Md. Code, Alcoholic Beverages and Cannabis § 18–1102

(a) The Board may issue a refillable container permit for draft beer to a holder of a Class A license, a Class B license, or a Class C license.

(b) An applicant for the permit shall complete the form that the Board provides.

(c) The hours of sale for the permit:

(1) begin at the same time as those for the underlying license; and

(2) end at midnight.

(d) The annual permit fees are:

(1) $50 for an applicant whose license has an off–sale privilege; and

(2) $500 for an applicant whose license does not have an off–sale privilege.