Welcome to the Will County Supervisor of Assessments Office!

We are your official source for property assessments and exemption information. Our knowledgeable staff takes pride in our ability to offer you the most accurate and up-to-date statutory guidelines with all of your assessment, exemption, appeal and any other property tax information and concerns.

Exemption Renewals

Exemption Renewal applications were mailed out on April 15th, 2022.

There are many ways you can submit your application!

You may attend an in-person Exemption Event offered throughout the county. Please click the following link to see when we will be in your area!

~ Click Here to view the 2022 Exemption Events ~


You can SKIP THE LINE! Our office highly recommends mailing all applications to:
Will County Supervisor of Assessments Office
302 N. Chicago Street
Joliet, IL 60432


Visit our office Monday through Friday, from 8:30 am to 4:30 pm.


Visit your local Township Assessor's Office during their regular business hours.

If you have any questions, please call the Will County Supervisor of Assessments Office at (815) 740-4648.



Questions regarding your Property Tax Bill?

Please contact the Will County Treasurer!

Website: www.willcountytreasurer.com

Phone: (815) 740-4675


The Will County Supervisor of Assessments Office governs every aspect of the assessment process, acting as a central resource for its county's residents. We believe that our primary responsibility is to the taxpayers, and we are committed to ensure that all county residents receive fair and equitable assessments. We are also dedicated to making sure that eligible taxpayers are receiving the beneficial exemptions they are entitled to; all with the utmost courteous and respectful service. The Supervisor of Assessments Office is also committed to promoting taxpayers education and involvement in the assessment process through open discussion forums, informational meetings, and community outreach endeavors. The valuations for 2021 are for the assessment year of 2021, payable in 2022. This means that the assessment you are looking at is for this year's upcoming tax bill. The tax rates for this year have not been established yet. The Supervisor of Assessments does not establish tax rates (tax rates are established by local taxing bodies). However, you can search our website for the most current assessments using our Property Search Portal, where you can conduct property searches by PIN, property address, and more.

For an explanation on tax rates, please visit the Will County Clerk's Office.

For any additional tax bill questions visit the Will County Treasurer's Office.

For additional Will County Departments, click here.

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