CBAM 2026: What the Carbon Border Tax Means for Your China Steel & Aluminium Orders

The Definitive Phase Is Live: What 1 January 2026 Actually Means

The EU Carbon Border Adjustment Mechanism (CBAM) is no longer a reporting exercise. Since 1 January 2026 it has been in its definitive regime, which means imports of carbon-intensive goods into the European Union now carry a real carbon-price obligation. If you buy steel, aluminium, cement, fertilisers, hydrogen or electricity from China, the carbon emitted to make those goods must be declared, verified and — from 2027 onward — paid for at the EU border.

CBAM is not a fixed tariff. It is a cost equaliser: the EU charges importers the difference between the EU carbon price and any carbon price already paid in the country of origin. Because China does not yet have a carbon price that the EU recognises as fully equivalent, most China-origin CBAM goods will face a border carbon charge.

Covered Goods: Steel, Aluminium, Cement, Fertilisers, Hydrogen and Electricity

CBAM Annex I covers six sectors and roughly 303 Combined Nomenclature (CN) codes. For China importers, the most exposed categories are:

• Iron and steel — CN chapters 72 and selected chapter 73 articles (bars, wire, tubes, pipes, structural profiles, screws and bolts).
• Aluminium — CN chapter 76, including unwrought aluminium, bars/rods/profiles, plates/sheets, foil and structures.
• Cement — selected headings in CN chapter 25, including clinker and Portland cement.
• Fertilisers — nitric acid, ammonia, potassium nitrate, and nitrogen/mineral fertilisers under chapters 28 and 31.
• Hydrogen — CN 2804 10 00.
• Electricity — CN 2716 00 00, traded through physical interconnectors only.

Complex goods matter: if a product contains a CBAM precursor — for example, a steel fastener made from CBAM steel — the embedded emissions of the precursor are added to the final product's total. You cannot look only at the finished article.

Timeline: When You Actually Pay

The 2026 calendar year is a build-data year, not a payment year. The key dates are:

• 1 January 2026 — definitive regime starts; authorised CBAM declarant status is required for importers above the threshold.
• 1 February 2027 — CBAM certificates become available for purchase through the Common Central Platform (CCP).
• 30 September 2027 — first annual CBAM declaration is due and the corresponding certificates for 2026 imports must be surrendered.

Certificate prices are based on the EU ETS allowance price. In 2026 the price is set as a quarterly average, which means the cost of your 2026 imports is locked quarter-by-quarter and will not move with 2027 carbon-market volatility.

How the Carbon Cost Is Calculated

The number of certificates you surrender equals the verified embedded emissions of the imported goods, adjusted for three things:

1. Carbon price already paid — if the producer paid a recognised carbon price outside the EU, that amount is deducted.
2. CBAM factor — because EU industry still receives free ETS allowances in 2026, the CBAM liability is discounted. Only 2.5% of embedded emissions are charged in 2026, rising each year until the factor reaches 100% in 2034.
3. EU ETS benchmark — installations performing at or below the EU benchmark pay only the CBAM-factor share; every tonne above the benchmark is charged in full.

The 50-Tonne De Minimis: The Small-Importer Escape Hatch

CBAM has a single mass-based threshold: an importer whose total net mass of CBAM goods in cement, iron/steel, fertilisers and aluminium is 50 tonnes or less per calendar year is exempt. The European Commission's September 2026 assessment confirmed this threshold still exempts only 0.87% of embedded emissions, well below the 1% statutory ceiling, so it stays at 50 tonnes for now.

Three catches apply:

• Hydrogen and electricity are never exempt — CBAM applies from the first import.
• The threshold is per importer, per year — it aggregates across all CN codes and all customs entries, so splitting orders to stay below 50 tonnes is prohibited.
• Indirect customs representatives are not importers — if a non-EU seller uses an indirect representative, the representative must meet CBAM obligations when the represented importer exceeds the threshold.

2026 Action 1 — Embed Emissions Data in Every RFQ

If your supplier cannot give you verified embedded-emissions data, you will be forced to use EU default values. Default values carry a penalty mark-up: 10% in 2026, 20% in 2027, 30% from 2028 onward (1% for fertilisers). That makes the RFQ the first line of CBAM defence.

Add these requirements to every relevant RFQ:

• Installation name, address and CN/UNLOCODE for each production site.
• Specific embedded emissions in tonnes CO₂e per tonne of product (Scope 1 direct, plus Scope 2 indirect where required).
• Whether the installation is above or below the EU CBAM benchmark.
• Carbon price already paid, if any, with supporting documentation.
• A verification report from an EU-accredited CBAM verifier covering the reporting period.

2026 Action 2 — Build a One-Year Supplier Data Pipeline

Chinese suppliers vary widely in carbon-data readiness. Large mills and listed exporters often have energy-consumption records and ISO 50001 data; smaller downstream processors may have almost nothing. Because the first surrender is not due until 30 September 2027, 2026 is the year to build the pipeline rather than panic.

Practical steps:

• Start with your top 20% of CBAM-exposed suppliers by spend or volume.
• Ask for 2025 calendar-year data first — it is usually available and gives you a baseline.
• For complex goods, trace the precursor: the steel in a fastener, the aluminium in an extrusion, the cement in a concrete article.
• Do not accept a generic corporate carbon report; CBAM needs installation-level product data.
• Introduce a verified-data clause in your supplier agreement now, with a deadline before the 2027 declaration.

2026 Action 3 — Document Your Exemption or Register as Declarant

If you expect to stay under 50 tonnes of CBAM goods in 2026, document the calculation and be ready to show it. Customs can ask for evidence, and consignment-splitting to evade the threshold is explicitly prohibited.

If you exceed the threshold — or if you import hydrogen or electricity — you must become an authorised CBAM declarant in the EU member state where you are established. Authorisation is handled through the national competent authority and the CBAM registry. You cannot buy or surrender certificates without it.

The Documentation Trap: Verified Data or Default Values

The difference between verified data and default values is not administrative — it is financial. Actual emissions reports must come from an EU-accredited verifier. If you rely on defaults, you accept both a mark-up and a weaker negotiating position with EU customers who increasingly demand verified carbon data.

Treat CBAM documentation like a technical file: keep it for at least ten years, link it to each customs entry, and reconcile it with your annual declaration. The importer who has clean, supplier-backed data in 2026 will avoid the 2027 scramble and can quote EU customers with confidence.

References

• Regulation (EU) 2023/956 establishing the Carbon Border Adjustment Mechanism — EUR-Lex
• European Commission, Taxation and Customs Union, "Carbon Border Adjustment Mechanism — CBAM definitive regime (from 2026 onwards)" — taxation-customs.ec.europa.eu
• European Commission, CBAM Goes Live: Guidelines for Operational Procedures for 1 January 2026, 19 March 2026 — taxation-customs.ec.europa.eu
• European Commission, "CBAM De Minimis Threshold Assessment", 30 September 2026 — taxation-customs.ec.europa.eu
• DG TAXUD, CBAM Guidance No. 1 — Introduction to CBAM concepts, 14 August 2026.
• CBAM Guide 2026, "EU CBAM Guide 2026: The Carbon Border Adjustment Mechanism" — sector coverage and embedded-emissions benchmarks.