CBAM EU Importers

The Carbon Border Adjustment Mechanism applies to EU importers that bring covered carbon-intensive goods into free circulation from countries outside the EU. CBAM puts a carbon price on imports of steel, iron, cement, aluminium, fertilisers, electricity, and hydrogen.

On 1 January 2026, the transitional reporting period ended and the definitive CBAM regime began. Belgian importers above the CBAM threshold must hold Authorised CBAM Declarant status, track embedded emissions, purchase CBAM certificates, and file an annual CBAM declaration.

Why the EU Created CBAM

European manufacturers pay for carbon emissions through the EU Emissions Trading System (ETS). Non-EU producers supplying the same products may face no equivalent carbon cost in their country of production.

That difference can create carbon leakage. Carbon leakage happens when production shifts outside the EU to avoid carbon costs, while the goods are still sold into the EU market.

CBAM closes that gap by applying a carbon cost to covered imports. It does not replace import duty, Belgian import VAT, or customs clearance requirements.

CBAM applies on top of the EU Common Customs Tariff. The importer must treat customs duty, VAT, and CBAM as separate obligations, each with its own calculation method.

CBAM Covered Goods and Excluded Goods

CBAM covers 6 product sectors. The table below lists each sector with common product examples.

Sector membership alone does not trigger CBAM. The obligation is tied to the specific Combined Nomenclature (CN) code of each imported product. Only CN codes listed in Annex I of EU Regulation 2023/956 are covered.

A consignment of structural steel sections may trigger CBAM. A consignment of finished steel fabrications may not trigger CBAM, depending on the exact CN code declared in the PLDA import declaration.

Getting the classification right is not optional. An under-declared CBAM position creates a certificate shortfall at the annual declaration. An over-declared position creates unnecessary certificate purchase cost.

The HS codes for CBAM goods

The guide explains how CBAM-triggering CN codes are identified inside the EU TARIC system.

Accurate CN classification Belgium also supports CBAM scope checks before a Belgian import declaration is filed.

CBAM Omnibus Regulation and the 50-Tonne Threshold

The CBAM Omnibus Regulation introduced a single mass-based threshold for most CBAM goods. The threshold is 50 tonnes of CBAM-covered goods per importer per calendar year.

Importers below 50 tonnes are normally exempt from the full CBAM obligation set for that calendar year. This means no Authorised CBAM Declarant registration, no CBAM certificate purchase, and no annual CBAM declaration for those goods.

The threshold is calculated across covered CBAM goods combined. It is not calculated separately for steel, aluminium, cement, and fertilisers.

Electricity and hydrogen require separate attention. The 50-tonne exemption does not apply in the same way to electricity and hydrogen imports.

The threshold applies annually. An importer below the threshold in one year may exceed it in the next year. Belgian importers should keep quantity records from the first covered shipment, not only after they believe the threshold is close.

Before assuming CBAM does not apply, verify total annual import quantities against the current threshold. This check should use CN codes, shipment quantities, countries of origin, and release-for-free-circulation records.

CBAM customs consulting Belgium support helps importers document the threshold position and avoid unplanned CBAM exposure during the year.

3 CBAM Obligations Above the 50-Tonne Threshold

Importers whose annual CBAM goods volumes exceed the threshold face 3 main obligations from 1 January 2026.

Register as an Authorised CBAM Declarant before importing covered goods above the threshold. Authorisation runs through the CBAM Registry and the national competent authority. It is separate from Belgium’s PLDA customs declaration system.

File an annual CBAM declaration. The declaration covers all CBAM-covered goods imported during the prior calendar year. It states product quantities and verified embedded greenhouse gas emissions in tonnes of CO₂ equivalent.

Purchase and surrender CBAM certificates equal to the declared embedded emissions, after applying permitted adjustments. Certificates are linked to EU ETS allowance prices. Certificate pricing is calculated quarterly in 2026 and weekly from 2027 onwards.

The first annual CBAM declaration for 2026 imports is due by 30 September 2027. CBAM certificates for 2026 imports are surrendered by the same deadline.

CBAM certificate purchase does not happen at each customs clearance. It is managed through the CBAM Registry as part of the annual declaration and surrender cycle.

CBAM 2026 Deadline Checklist for Belgian Importers

Belgian importers should treat CBAM as a year-round compliance process. Waiting until the annual declaration deadline creates supplier data gaps and certificate cost uncertainty.

This checklist connects customs data with CBAM reporting. The CN code, customs procedure, country of origin, and importer of record all affect the final CBAM position.

CBAM and Belgian Import Customs Clearance

CBAM operates as an annual obligation, not a transaction-by-transaction customs charge. A Belgian importer clearing 20 container loads of aluminium billets across the year does not settle CBAM at each port clearance.

The financial obligation lies at the annual CBAM declaration. However, the customs declaration still controls the CBAM data trail.

Two points in the standard import clearance process carry direct CBAM relevance.

First, the CN code filed in the PLDA declaration determines whether the consignment counts toward CBAM. A misdeclared code can exclude a covered shipment or include a shipment that should be excluded.

Second, the Authorised CBAM Declarant status must be in place before importing covered goods above the threshold. Customs data and CBAM authorisation must match the legal importer of record.

Import duty Belgium CBAM 2026 for CBAM-affected goods at the Port of Antwerp, Brussels Airport, or Belgian land borders requires early document review. The import file should match the invoice, packing list, CN code, origin statement, and CBAM scope assessment.

Winz supports customs clearance documentation, CN code review, PLDA coordination, and compliance checks for Belgian importers of CBAM-covered goods. Winz does not provide transport, air freight delivery, or container shipping services.

Embedded Emissions Data From Non-EU Suppliers

The annual CBAM declaration requires embedded greenhouse gas emissions per tonne of each covered product. The data should be linked to the production facility and product type.

Actual production data from the non-EU manufacturer is the preferred basis. Where the supplier cannot provide reliable data, default values may apply. Default values are usually conservative and can increase certificate cost.

Importers sourcing from countries with operational carbon pricing systems may be eligible for a deduction. The deduction requires evidence of carbon costs already paid in the country of origin.

Supplier data should be collected during the import year. Waiting until 2027 creates a practical problem because the supplier may not have verified production data available for earlier shipments.

The broader legislative context for CBAM sits within the EU customs reform 2025 programme, which affects data quality, customs visibility, and importer compliance planning.

CBAM Supplier Data Checklist

Belgian importers should request structured data from non-EU suppliers before the first 2026 shipment. A clear checklist reduces missing values and prevents late-stage reporting gaps.

Supplier data should include:

• Production facility name and address
• Product description and CN code
• Country of origin
• Quantity imported
• Direct embedded emissions
• Indirect embedded emissions where applicable
• Production route or process data
• Carbon price paid outside the EU
• Verification evidence was required
• Supplier contact person for CBAM questions

This data should be stored with the customs file. Importers should connect supplier emissions data to each import declaration, invoice, and CN code.

CBAM, Import Duty, VAT, and Landed Cost

Many importers encountering CBAM for the first time assume it replaces import duty. It does not.

Import duty continues to apply at the EU Common Customs Tariff rate for the CN code of the goods. Belgian import VAT continues to apply under normal VAT rules.

CBAM adds a separate carbon cost calculated on embedded emissions. It has its own calculation base, deadline, registry, and certificate surrender process.

For steel from a country with no carbon pricing, the landed cost structure can include 4 separate components:

All 4 components apply independently. A correct landed-cost estimate should include customs duty, VAT, CBAM exposure, supplier data cost, and compliance administration.

Common CBAM Compliance Errors

CBAM errors often start before the annual declaration. The most common problems come from customs classification, supplier data, and threshold tracking.

Common errors include:

• Using a 6-digit HS code instead of the exact EU CN code
• Treating the 50-tonne threshold as a per-sector threshold
• Ignoring electricity and hydrogen exceptions
• Waiting until 2027 to collect supplier emissions data
• Assuming CBAM is paid at customs clearance
• Treating CBAM as a replacement for import duty or VAT
• Importing above the threshold without Authorised CBAM Declarant status
• Failing to connect PLDA declarations with CBAM Registry data

These errors can create certificate shortfalls, late declarations, customs delays, and compliance risk. A documented CBAM control process reduces these risks before the first affected shipment enters Belgium.

Customs consulting Belgium can support threshold checks, CN code review, supplier data planning, and CBAM readiness for importers of covered goods.