Madison County, Illinois

How to appeal a Madison County property tax assessment

2026 Board of Review deadline: TBD. HomeTaxChallenge has not verified the Madison County 2026 Board of Review filing window; check with your assessor or the Madison County Board of Review for the current deadline before filing. Illinois appeals are filed with the county Board of Review; the next level is the Property Tax Appeal Board (PTAB).

Steps

1. Look up your Madison County parcel to confirm the PIN, township and current assessment.
2. Confirm the 2026 filing deadline and complaint form directly with the Madison County Board of Review.
3. Choose a basis: overvaluation (recent comparable sales) or equity (similar assessed values). Non-farm residential property in Illinois is generally assessed at one-third of fair cash value.
4. File the complaint and evidence with the Board of Review before the deadline. The next level is the Illinois Property Tax Appeal Board (PTAB).

HomeTaxChallenge does not offer a comparable-sales screening or savings estimate for Madison County yet. Questions: contact@hometaxchallenge.com.

Disclaimer: HomeTaxChallenge is not a government agency and is not affiliated with Madison County. This is informational and not legal, tax, or appraisal advice.