20 ILCS 620/7
If a municipality has adopted tax increment allocation financing for an economic development project area by ordinance, the county clerk has thereafter certified the "total initial equalized assessed value" of the taxable real property within such economic development project area in the manner provided in Section 6 of this Act, and the Department has approved and certified the economic development project area, each year after the date of the certification by the county clerk of the "total initial equalized assessed value" until economic development project costs and all municipal obligations financing economic development project costs have been paid, the ad valorem taxes, if any, arising from the levies upon the taxable real property in the economic development project area by taxing districts and tax rates determined in the manner provided in subsection (b) of Section 6 of this Act shall be divided as follows:
The municipality, by an ordinance adopting tax increment allocation financing, may pledge the funds in and to be deposited in the special tax allocation fund for the payment of obligations issued under this Act and for the payment of economic development project costs. No part of the current equalized assessed valuation of each property in the economic development project area attributable to any increase above the total initial equalized assessed value, of such properties shall be used in calculating the general State school aid formula, provided for in Section 18-8 of the School Code, or the evidence-based funding formula, provided for in Section 18-8.15 of the School Code, until such time as all economic development projects costs have been paid as provided for in this Section.
When the economic development project costs, including without limitation all municipal obligations financing economic development project costs incurred under this Act, have been paid, all surplus funds then remaining in the special tax allocation fund shall be distributed by being paid by the municipal treasurer to the county collector, who shall immediately thereafter pay those funds to the taxing districts having taxable property in the economic development project area in the same manner and proportion as the most recent distribution by the county collector to those taxing districts of real property taxes from real property in the economic development project area.
Upon the payment of all economic development project costs, retirement of obligations and the distribution of any excess monies pursuant to this Section the municipality shall adopt an ordinance dissolving the special tax allocation fund for the economic development project area, terminating the economic development project area, and terminating the use of tax increment allocation financing for the economic development project area. Thereafter the rates of the taxing districts shall be extended and taxes levied, collected and distributed in the manner applicable in the absence of the adoption of tax increment allocation financing.
Nothing in this Section shall be construed as relieving property in economic development project areas from being assessed as provided in the Property Tax Code, or as relieving owners of that property from paying a uniform rate of taxes, as required by Section 4 of Article IX of the Illinois Constitution.
20 ILCS 620/7