Md. Code, Insurance § 8–607

(a) A registration expires at the end of every other year on the anniversary of the registration unless it is renewed as provided in this section.

(b) Before a registration expires, the registrant may renew it for an additional 2-year term, if the registrant:

(1) otherwise is entitled to be registered;

(2) files with the Commissioner a renewal application on the form that the Commissioner requires; and

(3) pays to the Commissioner a renewal fee of $50.

(c) An application for renewal of a registration shall be considered made in a timely manner if it is postmarked on or before the anniversary date of the registration of the year of renewal.