National security exception (NSE)

The national security exception (NSE) is a provision found in Canada's domestic and international trade agreements — Canadian Free Trade Agreement article 801 (National Security), the WTO Revised Agreement on Government Procurement article III(1), and CETA article 19.3(1) — that allows Canada to exclude a procurement from some or all of the obligations of those agreements where it considers it necessary to protect its essential security interests. As Defence Administrative Orders and Directives DAOD 3016-0 puts it, Canada may invoke the NSE only if compliance with a trade agreement could be expected to pose a risk to those interests.

How it is invoked

For procurements covered by trade agreements, the NSE is invoked under section 10(3) of the Canadian International Trade Tribunal Procurement Inquiry Regulations, through an exchange of letters at the assistant deputy minister level between the client department and Public Services and Procurement Canada. PSPC's Supply Manual (section 3.105) requires contracting officers to insert a standard statement in all notifications to suppliers and tender documents where the NSE has been invoked: "This procurement is subject to national security exception and is, therefore, excluded from all of the obligations of the trade agreements." On invocation, the application of the trade agreement rules to the solicitation is suspended to the extent necessary to protect Canada's national security interests — and the CITT must order the dismissal of any complaint about a procurement where the NSE has been properly invoked, and cannot investigate the rationale for the invocation.

The 2024 expansion

In December 2024 the Government of Canada amended the Government Contracts Regulations, adding paragraph 3(1)(i): contracts in respect of which an NSE is properly invoked under CITT Procurement Inquiry Regulations section 10(3) — or contracts indispensable to national security with no applicable trade agreement where the section 10(3) requirements are met — are excepted from the GCRs. That removes, for such procurements, the competition requirement and other obligations the GCRs would otherwise impose, a change legal commentators flagged as significantly expanding the reach of the NSE letter process beyond trade-agreement-only contexts. Treasury Board's Directive on the Management of Procurement remains applicable, since there are no department-wide exclusions for national security.

What it means for vendors

Solicitations carrying an NSE statement fall outside trade-agreement protections: no CITT bid challenge on the merits and no trade-agreement complaint rights on the excluded aspects, and — since December 2024 — generally outside the GCR competition framework too. Expect fewer published details in such tenders, since NSEs are often invoked precisely to avoid disclosing technical requirements, transaction information or suppliers. NSE procurement can still be competitive (major defence procurements are frequently competed under an NSE), so a tender under the exception is not automatically a sole source. Non-NSE obligations — laws, TB Directive, internal procurement policies — continue to apply.

Common questions

Does the NSE remove all rules from a procurement?

No. It suspends trade-agreement obligations (and, post-2024, GCR coverage where properly invoked), but the procurement remains subject to law, the Treasury Board Directive on the Management of Procurement and departmental procurement frameworks.

Who can invoke the NSE?

For PSPC-administered procurements, the authority is not delegated below the ADM of PSPC's Acquisitions Program, acting on a written request from the client department explaining how the procurement relates to Canada's national security interests.

Related definitions

Limited tendering (CFTA) · CFTA procurement valuation · CITT bid challenge · WTO GPA · CETA