Hancock County property tax appeal 2027: deadline, forms and how to file
To appeal a Hancock County assessment, file with the Hancock 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.
Each county publishes its assessment list or changes in a local newspaper, township by township, on or before December 31 (35 ILCS 200/12-10). Dates vary by county.
Data as of 20 Oct 2026 · Hancock 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 Hancock 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 Hancock 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 |
|---|---|---|---|
| Assessment Appeal - Hancock County Board of Review (2025 form) | — | Board of Review complaint form with comparable-sales and equity grids (2025 version; Word file) | |
| Hancock County Board of Review Rules for 2025 Appeals | — | Board of Review filing rules (Word file) | |
| 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 | Hancock 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 Hancock 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.
Hancock County questions
When is the Hancock County appeal deadline for 2027?
No 2027 date is published yet. The board’s rule: All appeal forms must be filed at the Supervisor of Assessments office no later than 30 days after the township's assessments are published. Mailings are filed on the USPS postmark date and the owner is responsible for making sure the mailing is postmarked. A separate form is needed for each parcel and the filer must have legal interest in the property (recorded deed, memorandum of installment contract, or contract for deed on file in Hancock County land records). The owner has 10 days from the postmark of the Board's tentative decision to request a hearing.
How do I appeal my assessment in Hancock County?
File the Assessment Appeal - Hancock County Board of Review (2025 form) with the Hancock County Board of Review, c/o Supervisor of Assessments Office, P.O. Box 444, Carthage, IL 62321. Mailed complaints count as filed on the postmark date.
Should I talk to the assessor first?
Yes. The township assessor or the Hancock County Supervisor of Assessments can fix record errors informally. Still file with the Hancock 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 Hancock County Supervisor of Assessments?
Mail: Hancock County Board of Review, c/o Supervisor of Assessments Office, P.O. Box 444, Carthage, IL 62321. Phone: 217-357-2615. Hours and walk-in details: hancockcounty-il.gov.
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
McDonough County · Adams County · Henderson County · Schuyler County · Brown County · Warren County · Fulton County
- Hancock County - Supervisor of Assessments
- Hancock County - Supervisor of Assessments FAQ
- Hancock County - Documents and Forms
- Hancock County - 2025 Board of Review Rules
- Hancock County - 2025 Board of Review Appeal Form
- 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).