Tax Information

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 or email 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 - a refund will not be issued for a payment over the total 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.

PHONE: 815-319-4253

EMAIL: This email address is being protected from spambots. You need JavaScript enabled to view it.

MAILING ADDRESS: WINNEBAGO COUNTY CLERK - 404 ELM ST / RM 101 - ROCKFORD IL 61101

PAYMENT OPTIONS (Certified Funds):

Cash
Money Order: exact amount - payable to County Clerk
Cashier's Check: exact amount - payable to County Clerk

ADDITIONAL 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 archived tax extension records.

PLEASE CLICK HERE FOR THE ILLINOIS DEPARTMENT OF REVENUE - SALES TAX INFORMATION

Scroll down to "Searches" section
Select "Tax Rate Finder"

2026 TAX EXTENSION

By Illinois State Statute, the levy filing deadline is always "the last Tuesday in December". For the 2026 tax year, the levy filing due date will be Tuesday, 12/29/26. 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.

2026 Levy due date: Tuesday, 12/29/26
2026 CPI: 2.7% (taxes payable and collected in 2027): 2026 CPI & History
2026 Estimated EAV Reports will be available by the end of July and updated reports will be generated each week up until the 2026 tax extension (mid-March 2027). Available upon request.
2026 Revenue Recapture Report (PTELL districts) will be certified by the Treasurer and emailed to taxing districts mid-November, 2026. This credit adjustment amount should NOT be included in your tax levy.

2025 TAX EXTENSION

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.