Tax Information

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.

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.

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

2025 TAX EXTENSION information:

2025 CPI (for taxes payable and collected in 2026) is posted below.

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.

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