Welcome to the Kane County Treasurer Website!
Real Estate Tax Bill Due Dates
1st installment was due: June 1, 2026
Any payment made between September 2, 2026 and October 1, 2026 must include a 6% penalty
(see payment coupon)
2nd installment was due: September 1 , 2026
Any payment made between September 2, 2026 and October 1, 2026 must include a 1.5% penalty
(see payment coupon)
Mobile Home Tax Bill Due Date
Tax bill was due: May 1, 2026
Any payment made between September 2, 2026 and October 1, 2026 must have an additional $100.00 late fee added to the amount owed.
USPS Postmark Change
The U.S. Postal Service is implementing postmark changes effective December 24, 2025.
Under the new rule, a postmark will reflect the date an envelope is processed by an automated USPS sorting machine rather than when dropped off in a mailbox or at a post office counter. This new process will reflect a 1-2 day delay for postmarks.
Critical for deadlines, it is recommended to go to a USPS counter and request a manual postmark.
For more information contact your local post office or visit them online at
www.usps.com.
Want to receive your tax bill paperless? Sign-Up is easy. Simply find your unique authorization code located on the top right corner of your paper tax bill. Go to
www.enoticesonline.com and create an account. Once set up, you'll receive future tax bills electronically instead of by mail.
How our Office Works for You
Electronic Notifications
Are you looking for a way to get reminders from the Treasurer's Office? Would you like to know when the tax bills will be mailed or maybe what the due dates are? It's easy,
just sign up by selecting the E-Notifications link.
