Cook County Property Tax Filing Guide
County:Cook
Filing Fee:$0
Status:Online Filing Available
Next Deadline:
Notice of Value Released Varies by township; mailed when assessments are released
3 Steps to File Your Protest
Follow this proven process to successfully challenge your Cook County property assessment
1
Gather Your Evidence
Collect comprehensive documentation that proves your property is overassessed compared to similar properties in your area.
2
File Your Petition Online
Submit your Appeal Form petition through the Cook County portal to officially start your appeal process.
3
Attend Your Hearing
Present your case professionally to the Cook County Assessor's Office (first level), Cook County Board of Review (second level) at your scheduled hearing date and time (hearings begin in your county in July).
Complete Filing Guide
Follow these detailed steps to successfully file your property tax protest with Cook County. Each step includes specific requirements and deadlines you must meet.
50,000+ homeowners trust us nationwide
"I saved $1,200 on my house! Took 15 minutes."Sarah, Dallas
"County lowered my value 13%. Filing was painless."John, Los Angeles