Ga. Code § 32-10-92
Bonds issued by the authority shall be authorized by resolution of the authority, be in such denominations, bear such date or dates, and mature at such time or times within 40 years from the issuance thereof as the authority determines to be appropriate. Such bonds shall be subject to such terms of redemption, bear interest at such rate or rates payable at such times, be in registered form or book-entry form through a securities depository, or both, as to principal or interest or both principal and interest, carry such registration privileges, be executed in such manner, be payable in such medium of payment at such place or places, and be subject to such terms and conditions as such resolution of the authority may provide; provided, however, in lieu of specifying the rate or rates of interest which the bonds to be issued by an authority are to bear, the resolution of the authority may provide that the bonds when issued will bear interest at a rate not exceeding a maximum per annum rate of interest which may be fixed or may fluctuate or otherwise change from time to time as specified in the resolution or may state that, in the event the bonds are to bear different rates of interest for different maturity dates, none of such rates will exceed the maximum rate, which rate may be fixed or may fluctuate or otherwise change from time to time, as specified. Bonds may be sold at public or private sale for such price or prices as the authority shall determine.
OCGA § 32-10-92