On May 19, 2026, the European Commission officially released the final version of the CBAM carbon price offset implementation rules, clarifying that the formal carbon price deduction mechanism will be fully implemented on January 1, 2026. This marks the completion of the core framework of the CBAM formal phase, and enterprises exporting to the EU will face more standardized and strict carbon cost management requirements.

This rule update is the most important adjustment since the launch of the CBAM formal phase. It clearly defines the calculation standards, application procedures and verification requirements for carbon price offsets, and unifies the implementation calibers of EU member states.

The European Commission first released the draft of the carbon price offset rules on May 13, 2026, and after collecting feedback from global enterprises and member states, it made three key adjustments in the final version released six days later.

First, the final version completely deleted the provision allowing the use of Paris Agreement Article 6 carbon credits for offset. The draft had proposed a 10% cap on Article 6 credit usage, but the final version clarified that only emission reduction certificates issued by officially recognized carbon trading systems and carbon tax payment vouchers are eligible for offset, and voluntary carbon market certificates are temporarily not accepted.

Second, the final version clarified the phased offset ratio and certificate validity period. The draft only mentioned the phased implementation principle, while the final version clearly stipulated the offset ratio as 50% in 2026, 75% in 2027, and 100% from 2028 onwards, and limited the validity period of certificates to 12 months from the date of issuance.

Third, the final version significantly strengthened data verification requirements. The draft had proposed a 10% random spot check ratio, which was increased to 15% in the final version, and the penalty for failed verification was raised from 2 times to 3 times the payable carbon tariff.

The new rules clarify that enterprises can offset the CBAM carbon tariff payable by submitting valid carbon emission reduction certificates obtained in their home countries. The offset ratio will be implemented in stages: 50% in 2026, 75% in 2027, and 100% from 2028 onwards. Only emission reduction certificates issued by officially recognized carbon trading systems are eligible for offset, and certificates from voluntary carbon markets are temporarily not accepted.

The offset calculation will be based on the weekly average price of the EU ETS. If the carbon price in the enterprise's home country is lower than the EU ETS price, the enterprise needs to make up the difference; if it is higher, the excess part will not be refunded. All offset applications must be submitted together with the quarterly CBAM declaration, and the validity period of the certificates is limited to 12 months from the date of issuance.

The formal phase has significantly strengthened the data verification requirements for carbon price offsets. Enterprises need to provide complete evidence chains to prove the authenticity and ownership of emission reduction certificates, including transaction records, transfer certificates and enterprise carbon account information. The EU will conduct random spot checks on 15% of offset applications every quarter, and enterprises that fail the verification will face a fine of 3 times the carbon tariff payable.

In addition, enterprises need to establish a special carbon asset management system to track the acquisition, use and transfer of emission reduction certificates. The system must be able to generate real-time reports and retain all relevant data for at least 5 years for EU regulatory authorities to check at any time.

Enterprises should sort out their existing carbon asset reserves as soon as possible, evaluate the available offset quota, and formulate a reasonable carbon asset allocation plan according to the phased offset ratio. It is recommended that enterprises prioritize purchasing emission reduction certificates from officially recognized carbon trading systems to ensure their eligibility for offset.

At the same time, enterprises need to improve their internal carbon data management systems, standardize the collection and recording of emission data, and prepare for the strict verification of the EU. For enterprises with large export volumes to the EU, it is recommended to establish a dedicated CBAM compliance team to be responsible for daily declaration and carbon asset management.

As a professional digital carbon management service provider, SKYCO2 has launched a targeted CBAM carbon price offset compliance service to help enterprises accurately grasp the new rules. We provide one-stop services including carbon asset assessment, offset application assistance and carbon data management system construction, helping enterprises efficiently complete the offset process and maximize the reduction of carbon tariff costs.

Relying on the self-developed carbon asset management platform and senior compliance expert team, SKYCO2 has rich experience in serving global export enterprises. Our services fully comply with EU official standards, ensuring that enterprises' offset applications pass the verification smoothly and escort enterprises' stable development in the EU market.