CBAM Compliance Checklist 2026: 11 Steps Every EU Importer Must Complete

CBAM compliance for EU importers requires completing 11 sequential steps under Regulation (EU) 2023/956, starting with a CN code check and ending with certificate surrender by September 30, 2027. The definitive phase has been in force since January 1, 2026, and the authorized declarant registration deadline of March 31, 2026 has already passed for most importers. EU CBAM obligations now apply to every importer above the 50-tonne annual de minimis threshold importing iron and steel, cement, aluminium, fertilizers, electricity, or hydrogen from non-exempt third countries.

This checklist covers every step an authorized CBAM declarant must complete for the 2026 reporting year, with exact deadlines, thresholds, and article citations from the regulation as amended by Regulation (EU) 2025/2083.

Caption: The 11-step EU CBAM compliance process runs from applicability checks in 2026 through declaration and certificate surrender in 2027.

What Is EU CBAM Compliance for Importers?

EU CBAM compliance is the obligation of an authorized CBAM declarant to register, track embedded emissions, purchase CBAM certificates, and file an annual declaration by September 30 of the year following each import year. The EU CBAM guide provides the full regulatory overview, but for EU importers the compliance obligation is operational and time-bound: 11 steps that must be executed in sequence across two calendar years.

The 2026 reporting cycle is the first full year under the definitive phase. CBAM certificates for 2026 imports are priced at the quarterly average EU ETS auction price for each quarter of importation, and the first declaration covering calendar year 2026 is due September 30, 2027. The net certificate cost in 2026 is small because the CBAM factor stands at 2.5% (97.5% of EU ETS free allocation remains), but the procedural obligations are in full effect regardless of cost.

The 11-Step CBAM Compliance Checklist

The 11 steps for EU CBAM compliance are ordered by operational sequence. Steps 1 through 6 apply during the import year (2026); steps 7 through 11 apply in the declaration year (2027) and beyond. Each step in the checklist starts with an action the authorized CBAM declarant must take.

1. Confirm your imports are CBAM-covered. Check every imported product's CN code against Annex I of Regulation (EU) 2023/956 using the CBAM CN code lookup to confirm scope. If the CN code appears in Annex I, CBAM applies. Also verify the country of origin: imports from Iceland, Liechtenstein, Norway, and Switzerland are exempt under Annex III. Turkey is not exempt despite the EU-Turkey Customs Union. Apply the de minimis check: if your total annual net mass of CBAM goods falls at or below 50 tonnes across all covered sectors, you are exempt under Article 2(3a). Electricity and hydrogen have no de minimis threshold.

2. Apply for authorized CBAM declarant status with your national competent authority (NCA). The deadline for provisional importing rights during the definitive phase was March 31, 2026, under Article 17(7a) inserted by Regulation (EU) 2025/2083. Applications are filed through the Authorization Management Module of the CBAM Registry using EORI credentials. Required documents include a valid EORI number, tax identification, 5-year customs compliance history, description of CBAM goods by CN code and country of origin, and an internal compliance procedures document. The NCA has a maximum of 120 days to issue an authorization decision from receipt of a complete application. The CBAM authorized declarant page covers the full application requirements and grounds for refusal.

3. Register in the CBAM registry portal. After authorization, the NCA creates a CBAM account in the EU CBAM Registry operated by DG TAXUD. Authentication uses the UUM&DS system, the same platform as the EU ETS Registry. The account holds certificate holdings, import transaction records automatically populated from customs data, and the declaration submission module.

4. Identify all covered imports by CN code and production route. For each import shipment of Annex I goods, record the CN code, net mass in tonnes, country of origin under EU customs origin rules, and the name and geographic coordinates of the production installation. Record the production route for each installation: blast furnace versus electric arc furnace for steel, production process classification for fertilizers and cement. This data is required for the annual CBAM declaration. Failure to collect it at import time makes retrospective reconstruction extremely difficult. The CBAM embedded emissions article explains why the production installation is the unit of analysis.

5. Calculate specific embedded emissions (actual or request from supplier). Specific embedded emissions are expressed in tonnes of CO₂e per tonne of goods, per Article 3(5). Importers obtain this figure from the non-EU production installation, covering direct embedded emissions for all sectors and indirect embedded emissions for cement and fertilizers. If the producer cannot or will not provide actual data, the importer uses default values from IR (EU) 2025/2621. Default values carry a punitive mark-up: 10% above the country-specific average in 2026, rising to 20% in 2027 and 30% from 2028 onward. For fertilizers, the mark-up is 1% across all years.

6. Commission an accredited verifier where required. Third-party verification of specific embedded emissions is mandatory when using actual values rather than defaults. Verifiers must be accredited under EN ISO/IEC 14065 by a national accreditation body recognized by European Accreditation, and registered in the CBAM Registry (registration opens September 1, 2026). A physical site visit to the non-EU production installation is mandatory for the first verification period covering 2026 imports. Verifier fees range from €5,000 to €50,000 per production installation depending on complexity. Importers with 10 or more production installations across their supply chain face verification costs that can exceed €200,000. Contract verifiers now to secure availability before the September 30, 2027 declaration deadline.

7. Track quarterly CBAM certificate holding at a rate of at least 50% of cumulative embedded emissions at each quarter end. The quarterly holding requirement under Article 22(2) as amended requires that, at the end of each calendar quarter from 2027 onward, the authorized CBAM declarant's registry account holds certificates equal to at least 50% of cumulative embedded emissions of all CBAM imports since January 1 of that year, adjusted for the SEFA free allocation factor. The NCA issues a formal notice if the threshold is not met. This requirement applies from Q1 2027 onward, when certificates become available.

8. Purchase CBAM certificates from February 1, 2027. Certificates are purchased exclusively from the national competent authority through the Common Central Platform. No secondary market, no exchange trading, no bilateral purchases exist. The certificate price for 2026 imports is the quarterly average of EU ETS auction clearing prices during each quarter of importation. For 2027 and subsequent imports, the price is the weekly average of EU ETS auction closing prices. At the current EU ETS price of approximately €70 per tonne CO₂ (late March 2026), the gross cost for a typical blast furnace steel import is approximately €140 per tonne, but the net 2026 obligation is just 2.5% of that gross figure due to the CBAM factor. The CBAM certificates article explains the purchase process, the buyback mechanism, and certificate cancellation dates.

9. Claim Article 9 deductions where a qualifying carbon price was paid in the country of origin. Article 9 of Regulation (EU) 2023/956 allows authorized declarants to reduce the number of certificates to surrender if the non-EU producer paid a legally binding carbon price in their country of origin for the specific embedded emissions of the exported goods. The deduction equals the carbon price effectively paid in euros per tonne CO₂, multiplied by the specific embedded emissions, divided by the CBAM certificate price. Voluntary carbon offsets and internal corporate carbon prices are categorically excluded. The Commission publishes the list of qualifying carbon pricing schemes; South Korea's K-ETS and the UK ETS are under assessment as of April 2026. China's ETS does not currently qualify because it is intensity-based and does not cover the steel sector.

10. File the annual CBAM declaration by September 30, 2027. The first annual CBAM declaration, covering all calendar year 2026 imports, is due September 30, 2027, under Article 6 as amended by Regulation (EU) 2025/2083. The CBAM declaration article details the content requirements. The declaration must include: total quantity of CBAM goods imported by type and country of origin, total specific embedded emissions by type and country of origin, total number of CBAM certificates to be surrendered, Article 9 deductions claimed with supporting documentation, and verification report references for actual values. Certificate surrender occurs at the time of declaration filing; the registry cancels surrendered certificates immediately.

11. Surrender the required number of certificates and retain all CBAM records for 4 years. Certificate surrender takes place through the CBAM Registry at the time of annual declaration filing. Authorized declarants may sell back up to 50% of certificates purchased in a given year, at the original purchase price, by October 31 of the surrender year (the buyback deadline for 2026 imports is October 31, 2027). Certificates not surrendered or bought back by November 1 are cancelled. Retain all supporting records, including customs declarations for CBAM goods, supplier emissions data and monitoring plan documentation, verification reports, certificate purchase and surrender confirmations, and Article 9 deduction calculations, until the end of the 4th year following the declaration year (through end of 2031 for 2026 imports).

How Does EU CBAM Compliance Differ by Import Volume?

EU CBAM compliance obligations scale with import volume and supply chain complexity, not with the net cost of certificates. An authorized CBAM declarant importing 60 tonnes per year of steel from a single Turkish mill faces the same 11-step procedural sequence as one importing 60,000 tonnes from 30 installations across 5 countries.

The de minimis threshold of 50 tonnes annual net mass per importer removes the smallest importers from the obligation entirely. Importers above the threshold but below approximately 500 tonnes annually typically face the highest compliance cost-to-liability ratio, because verification costs per installation remain fixed regardless of import volume. For these importers, using default values (which do not require third-party verification) is financially rational in 2026, even with the 10% mark-up, because the net certificate cost remains very small at the 2.5% CBAM factor.

Importers with more than 10 active production installations in their supply chain face the most operationally demanding version of CBAM compliance. These importers need a systematic data collection process, formal supplier engagement programs, and verifier contracts in place before January 1, 2026 imports are declared.

Caption: Authorized CBAM declarant status and CBAM Registry access are prerequisites for every subsequent step in the EU CBAM compliance checklist.

What Are the Penalties for Non-Compliance with EU CBAM?

Penalties for EU CBAM non-compliance are fixed and inflation-adjusted under Article 26 as amended by Regulation (EU) 2025/2083. An authorized CBAM declarant who fails to surrender sufficient certificates by the September 30 deadline is penalized €100 per tonne CO₂e not covered. An importer who brings CBAM goods into the EU without authorization faces a penalty of €300 to €500 per tonne CO₂e, which is 3 to 5 times the standard rate.

These penalty rates are not caps or maximums: the €100 per tonne rate is the exact statutory amount, inflation-adjusted from the base year. For an importer failing to surrender 1,000 certificates, the total penalty is €100,000. Non-authorization penalties at the €300 to €500 range for the same shortfall produce a liability of €300,000 to €500,000.

Does the CBAM De Minimis Threshold Apply to All Sectors?

No. The 50-tonne annual de minimis threshold applies to iron and steel, cement, aluminium, and fertilizers. Electricity and hydrogen are explicitly excluded from the de minimis threshold under Article 2(3a) as amended. Every tonne (or MWh for electricity) of electricity or hydrogen imports triggers CBAM obligations regardless of volume.

Is Verification Required When Using Default Emission Values?

No. Third-party verification by an accredited verifier is required only when an authorized CBAM declarant uses actual specific embedded emissions values rather than Commission-published default values. Using defaults eliminates the verification requirement but results in a punitive mark-up of 10% above the country-specific average in 2026, rising to 20% in 2027 and 30% from 2028 onward for all sectors except fertilizers.

Can an Importer Sell Back Unused CBAM Certificates?

Yes. Authorized CBAM declarants can sell back up to 50% of CBAM certificates purchased in a given calendar year, at the original purchase price, by October 31 of the surrender year. This buyback mechanism under Article 23 as amended provides a hedge against over-purchasing when actual import volumes or verified emissions fall below projections. Certificates not surrendered or bought back by November 1 are cancelled and lost with no compensation.

Does Paying a Carbon Price in the Country of Origin Reduce CBAM Obligations?

Yes, provided the carbon price qualifies under Article 9. The reduction equals the carbon price effectively paid per tonne CO₂, multiplied by the specific embedded emissions, divided by the CBAM certificate price. The Commission must have recognized the scheme in its published list. Voluntary carbon offsets and internal transfer pricing arrangements are categorically excluded. Russia, Turkey, and China do not currently operate qualifying carbon pricing schemes for the goods most commonly imported under CBAM.

For a full overview of the regulatory framework and how EU CBAM relates to the EU Emissions Trading System, visit the CBAM importers hub. The hub connects all importer-specific guidance including the authorization process, embedded emissions calculation methods, and certificate management.