Maryland Code, Tax-Property § 13-302

(a) Except as otherwise provided in § 13-305 of this subtitle, agricultural land transfer tax is imposed on an instrument of writing that transfers title to agricultural land.

(b) Agricultural land transfer tax is payable in addition to any other transfer tax imposed under this title.

(c) An instrument of writing subject to agricultural land transfer tax may not be recorded in any county until the agricultural land transfer tax is paid to the collector for the county or paid to the Department.

(d) An instrument of writing subject to agricultural land transfer tax may not be filed with the Department until the agricultural land transfer tax is paid to the Department or the collector for the county.