Maryland Statutes
Subtitle 6 - Sales and Use Taxes; User Fees; Gross Receipts Tax
Section 20-601 - County Tax on Controlled Dangerous Substances

(a)    Except as provided in subsection (b) of this section, a county may impose a sales or use tax on controlled dangerous substances as defined in § 5–101 of the Criminal Law Article.
    (b)    A county may not impose a sales or use tax under subsection (a) of this section on sales by a person who complies with Title 5, Subtitle 3 of the Criminal Law Article.