Chicago had some of the worst disparities in the county, with businesses’ tax bills dropping nearly 20% while residential bills increased by more than 16% during the 2021 to 2023 reassessment cycle.

A study from the Cook County Treasurer's Office found nearly $2 billion in property taxes shifted from county businesses to the lowest income homeowners over just three years.

Cook County homeowners’ bills grew by a total of about 7% over the span of the report, and the increases fell more on lower-income Black and Latino taxpayers.