55 ILCS 5/6-3006
The resolution of the county board authorizing the issuance of bonds shall prescribe the details of the bonds and specify the total amount of the bonds to be issued, the form and denomination of the bonds, the date which they bear, the place they are payable, the date or dates of maturity, which shall not be more than 30 years after the date of the bonds, the rate of interest, which shall not exceed the greater of (i) the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, or (ii) 8% per annum, and the dates on which the interest is payable.
With respect to instruments for the payment of money issued under this Section or its predecessor either before, on, or after the effective date of Public Act 86-4, it is and always has been the intention of the General Assembly (i) that the Omnibus Bond Acts are and always have been supplementary grants of power to issue instruments in accordance with the Omnibus Bond Acts, regardless of any provision of this Division or "An Act to authorize certain counties to incur an indebtedness and issue bonds for the construction of county jails and sheriffs' residences", filed July 3, 1935, that may appear to be or to have been more restrictive than those Acts, (ii) that the provisions of this Section or its predecessor are not a limitation on the supplementary authority granted by the Omnibus Bond Acts, and (iii) that instruments issued under this Section or its predecessor within the supplementary authority granted by the Omnibus Bond Acts are not invalid because of any provision of this Division or "An Act to authorize certain counties to incur an indebtedness and issue bonds for the construction of county jails and sheriffs' residences", filed July 3, 1935, that may appear to be or to have been more restrictive than those Acts.
55 ILCS 5/6-3006