What is a T1 transit document? A complete explanation

A T1 is an electronic customs document with which non-Union goods (goods on which import duties and VAT have not yet been paid) are transported through the EU customs territory without those levies becoming directly due. The document is created and tracked in NCTS (New Computerised Transit System) and must be discharged within a fixed period — maximum 8 days for air and sea transport, 5 days for road transport — at the destination office. Without T1, you would have to pay the import duties already at the first point of entry, even if that’s not the final destination.

What exactly is a T1?

The T1 document is the modern digital successor to the old paper transit document. The legal basis lies in the Union Customs Code (UCC, Regulation (EU) 952/2013) and the associated implementing regulations. T1 falls under the external Union transit procedure and is intended for goods not yet brought into free circulation in the EU.

It’s important to distinguish T1 from T2:

• T1: Non-Union goods (from a third country) transported through the EU under suspension of duties and levies.
• T2: Union goods transported across the territory of a third country (for example Switzerland or Norway), but must retain their status as Union goods.

In the Netherlands, Dutch Customs is the supervising authority. The system that manages all declarations is NCTS, which has been migrated across Europe to NCTS Phase 5 since the end of 2023, with stricter data requirements and better integration with other customs systems such as AGS (export/import) and ICS2.

A T1 is not a transport document and does not replace a waybill (CMR, AWB, Bill of Lading). It is solely a customs procedure created alongside the transport document.

When do you need a T1?

In practice a T1 comes into play as soon as goods enter the EU customs territory but are not immediately imported. Typical scenarios:

• Air and sea freight arriving at Schiphol or Rotterdam and continuing to another EU country or to a customs warehouse.
• Goods under a suspensive procedure that need to be physically moved, such as from a warehouse to a fiscal representative.
• Road transport from a non-EU country (e.g. United Kingdom after Brexit, Switzerland, Turkey) toward the Netherlands or further into the EU.
• Pre-clearance where you want to handle the import formalities at the final destination instead of at the first point of entry.

A concrete example: a shipment of flower-related equipment from Kenya lands at Schiphol and needs to continue to a customer in Poland. Without T1 you would have to pay Dutch import levies, while import only makes logical sense in Poland. With a T1, the shipment travels under suspension to the destination office in Poland, where the final import declaration is made.

How does it work in practice?

A T1 goes through roughly five phases, all digitally via NCTS:

1. Declaration at the office of departure

The declarant (often a customs broker or forwarder with NCTS access) electronically files a T1 declaration at the office of departure. Required data: HS codes, goods description, weights, number of packages, value, carrier, destination, route, and the transport reference (e.g. AWB or B/L number).

2. Guarantee provision

For every T1, a guarantee must be available covering the potential import duties and VAT. This can be via continuous security (bank guarantee or surety) or an individual guarantee per shipment. Holders of an AEO license can often receive a reduced or even zero guarantee for part of the debt.

3. MRN and TAD

After acceptance, NCTS issues an MRN (Movement Reference Number) and the TAD (Transit Accompanying Document) with barcode is created. This document must travel physically or digitally with the shipment during transport.

4. In transit and border crossings

At every border crossing and transit office, the MRN can be scanned. The system tracks where the shipment is and whether the latest date of presentation is met. The legal maxima:

• Road transport: 5 days
• Air and sea transport: 8 days
• Rail transport: 7 days

Exceeding leads to investigation and possibly recovery of duties and levies.

5. Discharge at the destination office

The shipment is presented at the destination office (often in a customs warehouse or at the final consignee). After inspection, the destination office confirms arrival in NCTS. The declarant receives the Proof of Termination — only at that moment is the T1 discharged and the guarantee available again for new shipments.

Common mistakes and pitfalls

In ten years of customs practice, we see the same problems recurring. The five biggest:

1. Not discharging in time

The biggest culprit. The shipment arrives at the consignee, but the arrival notification is omitted. Result: Customs starts an investigation procedure and can after some time recover import duties and VAT as if the goods had never been presented. Set up a fixed internal control where all open T1s are checked weekly.

2. Wrong HS code in the declaration

An incorrect 8-digit goods code seems harmless, but can lead to rejection of the declaration or, worse, a recovery afterwards due to incorrect tariff calculation. Always use the current TARIC database of the EU Commission and consult a Binding Tariff Information (BTI) if in doubt.

3. Insufficient guarantee

For large or high-value shipments (think electronics, perfumes, alcohol) the continuous guarantee is sometimes insufficient. NCTS then refuses the declaration or asks for a top-up. Monitor the guarantee balance in real time and make arrangements with your bank for flexible expansions.

4. Wrong route or carrier

A T1 states the planned route and the license plate/flight number. If the actual route deviates without notification, the shipment is formally “removed from customs supervision” — a serious offence. Work with in-transit notifications if the route changes.

5. Using T1 where T2 or EU transit suffices

For Union goods transported through Switzerland or Norway, a T2 belongs (or in some cases a T2L), not a T1. Confusion leads to double levies or status loss. Always check the goods status first before opening a transit document.

T1 versus other customs procedures

To prevent misunderstandings — a T1 is not the same as:

For excise goods (alcohol, tobacco, mineral oils) you use EMCS instead of T1, even though they’re non-Union goods. If in doubt: get advice from a customs broker.

Costs and lead time

A T1 itself costs no levies, but there are three cost items:

• Declaration by customs broker: rate on request, depending on complexity and volume.
• Guarantee costs: a bank guarantee typically costs 0.5% to 1.5% per year on the guaranteed amount.
• Possible storage costs if the shipment remains pending discharge.

The lead time for opening a T1 is usually 15 to 30 minutes provided all data is complete. The discharge notification you usually receive within 24 hours after presentation at the destination.

Get started

A T1 is a routine document for those who work with it daily — but one error quickly costs you thousands of euros in recovery. Therefore work with fixed procedures, monitor your open declarations and ensure your guarantee has sufficient capacity.

Have doubts about a specific shipment or want to outsource your T1 process? Our customs brokers in Aalsmeer handle T1s for air, sea and road freight daily. See our T1 Transit service or request a quote directly. For general basic knowledge, our article on applying for an EORI number is also a logical next step, because without EORI you cannot open a T1.

Feel free to call us on 088 088 2407 or email sales@aircargo.nl for direct advice.