The European Central Bank’s 2016 annual review of the significance of credit institutions brought the number of banks directly supervised by the ECB at 127.

Moreover, due to its increased size, Citibank Holdings Ireland Ltd has been identified as being significant and will therefore now be directly supervised by the ECB as of 1st January 2017.

Annually, the ECB assesses credit institutions, financial holding companies and mixed financial holding companies established under the EU, in order to determine whether they fulfil the significant criteria. This assessment is done in accordance with the Single Supervisory Mechanism, and it includes the total assets and cross-border activities.

Following this assessment, banks are classified as being either significant or less significant. Credit institutions classified as significant will be directly supervised by the ECB, whereas less significant ones will be supervised by their national competent authority, subject to the ECB’s oversight.

The complete ECB list of significant and less significant institutions can be accessed here.