T1 Customs Transit from the UK — What It Is and When You Need It

T1 Customs Transit from the UK — What It Is and When You Need It

The T1 document is one of the parts of import planning from the UK that gets overlooked most often. Yet without it, goods can get stuck at a port or end up facing unexpected costs. We explain when a T1 is required and how the whole thing works in practice.

Questions and answers — T1 transit

What is a T1?

A T1 is the European Union's external transit document. It allows goods from outside the EU to move through the territory of member states without customs duty and VAT having to be paid immediately in every country they pass through. The goods stay "under customs control" in the NCTS (New Computerised Transit System) and remain under supervision until they reach the place of import clearance.

When is a T1 needed when importing from the UK?

A T1 is required when:

• goods from the UK arrive by sea at a port in Germany, the Netherlands or Belgium, and clearance takes place in Poland
• the road transport route passes through several EU countries before reaching the place of clearance
• the goods are heading to a customs warehouse in another EU country

A T1 is NOT needed when goods enter via Dover/Folkestone to Calais and travel directly to the Polish–Ukrainian border (with clearance on entry), or when import clearance takes place at the point of entry into the EU.

What does the T1 procedure look like in practice?

Step by step:

1. The goods arrive at a port (e.g. Hamburg) — a customs agency in Hamburg opens the T1 in NCTS
2. The haulier receives the transit MRN and a seal number
3. The truck travels from Hamburg to Poland under NCTS supervision
4. In Poland, a customs agency carries out the import clearance and closes the T1
5. The customs office in Hamburg receives confirmation of closure — the goods are "released"

How much does a T1 cost?

We work out the cost of handling a T1 document on a case-by-case basis — ask for a quote. The customs guarantee also matters here — agencies holding a comprehensive guarantee don't charge the client separately for the security. When choosing an agency, make sure it handles NCTS transit on both sides.

What happens if a T1 isn't closed?

After the deadline passes, the customs office in the country of departure (e.g. Hamburg) sends an "enquiry" about the goods. If closure isn't confirmed, the office can demand payment of the secured customs duties and taxes from the agency that opened the T1. That's why agencies keep a close eye on transit closure deadlines and respond to alerts from the NCTS system.

Have goods that need a T1 transit? Easyclearance.pl handles the full NCTS transit — from opening the T1 at the point of entry to closing it in Poland.