Collinsville Property Tax Quick Facts
- Location
- Collinsville, Illinois
- Madison County
- Assessed By
- Madison County Supervisor of Assessments
- Appeal Deadline
- 30 days from publication
- County Tax Rate
- ~2.4%
- Shared with Collinsville
How to Appeal Property Taxes in Collinsville
Check your assessment
Enter your Collinsville address for a free 60-second check. We compare your assessed value against comparable sales and neighborhood data.
Get your evidence packet
If over-assessed, pay $45 for a complete appeal packet with comparable sales, equity analysis, and pre-filled forms for Madison County.
File your appeal
Submit your appeal to Madison County Supervisor of Assessments before 30 days from publication. Our filing guide walks you through every step.
About the Collinsville Property Market
Collinsville is a city located in Madison County, Illinois. Every property inside the Collinsville city limits is assessed by Madison County Supervisor of Assessments, which applies Illinois property tax rules uniformly across the county.
Because Collinsville property values are set at the county level, the $160,000 county median home value and 2.4% effective tax rate apply to homes throughout the city. Homeowners who believe their Collinsville home is over-assessed have the right to file a appeal directly with Madison County Supervisor of Assessments before the 30 days from publication deadline.
Illinois allows the assessor to defend or adjust the assessed value during a appeal, so Collinsville homeowners should build a strong evidence-based case before filing — which is exactly what ProtestMax generates for $45.
Collinsville Property Market Context
As a city in Illinois, Collinsville inherits the state's assessment framework — which shapes how over-valuations occur and how homeowners can fight them.
Illinois market character
Illinois has the second-highest effective property tax rate in the country at around 2.1%, and Cook County uses a triennial reassessment cycle with notoriously inconsistent mass appraisals. Chicago-area homeowners often have the strongest protest case of any state.
How Illinois handles appeals
Illinois has multiple appeal levels: Cook County Assessor, Cook County Board of Review, Illinois Property Tax Appeal Board (PTAB), and Circuit Court. There is no risk of an increase from filing, and the multi-step process gives homeowners multiple chances to win.
When to file in Collinsville
Cook County appeal windows rotate by township, each open for roughly 30 days after notice mailing. The Board of Review opens separately. Outside Cook, most counties require appeals 30 days after notice.
Common Collinsville Property Types
Collinsville homeowners typically file protests across these property categories:
Single-family homes
The most common residential type and the dominant protest category.
Condominiums
Common in denser parts of the city and near employment centers.
Townhouses
Attached-home neighborhoods in newer subdivisions.
Small multi-family
Duplexes and 2-4 unit buildings assessed as income property.
Commercial
Retail, office, and small commercial along major corridors.
ProtestMax supports all of the above property types in Collinsville. Each appealpacket is tailored to the property's classification and uses comparable sales from Collinsville and surrounding Madison County neighborhoods.
Collinsville Property Tax Appeal Questions
How do I appeal my property tax in Collinsville, Illinois?
What is the property tax rate in Collinsville?
When is the appeal deadline for Collinsville property taxes?
How much can I save on property taxes in Collinsville?
Can my Collinsville property tax increase from filing a appeal?
Nearby Cities in Madison County
These Illinois cities share the same appeal deadline (30 days from publication) and are assessed by Madison County Supervisor of Assessments.