Faisal KhanAnswered Jan 2, 20145 Years at the very minimum. This is mandated by the Bank Secrecy Act Manual - Particular reference is: http://www.ffiec.gov/bsa_aml_inf...Record RetentionRecord KeepingBank Secrecy Act (BSA)Anti-Money Laundering (AML) AmericasDeveloped MarketsNorth AmericaUnited States