Article 346 TFEU (Essential Security Interests)

Article 346 of the Treaty on the Functioning of the European Union (TFEU) is the primary legal basis on which EU member states exclude particular defence and security contracts from the EU's internal market rules, including public procurement law. It is a narrow derogation, not a general opt-out, and its misuse has been consistently challenged by the European Commission.

What is Article 346 TFEU?

Article 346(1)(b) TFEU states that any EU member state may take the measures it considers necessary for the protection of the essential interests of its security which are connected with the production of or trade in arms, munitions, and war material. Such measures must not adversely affect conditions of competition in the common market regarding products not specifically intended for military purposes.

In procurement terms, Article 346 allows a member state to award a defence or security contract without following the EU procurement directives at all, including without advertising on TED, without running a competitive process, and without applying the procedural safeguards of Directive 2009/81/EC. The Directive itself was partly created to reduce over-reliance on Article 346 by providing a secure, confidentiality-compatible procurement route that member states could use instead of the full exclusion.

The European Court of Justice has interpreted Article 346 strictly. It is an exception that must be applied case by case, with each individual contract assessed on whether disclosure or competitive tendering would genuinely compromise essential security interests. Blanket application of Article 346 to entire sectors or capability areas is not lawful. The Commission periodically monitors member state use of the provision and has opened infringement proceedings against member states that invoke it too broadly.

Where Article 346 is properly invoked, the contract is entirely outside EU law and is governed solely by the national procurement rules of the member state concerned, which may permit government-to-government procurement or direct award to a national champion.

Why it matters for bidders

Article 346 is the mechanism by which a large portion of European defence spending remains inaccessible to cross-border competition. When a member state invokes it, suppliers from other countries have no legal basis under EU law to challenge the award decision. Understanding whether a particular capability area or programme is likely to be Article 346-excluded helps suppliers calibrate their market entry strategy and decide where to invest in relationship-building and national industrial presence.

The European Defence Agency (EDA) publishes data that allows analysis of the proportion of defence contracts advertised competitively versus those awarded under Article 346 or equivalent national exclusions. These statistics indicate the relative openness of different member states' defence markets to European competition.

Example

An Italian aerospace company identifies a Dutch programme to develop a new military satellite communications system. The Dutch Ministry of Defence invokes Article 346, treating the programme as essential to national security interests, and awards the contract directly to a domestic firm without advertising or running a competitive process. The Italian company has no right of challenge under EU procurement law, though it may explore whether the invocation of Article 346 was proportionate through political or diplomatic channels.

Frequently Asked Questions

Can a supplier challenge an Article 346 decision?

A domestic supplier can challenge the decision through national courts if national law provides a basis. Another EU member state can raise the issue with the European Commission, which may investigate whether Article 346 was applied appropriately. However, in practice, Article 346 decisions are very difficult to challenge successfully given the deference courts extend to member states on questions of national security.

Does Article 346 TFEU apply in the UK after Brexit?

No. After the UK's departure from the EU, Article 346 TFEU no longer applies to the UK. However, the UK government retains broad discretion under the Defence and Security Public Contracts Regulations 2011 and under the Procurement Act 2023 to exclude specific contracts from competition on national security grounds, achieving a similar outcome through domestic law.

Is Article 346 the only way to exclude a defence contract from EU procurement rules?

No. There are other grounds, such as contracts awarded under international agreements, contracts covered by specific treaty obligations, and contracts involving classified information where even 2009/81/EC cannot accommodate the security requirements. However, Article 346 is the broadest and most commonly cited exclusion in the defence sector.