Mississippi Code Title 27. Taxation and Finance § 27-35-49

It shall be the duty of the tax assessor to assess all the lands in his county and he shall require the owner, agent, or person having possession, or charge, of any lands, to render a list of all lands owned, or in charge, or in possession, of such owner, agent or person, and land shall be appraised according to its true value and assessed in proportion thereto, taking into consideration the improvements thereon.

Every person owning or being in possession, or in charge, of any land shall deliver to the tax assessor on demand, and in any event, not later than April first in each year, a list of all lands owned by, or in possession, or in charge, made out on the tax lists prescribed; and showing the total number of acres (except the land be platted by blocks and lots), the total number of acres of cultivatable lands and the value thereof, and the number of acres of uncultivatable land and the value thereof and the number of acres devoted to agricultural purposes as of January 1 of each year; and buildings or improvements subject to taxation on any lands returned for assessment. If the lands be surveyed and platted, it shall be returned so as to clearly identify it by the recorded plat thereof, and the list rendered shall disclose the value of each lot and the value of any buildings, structures, or improvements thereon. Any person required by this section to render a list of any lands shall show in what road district, school district, levee district, municipality, or other taxing district, the same is located. If any person shall deliver or disclose to an assessor, or deputy assessor, a list, statement or return in regard to his land which, in the opinion of the assessor, or deputy assessor, is false or fraudulent, or contains any understatement or undervaluation, or fails to show the proper classification of lands, or fails to show buildings and improvements, or other elements of value, the assessor shall make an assessment of the land with the proper classification thereof including the omitted things, at a valuation equal to the value at which like lands similarly situated are assessed. Lands not given in by any person shall be assessed in the same manner by the assessor at a valuation equal to the assessment of other like lands similarly situated and all buildings and improvements, or other elements of value shall in all cases be separately valued and assessed.