Answer
Swiss banks are world-renowned for their stability, privacy and protection of clients. all banks in switzerland are regulated by swiss banking law (banking law of 1934, amended 1999) which strictly limits any information shared with third parties, including foreign governments. in general, there is no simple way to trace the source of money placed on deposit with a swiss bank, as they do not disclose client information. although switzerland has a historic reputation for bank secrecy and numbered bank accounts, in practice all private bank accounts are not anonymous as they are linked to an identified individual under swiss banking law. however, this law also allows swiss banks to refuse to give any information to investigating authorities unless there are exceptional circumstances.
