Tax Information

TAX REDEMPTION - the Clerk also collects all delinquent (past due) sold taxes from the annual tax sale and issues tax deeds. The tax redemption area of our office computes and collects payments for past due or unpaid taxes. Please call our TAX LINE at (815) 319-4253 or email This email address is being protected from spambots. You need JavaScript enabled to view it. for questions or more information. Payment for sold taxes require CERTIFIED FUNDS - cash, money order or bank cashier's check payable to Winnebago County Clerk.  NOTE:  payment by certified check must be the exact redemption amount - we will not issue a refund for a payment over the amount due.  If there is a pending Take Notice Fee, please bring that amount with you in cash if paying in person.  If sending payment by mail, please send an additional certified check for any pending Take Notice Fee.  Please call our office to obtain the current amount due.

Tax Sale Redemption Periods

A Guide to Delinquent Taxes

Delinquent Tax Info

TAX EXTENSION - the Tax Extension division of our office provides tax services including annually calculating the rate for various taxing districts by working with taxing authorities and the Board of Review. We make sure that the rates used in calculating taxes are within the legal limits established by law or the vote of the people.  Scroll down below to view tax extension records.

SALES TAX INFORMATION - website link: llinois Department of Revenue  (scroll down to "Searches" and click on "Tax Rate Finder")

2025 TAX EXTENSION information (scroll down below to view list of reports)

2025 CPI 2.9% (for taxes payable and collected in 2026):  2025 CPI & History

2026 CPI 2.7% (for taxes payable and collected in 2027):  2026 CPI & History (NEW)

The 2025 Tax Extension was completed on March 30, 2026.  Confirmation of the Final Multiplier from the IL Department of Revenue (which was 1.0000) was received on 3/18/26.  Certified Tax Computation Reports were mailed out to all taxing districts on April 2nd.  Please see additional tax reports posted below.  Thank you.

By Illinois State Statute, the levy filing deadline is always "the last Tuesday in December".  For 2025, this year's levy filing due date will be Tuesday, 12/30/25.  Please note that the County will be closed on December 24th & 25th.  Please plan accordingly to file the Levy and Truth in Taxation Certificate of Compliance.  Thank you.

Levy confirmation letters were mailed to all taxing districts on Friday, January 9th.  Please review, sign, date and return by FEBRUARY 16, 2026.  Thank you.

Updated EAV reports for all taxing districts will be posted below every week - up until the time of the 2025 tax extension (mid-March 2026).

The 2025 Revenue Recapture Report (for PTELL districts) will be posted below on Monday, November 17th.  This credit adjustment amount should NOT be included in your tax levy request.