European Banking Supervision

European Banking Supervision, also known as the Single Supervisory Mechanism (SSM), is the policy framework for the prudential supervision of banks in the euro area. It is centered on the European Central Bank (ECB), whose supervisory arm is referred to as ECB Banking Supervision. EU member states outside of the euro area can also participate on a voluntary basis, as was the case of Bulgaria as of late 2023. European Banking Supervision was established by Regulation 1024/2013 of the Council, also known as the SSM Regulation, which also created its central (albeit not ultimate) decision-making body, the ECB Supervisory Board.

Under European Banking Supervision, the ECB directly supervises the larger banks that are designated as Significant Institutions. The other banks, known as Less Significant Institutions, are supervised by national banking supervisors ("national competent authorities") under supervisory oversight by the ECB. As of late 2022, the ECB directly supervised 113 Significant Institutions in the 21 countries within its geographical scope of authority, representing around 85% of the banking system's total assets (excluding financial infrastructures that are designated as LSIs such as Euroclear in Belgium, Banque Centrale de Compensation in France, or Clearstream in Germany and Luxembourg).^[2]

European Banking Supervision represents the initial and so far most complete component of the broader banking union, a project initiated in 2012 to integrate banking sector policy in the euro area. The unfinished piece of the banking union agenda is about crisis management and resolution, for which the so-called Single Resolution Mechanism coexists with national arrangements for deposit insurance and other aspects of the bank crisis management framework. The policy agenda on the completion of the banking union, stalled since June 2022, also includes options for the regulatory treatment of sovereign exposures.