Maryland Code, Election Law § 12-309

(i) $20 for each of the first 7 days;

(ii) $35 for each of the following 7 days; and

(iii) $50 for each day thereafter.

(b)(1)(i) Subject to subparagraph (ii) of this paragraph, a late filing fee under this section shall be paid by the contested election committee.

(ii) If the contested election committee has insufficient funds with which to pay the full amount of the late filing fee in a timely manner, after the account of the contested election committee is exhausted the balance of the late filing fee is the liability of the treasurer.

(3)(i) The State Board shall accept an overdue report that is submitted without payment of the late filing fee, but the report is not considered filed until the fee has been paid.

(ii) After an overdue report is received under subparagraph (i) of this paragraph, no further late filing fee shall be incurred.