Customs Regulations22 April 2026

NCTS Phase 5 Explained: What Changed and Why It Matters

What Is NCTS Phase 5?

The New Computerised Transit System (NCTS) Phase 5 is the latest major upgrade to the EU-wide platform used for filing transit declarations under the Common Transit Convention. The rollout was completed across all CTC contracting parties between 2023 and 2025, replacing the long-standing Phase 4 specification.

Phase 5 is not just a new version number — it is a fundamental rewrite of the message set, data model and security architecture. Every transit declaration now has to carry more information, in a more structured way, than under Phase 4.

Key Changes Under Phase 5

1. Expanded Message Set

Phase 5 introduces over 60 new message types covering every stage of the transit lifecycle. Some of the most important:

  • IE015 — Declaration data (replaces the old IE015 with new fields)
  • IE013 — Amendment of declaration data
  • IE029 — Release for transit
  • IE060 — Control decision notification
  • IE043 — Unloading permission
  • IE045 — Write-off / discharge
  • IE142 — Enquiry request to declarant

2. New Mandatory Data Elements

Phase 5 declarations require additional fields that were optional or absent in Phase 4:

  • Seal information — Number and type of seals affixed to the means of transport
  • Authorisation references — Where the declarant uses simplifications
  • House consignment data — For master/house transit relationships
  • Country of routing — Full itinerary, not just borders
  • Active means of transport at the border — For cross-border movements

3. Security and Safety Integration

Phase 5 integrates safety and security (entry/exit summary) data directly into the transit declaration where applicable, eliminating duplicate filings under ICS2/ECS.

4. New XML Schema

The underlying XML schema has been rewritten and is incompatible with Phase 4 software. Brokers had to upgrade or replace their NCTS software to remain compliant.

What Does This Mean for Hauliers and Traders?

  • More accurate paperwork is required before a declaration can be filed. Missing or incorrect data is now rejected at the IE015 stage rather than later in the process.
  • Itinerary planning matters more. With country-of-routing data required, plans cannot easily change mid-movement without amendments.
  • Authorised consignor/consignee status is more valuable than ever because it reduces the documentary burden at offices of destination.

How We Handle Phase 5

At T1 Transit, our NCTS software is fully Phase 5 compliant and we monitor every declaration we file for the full set of response messages. We catch IE060 controls early, push for prompt discharge (IE045), and intervene on enquiry messages (IE142) before they become guarantee claims.

If your current declarant is struggling with Phase 5 rejections or delayed discharges, get in touch — we can take over your transit filing today.