Poland delays NCTS Phase 6 transit go-live to 15 June 2026

Poland has rescheduled its NCTS Phase 6 go-live to 15 June 2026, after the original 1 June 2026 migration attempt caused rejected transit declarations at Polish customs. During the unstable switchover, the IRU's TIR-EPD platform reverted all deployed changes tied to the transition, and some carriers reported rejected declarations at Polish customs. The delay matters because Poland sits on one of Europe's busiest transit corridors, and even a short interruption to the system that controls common and Union transit movements can stall trucks at the border.

What NCTS Phase 6 changes for hauliers

NCTS is the IT backbone that manages transit declarations across the EU and common-transit countries, allowing goods to move under customs control without paying duties at each internal crossing. NCTS currently connects 37 countries across the EU and the common-transit area, including Switzerland, Norway, the United Kingdom and Turkey. Phase 6 is a structural upgrade that embeds safety-and-security data directly into transit declarations and aligns the system with the wider customs modernisation programme described by the European Commission . The EU-wide deployment window ran from March to September 2025, but several member states, including Poland, secured extensions that pushed their go-live into the first half of 2026.

For carriers, the practical effect is that declaration data sets, message formats and the connections between systems all changed at once. Phase 6 also connects to neighbouring platforms: the Automated Export System was linked to NCTS from 16 May 2026, so export and transit processes now exchange data automatically, as SGS e-Customs has documented. When one national system in that chain is unstable, declarations can be rejected even though the underlying paperwork is correct.

Why Poland's switchover stalled

According to an IRU TIR-EPD alert , Poland's Phase 6 migration was moved to 15 June 2026 and the TIR-EPD platform reverted all changes that had been deployed for the transition. A separate IRU notice confirmed that, because of the 1 June migration attempt, some users experienced EPD rejections and that IRU was working with the Polish customs authorities to resolve the issues.

The timing is significant. Poland is the eastern gateway for road freight moving between the EU and Ukraine, the Baltics and beyond, and it processes a very high volume of TIR and common-transit movements. A rejected transit declaration does not just delay one load; it can hold a vehicle at the office of departure until the message is accepted, which ripples through driver hours, slot bookings and onward deliveries. The Phase 6 rollout also overlaps with the Import Control System 2 (ICS2) safety-and-security programme, whose convergence with transit is explained by Customs-Declarations.UK , adding further moving parts for operators to track.

What carriers should do now

Operators running transit through Poland should confirm that their customs software provider has tested against the 15 June 2026 Phase 6 environment, and should keep a fallback declaration route ready in case of further rejections in the first days after go-live. Building extra buffer into eastern-corridor schedules is sensible while the system stabilises, and dispatchers should brief drivers that border dwell times may be longer than usual. Pairing customs readiness with live route and rest-stop visibility helps absorb the disruption: Logifie's GPS tracking keeps dispatchers informed when a vehicle is held at the office of departure, and the public holiday calendar flags loading and driving restrictions that can compound a customs delay.

If your fleet relies on the eastern corridor and you want a single view of transit timing, tolls and rest-area capacity across the route, the Logifie TMS platform brings those operational signals together so you can plan around customs disruption rather than react to it. Speak to our team through the contact page to see how it fits your transit lanes.