Maryland Code, Financial Institutions § 3-515

(i) Charge a fee for the management of a common trust fund; or

(ii) Receive from the fund or from any participating account any additional fee, commission, or compensation of any kind because of the participation of the account in the fund.

(i) Those reasonable expenses incurred in the administration of the fund that could have been charged to a separate fiduciary account if that account were not participating in the fund; and

(ii) Reasonable expenses incurred for audits of the fund by independent certified public accountants or court auditors as permitted or required under the fund plan or as otherwise required by law.