Synopsis As Introduced Amends the Property Tax Code. Provides that there shall be printed on each tax bill, or on a separate slip mailed with a tax bill, each taxing district affected by revenues received by a tax increment financing district. Amends the Tax Increment Allocation Redevelopment Act of the Illinois Municipal Code. Revises the definition of "blighted area": (1) to require that a reasonable person would conclude that each factor of a blighted area is present to a meaningful extent so that a municipality may reasonably find that the factor is clearly present, is reasonably distributed throughout the improved or vacant part of the redevelopment project area, and that public intervention is necessary to address the factor; and (2) to provide that a "blighted area" does not include any area within another redevelopment project area. Provides that a municipality must reevaluate whether a redevelopment project area designated as a blighted area is still a blighted area every 10th calendar year after the year in which the ordinance approving the redevelopment project area was adopted, redesignating the redevelopment project area as a blighted area if it meets the requirements or discontinuing the redevelopment project area if it does not meet the requirements. Limits where municipalities may jointly undertake plans or utilize revenues in contiguous redevelopment projects areas.