Except as otherwise provided for excess revenues generated by a county in accordance with subsection (3) of Section 27-39-321 or subsection (2) of Section 27-39-320, if revenue collected as the result of any individual levy referred to in Section 27-39-321 or the aggregate revenue collected from all levies referred to in Section 27-39-320 which are limited to an increase of not more than ten percent (10%) over the receipts from the same for any one (1) of the immediately preceding three (3) fiscal years, as determined by the levying governing authority, exceeds such limit, then it shall be the mandatory duty of the chancery clerk of each county and the clerk of each municipality to deposit such excess receipts over and above the ten percent (10%) increase limitation into a special account and credit it to the fund for which such levy was made. It will be the further duty of the chancery clerk and the city clerk to hold said funds and invest the same as authorized by law and to report the total to the board of supervisors or the municipal governing authorities, as the case may be, at its regular August meeting of each year. Such excess funds shall be calculated in the budgets for the county and for the municipality, respectively, for the purpose for which such levies were made, for the succeeding fiscal year. Taxes imposed for the succeeding year shall be reduced by the amount of excess funds available.

Under no circumstances shall such excess funds be expended during the fiscal year in which such excess funds are collected.