UVNS performs expert and administrative functions for the National Security Council and the Council for the Coordination of Security and Intelligence Agencies, performs functions which facilitate the National Security Council to analyse the reports of security and intelligence agencies and to evaluate the fulfilment of the objectives set for security and intelligence agencies, to evaluate the implementation of the decisions of the President of the Republic and the President of the Government on directing the work of security and intelligence agencies, and the functions facilitating the President of the Republic and the President of the Government to supervise the performance of security and intelligence agencies. 

UVNS integrates the reports and the information received from security and intelligence agencies, drafts periodic reports covering different areas of security and intelligence activity, and analyses and evaluates the security and intelligence information relevant for the national security of the Republic of Croatia and essential for the execution of constitutional and legal powers of the President of the Republic and the President of the Government. 

At the request of the President of the Republic and the President of the Government UVNS cooperates with security and intelligence agencies in drafting the strategic assessments and evaluations of the security-related developments relevant for the national security of the Republic of Croatia. 

UVNS is the Croatian NSA, which coordinates, harmonizes the adoption and controls the implementation of information security measures in the Republic of Croatia.