The CBAM Registry opens for verifier registration on 1 September 2026 under Regulation (EU) 2025/2083. Each accredited verifier then applies through the competent authority within two months of its accreditation, and not before 1 September 2026. The Commission then lists the verifier on its website.
The question turns on one opening date and one deadline per verifier. Regulation (EU) 2025/2083 provides for verifier registration in the CBAM Registry from 1 September 2026. Each accredited verifier then requests registration through the competent authority of the Member State where its accreditation body sits, within two months of receiving accreditation. The European Commission is explicit that CBAM verifiers “have the obligation of registering in the CBAM registry.”
The steps in order
| Step | Timing | Basis |
|---|---|---|
| National Accreditation Body accredits the verifier | first grants expected around September 2026 | Delegated Regulation (EU) 2025/2551 (conditions); EC verification guidance (timing) |
| Registry opens for verifier registration | 1 September 2026 | Regulation (EU) 2025/2083 |
| Verifier applies for registry access via the competent authority | within two months of accreditation, not before 1 September 2026 | Regulation (EU) 2023/956, Article 10a(1) |
| Commission lists the verifier on its Taxation and Customs website | after registration | EC verification guidance |
Why registration waits for accreditation
Accreditation comes first. Delegated Regulation (EU) 2025/2551 sets the conditions a verifier must meet and applies from 1 January 2026, but that date is only the legal basis: National Accreditation Bodies became ready progressively, and by 10 July 2026, 11 of the 24 bodies that agreed to provide CBAM accreditation were accepting applications. The Commission expects the first CBAM verifiers to receive accreditation around September 2026, so the first registry applications follow from then. No accredited verifier list had been published as of 20 July 2026; the Commission will publish it on its Taxation and Customs site, and that published list becomes the working reference for declarants seeking a verifier.
GreenSutra advises importers as a CBAM consultant on exposure assessment, embedded-emissions calculation and certificate cost planning; verification itself always belongs to an independent accredited verifier. CBAM advisory covers declarant status and the annual declaration those verified figures feed. The CBAM guide sets out the full compliance calendar around these dates.
Sources: Regulation (EU) 2025/2083 · Delegated Regulation (EU) 2025/2551 · European Commission CBAM
Related: CBAM Monitoring Plan in 2026: Template and What It Must Contain.