Md. Code, Economic Development § 10–129

(a) Except as provided in subsection (b) of this section, the Corporation is exempt from any requirement to pay taxes or assessments on its properties or activities, or any revenue from its properties or activities.

(b) Property that the Corporation sells or leases to a private entity is subject to State and local real property taxes from the time of the sale or lease.

(c) The bonds of the Corporation, including the interest on the bonds, are forever exempt from all State and local taxes.