Winnebago County Logo

About Us

About Us:

Thomas R. Hodges, CIAO - Supervisor of Assessments

Our mission: Serve Taxpayers, Township Assessors and the Board of Review in a professional, helpful and friendly manner while ensuring the timely and accurate processing of assessments, exemptions and tax maps.

The Supervisor of Assessments Office is responsible for the publication and mailing of Assessment Change Notices on all taxable parcels. The Office also maintains all records for Homestead Exemptions. They assist taxpayers with the filing of property tax exemptions and any questions they may have in understanding the assessment process for their property.

The Supervisor of Assessments Office also assists Township Assessors in the performance of their duties, as well assisting the Board of Review in completing their responsibilities to maintain a timely tax cycle.

Also within the Supervisor of Assessments Office is the Mapping Department which is responsible for updating parcel identification numbers as well as the county tax map according to recorded documents.

Important Dates:


Assessments are based on the value of the property as of January 1st

Eligibility for homestead exemptions is dependent on occupancy as of January 1st

Rental/Owner Occupied Exemption applications become available for current tax year


Standard Homestead Exemption for Veterans with Disabilities and Homestead Exemption for Persons with Disabilities renewals are typically mailed


Senior Citizen Assessment Freeze Homestead Exemption renewals are typically mailed


Spring Township Assessor Meeting


Treasurer's Office mails tax bills


The first installment (1/2 of total bill) is due around June 1st or 30 days after tax bills were mailed

Board of Review convenes and votes on rules and procedures


Rental/Owner Occupied Exemption deadline is July 1st

Assessments notices are mailed

Assessment changes are published (Every four years all assessments are published)


Deadline for filing assessment complaints (30 days after assessments were published)


The second (final) installment of tax bills is usually due around September 1st

All evidence for Real Estate Assessment Complaints requesting an assessment reduction of less than $100,000 are due 25 days after the complaint filing deadline


Deadline for returning Senior Citizen Assessment Freeze applications is October 1st 

All evidence for Real Estate Assessment Complaints requesting an assessment reduction of $100,000 or more are due 45 days after the complaint filing deadline





Facebook Twitter