Maryland Tax - General Section 9-323

      (a)      Except as provided in subsection (b) of this section, a license or an exemption certificate expires on the first May 31 after its effective date.

      (b)      A Class "G-Temporary" license expires on the earlier of:

            (1)      termination of the contract for which the license was issued; or

            (2)      the first May 31 after its effective date.