Exequatur

An exequatur is the official act by which a host government recognizes and admits a foreign consul, consul-general, or other consular officer, allowing them to perform their duties on its territory. The instrument is rooted in customary practice and codified in Article 12 of the Vienna Convention on Consular Relations (1963), which states that the head of a consular post is admitted to the exercise of his functions by an authorization from the receiving state termed an exequatur, whatever the form of this authorization.

The process typically begins when the sending state issues a consular commission (lettre de provision) identifying the appointee, post, and consular district. The receiving state reviews this document and, at its discretion, issues the exequatur — often as a decree, diplomatic note, or endorsement on the commission itself. Until granted, the officer cannot officially perform consular functions, though provisional admission is permitted under Article 13.

Key features:

• Discretionary: The receiving state is not obliged to give reasons if it refuses (Art. 12(2)).
• Revocable: An exequatur may be withdrawn, effectively ending the officer's consular status, comparable to a declaration of persona non grata for diplomats under the Vienna Convention on Diplomatic Relations (1961).
• Post-specific: It authorizes activity only within the assigned consular district.

Exequaturs apply to both career and honorary consuls, though states often scrutinize honorary appointments more closely given commercial conflicts of interest. The instrument is distinct from a diplomatic agrément, which concerns ambassadors and chiefs of mission. In practice, refusal or revocation of an exequatur is a measured signal of displeasure — less severe than expelling an ambassador but consequential for consular services such as visa issuance, notarial acts, and assistance to nationals.