Your Cook County Assessment

Your tax bill starts with one number: the market value the Cook County Assessor gives your property. Homes are assessed at 10% of that value, and commercial property at 25%. The state equalization factor and your exemptions then turn it into the figure your tax rate is applied to. These guides explain how the Assessor sets the value, what your assessment notice says, how the three-year reassessment cycle works in your township, and how to tell whether your assessment is out of line with similar homes.

Want to know if your assessment is too high? Check your property free →