More than $180 billion in property taxes collected from every property in Cook County can now be analyzed with software code created by the Cook County Assessor’s Office.
The Property Tax Simulator, or PTAXSIM, is a software code package implemented in the coding language R and designed to recalculate changes to Cook County property tax bills. It uses real assessment, exemption, TIF and levy data to generate historic, line-by-line tax bills for any Cook County property from tax years 2006 to 2020 (for bills issued from 2007 through 2021). PTAXSIM allows the user to . . .