Md. Code, Local Government § 20–107

(a) This section applies to all counties, except:

(1) Anne Arundel County;

(2) Baltimore City;

(3) Baltimore County;

(4) Cecil County;

(5) Howard County;

(6) Prince George’s County;

(7) Queen Anne’s County; and

(8) Worcester County.

(b) The provisions of §§ 9–105 and 9–106 of this article apply to an act, an

ordinance, or a resolution adopted by a commission county under this section.

(c) A county may provide for the prompt collection of taxes by authorizing

discounts or imposing penalties.