The AEOI standard provides for certain banks, collective investment vehicles and insurance companies to collect clients' financial information where these clients are tax residents abroad. This information includes all types of investment income and the account balance.
The information is transmitted to the Federal Tax Administration FTA, which forwards the data to the foreign tax authority responsible for the client. This transparency is intended to prevent tax base erosion as a result of tax being hidden from the tax authorities abroad.
The State Secretariat for International Finance (SIF) is responsible for coordination and strategic management in international financial and tax matters. The list of all partner states with which Switzerland has concluded an AEOI agreement is therefore published on the SIF website. The FTA is responsible for the enforcement of the AEOI.
Please find here the document regarding the Automatic Exchange of Information (AEOI).