CBAM verification: book the verifier before the 2026 data closes

For a Brazilian steel mill, aluminium producer or fertiliser plant, CBAM verification should begin before the 2026 production data is closed. The European Commission's guidance of 24 August recommends that operators contract an accredited verifier early in the reporting year and start verification while the year is still running. The reason is practical: gaps in the monitoring plan, precursor data or metering are easier to correct before the annual emissions report is final. Waiting until the EU buyer is assembling its declaration turns a data problem into a capacity and timing problem.

The verifier cannot be chosen on reputation alone. CBAM accreditation comes from an EU national accreditation body and has a defined sector scope, so the producer needs to confirm that the firm is accredited for the goods and processes at the relevant installation. Before accepting the work, the verifier assesses its independence, competence, staffing, time and ability to operate in the installation's country. A generic carbon consultant may help prepare the data, but only a duly accredited and Registry-registered CBAM verifier can generate the formal report.

This is an installation audit, not a desk-top sign-off. The verifier assesses the monitoring plan, tests data flows, controls, measurements and embedded-emissions calculations, and must reach a reasonable level of assurance. A physical site visit is the normal route because the verifier needs to check installation boundaries, production processes, meters and source streams. Virtual visits or waivers exist only under defined conditions; a producer entering its first CBAM verification cycle should plan for on-site access, staff interviews and an evidence trail rather than assume the exercise can be completed remotely.

The Registry now gives the process a fixed sequence. Accredited verifiers can seek access from 1 September 2026 and must apply for registration within two months of receiving accreditation. They cannot generate a valid verification report without Registry access. From January 2027, reports will be issued in the Registry, where authorised EU declarants can retrieve the verified actual-emissions information for their annual declarations. The legal filing remains the importer's job, but the factory controls whether the underlying evidence is usable.

The useful next step is a short readiness file for each installation: the applicable CBAM goods and production processes, the current monitoring plan, source and precursor data, meter records, responsible staff, candidate verifiers with the right accreditation scope, and a window for the site visit. That is enough to expose whether verification is a schedulable workstream or whether default values are still the realistic basis for the buyer's declaration. An Opportunity Scan can place that decision alongside the carbon cost and the wider Brazil-to-EU route before the reporting calendar becomes the constraint.