SPRINGFIELD — The property tax system in Illinois will face a comprehensive review thanks to a measure championed by State Senator Robert Martwick.

“Through this legislation, we are going to be able to take the time to examine assessment practices, valuation methodologies and relief mechanisms that will help enhance accountability and reduce disparities,” said Martwick (D-Chicago). “By evaluating the property tax system, we can ensure future reforms prioritize homeowners, especially middle- and low-income households that disproportionately pay more.”

Martwick’s measure tasks the Department of Revenue and Department of Commerce and Economic Opportunity with conducting a comprehensive study evaluating the entire property tax system in the state.

Specifically, the study will examine:

• Property tax appeals processes at the state and local levels
• Issues with property tax collection that have resulted in delays
• Standardized assessment practices in other states
• The classification system used to assess Cook County property compared to other counties, including its impact on economic development and job creation
• The economic impact of preferential assessments or incentives
• The state’s reliance on property taxes and historical growth in tax levies

“The property tax system in Illinois impacts residents and business alike, making it imperative to conduct a thorough review to identify areas of improvement,” Martwick said. “Through this process, we can create a more sustainable framework that relieves the burden off of the middle class.”

Senate Bill 3455 was signed into law by the governor on Friday and goes into effect Jan. 1, 2025.