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.

A Chicago homeowner’s fight for property tax relief reveals shortcomings with Cook County’s assessments and appeals process