Md. Code, Transportation § 13–933

(a) When registered with the Administration, every bus operated under charter or for hire is a Class P (passenger bus) vehicle.

(b) (1) Subject to paragraph (2) of this subsection, for each Class P (passenger bus) vehicle, the annual registration fee is based on the seating capacity of the bus, as follows:

Seating Capacity Fee

20 or less $275.00

21 to 35 525.00

36 or more 875.00

(2) (i) On or after July 1, 2024, but before July 1, 2025, the annual registration fee under paragraph (1) of this subsection is increased by an additional $20.00.

(ii) On or after July 1, 2025, the annual registration fee under paragraph (1) of this subsection is increased by an additional $30.00.