For two years, CBAM was a reporting drill. Quarterly numbers, no money, low stakes. That era is over. Since 1 January 2026, the EU's Carbon Border Adjustment Mechanism is in its definitive period — no longer a data-collection exercise, but a carbon price at the EU border. And for iron and steel — the sector with the widest product scope and the highest embedded emissions — it is where the money will be.
If you make steel or steel products and sell into Europe — directly, or as a supplier to a company that does — CBAM is now a commercial variable, not a compliance footnote. Here is the strategy you actually need. (EU: Introduction to CBAM concepts.)
First, what changed in 2026 (60-second reset)
If your knowledge of CBAM is based on the 2023–2024 guidance, update it. The Omnibus simplification (Regulation (EU) 2025/2083, in force since October 2025) reshaped the rules:
- The old €150-per-consignment exemption is gone. It is replaced by a single 50-tonne per-importer, per-year mass threshold across iron & steel, aluminium, fertilisers and cement. Below it, no CBAM obligations. Above it, full obligations.
- Certificate sales start 1 February 2027 — not 2026. No cash leaves in 2026, but the liability is accruing from day one.
- First annual declaration and certificate surrender: 30 September 2027, covering all 2026 imports.
- The quarterly holding requirement was cut from 80% to 50% of accrued emissions.
- New default values apply (Implementing Regulation (EU) 2026/1740), and verification is only required when you use actual emission values.
The paperwork got lighter, but the price signal got real.
Who is actually in scope — a concrete example
Forget the giant integrated mill for a moment. Picture a more common business: a non-EU OEM that machines small steel engineering parts — brackets, housings, fasteners, sub-assemblies — and ships them to a larger EU manufacturer that builds them into finished machines.
Those parts sit in CN Chapter 73 ("articles of iron or steel"). They are CBAM goods. If that OEM ships more than 50 tonnes a year into the EU (most regular suppliers do), its EU customer now carries a CBAM cost tied to the embedded emissions of those parts — and will come asking the OEM for the data behind them. That request is the moment CBAM stops being someone else's problem.
Who does what — the CBAM data & compliance flow
Emissions data travels down the chain; the reporting and payment obligation sits with the EU importer.
Accredited verifier sits alongside the exporter: verification is required only when actual emission values are used (default values need no verification).
The obligation legally sits with the EU importer (the "authorised CBAM declarant"). But the data they need can only come from you. In practice, whoever controls the emissions numbers controls the cost. (EU: Quick guide for non-EU operators.)
The core idea in plain English
CBAM prices embedded emissions — the emissions released producing your goods. Three parts matter:
- Direct emissions: from your own production process (furnaces, fuels, reactions).
- Indirect emissions: from the electricity you consumed.
- Precursor emissions: the embedded emissions of the steel inputs you bought (crude steel, pig iron, DRI, ferro-alloys).
Your production route is the anchor. The EU has set official steel benchmarks: roughly 1.370 tCO₂e per tonne for blast-furnace (BF-BOF) steel, 0.481 for gas-based DRI-EAF, and just 0.072 for scrap-based EAF. High recycled-scrap content is a genuine structural advantage — scrap carries zero embedded emissions under the methodology.
The one decision that drives your cost: actual data vs default values
This is the strategic heart of CBAM for steel. If you supply verified actual emissions, your EU customer pays on your real footprint. If you don't, they must use default values — set deliberately high (well above the benchmark), and carrying a mark-up that climbs from 10% in 2026 to 20% in 2027 and 30% from 2028. Here is the gap, illustrated per tonne of steel product, at the Q1 2026 certificate price of €75.36/tCO₂e (EU: price of CBAM certificates).
Verified data vs default values — the cost gap
The single biggest lever an exporter controls. Illustrative example, per tonne of steel product.
Why the net number looks small in 2026: only the phased-out share of EU free allocation is charged. In 2026 the CBAM factor is ~2.5%, so net ≈ €3.4/t (verified) vs €6.2/t (default). The gap, not today's absolute cost, is the point — and it scales every year (see Figure 4).
On 500 t/yr, the verified-vs-default gap is ~€1.4k in 2026 → ~€27k by 2030 → ~€57k by 2034. Verified data turns a penalty into a competitive advantage.
A supplier who cannot produce credible numbers is effectively taxed on someone else's worst-case emissions. Verified data is the difference between being the expensive supplier and the preferred one. (See EU Guidance No. 3: calculation of embedded emissions and Guidance No. 4: the free-allocation adjustment.)
What the OEM should actually do
Strategy only matters if it turns into steps. For a non-EU steel supplier, the path is clear.
What a non-EU steel OEM should actually do
Example: a supplier machining small steel engineering parts (CN Chapter 73) for a larger EU manufacturer.
Note step 7 carefully: if your country prices carbon and you can prove it, that reduces the EU-side cost. That is a negotiating asset with your buyer. (EU: verification of CBAM emissions.)
Why "it's tiny in 2026" is the trap
The most dangerous misreading of CBAM is looking at 2026 and relaxing. In 2026, EU steelmakers still keep about 97.5% of their free ETS allowances, so only ~2.5% of the embedded emissions is actually charged. The net cost per tonne looks trivial. It does not stay trivial.
Why "small today" is a trap — the 2026→2034 ramp
Bars show the share of embedded emissions actually charged (the CBAM factor) as EU free allocation is withdrawn.
Free allocation phases out from ~97.5% (2026) to 0% (2034); percentages are indicative of the charged share.
Free allocation is withdrawn on a fixed schedule — from ~97.5% shielded in 2026 to zero in 2034. The charged share climbs to roughly half by 2030 and 100% by 2034. The exporter who builds a verified emissions capability now, while the stakes are low, walks into 2030 with a priced-in advantage. The one who waits gets repriced by default values at exactly the moment the numbers get big.
The strategic takeaways
- Treat CBAM data like financial data — with owners, procedures and an audit trail from the furnace to the customer.
- Make verified actual emissions a product feature. It is now a procurement criterion for EU buyers, not a nice-to-have.
- Lean into low-carbon routes and scrap content — the methodology rewards them explicitly.
- Capture your domestic carbon price. If you pay one, don't leave the Article 9 deduction on the table.
- Start before your buyer asks. The first supplier with clean, verified numbers becomes the default choice; the last one becomes the default value.
CBAM will reward the iron & steel businesses that can prove how clean they are — and quietly penalise those that can't. In this market, your emissions data is becoming as commercially important as your price and your lead time.
At OffsetEase, we help iron & steel producers and exporters turn CBAM from a cost into an edge — mapping production routes, building verified emissions data your EU customers can rely on instead of default values, and capturing Article 9 carbon-price deductions where you already pay a carbon price at home. If you're working out your CBAM position, let's talk.