Ga. Const. art. IX, § V, para. V

Temporary loans authorized. The governing authority of any county, municipality, or other political subdivision of this state may incur debt by obtaining temporary loans in each year to pay expenses. The aggregate amount of all such loans shall not exceed 75 percent of the total gross income from taxes collected in the last preceding year. Such loans shall be payable on or before December 31 of the calendar year in which such loan is made. No such loan may be obtained when there is a loan then unpaid obtained in any prior year. No such county, municipality, or other political subdivision of this state shall incur in any one calendar year an aggregate of such temporary loans or other contracts, notes, warrants, or obligations for current expenses in excess of the total anticipated revenue for such calendar year.