Steel and the Carbon Border: An Executive Analysis of CBAM’s Definitive Phase

by Commodity Inside / Wednesday, 17 June 2026 / Published in Steel

On January 1, 2026, the European Union’s Carbon Border Adjustment Mechanism (CBAM) moved from a reporting exercise into a live financial liability. For the global steel industry — the largest single sector by trade volume within CBAM’s scope — this is the most consequential change to cross-border competitiveness since the EU Emissions Trading System (ETS) itself launched two decades ago. Importers of steel into the EU must now quantify embedded emissions, hold CBAM certificates priced against EU carbon allowances, and surrender them against actual import volumes, with the first certificate sales beginning in February 2027 for emissions incurred during 2026.

Critically, CBAM is not arriving alone. The EU has simultaneously finalised a sweeping overhaul of its steel trade safeguard regime, cutting duty-free import quotas by roughly 47% and raising out-of-quota tariffs to 50%, effective July 1, 2026. Together, the carbon mechanism and the trade mechanism represent a coordinated industrial policy: one prices carbon, the other restricts volume, and both are explicitly designed to protect a EU steel sector that has lobbied hard, and largely successfully, for protection against what it characterises as structural global overcapacity and uneven carbon costs.

For steel producers, traders, and downstream manufacturers anywhere in the world with EU exposure, the strategic question is no longer whether this regulatory architecture will affect their cost base — it already does — but how quickly they can build the emissions data infrastructure needed to avoid the punitive default values that apply to anyone who cannot prove otherwise.

From Reporting to Liability: What Changed on January 1, 2026

CBAM was never a single event; it is a multi-year phase-in that began with a transitional reporting-only period running from October 2023 through the end of 2025. During that window, importers of iron, steel, aluminium, cement, fertilisers, hydrogen, and electricity into the EU had to report embedded emissions quarterly but faced no financial obligation.

That changed at the start of 2026. The definitive phase introduces:

Certificate obligations tied to actual emissions. Authorised CBAM declarants must hold certificates covering at least 50% of embedded emissions accrued to date by the end of each quarter from 2027 onward — a threshold reduced from an originally planned 80% as part of the EU’s broader “Omnibus” simplification package adopted in October 2025.
Quarterly, then weekly, certificate pricing. For 2026, the European Commission publishes a single CBAM certificate price each quarter, calculated as the volume-weighted average of EU ETS auction prices for that quarter. The Q1 2026 price was set at €75.36 per tonne of CO2 — equivalent to roughly $89.64 at prevailing exchange rates. From 2027, pricing shifts to a weekly cycle, tightening the link between certificate cost and real-time carbon market movements.
First certificate sales and surrender. Certificate sales via the EU’s common central registry begin February 1, 2027, with the first surrender obligation — covering emissions embedded in goods imported throughout 2026 — due by September 30, 2027.
A widened simple-versus-complex goods distinction. For “simple” goods with no precursor inputs carrying embedded emissions (including basic steel), importers must report actual embedded emissions directly. For complex goods — finished steel products with upstream inputs — emissions from precursors must also be accounted for, often requiring verified data from multiple tiers of a supply chain.

The mechanics matter enormously to cost exposure. At an EUA price near €70-75/tonne and a typical embedded emissions intensity of roughly 1.8-1.85 tonnes of CO2 per tonne of conventional blast-furnace/basic-oxygen-furnace (BF-BOF) steel, CBAM adds in the order of €130-140 per tonne to landed cost for unabated steel — a figure that scales directly with both the carbon price and the production route’s emissions intensity, meaning electric-arc-furnace (EAF) and scrap-based steel face materially lower exposure than primary BF-BOF steel.

The Verification Gap: Why Data Quality Is Now a Competitive Weapon

CBAM’s design creates a stark divide between exporters who can prove their actual emissions and those who cannot. Where actual, third-party-verified emissions data is unavailable, the European Commission applies default values — and those defaults are explicitly set at the highest emissions intensity observed for comparable production routes, with no benefit of the doubt extended to unverified producers.

The financial consequences of this gap are now visible in real default-value pricing. Reported figures based on Q1 2026 default values include exposure of roughly €148 per tonne for Algerian steel, around €100 per tonne for Turkish steel, and approximately €94 per tonne for Vietnamese steel — each reflecting the punitive ceiling applied in the absence of verified, supplier-specific data. Turkey’s exposure is particularly significant given its position as the EU’s largest single external steel supplier; without verified data, even efficient Turkish producers are priced as though they ran the least efficient process in their peer group.

Verification itself is non-trivial. To substitute actual emissions data for default values, producers must undergo accredited third-party verification, including an on-site audit in the first compliance year, and must demonstrate accuracy within a 5% variance threshold. Capacity among accredited verification bodies is tightening just as demand for verification surges — meaning producers who delay building this infrastructure risk being locked into default-value pricing not by choice but by queue position.

For EU importers and the non-EU mills that supply them, this transforms emissions measurement, monitoring, and verification (MRV) capability from a sustainability reporting function into a direct driver of landed cost and competitive position. Mills that can supply verified, facility-specific emissions data — particularly EAF operators and BF-BOF producers with carbon capture or efficiency investments — gain a structural cost advantage over peers who cannot, independent of their actual production cost base.

The Domestic Mirror: Free Allocation Phase-Out

CBAM’s stated purpose is to apply to imports the same carbon cost that EU domestic producers already bear under the EU ETS. But until 2026, the comparison was not as direct as it sounds, because EU steelmakers historically received the large majority of their ETS allowances for free, specifically to protect them from carbon leakage in the absence of a border mechanism.

That free allocation is now being wound down on a fixed schedule running from 2026 to 2034, governed by a “CBAM factor” that determines what percentage of a domestic producer’s free allocation is withdrawn each year. The factor starts at 2.5% in 2026, meaning EU producers retain the vast majority of their free allocation in the early years, but climbs steadily until it reaches 100% in 2034 — at which point EU steelmakers will purchase allowances for the full volume of their emissions, just as importers will need full certificate coverage. A domestic steelmaker that received 1,000 free allowances in 2025, for example, receives only 975 in 2026 and 950 in 2027, with the reduction compounding each subsequent year.

This phase-out is the mechanism’s internal logic for fairness: as EU producer costs rise through the loss of free allocation, importer costs rise in parallel through increasing certificate obligations, intended to hold the relative competitive position between domestic and imported steel roughly constant even as the absolute carbon cost facing the entire EU market rises. Whether that parity holds in practice is one of the most contested questions in the policy’s design — and it is the central reason European steel producers, through their trade association Eurofer, have pushed hard for additional protective measures alongside CBAM itself.

The Industry’s Verdict: Necessary, but Incomplete

Eurofer’s public position has been consistent and pointed: CBAM should proceed on schedule, but its current design contains gaps serious enough to undermine its core objective. The association has highlighted several structural concerns:

No protection for EU exports. CBAM addresses imports into the EU but does nothing to protect EU steel exporters competing in third-country markets, where they face the full domestic carbon cost with no equivalent border adjustment working in their favour. Eurofer has pushed for a structural export solution; the Commission’s response so far has been a proposed temporary decarbonization fund intended to partially reimburse exporters for free-allowance losses in 2026-2027, rather than a permanent rebate mechanism, which the Commission has explicitly declined to include.
Resource shuffling risk. Because CBAM (in its current form) counts only finishing-stage emissions for steel and aluminium precursors by default under recent simplifications, there is a documented risk that exporters route low-carbon-labelled material through the EU while diverting higher-carbon production to other markets — a form of accounting arbitrage that does not reduce actual global emissions.
Scope gaps further down the value chain. Until recently, CBAM stopped at basic and lightly processed steel and aluminium products, creating an incentive to relocate the next stage of manufacturing — machinery, vehicle components, appliances — outside the EU and import the finished good instead, sidestepping the carbon price entirely.

The Commission’s response to that third concern arrived in December 2025: a proposal to extend CBAM’s scope, from January 1, 2028, to roughly 180 additional downstream products with high steel or aluminium content. The expansion would draw in an estimated 7,500 additional importers and cover goods averaging around 79% steel or aluminium content by weight — predominantly heavy machinery, base metal fittings, fabricated metal goods, and industrial equipment, with a smaller share of household appliances such as washing machines and refrigerators. The proposal also introduces provisions for mutual recognition of accreditation bodies and incorporates pre-consumer steel and aluminium scrap into CBAM emissions calculations, intended to reward circularity. The expansion still requires approval through the EU’s ordinary legislative procedure before it can take effect.

The Parallel Track: A New Steel Safeguard Regime

Running alongside — and in some ways overshadowing — CBAM’s carbon pricing mechanics is a separate and more immediately disruptive policy: a wholesale overhaul of the EU’s steel import safeguard regime, finalised via provisional political agreement between the European Parliament and Council on April 13, 2026, and intended to take effect July 1, 2026, replacing a safeguard structure that had been in place since 2018.

The new framework is substantially more restrictive than its predecessor:

Tariff-free quotas cut by roughly 47%, down to 18.3 million tonnes annually, compared with 2024 safeguard quota levels.
Out-of-quota duty doubled, from 25% to 50% ad valorem on any import volume exceeding the allocated quota.
A new “melt and pour” country-of-origin requirement, meaning steel must be traced to where it was actually melted and cast, not merely where it underwent final processing — directly targeting transhipment and minor-processing circumvention strategies that have proliferated as exporters sought to route around existing quotas.
Quarterly, non-cumulative quota administration, closing the practice of stockpiling import volume in slow quarters to release in concentrated bursts later in the year.
Expanded product scope, growing from 28 to 30 covered categories, including new TARIC codes introduced in April 2026 specifically to capture reinforcing steel products that had migrated into adjacent classification codes — one such code saw import volumes increase by approximately 250% year-on-year in 2025, a textbook case of classification-based circumvention that regulators moved quickly to close.

A parallel and even sharper tightening applies specifically to stainless steel from July 2026, where tariff-free import volumes fall by an estimated 53-65%, hitting South Korean and Taiwanese cold-rolled and hot-rolled coil exporters hardest — out-of-quota volumes represent a meaningful share of both countries’ annual production for the affected categories. The same melt-and-pour logic disproportionately affects countries with no domestic crude stainless steelmaking capacity, such as Turkey, Vietnam, Thailand, and Malaysia, which have historically imported semi-finished stainless steel for re-export to the EU after minimal processing.

This safeguard package was formally bundled by the Commission into a broader Steel and Metals Action Plan, adopted in April 2026, which frames the EU steel sector explicitly as a matter of economic security rather than purely industrial policy — a framing that signals the protective posture is likely to persist and potentially intensify regardless of how CBAM’s carbon-pricing mechanics evolve.

For importers, the practical implication is that carbon cost (CBAM) and volume restriction (the safeguard) now operate as two independent constraints that must be modelled together. A supplier with excellent verified emissions data and low CBAM exposure can still be locked out of the EU market entirely if the relevant tariff quota is exhausted, while a supplier within quota can still face significant CBAM certificate costs if its emissions intensity is high or unverified.

The Global Ripple Effect

CBAM’s significance extends well beyond the EU’s own borders, both because it is reshaping where steel trade flows and because it is catalysing similar policy responses elsewhere:

The United Kingdom will introduce its own CBAM from January 1, 2027, covering iron and steel, aluminium, cement, fertiliser, and hydrogen (glass and ceramics were excluded from the initial scope, and electricity is not covered). The UK’s approach deliberately trails the EU’s by roughly a year, allowing UK policymakers to absorb lessons from the EU’s early implementation challenges, with a registration threshold set at £50,000.
Norway has signalled plans for a parallel CBAM aligned with the EU timeline, while Canada, Australia, Brazil, and Taiwan are each reported to be actively considering similar border carbon mechanisms, and Turkey has explored the concept as both a potential adopter and, simultaneously, one of the countries most exposed to the EU’s version as an exporter.
China expanded its national emissions trading scheme in March 2025 to formally cover the same sectors CBAM targets — aluminium, cement, and steel — a move widely interpreted as at least partly defensive, designed to give Chinese producers a domestic carbon price they can point to when contesting CBAM default-value treatment, since CBAM allows deduction of carbon prices already paid in the country of production.
Trade flow realignment is already visible. Steel volumes that might otherwise have flowed toward the EU are increasingly being redirected toward markets without equivalent carbon or volume constraints, while EU buyers — particularly automotive OEMs and machinery manufacturers — are reassessing supplier qualification criteria to weight verified low-carbon emissions intensity alongside traditional cost and quality metrics, integrating CBAM exposure directly into supplier scorecards.

The cumulative effect is the emergence of a genuinely bifurcated global steel market: a “verified low-carbon” tier increasingly able to access the EU, UK, and eventually other CBAM-adopting markets on favourable terms, and a “default-value” tier facing structurally higher costs and, independent of CBAM, tightening volume access through safeguard measures.

Risks and Open Questions

Several material uncertainties remain live for any organisation building a multi-year strategy around this regulatory architecture:

Carbon price volatility directly drives CBAM cost volatility. EUA prices moved from above €90/tonne in January 2026 to the low €60s by mid-March amid policy uncertainty ahead of ETS reform, before recovering to around €70-72 by spring — a swing of roughly 30% within a single quarter that flows directly into CBAM certificate pricing and, from 2027, will do so on a weekly rather than quarterly basis, compressing the window available for cost pass-through planning.
The export-leakage gap remains unresolved. Without a structural mechanism protecting EU steel exports, and with only a temporary decarbonization fund as a stopgap, EU producers may continue to face a competitiveness disadvantage in third markets that CBAM does nothing to address — a gap that could blunt the policy’s stated decarbonization objective if it pushes EU production volume, rather than emissions, offshore.
WTO compatibility remains a background risk for both instruments. The Commission has stated its intent to negotiate the new steel safeguard’s compatibility with WTO rules through Article XXVIII proceedings, and CBAM itself has faced sustained criticism from trading partners — including formal opposition from Korean industry bodies and steel producers — over its consistency with international trade law, leaving open the possibility of future disputes or required design changes.
Implementation timing for the downstream expansion is not yet final. The 180-product downstream expansion remains a legislative proposal subject to the EU’s ordinary legislative procedure; its scope, timing, and final product list could still shift materially before any 2028 implementation date.
Fertiliser-style carve-outs set a precedent for political flexibility. Commission signals around potentially suspending CBAM’s application to fertilisers in response to farmer cost concerns illustrate that sector-specific exemptions remain politically live, raising the question of whether sustained industry or political pressure could similarly soften steel-specific provisions in the future.

Strategic Implications for Executives

Treat emissions verification as a procurement and trade-compliance priority, not a sustainability side-project. With default values calibrated to the worst-performing comparable producer, any supplier — EU or non-EU — that cannot supply third-party-verified, facility-specific emissions data is leaving substantial cost on the table relative to peers who can, and verification capacity bottlenecks mean the time to start this process is now, not at the next compliance deadline.
Model CBAM and the steel safeguard as independent, compounding constraints. A sourcing strategy optimised only for carbon cost exposure under CBAM, without separately modelling tariff-rate-quota exhaustion and melt-and-pour origin requirements under the new safeguard, will understate real landed-cost risk and could expose buyers to supply disruption even where CBAM costs are manageable.
Reassess supplier qualification criteria to weight production route, not just price. EAF and scrap-based steel’s structurally lower embedded emissions intensity translates directly into lower CBAM exposure; buyers building long-term supply agreements should weigh this factor explicitly rather than treating it as a secondary consideration to unit price.
Build weekly-pricing readiness ahead of the 2027 transition. The shift from quarterly to weekly CBAM certificate pricing meaningfully compresses the planning window for cost pass-through and hedging; finance and procurement teams should pressure-test their systems and contractual pass-through mechanisms against this cadence well before it takes effect.
Track the downstream expansion proposal closely if your business touches machinery, appliances, vehicle components, or fabricated metal goods. Companies currently outside CBAM’s scope because they sell finished, steel-intensive goods rather than raw or semi-finished steel should not assume that exemption is permanent; the 2028 target date for the 180-product expansion leaves a finite window to prepare data systems and supplier documentation.
Engage proactively rather than reactively with the export-leakage question. Companies with significant EU steel export exposure should monitor the evolution of the temporary decarbonization fund and any successor mechanism closely, since the absence of a permanent structural solution remains one of the largest unresolved variables in the EU steel policy framework.

Outlook

CBAM’s definitive phase, layered onto a sharply tightened steel safeguard regime, marks the point at which EU climate policy and EU trade policy have become operationally inseparable for the steel sector. The direction of travel is unambiguous: carbon costs on imported steel will rise as free allocation continues its scheduled phase-out through 2034, volume access will tighten further as the new safeguard regime beds in from July 2026, and the scope of what counts as “steel” for border-adjustment purposes is likely to widen substantially as the proposed downstream expansion moves through the legislative process toward a 2028 target.

For producers and traders with verified, low-carbon production credentials, this architecture is becoming a genuine source of competitive advantage rather than a pure compliance burden. For those without it, the combination of punitive default values, a doubled out-of-quota tariff, and an active legislative pipeline aimed at closing remaining loopholes leaves a narrowing set of viable strategies — most of which now run through the same starting point: investing in the data infrastructure needed to prove, rather than assume, a low-carbon footprint.