The CBAM 50-Tonne Exemption: Are You Exempt, and How Not to Lose It Mid-Year

Quick answer: if your combined annual imports of iron and steel, cement, aluminium and fertilisers do not exceed 50 tonnes of net mass, you are fully exempt from CBAM: no authorisation, no declaration, no certificates. The European Commission estimates this frees roughly 90% of importers while still covering about 99% of embedded emissions. Two hard edges, though. Hydrogen and electricity never qualify, whatever the volume. And crossing the line at any point during the calendar year puts your entire year's imports in scope, with penalties for importing above the threshold without authorisation reported at three to five times the standard rate. The exemption is real and generous. It is also easy to lose by accident in the fourth quarter.

What the threshold actually measures

The 50-tonne de minimis was introduced by the Omnibus Regulation (EU) 2025/2083, replacing the old 150-euro consignment value exemption with a single mass-based test. It is calculated per importer, meaning per legal entity with its own EORI number, per calendar year, as cumulative net mass, aggregated across all covered goods and all CN codes.

Every word of that does work. Not per shipment: twenty deliveries of 3 tonnes each is 60 tonnes. Not per product: 30 tonnes of steel sections plus 25 tonnes of aluminium profiles is 55 tonnes, over the line, even though neither product alone crosses it. Not per supplier: origins do not matter to the count. One entity, one year, one running total.

Who this frees, and why it exists

The threshold exists to take occasional traders and small industrial buyers out of a regime built for bulk flows: the machine shop importing fittings, the distributor bringing in a few pallets of fasteners a quarter, the manufacturer whose EU-external sourcing is marginal. Around nine importers in ten fall out of scope entirely, while the emissions coverage barely moves, because CBAM tonnage is concentrated in large consignments.

One boundary to respect: the threshold attaches to the legal entity, not the corporate group. Related companies each carry their own 50 tonnes, but deliberately fragmenting import volumes across entities to stay under the line is circumvention under Article 27 of Regulation (EU) 2023/956, and the practice is explicitly on the regulator's watchlist.

The two exclusions that catch people

Hydrogen and electricity sit entirely outside the exemption: any imported quantity is in scope from the first kilowatt-hour or kilogram. And the perimeter itself is a moving target. The threshold can be recalculated by the Commission on annual review if emission intensities or trade patterns shift, and analyses reported by EUROMETAL project the product scope widening toward downstream goods such as screws, tubes and wire products, potentially around 180 additional categories by 2028. Today's comfortably exempt hardware importer is not guaranteed to stay that way.

The mid-year trap: one order reclassifies your whole year

Here is the scenario that turns a paperwork exemption into a penalty file. Your running total stands at 46 tonnes in October. A customer emergency needs a 6-tonne order in November. You import it. Your year is now 52 tonnes, and the consequence is not that 2 tonnes are in scope. All 52 tonnes are, retroactively to January, and you needed authorised CBAM declarant status before the crossing shipment, not after.

Without that status, two things happen. Customs can no longer clear your covered goods, since only authorised declarants may import above the threshold. And the competent authority can open penalty proceedings under Article 26(2) and (2a) of the regulation, with reported rates of 300 to 500 euros per tonne of embedded CO2e for unauthorised imports, three to five times the standard 100 euros per tonne, inflation-adjusted, and paying the penalty does not cancel the certificate obligation. None of this depends on being caught by chance: the Commission monitors the mass threshold through customs data and informs national authorities when an importer crosses it.

The management routine that prevents all of this fits on an index card. One named owner of the running total. A check of that total before confirming any order in the second half of the year. And when the forecast approaches 50 tonnes, a deliberate choice between two clean options: defer the shipment to January, since the counter resets with the calendar year, or apply for authorisation before the crossing import, not with it.

If you will cross: the order of operations

Apply first, import after. During the 2026 transition there was a grace mechanism: applications filed by 31 March 2026 allowed provisional importing while the decision was pending. Past that window, plan for real processing time, because the sequence is unforgiving: no status, no import above the line. Once authorised and above threshold, the full chain applies for the year, which means the annual declaration by 30 September of the following year and certificate surrender, with certificate sales opening 1 February 2027. Our importer playbook covers that chain end to end.

Exempt does not mean undocumented

Staying under the threshold is a factual claim, and the Commission is looking at the same customs data you are. Keep a simple record of the year's covered imports by CN code and net mass, so that if the competent authority ever asks, the answer takes an afternoon and not an audit. The importers who get hurt by de minimis rules are rarely the ones over the line on purpose; they are the ones who never ran the total.

Frequently asked questions