Miss. Code Ann. § 27-35-313: Miss. Code Ann. § 27-35-313

So soon as the assessment rolls have remained subject to objection for twenty (20) days, and when all objections, if any, are disposed of, the assessment rolls shall be approved by the Department of Revenue, and a certified copy of the assessment rolls shall be sent immediately to the clerks of the board of supervisors of the respective counties, who shall file and preserve it as a record.