Records of accounts required by § 1010.350 to be reported to the Commissioner of Internal Revenue shall be retained by each person having a financial interest in or signature or other authority over any such account. Such records shall contain the name in which each such account is maintained, the number or other designation of such account, the name and address of the foreign bank or other person with whom such account is maintained, the type of such account, and the maximum value of each such account during the reporting period. Such records shall be retained for a period of 5 years and shall be kept at all times available for inspection as authorized by law. In the computation of the period of 5 years, there shall be disregarded any period beginning with a date on which the taxpayer is indicted or information instituted on account of the filing of a false or fraudulent Federal income tax return or failing to file a Federal income tax return, and ending with the date on which final disposition is made of the criminal proceeding.
31 C.F.R. §1010.420