What are township equalization factors (sometimes called multipliers) - and how are they determined?

Equalization is the application of a uniform percentage increase or decrease to assessed values of various areas or classes of property to bring assessments on average, to the statutory level of assessment of 33 1/3%. Both local assessment officials and the Illinois (IL) Department of Revenue (DOR) are responsible for equalizing assessment levels. IL-DOR Publication 136 (PDF) gives a detailed overview of the property assessment and equalization process. Contact your Township Assessor or contact the County Assessment Office if you have any questions.

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1. Are there any exemptions that provide property tax relief?
2. I believe my assessment is too high. What should I do?
3. I would like more information about my property assessment or assessments in my neighborhood. Is this information available?
4. How do I change the mailing address on my tax bill?
5. I have received an assessment notice in the mail. What does this mean to me?
6. How can I get a duplicate copy of my tax bill?
7. What are township equalization factors (sometimes called multipliers) - and how are they determined?