55 ILCS 5/5-1135
Borrowing from financial institutions. The county board of a county may borrow money for any corporate purpose from any bank or other financial institution provided such money shall be repaid within 2 years from the time the money is borrowed. The county board chairman or county executive, as the case may be, shall execute a promissory note or similar debt instrument, but not a bond, to evidence the indebtedness incurred by the borrowing. The obligation to make the payments due under the promissory note or other debt instrument shall be a lawful direct general obligation of the county payable from the general funds of the county and such other sources of payment as are otherwise lawfully available. The promissory note or other debt instrument shall be authorized by an ordinance passed by the county board and shall be valid whether or not an appropriation with respect to that ordinance is included in any annual or supplemental appropriation adopted by the county board. The indebtedness incurred under this Section, when aggregated with the existing indebtedness of the county, may not exceed any debt limitation otherwise provided for by law. "Financial institution" means any bank subject to the Illinois Banking Act, any savings and loan association subject to the Illinois Savings and Loan Act of 1985, any savings bank subject to the Savings Bank Act, any credit union subject to the Illinois Credit Union Act, and any federally chartered commercial bank, savings and loan association, savings bank, or credit union organized and operated in this State pursuant to the laws of the United States.
55 ILCS 5/5-1135