35 ILCS 200/27-32
If, in any year other than the initial levy year, the estimated special service area tax levy is more than 105% of the amount extended for special service area purposes for the preceding levy year, notice shall be given and a hearing held on the reason for the increase. Notice of the hearing shall be given in accordance with the Open Meetings Act. A meeting open to the public and convened in a location convenient to property included within the boundaries of the special service area is considered a hearing for purposes of this Section. The hearing may be held prior to the adoption of the proposed ordinance to adopt the annual levy of the special service area, but not more than 30 days prior to the adoption of the ordinance, or at the same time the proposed ordinance to adopt the annual levy of the special service area is considered.
35 ILCS 200/27-32