Tax Factors

​Factors that can Affect Residential Property Tax Bill

• Your property’s assessed value, determined by the Cook County Assessor
• The “Equalizer,” an annual computation determined by the Illinois Dept. of Revenue
• Tax levies, annually levied by local taxing bodies
• Exemptions determined by the State Legislature

​Others who are an Important Part of the Tax Process

• The Cook County Assessor applies the “Equalizer.” The Township Assessor’s office also provides a detailed explanation of “How your property is Valued.”
• The Cook County Treasurer collects Property Taxes throughout Cook County.
• The Cook County Clerk calculates the Tax rates based on Tax Levies.

​If you have any questions about tax factors, or if you need help in the areas described above, the Assessor’s Office will be glad to assist you.