Maryland Code § 5

§ 5.

    Notwithstanding any other provision in this Article, the General Assembly may enact, amend, or repeal local laws placing a maximum limit on the rate of which property taxes may be imposed by any such municipal corporation and regulating the maximum amount of debt which may be incurred by any municipal corporation. However, no such local law shall become effective in regard to a municipal corporation until and unless it shall have been approved at a regular or special municipal election by a majority of the voters of that municipal corporation voting on the question. No such municipal corporation shall levy any type of tax, license fee, franchise tax or fee which was not in effect in such municipal corporation on January 1, 1954, unless it shall receive the express authorization of the General Assembly for such purpose, by a general law which in its terms and its effect applies alike to all municipal corporations in one or more of the classes provided for in Section 2 of this Article. All charter provisions enacted under the authority of Section 3 of this Article shall be subject to any local laws enacted by the General Assembly and approved by the municipal voters under the provisions of this section.