Maryland Code, Financial Institutions § 12-803

(a) A financial institution shall keep a record of currency transactions in excess of $10,000 and shall file with the Department within 15 days of the date of the transaction pursuant to regulations adopted by the Secretary a complete report of currency transactions in excess of $10,000.

(b) The reporting requirements of this section are complied with if:

(c) The Secretary shall adopt regulations to carry out the purposes of this subtitle and to provide for the exemption of transactions which are clearly of a legitimate nature and for which mandatory reporting would serve no useful purpose.

(d) A transaction that is exempt from reporting by a financial institution under federal law is also exempt from the reporting requirements of this subtitle.