The Council of Europe Convention on Access to Official Documents — known as the Tromsø Convention, catalogued as CETS No. 205 — is the first binding international treaty to recognise a general right of access to official documents held by public authorities. Adopted by the Committee of Ministers in 2008 and opened for signature in the Norwegian city of Tromsø on 18 June 2009, it took more than a decade to gather the ten ratifications required, finally entering into force on 1 December 2020.
What the Convention guarantees
At its core sits a simple entitlement: everyone, without discrimination on any ground, has the right to access, on request, official documents held by public authorities. Applicants do not have to explain why they want a document, and states must help requesters identify what they are looking for. Access is in principle free of charge to inspect, with fees for copies limited to the actual cost of reproduction and delivery.
Limitations are permitted, but on strict conditions. They must be set down in law, be necessary in a democratic society, and serve one of the interests the Convention lists — among them national security, defence and international relations, the prevention and prosecution of crime, privacy, commercial and other economic interests, and the deliberations within or between public authorities on a pending matter. A refusal is only justified where disclosure would harm, or would be likely to harm, a protected interest, and even then not if an overriding public interest speaks for release. Applicants whose requests are denied must have access to review before a court or another independent and impartial body established by law.
Scope and options
The Convention's default scope is administrative: it binds government and administration at all levels, as well as legislative bodies and judicial authorities insofar as they perform administrative functions. States may extend it further — to the legislative and judicial branches in their other activities, or to private bodies exercising public functions — by declaration. Monitoring is entrusted to a Group of Specialists on Access to Official Documents and a Consultation of the Parties, which review implementation and reporting; there is no mechanism for individual complaints.
Why ratification remained limited
For a treaty proclaiming a widely shared democratic principle, the Convention attracted a modest circle of parties — largely Nordic, Baltic, central and south-east European states, with several of the Council of Europe's most populous members staying away altogether. The reasons are partly substantive and partly political.
During the drafting, civil-society organisations and a number of parliamentarians argued that the text codified a floor rather than best practice: its optional coverage of parliaments and courts, the absence of firm maximum response deadlines, and the breadth of permissible exceptions all fell short of the stronger national access laws already in force. Some governments with long-established regimes saw little to gain from binding themselves internationally; others were reluctant to expose their more restrictive arrangements to treaty scrutiny. The result was a convention that neither the most transparent nor the least transparent states felt compelled to join quickly.
The Convention also does not bind the European Union, whose own access regime rests on Regulation 1049/2001 — a framework whose attempted reform produced years of institutional conflict, recounted in the history of the sharpened battle over new EU access rules and the collapse of the 2012 recast. Requesters dealing with EU institutions rely on that regulation, as set out in the guide on how to use European freedom-of-information rules; the Convention's text and state of ratification are published by the Council of Europe's Treaty Office at coe.int.
Frequently asked questions
Is the Tromsø Convention in force?
Yes. It entered into force on 1 December 2020, after the tenth ratification, and binds the states that have ratified it.
Does it create an individual complaints procedure?
No. Applicants must use national review mechanisms — a court or an independent body. The Convention's own bodies monitor implementation at treaty level but do not hear individual cases.
Why does it matter if national laws already exist?
National access laws can be amended or weakened by ordinary legislation. A ratified treaty sets an international minimum standard beneath which domestic law is not supposed to fall.