Miss. Code § 27-51-42.2
The board of supervisors of any county is authorized to grant an exemption from motor vehicle ad valorem taxes in the amount of One Hundred Dollars ($100.00) or the amount of ad valorem taxes due, whichever is the lesser amount, on one (1) motor vehicle owned by each resident of the county who is in active service as a volunteer fire fighter for any municipality, county or fire district in the state. To receive the tax exemption, such person must make application, under oath, with the county fire coordinator on a form prepared by the State Tax Commission, and present evidence that he or she is actively serving as a volunteer fire fighter and has continuously served in such capacity for at least three (3) consecutive years before making application for the tax credit under this section. The county fire coordinator shall review all such applications and shall certify to the county tax collector each person whom he determines to qualify for the tax credit. The State Fire Marshal shall promulgate rules and regulations to assist county fire coordinators in defining and prescribing those persons who may qualify for the tax credit under this section as active service volunteer fire fighters.
Miss. Code § 27-51-42.2