Madison County, Illinois

How to appeal a Madison County property tax assessment

Madison County publishes a township assessment list in a local newspaper; appeals must be filed within 30 days of that publication date. HomeTaxChallenge verified the 2026 township publication table on the Chief County Assessment Office site — every township window closed by September 21, 2026 (Wood River). Check with your assessor or the Madison County Board of Review for the next year's dates before filing.

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 offers a free comparable-sales screening and savings estimate for Madison County on the parcel estimator. Confirm the complaint form and filing channels with the Board of Review before you file. 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.