Europe’s Carbon Tariff Hit ‘Phase Two’ on Jan. 1, 2026—Here’s the Invoice Nobody Budgeted For (and why U.S. exporters may pay it anyway)
CBAM’s definitive regime starts in 2026, but the first big cash moment—certificate surrender for 2026 imports—lands in 2027. The real 2026 fight is data, classification, and contract leverage.
Key Points
- 1Mark the real timeline: CBAM compliance starts Jan. 1, 2026, but the first certificate surrender for 2026 imports lands Sept. 30, 2027.
- 2Assume costs move upstream: EU importers are legally liable, yet contracts, pricing pressure, and data demands can make U.S. exporters pay anyway.
- 3Win with proof, not slogans: CN-code scope checks, installation-level emissions data, and explicit CBAM clauses decide who keeps EU customers in 2026.
Phase Two of Europe’s Carbon Border Adjustment Mechanism arrives on January 1, 2026, and many U.S. exporters have already penciled it in as “the year Europe starts charging carbon tariffs.”
That shorthand is understandable—and wrong in ways that matter for budgets, contracts, and supply-chain decisions.
January 1, 2026 is the start of CBAM’s definitive compliance regime. It is the day the system becomes more than a reporting exercise. But the largest, most visible cash outflow—buying and surrendering CBAM certificates—has been structured so that the first annual declaration and surrender covers 2026 imports and is due on 30 September 2027 under the EU’s 2025 “omnibus” amendment (Regulation (EU) 2025/2083). In other words: 2026 creates the liability; 2027 is when the bill is paid.
That distinction will not comfort companies that sell carbon-intensive goods into Europe. It does, however, change what preparation looks like. The immediate 2026 challenge is less about writing a check and more about building an evidence trail: customs classification, emissions data, verification pathways, and contract terms that decide who ultimately eats the cost.
“CBAM’s definitive regime starts in 2026—but the first surrender of certificates for 2026 imports is due in 2027. The liability arrives before the invoice.”
— — TheMurrow Editorial
What “Phase Two” really means on January 1, 2026
The timeline is where even sophisticated businesses get tripped up. The EU built CBAM in two stages:
- Transitional period (reporting-only): October 1, 2023 → December 31, 2025. Importers reported embedded emissions; no certificates were purchased. The reporting framework is set out in the implementing rules (Implementing Regulation (EU) 2023/1773).
- Definitive period (compliance regime): begins January 1, 2026. CBAM becomes a full compliance architecture, built around authorized status, annual declarations, and certificates as the compliance instrument.
The crucial nuance: “goes live” is not the same as “pay now”
That does not mean 2026 is a free year. The year 2026 is when:
- the definitive rules govern imports,
- administrative compliance expectations harden,
- and importers begin structuring their systems so that the 2026 embedded emissions can be declared and surrendered later.
Who legally pays CBAM—and why U.S. exporters may still feel the hit
That is the legal incidence. The economic incidence is where U.S. exporters should focus.
How costs travel upstream
- Contract terms and Incoterms: Delivered terms can shift cost and responsibility. Even under seller-friendly structures, sophisticated buyers can write “who pays CBAM” clauses or carbon-cost adjustment provisions into supply agreements.
- Pricing pressure: If European buyers face new compliance costs, they frequently seek discounts. In competitive commodity markets, “we’ll buy if you net out the CBAM effect” is a predictable negotiating position.
- Data burdens: The EU importer cannot report accurately without producer data. The Commission’s CBAM Registry is built to allow non‑EU operators to upload and share information with declarants—an explicit signal that suppliers will be pulled into the compliance process.
“CBAM is legally an importer obligation. Economically, it behaves like a supply-chain tax: the party with the weakest negotiating leverage often absorbs it.”
— — TheMurrow Editorial
A practical reality: your customer’s compliance is now your sales requirement
That is not rhetoric. It is how border measures function when enforcement sits with the importer but proof sits with the producer.
What goods are covered—and why “we don’t sell steel” may not save you
The core covered sectors are the familiar six:
- Cement
- Iron & steel
- Aluminium
- Fertilisers
- Electricity
- Hydrogen
Those categories come straight from EU CBAM design and are repeatedly summarized in legal and trade briefings.
Scope is a customs question before it is a climate question
A U.S. company may not think of itself as exporting “iron and steel” if it sells processed inputs or intermediate products. But CBAM scope in metals can include certain downstream/processed items, depending on how a product is classified at the border. A business that exports fabricated components, semi-finished forms, or specialized metal products can land inside the regime even if the internal language on the sales floor never uses the word “steel.”
Case example: the classification trap
- Does the EU importer have authorized declarant status?
- Can the producer supply emissions data at installation level?
- What happens if the supplier cannot provide the data in time?
The most expensive CBAM mistake can be made before a single certificate is purchased: shipping covered goods under a compliance plan built for uncovered goods.
The costs that begin in 2026—even if the cash payment comes later
1) Compliance and administration
2) Carbon certificates (later surrendered against embedded emissions)
The second bill gets the headlines. The first bill is what many firms failed to budget during the reporting-only transitional period.
Administrative reality: the definitive regime means authorization and systems
That authorization architecture has downstream consequences for suppliers. If an EU customer has not secured authorization—or is not prepared to manage the data flows—procurement teams will often reduce risk by shifting volume to suppliers that can support compliance.
Data is not “nice to have” anymore
Expect EU importers to request:
- installation-level emissions data,
- documentation supporting methodologies,
- and the right to audit or verify.
The Commission’s own registry design anticipates this upstream burden by enabling non‑EU operators to upload and share data.
The hidden supply-chain negotiation: data quality becomes a commercial term
A supplier that cannot provide emissions data forces an EU importer into risk: either the importer reports using unfavorable assumptions, faces compliance uncertainty, or builds an internal workaround. None of those outcomes makes a supplier more attractive.
What EU importers will push onto contracts
- data delivery schedules aligned to EU reporting cycles,
- warranties about accuracy of emissions data,
- indemnities if incorrect data causes penalties or higher certificate costs,
- price adjustment clauses tied to CBAM certificate costs or carbon price proxies.
EY’s discussion of the omnibus changes highlights the importance of contract terms and pass-through mechanics. The mechanism of cost transfer is not a footnote; it is the market’s default response.
Case example: the supplier who keeps the customer
The importer’s incentives are obvious. Even before CBAM certificates are surrendered, the importer will gravitate toward the supplier that reduces compliance risk. CBAM becomes a differentiator—quietly, but decisively.
“In CBAM trade, the product is no longer just the product. The product plus verifiable emissions data is the product.”
— — TheMurrow Editorial
Planning for 2026 like an adult: what to do now (and what not to do)
Practical takeaways for U.S. exporters
- Confirm CN codes and coverage: Scope is determined by Annex I classification. Treat classification as a compliance gate, not an administrative afterthought.
- Map your EU customer’s role: Identify whether the buyer is the importer of record or uses an indirect customs representative. That decides who will demand what from you.
- Prepare installation-level emissions data: The Commission has designed CBAM Registry functionality to enable non‑EU operators to share data with declarants. Use it as intended.
- Pre-negotiate “CBAM clauses”: If customers will push cost or liability upstream, negotiate it explicitly—data responsibilities, verification expectations, and who bears financial exposure if default values or conservative assumptions are applied.
- Budget for compliance work in 2026: Even with cash surrender later, the internal costs—systems, measurement, assurance—start now.
What not to do: three common errors
- Do not treat CBAM as a single line item. Compliance and data infrastructure can rival the perceived “tariff” in management time and vendor spend.
- Do not wait for 2027 to build 2026 records. The first surrender covers 2026 imports; the proof must be built from day one.
2026 CBAM readiness (exporter-focused)
- ✓Confirm Annex I CN code coverage for every EU-bound SKU
- ✓Identify the EU importer-of-record and any indirect customs representative
- ✓Stand up installation-level emissions measurement and documentation
- ✓Test data-sharing workflows via the CBAM Registry with EU customers
- ✓Renegotiate supply contracts: data warranties, audit rights, indemnities, pass-through
- ✓Budget internal compliance resources in 2026 (systems, assurance, staff time)
The politics and the pushback: why CBAM will stay controversial
Supporters argue the mechanism is a fairness measure: EU producers pay a carbon price under EU ETS, and imports should face an equivalent constraint to prevent leakage. Critics counter that CBAM exports EU policy outward and risks penalizing producers in countries without equivalent systems—even when those producers are efficient by global standards.
From a business perspective, the controversy matters because it shapes three operational realities:
- Scope changes remain plausible. The policy logic of mirroring carbon costs across supply chains can pull additional downstream goods into view over time, even if firms rely on a narrow “core six sectors” mental model today.
- Documentation expectations will tighten. Whenever a system is contested, enforcement tends to harden to preserve credibility.
- Commercial friction will rise before it stabilizes. The early years of any border regime produce contract renegotiations, re-sourcing threats, and disputes over data quality.
Companies do not need to take a side to take action. They need to recognize that uncertainty is not an excuse for inaction; it is a reason to build flexibility into contracts and reporting systems.
TheMurrow’s bottom line: 2026 is the compliance year, 2027 is the payment year
That structure should focus minds. CBAM is not merely a European accounting exercise. It is a procurement filter, a data requirement, and a negotiation lever that will be felt well beyond EU borders.
The winners will not be the firms that complain loudest about unfairness or complexity. The winners will be the firms that treat emissions data like product quality—measured, documented, auditable—and that rewrite contracts before customers rewrite them.
Frequently Asked Questions
Does CBAM “start” on January 1, 2026?
Yes—the definitive CBAM regime begins on Jan. 1, 2026. The transitional period (Oct. 1, 2023–Dec. 31, 2025) was reporting-only under Implementing Regulation (EU) 2023/1773. From 2026, the system shifts to an authorization and annual declaration framework tied to certificates.
When do companies actually have to buy and surrender CBAM certificates?
Under the 2025 omnibus amendment (Regulation (EU) 2025/2083), the first annual CBAM declaration and certificate surrender covers 2026 imports and is due on 30 September 2027. Multiple sources describe certificates being effectively tied to 2027 purchasing for 2026 embedded emissions.
Who is legally responsible for CBAM—EU importer or U.S. exporter?
Legally, CBAM obligations attach to the EU importer (or an indirect customs representative)—the party making the customs declaration and holding “authorized CBAM declarant” status, per Commission implementing rules. U.S. exporters are not the legal filer under EU CBAM law, but they often provide the emissions data needed to comply.
If EU importers are legally responsible, why should U.S. exporters care?
Because costs and obligations travel through contracts and pricing. EU buyers can demand discounts, add CBAM pass-through clauses, or require verified emissions data as a condition of purchase. The Commission’s CBAM Registry includes functionality for non‑EU operators to upload/share data, signaling that suppliers are part of the practical compliance chain.
Which products are covered by CBAM in Phase Two?
CBAM initially covers cement, iron & steel, aluminium, fertilisers, electricity, and hydrogen. Coverage is determined by CN codes listed in Annex I, not by marketing descriptions. Some metals categories include downstream/processed items, so careful classification is essential.
What should a U.S. exporter do in 2026 if it sells into the EU?
Treat 2026 as the year to build defensible records for later surrender. Confirm whether your goods fall under Annex I CN codes, prepare installation-level emissions data that EU declarants can use, and renegotiate contracts to clarify who bears CBAM-related costs and data liabilities. Waiting until 2027 risks scrambling to reconstruct 2026 information.
