Division 1. Levying Process  

    (35 ILCS 200/18-10)
    Sec. 18-10. County levies. The county board of each county with less than 3,000,000 inhabitants shall, annually, at the September session, determine the amount of county taxes to be levied for all purposes. Any county with less than 3,000,000 inhabitants which has changed its fiscal year may, at the September session or at any adjourned meeting thereof, instead of determining the amount of all county taxes to be levied for a one-year period, determine the amount of taxes to be levied during a period greater or less than a year as required by the change of the fiscal year. The county board of each county with 3,000,000 or more inhabitants shall, annually, prior to the third Monday of March, determine the amount of county taxes to be levied for all purposes. The amount for each purpose shall be stated separately. All counties shall certify to the county clerk annually, on or before the last Tuesday in December the amounts that they have levied.
(Source: P.A. 87-17; 88-455.)

    (35 ILCS 200/18-15)
    Sec. 18-15. Filing of levies of taxing districts.
    (a) Notwithstanding any other law to the contrary, all taxing districts, other than a school district subject to the authority of a Financial Oversight Panel pursuant to Article 1H of the School Code, shall annually certify to the county clerk, on or before the last Tuesday in December, the several amounts that they have levied.
    (b) A school district subject to the authority of a Financial Oversight Panel pursuant to Article 1H of the School Code shall file a certificate of tax levy, necessary to effect the implementation of the approved financial plan and the approval of the Panel, as otherwise provided by this Section, except that the certificate must be certified to the county clerk on or before the first Tuesday in November.
    (c) If a school district as specified in subsection (b) of this Section fails to certify and return the certificate of tax levy, necessary to effect the implementation of the approved financial plan and the approval of the Financial Oversight Panel, to the county clerk on or before the first Tuesday in November, then the Financial Oversight Panel for the school district shall proceed to adopt, certify, and return a certificate of tax levy for the school district to the county clerk on or before the last Tuesday in December.
(Source: P.A. 97-429, eff. 8-16-11.)

    (35 ILCS 200/18-20)
    Sec. 18-20. Abatement of levies.
    (a) Notwithstanding any other law to the contrary, if any taxing district receives funds under Section 12 of the State Revenue Sharing Act, which may lawfully be used by the district, the governing authority of the district, upon determining that a surplus of funds is available for any purpose, shall adopt a resolution or ordinance reducing its tax levy for the year for which the resolution or ordinance is adopted.
    (b) If any taxing district reduces its levy, the governing authority of the district shall certify its action to the county clerk of each county collecting those taxes. The county clerk shall abate the levy of the district in accordance with the provisions of the certified resolution or ordinance.
(Source: P.A. 81-1255; 88-455.)

    (35 ILCS 200/18-25)
    Sec. 18-25. County clerk to provide collector's books. The county clerk shall, annually, make out for the use of collectors, in books to be furnished by the county, correct lists of taxable property, as assessed and equalized.
(Source: Laws 1939, p. 886; P.A. 88-455.)

    (35 ILCS 200/18-30)
    Sec. 18-30. Books by township. In counties not under township organization, the collector's books shall be made up by congressional townships; but fractional townships may be added to full townships, at the discretion of the county board. In counties under township organization, the books shall correspond with the organized townships. Separate books may be made for the collection of all taxes within the corporate limits of cities, incorporated towns and villages. These books shall be in addition to the tax book provided for in this Code, for the use of county collectors, for collecting taxes against railroad property.
(Source: Laws 1939, p. 886; P.A. 88-455.)

    (35 ILCS 200/18-35)
    Sec. 18-35. Collector's books; columns. Each county clerk shall prepare the collector's books with 4 columns for the value of each property, the first to show the assessed value by the chief county assessment officer, the second to show the value as corrected by the board of review or board of appeals, the third to show the value as equalized by the board of review under Sections 16-60 and 16-65, and the fourth to show the value as equalized or assessed by the Department. Such books may be created, transmitted, and stored in an electronic format. If a municipality has adopted tax increment allocation financing under Division 74.4 of Article 11 of the Illinois Municipal Code, the county clerk, or clerks if a municipality is located in more than one county, shall provide additional columns for the initial equalized assessed value, for the extension of the taxes and other purposes, and for the amount of the tax to be deposited in the special tax allocation fund. The books also shall contain a column to insert opposite each parcel of property any tax sale or forfeiture for taxes or special assessments for the 2 preceding years not canceled or withdrawn from collection at any tax sale. Tax sales shall be designated by the word "sold", forfeited, withdrawn or other appropriate designation to be stamped in the proper column opposite the property listing not released prior to December 1st of each year. Each county collector shall stamp upon all receipts given for taxes the information in those columns, to be known as the tax sale column and the delinquent special assessment column. The county clerk shall collect the same fee for stamping forfeitures, as for tax sales and withdrawals.
(Source: P.A. 98-840, eff. 8-1-14.)

    (35 ILCS 200/18-40)
    Sec. 18-40. Application of equalization factor. Each county clerk shall apply the percentages certified by the Department and enter the equalized valuations in the columns provided for that purpose. The percentages certified by the Department shall be applied to the assessed valuation of property, as corrected and equalized by the board of review, board of appeals, or local assessment officers. In all cases of extension of valuations where the equalized valuations are fractional, the clerk shall reject all fractions that fall below 50¢. Fractions of 50¢ or more shall be extended as $1.
    If the equalized assessed value of any property is less than $150 for an assessment year, the county clerk may declare the imposition and collection of all tax for that year to be extended on the parcel to be unfeasible and cancelled. No tax shall be extended or collected on the parcel for that year and the parcel shall not be sold for delinquent taxes.
(Source: P.A. 85-312; 88-455.)

    (35 ILCS 200/18-45)
    Sec. 18-45. Computation of rates. Except as provided below, each county clerk shall estimate and determine the rate per cent upon the equalized assessed valuation for the levy year of the property in the county's taxing districts and special service areas, as established under Article VII of the Illinois Constitution, so that the rate will produce, within the proper divisions of that county, not less than the net amount that will be required by the county board or certified to the county clerk according to law. Prior to extension, the county clerk shall determine the maximum amount of tax authorized to be levied by any statute. If the amount of any tax certified to the county clerk for extension exceeds the maximum, the clerk shall extend only the maximum allowable levy.
    The county clerk shall exclude from the total equalized assessed valuation, whenever estimating and determining it under this Section and Sections 18-50 through 18-105, the equalized assessed valuation in the percentage which has been agreed to by each taxing district, of any property or portion thereof within an Enterprise Zone upon which an abatement of taxes was made under Section 18-170. However, if a municipality has adopted tax increment financing under Division 74.4 of Article 11 of the Illinois Municipal Code, the county clerk shall estimate and determine rates in accordance with Sections 11-74.4-7 through 11-74.4-9 of that Act. Beginning on January 1, 1998 and thereafter, the equalized assessed value of all property for the computation of the amount to be extended within a county with 3,000,000 or more inhabitants shall be the sum of (i) the equalized assessed value of such property for the year immediately preceding the levy year as established by the assessment and equalization process for the year immediately prior to the levy year, (ii) the equalized assessed value of any property that qualifies as new property, as defined in Section 18-185, or annexed property, as defined in Section 18-225, for the current levy year, and (iii) any recovered tax increment value, as defined in Section 18-185, for the current levy year, less the equalized assessed value of any property that qualifies as disconnected property, as defined in Section 18-225, for the current levy year.
(Source: P.A. 90-320, eff. 1-1-98.)

    (35 ILCS 200/18-50)
    Sec. 18-50. Filing of budget and appropriation ordinance. The governing authority of each taxing district shall file with the county clerk within 30 days of their adoption a certified copy of its appropriation and budget ordinances or resolutions, as well as an estimate, certified by its chief fiscal officer, of revenues, by source, anticipated to be received by the taxing district in the following fiscal year. If the governing authority fails to file the required documents, the county clerk shall have the authority, after giving timely notice of the failure to the taxing district, to refuse to extend the tax levy until the documents are so filed.
    In determining the amount of maximum tax authorized to be levied by any statute of this State, the assessed valuation of the current year of property as assessed and reviewed by the local assessment officials or the Department, and as equalized or confirmed by the Department, shall be used.
(Source: P.A. 86-233; 86-953; 86-957; 86-1475; 87-17; 87-477; 87-895; 88-455.)

    (35 ILCS 200/18-50.1)
    Sec. 18-50.1. School Finance Authority and Financial Oversight Panel levies.
    (a) Notwithstanding any other law to the contrary, any levy adopted by a School Finance Authority created under Article 1F of the School Code is valid and shall be extended by the county clerk if it is certified to the county clerk by the Authority in sufficient time to allow the county clerk to include the levy in the extension for the taxable year.
    (b) Notwithstanding any other law to the contrary, any levy adopted by a Financial Oversight Panel created under Article 1H of the School Code and levied pursuant to Section 1H-75 of the School Code is valid and shall be extended by the county clerk if it is certified to the county clerk by the Panel in sufficient time to allow the county clerk to include the levy in the extension for the taxable year.
(Source: P.A. 97-429, eff. 8-16-11.)