Amends the Property Tax Code. Provides that a taxing district may approve a property tax relief abatement for a given levy year. Provides that the term "property tax relief abatement" means a reduction in the amount of taxes levied by a taxing district for a given levy year, certified to the county clerk of each county in which any portion of the taxing district is located and included in the aggregate extension. Provides that, for the purposes of the Property Tax Extension Limitation Law, the amount of the abatement shall be included in the taxing district's aggregate extension base for subsequent levy years.