Assessor
Madison County Supervisor of Assessments
Appeal Deadline
30 days from publication
Required Form
BOR Complaint
Risk of Increase
Rare but possible
Median Home Value
$160,000
Effective Tax Rate
2.4%
Estimated Annual Savings
$576
Based on 15% reduction
Madison County Supervisor of Assessments Portal
Access your property records, assessment details, and file appeals directly through the official Madison County website.
Visit https://www.co.madison.il.us/departments/supervisor_of_assessmentsTips for Madison County Appeals
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Metro East St. Louis area
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File complaint with the Board of Review
Step-by-Step
How to Appeal in Madison County
Review your property assessment notice from Madison County Supervisor of Assessments. Verify the property details — square footage, bedroom count, lot size, and condition.
Research comparable sales in your area. Look for recent sales of similar properties that sold for less than your assessed value.
File your appeal by the 30 days from publication deadline. You can file online at https://www.co.madison.il.us/departments/supervisor_of_assessments, by mail, or in person.
Prepare your evidence packet. Include comparable sales data, property condition photos, and any repair estimates that affect value.
Attend your appeal hearing. Present your evidence clearly and focus on comparable sales that support a lower value.
Receive your decision. If the appeal is unsuccessful, check your options for further appeal.
FAQ
Madison County Property Tax Questions
How do I appeal my property tax in Madison County, Illinois?
File a appeal with Madison County Supervisor of Assessments by the 30 days from publication deadline. You can file online at https://www.co.madison.il.us/departments/supervisor_of_assessments, by mail, or in person. ProtestMax generates your complete appeal packet for $45 flat.
What is the property tax rate in Madison County?
The average effective property tax rate in Madison County is approximately 2.4%. The median home value is $160,000, resulting in an average annual tax bill of approximately $3,840.
What is the appeal deadline for Madison County?
The appeal deadline for Madison County is 30 days from publication. Make sure to file before this deadline to preserve your right to appeal.
How much can I save by appealing my Madison County property tax?
A successful appeal in Madison County typically reduces the assessed value by 10-20%. On the median home value of $160,000, a 15% reduction saves approximately $576 per year.
Can my property tax increase if I appeal?
In Illinois, there is a theoretical risk that your assessed value could increase as a result of a appeal. However, this is rare in practice, and most appeals result in a reduction or no change.