News · Oct. 14, 2026
Cook County property tax appeal deadlines, fall 2026: what veteran homeowners should do now
Short answer
The Cook County property tax appeal deadline depends on your township. As of the Assessor’s Oct. 13, 2026 calendar, Chicago’s Lake Township closes Oct. 29, Jefferson Nov. 12 and North Chicago Nov. 24; Hyde Park closed Oct. 8. Suburban windows close between Oct. 14 and Nov. 23. Veteran homeowners should file an appeal if their assessment looks high and, separately, confirm that their veterans exemption is on the bill, because an appeal does not add or replace an exemption.
City of Chicago townships
| Township | Notices mailed | Last day to file with the Assessor |
|---|---|---|
| Hyde Park | Aug. 26 | Oct. 8 (closed) |
| Lake | Sept. 16 | Oct. 29, 2026 |
| Jefferson | Sept. 29 | Nov. 12, 2026 |
| North Chicago | Oct. 9 | Nov. 24, 2026 |
| South Chicago | Not yet posted | Not yet posted |
| Rogers Park, Lake View, West Chicago | Earlier in 2026 | Closed |
Suburban Cook townships still open
| Township | Last day to file with the Assessor |
|---|---|
| Leyden | Oct. 14, 2026 |
| Worth | Oct. 15, 2026 |
| Wheeling | Oct. 22, 2026 |
| Proviso | Oct. 27, 2026 |
| Palatine | Nov. 4, 2026 |
| Orland | Nov. 6, 2026 |
| Schaumburg | Nov. 19, 2026 |
| Thornton | Nov. 23, 2026 |
From the Cook County Assessor’s Assessment & Appeal Calendar, updated Oct. 13, 2026. Dates can change; check the calendar before you file.
How to file
- Find your township on your reassessment notice or the Assessor’s property search.
- Gather evidence: a recent closing statement if you just bought, sales of similar homes, or proof that your property record is wrong, such as square footage.
- File online with the Assessor before your township’s deadline. You do not need a lawyer or appraiser.
- Miss it? You can usually still appeal to the Cook County Board of Review when it opens your township. It charges no fee.
Veterans: check your exemption separately
An appeal lowers your assessed value. It does not add a veterans exemption. If you have a service-connected disability rating, confirm on your bill that the Veterans with Disabilities exemption is applied: $2,500 off equalized assessed value at 30% to 49%, $5,000 at 50% to 69%, and up to $250,000 at 70% or higher. If it is missing, file with the Assessor and renew it each year. Illinois and Cook County veteran exemptions.
Bought recently with a VA loan? Your purchase price is strong evidence in an appeal, and the homeowner exemption ($10,000 off EAV in Cook) should be on your next bill. Suburban exemptions.
Common questions
When is the Cook County property tax appeal deadline in 2026?
It depends on your township. For Chicago, Lake Township closes Oct. 29, Jefferson Nov. 12 and North Chicago Nov. 24, 2026. Hyde Park closed Oct. 8. Check the Assessor’s calendar for your township.
Does a property tax appeal replace my veterans exemption?
No. An appeal lowers your assessed value. The veterans with disabilities exemption is a separate filing that you renew each year.
What if I missed the Assessor deadline?
You can usually still appeal to the Cook County Board of Review when it opens your township. There is no fee.
Sources
What will your VA funding fee be?
Enter a price and down payment to see the 2026 fee, or check whether you are exempt.
An independent guide. Not affiliated with or endorsed by the U.S. Department of Veterans Affairs, and not a lender. General information, not legal, tax or financial advice.