The
"minimum retention period" , for a financial transaction document of a
financial institution, is—
(a) if the document relates to the opening of an account with the institution—the 7 years after the day the account is closed; or
(b) if the document relates to the opening by a person of a deposit box held by the institution—the 7 years after the day the deposit box ceases to be used by the person; or
(c) otherwise—the 7 years after the day the transaction takes place.