The board of supervisors of any county having a plan or contract for reappraisal which has been approved by the State Tax Commission may annually levy an ad valorem tax on all the taxable property within the county, in an amount necessary to defray the cost of reappraisal. The funds derived from the levy shall be placed in a special account and shall be used only for the expenses involved in reappraisal or for repaying any amounts of indebtedness incurred for that purpose. The board may borrow money or issue its notes at the rate of interest to maturity allowed in Section 75-17-105 for the purposes of reappraisal and may pledge the avails of the levy authorized herein for the payment of the principal of and the interest on the indebtedness. The indebtedness incurred for the purpose of defraying the cost of reappraisal shall not be included in computing the debt limit of the county under any present or future law.

No board of supervisors shall make the levy authorized herein for a period of years longer than necessary to pay for reappraisal of property within the county or to repay any indebtedness authorized herein. Provided, however, an ad valorem tax on all the taxable property within the county may be levied in an amount sufficient to defray the cost of maintaining and updating appraisals and an ownership mapping system including, but not limited to, costs for the purchase and maintenance of computer equipment and motor vehicles and costs for computer services and remuneration of certified appraisers and other necessary personnel. The tax levies authorized herein shall not be included in the ten percent (10%) limitation on increases under Section 27-39-321.

This section shall also apply to the board of supervisors of any county which has reappraised in compliance with the State Tax Commission regulations and has an outstanding indebtedness incurred to fund such reappraisal of property.

The tax levies authorized in this section shall not be reimbursable under the provisions of the Homestead Exemption Law of this state.