The CBAM is a direct levy, not a certificate scheme

The CBAM is a direct levy, not a certificate scheme

The UK CBAM is structurally different from the EU version, and this matters for how you budget. Rather than being based on certificates – bought and traded on exchanges - the UK CBAM will be a direct levy system. This means that the carbon cost placed on aluminium will be set as a fixed monetary charge per tonne of embedded emissions, rather than fluctuating with market dynamics. That is a double-edged design. You get predictability the levy will not swing with EU ETS auction prices. But you lose the arbitrage flexibility EU importers have. Once HMRC sets the rate for a given period, that is your cost. There is no hedging strategy. Cfp

Scope covers steel, aluminium, cement, fertiliser and hydrogen at launch. The inclusion of indirect emissions within scope of the UK CBAM will be delayed until 2029 at the earliest, which is a small mercy scope 2 electricity emissions from Asian aluminium smelters running on coal would have doubled the effective levy on primary aluminium. GOV.UK

The July 2026 safeguard is the first hammer blow

Before CBAM even lands, the trade defence measure takes effect. On 1st July 2026, quota levels for steel imports will be significantly reduced by 60% compared to current arrangements, and steel coming into the UK above these levels will be subject to a 50% tariff. This is not a subtle policy nudge. It is a hard wall designed to force buyers back to domestic mills. Tadweld

The government's stated purpose is capacity restoration raising UK production to 50% of national demand from the current 30%. That is a defensible strategic aim. The problem is timing. The Confederation of British Metalforming, which represent the interests of more than 75,000 employees at 200 companies involved in the production of fasteners, forgings, sheet metalwork and cold rolled products, has flagged that the domestic capacity to substitute simply is not there yet for the grades their members need. The Manufacturer

The cost stack, modelled

The research shows that UK hot-rolled structural steel sections are expected to rise from circa €780 per tonne to over €1,000 per tonne once a new 50% import tariff and carbon pricing are fully reflected, pushing it significantly above its nearest competitors on a like-for-like basis. That is a ~28% increase on a commodity input. Tadweld

Layer in the CBAM. Independent estimates put the embedded carbon cost at GBP80-GBP200 per metric tonne depending on origin country and product. Chinese blast furnace steel will sit at the top of that band. Indian steel similar. Turkish scrap-based electric arc steel much lower. Domestic UK electric arc production the lowest of all, which is the point. Tokio Marine HCC

Where domestic substitution collapses

This is the piece most commentators miss. The CBAM is defensible only if UK mills can supply what UK metalworkers need. They cannot, at least not yet. The whole backbone of the strategy appears to be on Speciality Steels in Stocksbridge being up and running by the third quarter, yet even insiders working within the business suggest production will not fully start until 2027. The Manufacturer

For specialist grades aerospace-qualified nickel alloys, high-carbon spring steels, deep-drawing automotive grades, high-tensile fastener wire the honest position from CBM is that in the medium to long-term we still have no viable route to buy the right grades of steel we need from a UK mill. Fabricators supplying primes and OEMs will pay the tariff and the CBAM levy, or they will lose the contract to a competitor abroad. The Manufacturer

Sector-by-sector exposure

Aerospace: worst hit. Specification-driven, low tolerance for substitution, long qualification cycles. A Tier 1 or Tier 2 supplier cannot simply switch to a different steel grade because it is now cheaper. Expect margin compression unless price rises can be passed to primes.

Automotive: mixed. Volume steel for body-in-white can substitute more easily, but the transition to EV means aluminium exposure is rising fast. With aluminium covered by CBAM, exporters to the UK and EU must disclose and pay for embedded carbon, raising input costs across automotive, aerospace, and packaging sectors. Cfp

Defence: broadly protected MoD contracts have UK-content preferences and can absorb costs but forgers and heat treaters in the supply chain still face input-cost pressure.

Construction: exposed to the structural steel price jump. Fabricators building steel-framed buildings will need to reprice quotes for any 2027-delivery work now. There may also be contractual considerations as parties consider how UK CBAM costs are reflected in long term framework agreements or projects spanning 2027 onwards. TLT LLP

General fabrication and sheet metalwork: the squeeze is real. Small and medium fabricators lack the buying power to negotiate around cost increases and lack the balance sheet to absorb them.

The downstream loophole is a real risk

Watch this one. CBAM's limited downstream sector coverage also incentivises importing downstream products to avoid CBAM liabilities. This could create opportunities for non-EU producers and adversely impact EU producers unless addressed by future policy changes. Translation: if you import a finished bracket, welded assembly or stamped part, you pay no CBAM. If you import the steel to make it here, you do. Fastmarkets

This is a direct incentive to hollow out UK fabrication. The EU has spotted this and is proposing to expand CBAM to 180 downstream products sectors that would be impacted by the proposed changes include machinery, hardware and fabrications, vehicle components, domestic appliances, and construction equipment. The UK has not yet committed to the same expansion. Until it does, some of your customers will consider offshoring assembly to avoid the levy on inputs. Push HMRC and the CBM to lobby for downstream inclusion otherwise the policy backfires on the industry it is meant to protect. Akin Gump Strauss Hauer & Feld LLP

Scrap and electric arc — the quiet winner

Scrap product is currently exempt from CBAM, which structurally favours UK electric arc furnace producers over blast furnace imports. British Steel's Scunthorpe transition, Celsa's Cardiff EAF operation, Liberty Steel's Rotherham electric arc route all benefit. If you buy steel, prioritise EAF-produced supply where specification allows. Lower embedded carbon means lower CBAM exposure both now and when Scope 2 kicks in from 2029. Fastmarkets

British Industrial Competitiveness Scheme — the delayed offset

The UK government has also launched a new British Industrial Competitiveness Scheme with the aim of reducing electricity costs by up to GBP40 per MWh for over 7,000 electricity intensive companies. This could lead to a 25% price cut for eligible businesses. Timing: it will take until spring 2027 before the scheme will become operational. Tokio Marine HCCTokio Marine HCC

Critical detail eligibility criteria are still being finalised. If your operation runs induction furnaces, resistance heating, plasma cutting, or heavy machining with continuous high electrical load, get onto the consultation now. The scheme will materially change the economics of UK metalworking if you qualify. If you do not, you are paying G7-highest electricity prices with a CBAM levy on top.

Compliance burden is non-trivial

CBAM is not just a price rise. It is an accounting regime. You need embedded emissions data from every non-UK supplier for CBAM-scope inputs. Suppliers in China, India, Turkey and Vietnam vary enormously in their capacity to provide verified emissions data. Expect months of pushback, default emissions factors applied punitively where data is missing, and audit costs.

Six things to do before Q4 2026

One audit your bill of materials. Flag every CBAM-scope input by mass, origin country and supplier. This is the foundation for everything else.

Two reprice all 2027 delivery contracts. Any quote you have out that delivers past January 2027 without a CBAM pass-through clause is a margin risk. Include an explicit CBAM adjustment clause in new contracts.

Three lock supply agreements before 14 March 2026 transitional cutoff where possible. A proposed transitional arrangement could exempt some goods under contracts agreed before 14 March 2026 for a limited period. Tadweld

Four shift procurement toward UK EAF steel and lower-carbon origins (Turkish scrap-based, EU EAF) where specification permits. Get supplier emissions declarations on file now.

Five apply for British Industrial Competitiveness Scheme eligibility as soon as the consultation closes. Do not wait for the operational launch in spring 2027.

Six stress-test H1 2027 margins against a 15–25% raw material inflation scenario. Model both a base case (CBAM at £80/t) and a downside case (£200/t on high-carbon imports). Identify which product lines become loss-making and either reprice, redesign or exit them.

Final word

The 2027 CBAM story is not really a carbon policy story. It is an industrial strategy story dressed as climate policy. The government is deliberately raising the cost of imported metal to give UK mills breathing room to modernise. Whether that works depends on whether Speciality Steels comes online on schedule, whether the British Industrial Competitiveness Scheme delivers real electricity price relief, and whether HMRC closes the downstream import loophole. If any of those three fail, the UK metalwork sector eats the cost with no offset. Plan accordingly.

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