evidence: Swiss banks have been practising automatic exchange of information (AEOI) with their foreign counterparts since 2017. Find out how it works below. [...] AEOI is especially relevant to Switzerland because it is a leading international financial centre with customers all over the world. The country has fully implemented AEOI in order to ensure that it meets the international standard. Sharing data across national borders has thus become the norm – for both the banks and their customers. Switzerland has been sharing information on millions of cash and custody accounts with AEOI partner states annually since 2018. It now has AEOI agreements with more than 100 countries, and the network is growing steadily. Information will only be shared with additional states once they achieve full compliance with the international AEOI criteria.