Maryland Statutes
Subtitle 1 - Taxes
Section 6-112 - Local Tax Prohibited

(a)    Except for a property tax, a county or municipal corporation of the State may not impose a tax on a person subject to taxation under this subtitle.
    (b)    This section does not exempt shares of stock of a domestic corporation from the property tax and assessment merely because the shares are owned by a person subject to taxation under this subtitle.