Key takeaway
What This Development Means
The corrected EU CBAM default values entered into force on 3 August 2026 and apply retrospectively from 1 January. Importers should identify calculations using the replaced annexes, verify product and production-route mapping, update systems and broker instructions, and preserve supplier evidence supporting revised embedded-emissions totals and promptly addressing certificate exposure.
What Should Importers Do About The Corrected CBAM Default Values?
The correction matters when a declarant used CBAM default values for covered imports during 2026. Teams should compare earlier calculations with the replacement annexes, focusing on country, CN or TARIC code, production route, unit and product description. Actual-emissions cases still require evidence, but may not need the same recalculation exercise.
Who Needs To Act On The CBAM Default Values Correction?
Authorised CBAM declarants should coordinate customs, sustainability, procurement, finance and legal teams. Overseas suppliers should verify product classifications, production routes and emissions information provided to EU customers. Software providers and customs brokers should update reference tables promptly, while contracts should be checked for responsibility for altered certificate costs and corrections.
Source basis: European Commission, Implementing Regulation (EU) 2026/1740 correcting CBAM default values (31 July 2026)
EU importers and overseas suppliers must review CBAM calculations after the European Commission published corrected default-value tables on 31 July 2026. Commission Implementing Regulation (EU) 2026/1740 entered into force on 3 August and applies from 1 January 2026, so businesses may need to revisit calculations already made this year.
The binding regulation replaces Annexes I and IV of Implementing Regulation (EU) 2025/2621. It corrects missing or erroneous CBAM default values, production routes, units, country entries and customs distinctions. The changes affect covered cement, iron and steel, aluminium, fertilisers and hydrogen imports when declarants use default rather than verified actual emissions.
Corrected CBAM Default Values Apply Retrospectively
Because the new CBAM default values apply from 1 January, authorised CBAM declarants should not treat 3 August as a purely forward-looking system update. Teams should identify entries calculated with the replaced annexes, compare the relevant country, product code and production route, and document any correction.
Overseas manufacturers should also check the emissions information supplied to EU customers. Incorrect product classification or route mapping can change embedded-emissions totals, certificate exposure and landed-cost assumptions. Procurement, customs, sustainability and finance teams therefore need a shared reconciliation process.
Importers Should Update Controls And Supplier Evidence
Businesses should confirm when default values were used, whether actual emissions evidence remains valid and which contracts allocate the cost of revised CBAM calculations. Importers should preserve the version of each source table used, the correction applied and supporting supplier records.
The regulation is already adopted and binding, not a consultation. It supersedes the original Annexes I and IV of Regulation 2025/2621; no later corrigendum or postponement was identified by 3 August 2026. Companies relying on software or customs brokers should confirm that reference data is updated now that the regulation has taken effect. This is a practical data-governance deadline with cross-border cost consequences.
Summary
The corrected EU CBAM default values entered into force on 3 August 2026 and apply retrospectively from 1 January. Importers should identify calculations using the replaced annexes, verify product and production-route mapping, update systems and broker instructions, and preserve supplier evidence supporting revised embedded-emissions totals and promptly addressing certificate exposure.
Related Articles
European Commission Publishes CBAM Verifier Guidance Before Registry Access Opens
Accredited CBAM verifiers can seek registry access from 1 September, with verification reports due to begin in January 2027.
European Commission Publishes Ten CBAM Guides For Definitive-Period Emissions Data
Ten new Commission guides explain CBAM monitoring, calculations and sector methods for non-EU installation operators during the definitive period.
European Parliament Backs CBAM Downstream Goods Expansion
Parliament backs a wider CBAM downstream goods scope, but negotiations must finish before new product obligations become law.
