
Nearly $2 billion in property taxes shifted onto homeowners from businesses over just three years, with a disproportionate share of the added burden falling on lower-income Black and Latino homeowners, a first-of-its-kind analysis by the Treasurer’s Office found. The shift largely resulted from the wide-ranging success of businesses appealing property valuations, called assessments, that determine their tax bills. From 2021 to 2023, which covers a complete three-year assessment cycle, business appeals shaved nearly $3.3 billion off the total amount billed to businesses across the county. More than $1.9 billion of that shifted onto homeowners.
Although previous studies have documented how assessment appeals shift tax burdens, the Treasurer’s Office study is the first to determine the resulting changes to the amounts billed to property owners. That analysis revealed that the percentage increases in tax amounts billed to homeowners were far greater in areas with lower-income minority populations. “This study helps explain why many homeowners have experienced sticker shock when opening their property tax bills in recent years,” Treasurer Maria Pappas said. “We hope our findings help guide policy makers in their ongoing efforts to make the appeals system more equitable.”
Key Findings:
• Businesses vs. Homeowners: Successful appeals by businesses caused their collective tax bills to drop by $3.3 billion, or 12.5%, while residential tax bills jumped by $1.9 billion, or 6.9%.
• Business owners appealed their assessments nearly 64% of the time, while homeowners appealed 27% of the time — with businesses winning far larger assessed value reductions.
• Business’ assessed value reductions surged to a total of $25.5 billion from 2021 to 2023 compared to $9.9 billion from 2015 to 2017. The difference is due mostly to larger reductions granted by the Board of Review. While business reductions rose, assessed value reductions for homeowners declined to $2.8 billion from $3.2 billion from 2021 to 2023.

If you’ve ever voted, you’ve probably seen one. It’s a referendum, a ballot measure that can affect your property taxes. Simply put, referendums are direct votes where the electorate has the chance to weigh in on a particular issue such as a proposed law, a tax increase, a bond issuance or some other major political or social decision. There are two types of referendums — binding and advisory. The government is legally required to act on binding referendum results. Advisory referendums aren’t legally binding and are often used to measure public opinion before making a governmental decision. 
Last summer, residents of Cook County’s south and west suburbs got a shock when they received their property tax bills. The typical homeowner saw their tax bill go up by 20%, while many experienced spikes far higher than that. Meanwhile, taxes went down for the average commercial property. This problem is not isolated to one area of Cook County. While some towns and villages have experienced larger tax increases than others, residents in every part of the county, from the northwest suburbs to the far reaches of the Southland, have seen unsustainable bill spikes. 

