County Clerk's Office - Joseph J. Tirio, McHenry County Clerk

Tax Extension

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The Office is currently open for in-person filing; Monday thru Friday from 8:00 am to 4:30 pm.

Tax Levies are due the last Tuesday in December of each year. This year the last Tuesday falls on December 31, 2024. The McHenry Clerk's Office will be closed on December 25, 2024. Please plan around this closure accordingly.

 

Staff will be available to answer questions and provide information from 8:00 AM to 4:30 PM Monday through Friday by calling 815-334-4242 or emailing TaxExtension@mchenrycountyil.gov.

**All taxing documents can now be turned in via email. We are still accepting submissions in person. However, if you wish to submit electronically email all submissions to TaxExtension@mchenrycountyil.gov**

 

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Contact Us

Tax Extension

TaxExtension@mchenrycountyil.gov

Physical Address
667 Ware Rd
Room 107
Woodstock, IL 60098

Mailing Address
McHenry County Clerk
2200 N Seminary Ave
Woodstock, IL 60098

Phone: 815-334-4242
Fax: 815-334-8727