CBAM compliance consulting for embedded emissions data that stands up to verification.

What it is

What is CBAM and what is it used for?

The Carbon Border Adjustment Mechanism is European Union law, established by Regulation (EU) 2023/956 of the European Parliament and of the Council of 10 May 2023. The European Commission describes it as the EU's tool to address carbon leakage: producers inside the EU pay for their emissions, so imports of the same goods are made to reflect the carbon embedded in them. It currently covers cement, iron and steel, aluminium, fertilisers, electricity and hydrogen.

In practice CBAM is a data obligation wrapped in a customs obligation. The EU importer declares and surrenders certificates, but the numbers come from furnaces, kilns and electrolysers outside the EU, so an importer is only as compliant as its suppliers' verified data.

Where the law stands. A transitional period ran from October 2023 to December 2025, with quarterly reports and no certificates. The definitive period has applied since 1 January 2026. Regulation (EU) 2025/2083, in force since 20 October 2025, simplified the mechanism, notably with a single mass-based threshold of 50 tonnes of covered goods a year.

Who it is for

Who needs CBAM compliance?

The legal obligations sit with the EU importer, or its indirect customs representative, once imports exceed the threshold. The practical work reaches every plant making covered goods for the EU. Organisations come to Sterling for CBAM from four starting points:

• An EU customer has asked for your installation's emissions data. Its declarant needs actual, verifiable figures for the goods you ship.
• A supply contract or tender now carries emissions clauses. Buyers are writing data delivery, verification and cooperation duties into agreements.
• You import covered goods and need authorised declarant status. Above the threshold, status must be granted by the national competent authority before you import, and it brings an annual declaration of verified emissions.
• A group company imports from a sister plant outside the EU. One side declares and the other holds the data, so the group needs one method, one evidence trail and clear ownership across both.

Requirements

What are the main CBAM requirements?

The regulation and its implementing acts set out obligations for importers, declarants, installation operators and verifiers. The list below is a plain-language map of the main obligation areas under the definitive period, not legal advice; each programme is checked against the official texts, and we work alongside your legal and customs advisers on anything that turns on interpretation.

• Scope of goods: CBAM covers cement, iron and steel, aluminium, fertilisers, electricity and hydrogen imported into the EU.
• The 50-tonne threshold: importers whose covered iron and steel, aluminium, fertiliser and cement goods do not exceed 50 tonnes a year in total are exempt; electricity and hydrogen fall outside that exemption.
• Authorised CBAM declarant status: importers above the threshold, or their indirect customs representatives, apply before importing to the national competent authority where they are established.
• Embedded emissions: declarations rest on actual emissions calculated with the Commission's methods and verified, or on default values published by the Commission.
• Verification: declared embedded emissions are verified by a verifier accredited by an EU national accreditation body, which gives reasonable assurance and issues a verification report.
• Annual CBAM declaration: submitted in the CBAM Registry by 30 September for the preceding year, first in 2027 for 2026 imports.
• CBAM certificates: sold on a common central platform from 1 February 2027, held at quarterly intervals and surrendered each year against the declared emissions.
• Carbon price paid abroad: a deduction may be claimed where a carbon price was paid in the country of production and the declarant can prove it.
• The CBAM Registry: the shared system used by declarants, non-EU installation operators, verifiers and national competent authorities.

Compliance process

How do you become CBAM compliant?

No certificate of compliance exists for CBAM. Compliance is shown each year through authorisation, verified data, an accurate declaration and certificates surrendered; Sterling builds the data and processes behind them.

1. 01
   Establish your position under CBAM.Identify the covered goods, annual volumes against the threshold, the installations that make them and who acts as importer, declarant or supplier.
2. 02
   Gap analysis: compare your data with what the rules require.Review monitoring, meters, production records and supplier inputs against the Commission's calculation methods, then agree actions, owners and dates.
3. 03
   Build the emissions data chain.Set installation boundaries, document the methodology, assign data owners, collect supplier information and calculate embedded emissions per good.
4. 04
   Review internally, then support the verification.An internal review tests the calculation and evidence first; the accredited verifier then reviews documents, visits the site and issues its report.
5. 05
   Declare, surrender and repeat every year.The declarant files through the CBAM Registry and surrenders certificates; the data chain keeps running for the next reporting year.

Check the route before you sign. Confirm that the verifier is accredited for CBAM by an EU national accreditation body, and that your importer holds authorised declarant status with its national competent authority. Sterling is neither a verifier nor a declarant, and a provider offering to prepare and verify the same data is offering a conflict of interest. The compliance buyer's checklist

Cost

How much does CBAM compliance cost?

The consulting side of CBAM is priced on the work, not on the regulation. A single plant with one product needs far less than a group with several production routes. Certificate costs are a matter between the declarant and the authorities.

Timeline

How long does CBAM compliance take?

The first year takes longest; later years reuse the methods and data. For a single installation with reasonable records, a verification-ready data chain typically takes three to six months, but the calendar is set by the annual declaration date and by when your EU customer needs figures.

Share the date your customer or declarant needs verified data at the outset, and we will tell you plainly what is achievable by then.

Your engagement

What your CBAM engagement includes

Every engagement runs on Sterling OS™. You choose the support level: Design™, where we guide and your team does the work, or Drive™, where we manage the programme and do the heavy lifting with you. After the first verified year, Sustain™ keeps the annual cycle running, and Automate™ is Effivity, where the data lives. Sterling does not verify emissions, act as declarant or customs representative, or give legal advice.

• Position review and gap analysis

  Goods, installations, roles and data gaps, with owners and dates agreed before work starts.

• Methodology and data chain

  Boundaries, monitoring, calculations and supplier data requests, written for your plants.

• Effivity ISO & GRC software

  Your emissions records and evidence in Effivity, included with the engagement at no additional cost.

• Training for everyone

  Internal auditor training for your review team, as applicable to your standard, and preferential Sterling Academy access, including complimentary awareness training for your people as part of the engagement.

• Internal review

  The calculation and evidence tested against the rules, with findings closed before verification.

• Verification and declarant support

  Preparation for the verifier's visit and a clean data package for your declarant.

Verification remains with the accredited verifier, and declarations with the authorised CBAM declarant.

Often combined with

Standards organisations pair with CBAM

• AA1000AA1000 implementation and requirements: apply the AccountAbility Principles and SES, then prepare for AA1000AS v3 assurance by a licensed provider.
• AEOAuthorised Economic Operator (AEO) readiness: what customs examines, who can apply and how Sterling prepares your controls and evidence for the customs visit.
• B Corp CertificationB Corp certification made clear: the new B Lab Standards, Foundation Requirements, seven Impact Topics, the audit route and how Sterling prepares you.
• BRCGS Storage and Distribution · Agents and BrokersBRCGS Storage and Distribution certification and Agents and Brokers: Issue 4 and Issue 3 requirements, scopes, audits and cost factors, with Sterling's support.
• C-TPATC-TPAT requirements and validation readiness for US importers and overseas suppliers: the Minimum Security Criteria, CBP's process and how Sterling helps.
• CDPCDP disclosure consulting: a complete, evidenced response on climate, forests and water, prepared with your team.