Amends the Property Tax Extension Limitation Law in the Property Tax Code. Provides that a taxing district's aggregate extension base shall be adjusted whenever an assessment increase or decrease due to the issuance of a certificate of error, a decision of the board of review, or a decision of the Property Tax Appeal Board results in the overextension or underextension of taxes for the last preceding levy year. Effective immediately.

Statutes affected:
Introduced: 35 ILCS 200/18
Engrossed: 35 ILCS 200/18
Enrolled: 35 ILCS 200/18, 35 ILCS 200/21, 65 ILCS 95/4
Public Act: 35 ILCS 200/18, 35 ILCS 200/21, 65 ILCS 95/4