55 ILCS 5/6-24001
The board of commissioners of Cook County shall, within the first quarter of each fiscal year adopt a resolution, to be termed the annual appropriation bill, in and by which resolution said board shall appropriate such sums of money as may be necessary to defray all necessary expenses and liabilities of said Cook County, to be by said county paid or incurred during and until the time of the adoption of the next annual appropriation bill under this section: Provided, that said board shall not expend any money or incur any indebtedness or liability on behalf of said county in excess of the percentage and several amounts now limited by law, and based on the limit prescribed in the Constitution, when applied to the last previous assessment. For the year 1931 and each year thereafter, such appropriation bill shall set forth estimates, by classes, of all current assets and liabilities of each fund of such county, as of the beginning of said fiscal year, and the amounts of such assets available for appropriation in such year, either for expenditures or charges to be made or incurred during such year or for liabilities unpaid at the beginning thereof. Such board by resolution may create, set apart and maintain an imprest cash fund for monies which have been advanced by such county for state programs pursuant to law prior to reimbursement by the state for expenses incurred by such county. The monies shown as the balance in such fund in such appropriation bill shall not be considered to be available for appropriation. Estimates of taxes to be received from the levies of prior years shall be net, after deducting amounts estimated to be sufficient to cover the loss and cost of collecting such taxes and also the amounts of such taxes for the nonpayment of which real estate has been or shall be forfeited to the State and abatements in the amount of such taxes extended or to be extended upon the collectors' books. Estimates of the liabilities of the respective funds shall include (a) all final judgments, including accrued interest thereon, entered against such county and unpaid at the beginning of such fiscal year, (b) the principal of all anticipation tax warrants and all temporary loans and all accrued interest thereon unpaid at the beginning of such fiscal year, (c) the principal of all notes issued in anticipation of taxes under the provisions of Division 6-2, and all accrued interest thereon unpaid at the beginning of such fiscal year, and (d) any amount for which the board of commissioners is required to reimburse the working cash fund from the general corporate fund pursuant to the provisions of Division 6-27. Such annual appropriation bill shall also set forth detailed estimates of all taxes to be levied for such year and of all other current revenues to be derived from sources other than such taxes, including any funds authorized by Division 6-6 and any funds made available under Section 5-701.10 of the "Illinois Highway Code", approved July 8, 1959, as amended, which will be applicable to expenditure or charges to be made or incurred during such year. No estimate of taxes to be levied for general corporate purposes, or for any other purpose, except for the payment of bonded indebtedness or interest thereon, and except for pension fund purposes or working cash fund purposes, shall exceed a sum equivalent to the product of the value of the taxable property in such county, as ascertained by the last assessment for state and county taxes previous to the passage of such annual appropriation bill, multiplied by the maximum per cent or rate of tax which such county is authorized by law to levy for said current fiscal year for any such purpose or purposes with reference to which such estimate is made. All such estimates shall be so segregated and classified as to funds and in such other manner as to give effect to the requirements of law relating to the respective purposes to which said assets and taxes and other current revenues are applicable, to the end that no expenditure shall be authorized or made for any purpose in excess of funds lawfully available therefor, including any funds authorized by Division 6-6 and any funds made available under Section 5-701.10 of the "Illinois Highway Code," approved July 8, 1959, as amended.
55 ILCS 5/6-24001