Md. Code, Alcoholic Beverages and Cannabis § 24–1408

(a) If a license holder voluntarily surrenders the license before its expiration date, the Board shall grant a refund:

(1) based on the number of whole months remaining before the license expiration date; and

(2) calculated as 1/12 of 95% of the license fee paid for each whole month remaining before the license expiration date.

(b) A refund shall be paid not later than 3 weeks after the license is surrendered to the Board.