide to the 2026 Definitive Period
The Carbon Border Adjustment Mechanism (CBAM) is a European Union regulation designed to prevent carbon leakage and bring non-EU producers into the scope of carbon costs. Companies exporting certain product groups to the EU must report the greenhouse gas emissions generated during production, and over time, pay for those emissions. The transitional period is coming to a close: from 2026 onward, the definitive period begins, and the reporting obligation starts turning into a financial one.
Why It Matters
CBAM creates both operational and financial obligations for companies exporting to the EU. Businesses caught unprepared risk losing competitiveness through delayed reporting, incomplete data, and unpredictable carbon costs.
Actual Value or Default Value?
CBAM reporting relies on two core emissions methodologies: actual values measured at your own facility, and EU-set default values, which are usually higher. We break down which one works to your advantage, with a worked example, in our actual value vs. default value comparison guide.
Timeline
2023–2025 · Transitional Period
Reporting Obligation
Annual emissions reporting becomes mandatory for covered products; there is not yet a financial payment obligation.
2026 · Definitive Period
Certificate Obligation Begins
Importers become obligated to purchase CBAM certificates corresponding to the embedded emissions of their products; Authorised CBAM Declarant (ACD) status becomes central in this period.
2027 and beyond
Certificate Trading and Scope Expansion
The certificate purchase and surrender process becomes operational; the regulation is expected to expand to additional sectors and to indirect emissions.
Sectors Covered
The current regulation covers imports to the EU from the following sectors:
What Does This Mean for Your Company?
- You need clarity on whether your EU exports fall within CBAM scope
- You need to build data collection infrastructure at the facility and supplier level
- You need a verifiable process aligned with the reporting calendar
- You need an investment and supplier strategy to reduce carbon costs over the medium term
What We Cover in Depth Elsewhere in This Guide
We've broken down every dimension of CBAM into focused, practical guides:
Verification and Sector Guides
- Before certificates enter the picture, your data needs to be verified by an independent body; we walk through exactly how that works in our CBAM verification process guide.
- If you export aluminium, you'll find the technical detail — including how PFC emissions are calculated — in our aluminium sector SEE calculation guide.
- We cover the iron & steel sector's specific direct and indirect emissions sources in our iron & steel CBAM guide.
- You can review how emissions are calculated in cement production in our cement CBAM guide.
Operational Readiness
- We show you, step by step, how to prepare the monitoring plan that underpins your reporting in our monitoring plan guide.
- We explain the registry and ACD application process required to keep exporting to the EU in our CBAM registry and ACD guide.
- We summarize how certificate costs are determined and the 2026–2027 calendar in our certificate prices guide.
Cost, Perspective, and Audit Readiness
- To see what these costs mean in practice for a business like yours, take a look at our worked cost case study.
- To understand what your EU buyers will expect from you, read our guide written from the EU importer's perspective.
- You can use our audit preparation checklist to get ready for a verification audit.
- We've collected answers to the most common questions on our CBAM FAQ page.
Let's Assess Your CBAM Exposure Together
Let's clarify your business's position within CBAM scope in a free pre-assessment call.