The CBAM de minimis threshold exempts EU importers from all CBAM obligations when their total annual mass of CBAM goods falls below 50 tonnes per calendar year. Regulation (EU) 2025/2083 (the Omnibus) introduced this 50-tonne annual mass threshold, replacing the previous per-consignment value approach. Understanding exactly how this threshold operates determines whether an importer must register as an authorized CBAM declarant, purchase certificates, and submit annual declarations, or whether they qualify for a full exemption from all three obligations.
This article explains the 50-tonne rule in detail: how to calculate it, what it covers, which goods are excluded from the de minimis, and the critical timing requirement that catches many small importers off guard.
Caption: The CBAM de minimis threshold applies to total annual mass across all CBAM goods combined, not per product category or per shipment.
What Is the CBAM De Minimis Threshold?
The CBAM de minimis threshold is an annual import volume of 50 tonnes per importer per calendar year, below which an importer is fully exempt from all obligations under Regulation (EU) 2023/956, including authorization, certificate purchase, and annual declaration. The threshold is defined in Article 2(3a) of Regulation (EU) 2023/956, as inserted by the Omnibus amendment Regulation (EU) 2025/2083.
The EU carbon border adjustment mechanism uses this threshold as its primary small-importer relief measure. Without a de minimis, every company importing even a single tonne of steel, cement, aluminium, fertilizers, electricity, or hydrogen from a non-exempt country would face the full compliance stack: obtaining authorization as an authorized CBAM declarant, monitoring embedded emissions, engaging a verifier, purchasing certificates, and filing annual declarations.
The 50-tonne threshold removes that burden entirely for importers whose aggregate CBAM imports remain below the limit. Two important features define its scope.
The first feature is that the threshold applies per importer across all CBAM goods combined, not per product category. An importer bringing in 30 tonnes of steel profiles and 25 tonnes of cement clinker in the same calendar year has a combined total of 55 tonnes, which exceeds the threshold even though neither product individually crosses it.
The second feature is that the threshold applies on an annual basis, not per shipment. A single consignment of 10 tonnes does not trigger CBAM obligations on its own. The obligation arises when the running total for the calendar year, across all Annex I goods from all non-exempt origins, reaches 50 tonnes.
How the Omnibus Changed the De Minimis Rule
The de minimis threshold under CBAM changed fundamentally when Regulation (EU) 2025/2083 entered into force on October 17, 2025. The table below compares the pre-Omnibus and post-Omnibus positions.
| Parameter | Pre-Omnibus (Original 2023/956) | Post-Omnibus (Current Rule) |
|---|---|---|
| Threshold type | Per-consignment value | Annual mass |
| Threshold level | €150 per consignment | 50 tonnes per importer per year |
| Measurement basis | Customs value of each shipment | Net mass (intrinsic mass, no packaging) |
| Aggregation | Each shipment assessed separately | All CBAM goods combined across 12 months |
| Legal basis | Article 2(3) original | Article 2(3a) as inserted by 2025/2083 |
| In force from | October 2023 | October 17, 2025 |
The old per-consignment value approach created a mismatch between compliance burden and actual carbon relevance. A single high-value, low-mass consignment could trigger CBAM obligations, while a lower-value but heavier shipment could slip through. The Omnibus corrected this by anchoring the exemption to physical mass, which correlates more directly to embedded emissions.
The 50-tonne annual mass threshold applies from the definitive phase start on January 1, 2026. Importers operating under the transitional period (October 2023 through December 2025) were subject to the original quarterly reporting framework, not this threshold structure.
How to Calculate Your Annual Mass for the De Minimis
The 50-tonne calculation uses the net (intrinsic) mass of the goods, excluding packaging, as recorded on the customs declaration. The 4 steps below describe the calculation process.
The steps for calculating annual mass under the CBAM de minimis are listed below.
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Identify all Annex I goods in your import flows. Check every CN code you import against Annex I of Regulation (EU) 2023/956. Only goods whose CN codes appear in Annex I count toward the de minimis total. You can verify CN codes using the CBAM CN code lookup to confirm whether a specific product falls within scope.
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Exclude exempt origins. Remove any shipments originating from countries listed in Annex III of Regulation (EU) 2023/956: Iceland, Liechtenstein, Norway, and Switzerland. Goods from these countries carry no CBAM obligation at any volume.
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Exclude electricity and hydrogen. The de minimis threshold does not apply to electricity (CN code 2716 00 00) or hydrogen (CN code 2804 10 00). All imports of electricity and hydrogen, regardless of volume, are subject to full CBAM obligations. An importer bringing in 1 MWh of electricity and 49 tonnes of steel must comply fully for the electricity and, depending on the steel total, potentially for the steel as well.
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Sum the net mass across all remaining CBAM goods for the calendar year. Add together the net mass in tonnes of every qualifying import from January 1 through December 31. If the total is below 50 tonnes, the de minimis applies and no CBAM obligations arise. If the total reaches or exceeds 50 tonnes, full obligations apply for the entire year.
The mass used is the net mass recorded at the border under EU customs rules, not the gross weight including packaging or containers. For goods sold in bulk, the net mass figure on the customs declaration is the relevant number.
Who Qualifies for the CBAM De Minimis Exemption?
The CBAM de minimis exemption applies to any importer whose aggregate annual net mass of Annex I goods (excluding electricity and hydrogen) from non-exempt countries falls below 50 tonnes in a calendar year. The exemption is automatic: no registration, no application, and no notification to the competent authority is required for importers who remain below the threshold.
The practical profile of an importer who qualifies breaks into three common cases.
The first case covers occasional importers. A manufacturing company that periodically sources specialty steel fittings or aluminium components from Turkey or India as a secondary supply, with total annual volumes well under 50 tonnes, falls into this category. These importers typically have no CBAM exposure at all under the current threshold.
The second case covers small businesses importing low-volume construction materials. A building contractor importing 20 tonnes of cement products from Morocco in a single project, with no further CBAM imports during the year, remains exempt.
The third case covers diversified importers who must watch the aggregate. A trading company importing 20 tonnes of steel, 15 tonnes of aluminium, and 12 tonnes of fertilizers in one calendar year has a combined total of 47 tonnes and remains just under the threshold. Any additional purchase pushes them over.
The exemption covers all 3 core CBAM obligations: the obligation to obtain authorization as an authorized CBAM declarant under Article 4 of Regulation (EU) 2023/956, the certificate purchase and surrender obligation under Article 22, and the annual CBAM declaration obligation under Article 6. An importer below 50 tonnes has none of these requirements.
The Critical Monitoring Requirement: No Retroactive Exemption
Importers who exceed 50 tonnes during a calendar year must register as an authorized CBAM declarant before crossing the threshold, not after. This is the single most important operational rule for small and mid-sized importers approaching the limit.
Regulation (EU) 2023/956 does not permit retroactive exemption claims. An importer who imports 55 tonnes over a calendar year cannot declare that the first 50 tonnes were exempt and only the final 5 tonnes are subject to CBAM. Once the threshold is breached, the obligation applies to the full annual import volume, and the importer must have been authorized before importing the tonne that pushed them over.
The practical implication is that any importer with annual CBAM import volumes in the range of 30–50 tonnes faces an active monitoring obligation. The 5 actions below describe the monitoring process for near-threshold importers.
- Track running annual mass in real time, updating after each customs clearance of Annex I goods
- Set an internal alert threshold at 40 tonnes (80% of the limit) to allow adequate time for authorization processing
- Begin the authorization application at 40 tonnes because processing takes up to 120 days under IR 2025/486
- Do not wait for the year-end to assess the position: by the time 50 tonnes is reached, it may be too late to obtain authorization without a gap in compliant importing
- Appoint an internal compliance owner responsible for the running mass calculation before the first CBAM import of each calendar year
An importer who exceeds 50 tonnes without authorization faces penalties of €300–500 per tonne CO₂e of embedded emissions in the unauthorized imports, which is 3–5 times the standard €100/tCO₂e rate that applies to authorized declarants. For more detail on the penalty structure, see CBAM penalties.
Which CBAM Sectors Are Covered by the De Minimis?
The de minimis applies to 4 of the 6 CBAM sectors. The table below shows which sectors are covered and which are excluded.
| Sector | CN Code Examples | De Minimis Applies? |
|---|---|---|
| Iron and steel | 7201, 7206–7217, 7301–7307 | Yes |
| Cement | 2523 10, 2523 21, 2523 29 | Yes |
| Aluminium | 7601, 7604–7608, 7616 | Yes |
| Fertilizers | 2814, 3102 10, 3102 30, 3105 | Yes |
| Electricity | 2716 00 00 | No — all volumes subject to CBAM |
| Hydrogen | 2804 10 00 | No — all volumes subject to CBAM |
Electricity and hydrogen carry no de minimis threshold by design. Electricity imports flow through physical interconnectors in real time and cannot be meaningfully tracked on a per-consignment basis. Hydrogen, as an emerging strategic commodity, was placed outside the threshold to ensure all import flows are monitored from the start of the definitive phase.
For iron and steel, the de minimis applies to the intrinsic mass of the goods themselves, not to any precursor contribution. Steel billets used to produce steel pipes are counted at the steel-pipe stage when the finished goods are imported. A company importing 45 tonnes of steel pipes does not separately count the embedded scrap or iron ore that went into producing them.
Caption: Four CBAM sectors are covered by the 50-tonne de minimis; electricity and hydrogen carry no threshold and face CBAM obligations at any import volume.
What Happens When You Exceed the 50-Tonne Threshold Mid-Year?
When an importer's running annual mass of CBAM goods crosses 50 tonnes during a calendar year, all CBAM obligations activate for that full calendar year. The activation is not prospective from the date of crossing; it retroactively covers all imports made in that year from January 1.
This creates a practical risk window for importers who begin the year with no CBAM intentions and then expand their sourcing. An importer who placed 3 orders of approximately 18 tonnes each from January through September crosses the threshold on the third order. At that point, the obligation covers all 54 tonnes imported that year, and the importer must be authorized as an authorized CBAM declarant to remain in compliance.
The authorization application itself requires up to 120 calendar days for the competent authority to process under Article 4(1) of IR 2025/486. An importer who applies for authorization only after crossing the threshold in September will not receive authorization before the end of the calendar year in many cases.
For CBAM compliance for importers more broadly, the de minimis is the first determination to make in any compliance assessment, because it defines whether the full compliance stack applies at all.
Does the De Minimis Apply Per Importer or Per Legal Entity?
The 50-tonne threshold applies per importer, meaning per legal entity with its own EORI number established in the EU customs territory. Related companies within the same corporate group are each assessed independently unless they share the same customs importer of record.
A parent company and its wholly owned subsidiary that each import CBAM goods under their own EORI numbers each have their own 50-tonne threshold. If the parent imports 40 tonnes and the subsidiary imports 40 tonnes in the same year, neither triggers an obligation under the de minimis rule, provided they operate as separate legal importers.
Anti-circumvention provisions under Article 27 of Regulation (EU) 2023/956 address intentional splitting of import volumes across related entities to stay under the threshold. The Commission and national competent authorities monitor for patterns where a single economic unit fragments its imports across multiple legal entities with the clear purpose of avoiding the threshold. Artificial splitting to exploit the de minimis constitutes a circumvention violation.
How the De Minimis Interacts with Authorized Declarant Status
An importer below the 50-tonne threshold has no obligation to become an authorized CBAM declarant. Authorization is only required once the threshold is crossed or is foreseen to be crossed in a given calendar year.
Importers who consistently import below 50 tonnes but are growing close to the threshold face a planning decision: wait until the threshold is actually crossed and apply at that point, or apply proactively to ensure authorization is in place before the limit is reached. Given the 120-day authorization processing time, the second approach reduces compliance risk. An application submitted while still below 50 tonnes does not create any obligation; authorization simply becomes effective and available when needed.
Once an importer is authorized and their annual imports exceed 50 tonnes, all obligations of the definitive phase apply: quarterly holding of certificates covering at least 50% of cumulative embedded emissions, annual declaration by September 30 of the following year, and surrender of certificates equal to verified embedded emissions for the full year.
Contextual Border: How the De Minimis Fits into the Broader CBAM Compliance Framework
The CBAM de minimis threshold is the entry gate of the entire compliance process. Every CBAM applicability assessment begins here, before any analysis of embedded emissions, certificate costs, or declaration requirements. The 50-tonne rule functions as the primary filter separating importers who face no CBAM obligations from those subject to the full authorized declarant framework under the EU carbon border adjustment mechanism.
How Does the De Minimis Relate to the Authorization Deadline?
The authorization application deadline of March 31, 2026 applies to importers who needed to be authorized for the definitive phase start on January 1, 2026. Importers who were below 50 tonnes at the start of 2026 and subsequently grew beyond that level during 2026 must apply for authorization at the point where they foresee exceeding the threshold. The March 31, 2026 deadline was specific to importers already active in CBAM goods at the start of the definitive phase with volumes above the threshold.
Can a De Minimis Importer Still Voluntarily Register?
Voluntary registration below 50 tonnes is technically possible but confers no benefit under the current regulation. An importer below the threshold has no certificate obligation, no declaration obligation, and no access to the CBAM certificate market is needed. There is no mechanism for voluntarily purchasing CBAM certificates without being an authorized declarant, and no commercial reason to hold certificates without a surrender obligation.
What Records Should a Near-Threshold Importer Keep?
Near-threshold importers, defined here as those with annual CBAM imports between 30 and 49 tonnes, should maintain 3 categories of records to demonstrate compliance in the event of a competent authority inquiry.
The record categories for near-threshold importers are described below.
- Running mass logs: A dated record of each CBAM import, the CN code, country of origin, net mass in tonnes, and the cumulative total for the calendar year. This log proves that the importer monitored the threshold actively.
- Customs declarations: The full set of customs import declarations for all Annex I goods, retained for at least 4 years from the end of the calendar year in question.
- Origin documentation: Proof that the goods originated in a third country subject to CBAM (not an Annex III exempt country) and that the net mass figures used are consistent with the customs declaration data.
Does the De Minimis Apply to Goods Processed Under Customs Special Procedures?
Goods imported under inward processing relief (IPR) or customs warehousing are subject to CBAM when they are released into free circulation in the EU. The de minimis applies to the total net mass released into free circulation, not to the total mass entering the special procedure. An importer placing 100 tonnes into a customs warehouse but releasing only 40 tonnes into free circulation during the calendar year counts only 40 tonnes toward the threshold for that year.
How Does the CBAM Regulation Define the CBAM Regulation Scope for De Minimis Purposes?
The scope of the de minimis follows the same scope as CBAM as a whole under Article 2 of Regulation (EU) 2023/956. Only goods listed in Annex I, originating from non-Annex III countries, count toward the 50-tonne calculation. Goods re-exported from the EU, goods placed under transit procedures without release into free circulation, and goods originating from exempt countries are all excluded from the running total.
Frequently Asked Questions
What is the CBAM de minimis threshold in 2026?
The CBAM de minimis threshold in 2026 is 50 tonnes of annual net mass per importer per calendar year, applied across all CBAM goods combined (excluding electricity and hydrogen). Importers below this total are fully exempt from CBAM obligations including authorization, declarations, and certificates under Article 2(3a) of Regulation (EU) 2023/956 as amended.
Does the CBAM de minimis apply per shipment?
No. The CBAM de minimis does not apply per shipment or per consignment. It applies to the total annual mass of all CBAM goods imported by one importer during a calendar year. A single shipment of 10 tonnes does not trigger obligations, but 5 shipments totaling 55 tonnes in one year does.
Is electricity exempt from the CBAM de minimis threshold?
No. Electricity is explicitly excluded from the CBAM de minimis threshold. All imports of electricity, regardless of volume, are subject to full CBAM obligations. The same exclusion applies to hydrogen. Both sectors have no minimum threshold under Article 2(3a) of Regulation (EU) 2023/956.
What was the old CBAM de minimis before the Omnibus?
The original Regulation (EU) 2023/956 used a per-consignment value threshold of €150, below which CBAM did not apply to that individual shipment. Regulation (EU) 2025/2083 (the Omnibus), which entered into force on October 17, 2025, replaced this with the current 50-tonne annual mass threshold per importer.
Can an importer retroactively claim the CBAM de minimis exemption?
No. An importer who exceeds 50 tonnes during a calendar year cannot retroactively claim that the first 50 tonnes were exempt. The obligation covers the full annual import volume once the threshold is crossed, and the importer must have been authorized as an authorized CBAM declarant before exceeding the limit. Failure to hold authorization results in penalties of €300–500 per tonne CO₂e.
Does the 50-tonne CBAM threshold apply per legal entity or per corporate group?
The 50-tonne threshold applies per legal entity (per importer with its own EORI number), not per corporate group. Related companies with separate legal identities each have their own threshold. Intentional fragmentation of import volumes across related entities to stay under the threshold constitutes circumvention under Article 27 of Regulation (EU) 2023/956.