Customs Transit: Everything You Need to Know About T1, T2 and TIR Regimes to Secure Your Flows

Every day, thousands of goods cross European borders without customs duties being immediately required. This mechanism is customs transit — a suspensive regime that allows goods to be transported from point A to point B while deferring payment of duties and taxes until the final destination. Three regimes govern these operations: T1, T2 and the TIR carnet. Choosing the wrong regime means exposing yourself to customs holds, reassessments or financial penalties.

What is Customs Transit?

Customs transit is a special customs regime governed by the Union Customs Code (UCC) that authorises the circulation of goods between two customs offices without immediately paying customs duties or import VAT. The fiscal obligations are suspended for the entire duration of transport, becoming payable only on arrival at destination. The transit rests on three pillars: a customs declaration filed at the office of departure, a financial guarantee covering potentially owed duties and taxes, and computerised monitoring via the DELTA T system connected to the European NCTS network.

How Does the T1 Regime (External Transit) Work?

T1, or external transit, applies to goods that do not have Union goods status — specifically goods imported from third countries (China, USA, India, etc.) that have not yet been cleared or subjected to customs duties in a Member State. T1 allows them to be transported across the EU customs territory from a departure customs office to a destination office without paying duties at each border crossing.

T1 involves a central actor: the principal obligor. This is the natural or legal person who signs the transit declaration and assumes responsibility for presenting the goods intact, within the prescribed deadlines, at the destination office. If goods are not presented, they become liable for the customs debt. T1 validity is generally set at a maximum of 10 days.

What is the T2 Regime (Internal Transit) Used For?

T2, or internal transit, concerns the opposite situation: goods already have Union goods status (produced in the EU or already cleared and placed on free circulation), but must temporarily cross a territory outside the EU customs territory before returning to the EU.

The most common example is transport between France and Italy via Switzerland. Without T2, the French goods would lose their Union status upon entering Switzerland and would need to be cleared again on entry into Italy. T2 protects their customs status throughout the journey, avoiding double clearance and the associated duties.

This regime relies on the Common Transit Convention, extending EU transit procedures to certain third countries: Switzerland, Norway, Iceland, Liechtenstein, Turkey, North Macedonia, Serbia and the United Kingdom. Two variants: T2L serves as proof of Union status after maritime transport with a non-EU port call; T2F applies to goods to or from special fiscal territories (French DOM, Canary Islands, Åland Islands).

The TIR Carnet: International Road Transport

The TIR (Transports Internationaux Routiers) regime is distinguished by its geographic scope: 78 contracting parties, from Europe to Central Asia, North Africa and the Middle East. Its principle: a single document, the TIR carnet, serves as both a transit declaration and financial guarantee for the entire journey, regardless of the number of borders crossed. The guarantee is capped at €100,000 per carnet and is provided by the national guarantor associations (AFTRI in France).

TIR is particularly relevant for road flows to countries not covered by the Common Transit Convention, such as Ukraine, Georgia, Azerbaijan, or certain Balkan countries outside the EU.

Which Transit Regime to Choose for Your Flows?

If your goods have not yet been cleared and are circulating within the EU or Common Transit Convention countries, T1 is required. If your goods have Union status but must cross a covered third country, use T2. If your flow involves countries outside this perimeter — Central Asia, Middle East, Balkans outside the EU — the TIR carnet is the most appropriate. On certain routes, combining a T1 for the intra-European portion and a TIR carnet for the extra-European portion is possible.

Transit Discharge

Discharge is the final step confirming goods have arrived at the destination office intact and on time. While the transit is not discharged, the principal obligor remains responsible for potentially owed duties and taxes. The DELTA T system, connected to the European NCTS network, manages discharge electronically.

If transit is not discharged within the prescribed deadlines, the customs debt becomes immediately payable. Administrative fines range from €300 to €3,000. In the most serious cases (smuggling, document falsification), criminal sanctions can reach 3 years' imprisonment.

Guarantees and Obligations of the Principal Obligor

Every transit operation requires a financial guarantee covering duties and taxes in case of non-discharge. Three forms are provided by the UCC: the global guarantee covers all of a company's transit operations over a given period; the individual guarantee covers a single operation; under certain reliability conditions (AEO status notably), a guarantee waiver or reduction can be granted.

The principal obligor must also present goods under seals at the destination office within the prescribed deadline, respect any mandatory route, and report any incident (accident, transhipment, broken seal) to the nearest customs office. Mastering these obligations is part of a broader customs compliance approach.

Frequently Asked Questions about Customs Transit

What is the difference between T1 and T2 in customs?

T1 applies to non-Union goods (not cleared) circulating on EU territory, while T2 concerns Union goods (on free circulation) that must cross a third country before returning to the EU. T1 suspends duties payable; T2 protects the customs status of the goods.

Can you combine a T1 and a TIR carnet?

Yes. On certain routes, it is possible to use a T1 for the intra-European portion of transport and a TIR carnet for the extra-European portion. The two regimes are not mutually exclusive but cover different geographic perimeters.

Who can be the principal obligor of a transit?

Any natural or legal person established in the European Union can be principal obligor, provided they are able to present goods at the destination office and provide the required guarantee. In practice, this role is often assumed by a customs agent or registered customs representative (RDE).

What happens if the transit is not discharged?

The principal obligor becomes liable for all duties and taxes normally payable, plus late interest. Administrative fines range from €300 to €3,000. In the most serious cases, criminal penalties can reach 3 years' imprisonment.

How much does a transit guarantee cost?

Cost depends on the type of guarantee and volume of operations. For a global guarantee, the surety is generally set as a percentage of potential duties. For TIR, the guarantee is capped at €100,000 per carnet. Bank fees for arranging the surety vary by institution.