Md. Code, Alcoholic Beverages and Cannabis § 1-312
§1–312.
By regulation, the Executive Director may:
(1) establish or prohibit the maximum discounts that may be allowed by a manufacturer, wholesaler, or nonresident winery permit holder in the sale and distribution of wine and liquor; or
(2) prohibit the giving of discounts by a manufacturer, wholesaler, or nonresident winery permit holder in the sale and distribution of wine and liquor.