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What is the automatic exchange of financial account information?

Short definition

The automatic exchange of information (AEOI) is the global OECD standard under which financial institutions report account information of clients tax-resident abroad to their tax authority, which forwards it to the country of residence. The underlying reporting standard is the Common Reporting Standard (CRS). Switzerland has applied AEOI since 2017.

Since AEOI was introduced, there is hardly any tax discretion left for accounts abroad. For family offices, fiduciaries and asset managers the standard is everyday business: every account opening requires a tax residence self-certification, and every structure must be classified under the CRS.

How it works

Reporting financial institutions, meaning banks, certain insurers, custodians and investment entities, identify the tax residence of account holders and, for certain entities, of controlling persons. For accounts of persons resident in a partner state they report annually name, address, tax identification number, account number, balance and income to the Swiss Federal Tax Administration, which transmits the data to the partner state. Switzerland has collected data since 2017 and exchanged it since 2018.

Entities and structures

Whether a company, foundation or trust is itself a reporting financial institution or an entity whose controlling persons are reported depends on its activity and management. A trust managed by a professional trustee can itself be a reporting institution; a passive entity is reported by the institution holding its account, including its controlling persons. This classification is the real work in family office structures.

Distinction

For the US, the FATCA regime applies instead of AEOI. For crypto-assets, the CARF creates a separate standard. And tax residence information is not the same as establishing the beneficial owner under AML law, even though the questions overlap. Our article on AEOI and FATCA for family offices explains the connections.

Sources and references
  • Federal Act on the International Automatic Exchange of Information in Tax Matters (AEOIA, SR 653.1)
  • OECD: Standard for Automatic Exchange of Financial Account Information (Common Reporting Standard)

Legal position as of October 2026. Not legal advice for an individual case.

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