As of 16 May 2026, Phase 6 of the New Computerised Transit System (NCTS) has come into effect. This is the European digital system that processes all transit declarations, including the T1 and T2 documents that we handle daily for you. A limited but important upgrade, with a number of changes that you as a shipper or logistics service provider should be aware of.

What has changed?

The biggest innovation in Phase 6 is the link between the Automated Export System (AES) and NCTS. This means your export declaration now connects directly to customs transit. Data is automatically forwarded, you receive confirmation of departure faster, and you need to do less manual data entry.

Specifically, the following changes:

Have you submitted an export declaration in AES followed by a transit declaration in NCTS? You will now automatically receive confirmation of departure via AES. Additionally, the system now automatically checks whether the export MRN you enter in the transit declaration matches what is in AES. If it does not match, the declaration will be rejected. Furthermore, one export MRN can only be used in one transit declaration.

The Netherlands opts out

NCTS Phase 6 also adds the possibility of submitting a combined security and transport declaration. However, the Netherlands has chosen not to participate in this. This means that for incoming goods, two separate declarations are still required: an Entry Summary Declaration (ENS) for security data, and a separate transit declaration. For most companies, this opt-out means little changes to daily operations.

What about A1 Customs?

Our systems are fully connected to the renewed NCTS environment and the new DMS link. You don't need to make any adjustments yourself. We process your T1 and T2 documents, even after 16 May, quickly and correctly, as you are accustomed to from us.

Do you have any questions about what NCTS Phase 6 means for your specific situation? Feel free to call us on +31 (0)541 552 080 or send an email to info@a1customs.nl.