Md. Code, Public Safety § 5–304

(a) An application for a permit shall be made under oath.

(b) (1) Subject to subsections (c) and (d) of this section, the Secretary may charge a nonrefundable fee payable when an application is filed for a permit.

(2) The fee may not exceed:

(i) $125 for an initial application;

(ii) $75 for a renewal or subsequent application; and

(iii) $20 for a duplicate or modified permit.

(3) The fees under this subsection are in addition to the fees authorized under § 5–305 of this subtitle.

(c) The Secretary may reduce the fee under subsection (b) of this section accordingly for a permit that is granted for one day only and at one place only.

(d) The Secretary may not charge a fee under subsection (b) of this section to:

(1) a State, county, or municipal public safety employee who is required to carry, wear, or transport a handgun as a condition of governmental employment; or

(2) a retired law enforcement officer of the State or a county or municipal corporation of the State.

(e) The applicant shall pay a fee under this section by an electronic check, a credit card, or a method of online payment approved by the Secretary.