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Carbon Border Adjustment Mechanism

In ForceRegulationEnglish

Introduction

Regulation (EU) 2023/956 establishes the Carbon Border Adjustment Mechanism (CBAM), a landmark tool in the European Union's efforts to fight climate change and prevent 'carbon leakage'. Carbon leakage occurs when companies based in the EU move carbon-intensive production abroad to countries with less stringent climate policies, or when EU products are replaced by more carbon-intensive imports. This Regulation aims to equalize the carbon price between domestic products and imports, ensuring that the EU's climate objectives are not undermined by production relocating to countries with lower ambition.

Main Goal

The primary objective is to reduce global carbon emissions and support the goals of the Paris Agreement by incentivizing third-country producers to reduce emissions. It complements the EU Emissions Trading System (EU ETS) by applying an equivalent carbon price to imports of certain goods.

Who It Applies To

The Regulation applies to importers (Authorized CBAM Declarants) who import specific goods into the customs territory of the Union.

Affected Sectors (Annex I Goods)

The mechanism initially covers specific carbon-intensive sectors:

  • Cement
  • Iron and Steel
  • Aluminium
  • Fertilisers
  • Electricity
  • Hydrogen

It also applies to certain precursors and downstream products (e.g., screws, bolts) made from these materials. The scope includes both direct emissions (from production) and, for certain goods, indirect emissions (from electricity used in production).

Key Provisions

Transitional Period (Oct 1, 2023 – Dec 31, 2025)

  • Importers must report emissions embedded in their imports on a quarterly basis.
  • No financial adjustment (payment) is required during this phase.
  • The goal is to collect data and prepare stakeholders.

Definitive Period (From Jan 1, 2026)

  • Importers must be granted the status of 'authorized CBAM declarant'.
  • Importers must declare annually the quantity of goods imported and their embedded emissions.
  • Importers must surrender CBAM certificates corresponding to the declared emissions. The price of certificates mirrors the weekly average auction price of EU ETS allowances.

Obligations & Requirements

  1. Authorization: Before importing goods in the definitive period, importers must apply for authorization via the CBAM registry.
  2. Calculation: Determining embedded emissions (direct and indirect) using specific methodologies (actual data preferred; default values used only when actual data is unavailable/unverified).
  3. Verification: Emissions declarations must be verified by an accredited verifier.
  4. Surrender of Certificates: Purchase and surrender certificates to cover the verified emissions.
  5. Record Keeping: Maintain records of information used to calculate emissions for four years.

Exemptions

  • De Minimis: Consignments with an intrinsic value not exceeding €150.
  • Military Use: Goods moved or used in the context of military activities.
  • Geographic: Goods originating in Iceland, Liechtenstein, Norway, Switzerland, and certain territories (Büsingen, Heligoland, Livigno, Ceuta, Melilla).

Penalties

  • Failure to Surrender Certificates: A penalty of €100 per tonne of CO2 (indexed to inflation) for each certificate not surrendered, plus the obligation to surrender the missing certificates.
  • Reporting Failures: During the transitional period, penalties apply for incomplete or incorrect reports (ranging between €10 and €50 per tonne of unreported emissions).
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Pillars

Environmental

Audience

BusinessStates

Applicable Area

EU

Categories

CBAM ReportingCBAM (Carbon Border Adjustment Mechanism)Emission ManagemnetGHG EmissionsCarbon FootprintDecarbonizationScope 1 & 2Climate ChangeInternational Trade & DevelopmentEU Green Deal

Regulation (EU) 2023/956

Timeline
  • Proposed
    Jul 14, 2021
  • Approved
    Apr 18, 2023
  • Adopted
    May 10, 2023
  • Published
    May 16, 2023
  • In Force
    May 17, 2023
  • In Application
    Oct 1, 2023
  • Last Updated
    Dec 16, 2025
Implementation Timeline:

1. **Transitional Period (1 October 2023 – 31 December 2025)**
- **WHO:** Importers or indirect customs representatives of goods listed in Annex I (Cement, Iron & Steel, Aluminium, Fertilizers, Electricity, Hydrogen).
- **WHAT:** Quarterly reporting obligations only. No financial payment required.
- **DEADLINES:** Reports due one month after the end of each quarter (e.g., report for Q4 2023 due Jan 31, 2024).
- **EXEMPTION:** Consignments < €150.

2. **Preparation for Definitive Period (Starting 2025)**
- **WHO:** Importers planning to continue importing scoped goods.
- **WHAT:** Application for 'Authorized CBAM Declarant' status.
- **TIMING:** Applications generally accepted starting late 2024/2025 to ensure authorization by Jan 1, 2026.

3. **Definitive Period (Starts 1 January 2026)**
- **WHO:** Authorized CBAM Declarants.
- **WHAT:**
- Importation only allowed by authorized declarants.
- Purchase of CBAM certificates.
- Verification of emissions data by accredited verifiers.
- **DEADLINES:**
- **31 May 2027:** First annual CBAM declaration due for the 2026 calendar year (Note: Regulation text Art 6 states 30 September, but alignment with ETS often suggests May; specifically, Art 6(1) says 'By 30 September of each year... for the preceding calendar year').
- **30 September 2027:** Surrender of CBAM certificates for 2026 emissions.
- **Quarterly:** Ensure 80% of required certificates are on account (rules phasing in).

4. **Full Phase-In (2026 – 2034)**
- Free allocation of EU ETS allowances for comparable domestic industries will be phased out gradually. The CBAM financial obligation will increase proportionally (e.g., in 2026, CBAM covers only the proportion not covered by free allowances, reaching 100% by 2034).
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Documents & Attachments

Official Documents

Downstream Goods Scope Extension and Anti-Circumvention Regulation
Proposal for a REGULATION OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL amending Regulation (EU) 2023/956 as regards the extension of its scope to downstream goods and anti-circumvention measuresDec 17, 2025
Proposal for a RegulationEnglishEU
Customs Authorities Information Regulation
Commission Implementing Regulation (EU) 2025/2619Dec 16, 2025
Implementing RegulationEnglishEU
CBAM Free Allocation Adjustment Calculation Regulation
Commission Implementing Regulation (EU) 2025/2620Dec 16, 2025
Implementing RegulationEnglishEU
Default Values Regulation
Commission Implementing Regulation (EU) 2025/2621Dec 16, 2025
Implementing RegulationEnglishEU
Declared Embedded Emissions Verification Principles Regulation
Commission Implementing Regulation (EU) 2025/2546Dec 10, 2025
Implementing RegulationEnglishEU
Embedded Emissions Calculation Regulation
Commission Implementing Regulation (EU) 2025/2547Dec 10, 2025
Implementing RegulationEnglishEU
CBAM Certificates Pricing Implementing Regulation
Commission Implementing Regulation (EU) 2025/2548Dec 10, 2025
Implementing RegulationEnglishEU
Authorised CBAM Declarant Status Regulation
Commission Implementing Regulation (EU) 2025/2549Dec 10, 2025
Implementing RegulationEnglishEU
CBAM Registry Regulation
Commission Implementing Regulation (EU) 2025/2550Dec 10, 2025
Implementing RegulationEnglishEU
Accreditation of Verifiers Regulation
Commission Delegated Regulation (EU) 2025/2551Nov 20, 2025
Delegated RegulationEnglishEU
Continental Shelf and EEZ Goods and Products Regulation
Commission Implementing Regulation (EU) 2025/2210Oct 31, 2025
Implementing RegulationEnglishEU
Simplifying and Strengthening Carbon Border Adjustment Mechanism
Regulation (EU) 2025/2083Oct 8, 2025
RegulationEnglishEU
CBAM Authorised Declarant Regulation
Commission Implementing Regulation (EU) 2025/486Mar 17, 2025
Implementing RegulationEnglishEU
Carbon Border Adjustment Mechanism Simplification and Strengthening Regulation
Proposal for a REGULATION OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL amending Regulation (EU) 2023/956 as regards simplifying and strengthening the carbon border adjustment mechanismFeb 26, 2025
Proposal for a RegulationEnglishEU
CBAM Registry Implementing Regulation
Commission Implementing Regulation (EU) 2024/3210Dec 18, 2024
Implementing RegulationEnglishEU
Carbon Border Adjustment Mechanism Transitional Reporting Regulation
Commission Implementing Regulation (EU) 2024/2649Oct 10, 2024
Implementing RegulationEnglishEU
Carbon Border Adjustment Mechanism Transitional Reporting Regulation
Commission Implementing Regulation (EU) 2023/1773Aug 17, 2023
Implementing RegulationEnglishEU
Implementing Act - CBAM Transitional Registry
Aug 17, 2023
Delegated ActEnglish
Implementing Act - Rules for CBAM registry & Declarations
Aug 17, 2023
Delegated ActEnglish
CBAM Amendment Proposal Annexes
COM(2025) 87 final
Regulation
CBAM Accreditation of Verifiers Proposal
C/2025/7845 final
Delegated Act

General Information Documents

About Law
InformationEnglish
Executive Summary
InformationEnglish

Supportive Documents

Q&A
Q AEnglish
EC - CBAM Supportive Documents
Supportive DocumentEnglish
CBAM Self Assessment Tool
GuidanceEnglish
Guidance document on CBAM implementation for importers of goods into the EU
GuidanceEnglish
Guidance document on CBAM implementation for installation operators outside the EU
GuidanceEnglish
CBAM Communication template - Examples
Supportive DocumentEnglish
CBAM communication template for installations
Supportive DocumentEnglish
Default values transitional period
Supportive DocumentEnglish
Default values transitional period (Excel format)
TemplateEnglish
CBAM transitional registry (Where to report)
Supportive DocumentEnglish
Checklist for EU importers
Supportive DocumentEnglish
CBAM Registry for non-EU
InformationEnglish
CBAM Registration Guide for non-EU Operators (O3CI)
GuidanceEnglish
CBAM operators Non-EU Companies. Guidance on access request procedure
GuidanceEnglish
CBAM Registry access for non-EU installation operators – technical user manual
GuidanceEnglish
Privacy Statement - CBAM Registry
InformationEnglish
Transitional CBAM Registry user manual for Declarants
GuidanceEnglish
Guidance for declarants - “Request Delayed Submission”
GuidanceEnglish
CBAM Goes Live: Guidelines for Operational Procedures for 1
Supportive DocumentEnglish
List of National Competent Authorities for CBAM
Supportive DocumentEnglish
CBAM and developing countries/LDCs
Supportive DocumentEnglish
Q&A – New Article 27a
Q AEnglish