Peoria County, Illinois

How to appeal a Peoria County property tax assessment

Peoria County Board of Review published a 2026 filing deadline of September 30, 2026. HomeTaxChallenge verified that date on the Peoria County Board of Review site — the 2026 window is closed. Check with your assessor or the Board of Review for the next year's dates before filing.

Steps

1. Look up your Peoria County parcel to confirm the PIN, township and current assessment.
2. Confirm the 2026 filing deadline and complaint form directly with the Peoria 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 Peoria 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 Peoria County. This is informational and not legal, tax, or appraisal advice.