Maryland Code, Insurance § 20-405

(a) In this section, “net direct written premiums” means direct gross premiums written on all policies of motor vehicle liability insurance and motor vehicle physical damage insurance less return premiums or dividends paid or credited to policyholders with respect to those policies.

(b) On or before June 30 of each year in which the Board of Directors receives the certification of an actual commercial auto or private passenger auto assessment for a preceding calendar year, the Board of Directors shall perform the duties specified in this section.

(c) The Board of Directors shall obtain from the Commissioner the aggregate net direct written premiums of all Association members during the most recent calendar year determined by the Commissioner for commercial auto and private passenger auto divisions of motor vehicle liability insurance and motor vehicle physical damage insurance.

(e) The Board of Directors shall give notice of the assessment allocation percentages determined under this section to the Fund, the Commissioner, and all Association members.

(f) The Board of Directors promptly shall assess and collect from each Association member for the commercial auto and private passenger auto divisions an assessment obtained by:

(g) An Association member may deduct an assessment payment from a retaliatory tax but may not deduct the payment from any other assessment or tax required by law.