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.


The Will County Supervisor of Assessments Office is open to the public.

Please note that all visitors must wear a mask and have their temperature taken before being allowed in the building to conduct business. Each visitor will also be required to sign in at the main entrance.

During this uncertain time, safety continues to be our priority. While the building may be open, please try to contact our office in these ways first:

  • Call our office's main line at (815) 740-4648. Please be aware that we may be dealing with a high volume of calls. Feel free to try calling again if you are not able to connect with us on the first try.
  • Utilize our Contact Us page on our website where you can send our office a digital message.

Please continue to check this website for updates to our current office procedures as they may change. Be well and stay healthy.


2021 Annual Exemption Applications

The 2021 Annual Exemption Applications will be mailed out in the late spring or early summer of 2021.

If you have any questions, please call our office at (815) 740-4648. Thank you for your patience!


2020 Board of Review Information

The 2020 Board of Review final decision notices were published on Wednesday, January 20, 2021.

~ Click here to go to the 2020 BOR Final Decisions page. ~

If you are dissatisfied with the final decision, you have through Friday, February 19th, 2021 (30 days from the date of the notice) to file an appeal with the Illinois Property Tax Appeal Board. You may click this link to begin the appeal process: http://www.ptab.illinois.gov/Filing.html.




Please call the Will County Treasurer!

Phone: (815) 740-4675

Website: www.willcountytreasurer.com


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 2020 are for the assessment year of 2020, payable in 2021. 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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