Henry County property tax appeal 2027: deadline, forms and how to file
To appeal a Henry County assessment, file with the Henry County Board of Review by mail or in person; in Illinois the deadline is 30 days after the township assessment list is published (Cook County uses township filing windows). Confirm the exact date on your notice or with the assessor; we add each county's 2027 date here when it is published.
Publication is generally in the fall, between mid-October and mid-November (county Appeal Deadline page; 2025 list was published Oct 24, 2025 with a Nov 24, 2025 deadline). The 2026 date had not been posted as of 2026-10-20.
Data as of 20 Oct 2026 · Henry County Board of ReviewCheck your own assessment
Free. We compare the value on your notice with recent sales of similar homes nearby and tell you whether an appeal is worth filing. Have your assessment notice and tax bill handy.
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How to file in Henry County
- Step 1
File the appeal
Use the method your notice lists, by the deadline on the notice.
- Step 2 · before the hearing
Prepare and submit your evidence
Overvaluation must be shown by a preponderance of the evidence; a uniformity (equity) claim needs clear and convincing evidence. The strongest evidence is a recent arm’s-length purchase of your home, or an appraisal as of January 1. Otherwise use at least three comparable sales, or for equity at least three similar nearby homes with their assessments and property record cards, in a grid. Bring a photo of your home and its property record card.
- Step 3
Meet, then hear
An informal review with Township assessor or Supervisor of Assessments comes first; if you decline the offer, the Henry County Board of Review hears the case. Most reductions happen at the first step.
Before you file: how to read your notice · evidence that works · informal vs formal hearing · when not to appeal
Forms
| Form | Number | Use | Format |
|---|---|---|---|
| Board of Review Non-Farm Appeal Form (Residential / Commercial / Independent) | — | Non-farm assessment complaint (posted version is for assessment year 2025) | |
| Comparison Grid | — | Must be included with appeals based on sales comparison or equity | |
| Board of Review Farm Appeal Form | — | Farm property assessment complaint | |
| Residential Appeal (Property Tax Appeal Board) | PTAB-1A | Only after the Board of Review decides: the state appeal, due 30 days after the board’s written notice. Can also be filed online through PTAB eFile. | Fillable PDF |
Appeal levels
| Level | Who hears it | Deadline | Cost |
|---|---|---|---|
| Informal review | Township assessor or Supervisor of Assessments | Before the Board of Review deadline | Free |
| Board of Review | Henry County Board of Review | 30 days after the assessment list is published | Free |
| Property Tax Appeal Board | Illinois Property Tax Appeal Board (state) | 30 days after the Board of Review’s written decision | No filing fee |
| Court | Circuit court (administrative review), or a tax objection in Henry County circuit court | 35 days after the PTAB decision; tax objections follow the tax-bill penalty date | Court costs |
What evidence the board accepts
Overvaluation must be shown by a preponderance of the evidence; a uniformity (equity) claim needs clear and convincing evidence. The strongest evidence is a recent arm’s-length purchase of your home, or an appraisal as of January 1. Otherwise use at least three comparable sales, or for equity at least three similar nearby homes with their assessments and property record cards, in a grid. Bring a photo of your home and its property record card.
Henry County questions
When is the Henry County appeal deadline for 2027?
No 2027 date is published yet. The board’s rule: Appeals must be filed on or before 30 days after the publication date. The Board accepts only official USPS postmarks, shipper tracking dates and hand deliveries stamped received; it does not accept appeal forms or case materials by fax or email, and late filings are not scheduled for hearings (2025 BOR rules).
How do I appeal my assessment in Henry County?
File the Board of Review Non-Farm Appeal Form (Residential / Commercial / Independent) with the Henry County Board of Review, 307 W Center St, Cambridge, IL 61238. Mailed complaints count as filed on the postmark date.
Should I talk to the assessor first?
Yes. The township assessor or the Henry County Supervisor of Assessments can fix record errors informally. Still file with the Henry County Board of Review by the deadline: a board complaint is required before any state appeal.
What evidence works best?
A recent arm’s-length purchase of your home or an appraisal as of January 1. Otherwise, at least three comparable sales, or three similar nearby homes with lower assessments, with property record cards and photos.
How do I contact the Henry County Supervisor of Assessments?
Mail: Henry County Board of Review, 307 W Center St, Cambridge, IL 61238. Phone: 309-937-3570. Hours and walk-in details: henrycty.com.
What if the Board of Review says no?
Appeal to the Illinois Property Tax Appeal Board within 30 days of the board’s written decision. There is no fee, and you can file online through PTAB eFile. A lowered value on an owner-occupied home carries over for the rest of the assessment period.
Check whether yours is over-assessed
Nearby counties
Rock Island County · Stark County · Knox County · Whiteside County · Bureau County · Mercer County · Warren County
- Henry County Board of Review
- Henry County Appeal Deadline page
- Henry County Board of Review Forms
- Henry County Board of Review Rules and Procedures (PDF, revised 05-23-2025)
- Henry County Non-Farm Appeal Form (PDF)
- 35 ILCS 200/16-55 — Board of Review complaints
- 35 ILCS 200/12-10 — Publication of assessments
- 35 ILCS 200/16-160 — Appeal to the Property Tax Appeal Board
- Illinois DOR — Assessment Appeals
- Property Tax Appeal Board — Filing your appeal
- Property Tax Appeal Board — FAQ
- U.S. Census Bureau, county population estimates (2024) and county gazetteer (2024).