Cook County 2025 Property Tax Bills Delayed — Start Planning Your 2026 Appeal Now
Cook County property owners will receive their First Installment 2025 property tax bills later than usual.
- Mailing Date: March 2, 2026
- Due Date: April 1, 2026
This delay is due to the late issuance of the 2024 Second Installment bills.
While you’re preparing to pay your 2025 property taxes, now is the time to start preparing your Cook County property tax appeal for 2026.
2026 Reassessment: South District Property Owners Take Action
The Cook County Board of Review has closed its final 2025 appeal session. Appeal windows move quickly, and missing a deadline can cost you a year of potential savings.
If your property is located in the South District, 2026 is especially important. The following townships are up for reassessment:




The Cook County Board of Review has opened 2025 property tax appeals for the sixth group. The
There are only 11 townships left to open at the Board of Review for the 2025 Cook County tax appeal cycle. If your property is in Lake, North Chicago, Orland, Palatine, Rich, Schaumburg, South Chicago, or Thornton, you could be next—and you may be leaving thousands of dollars in potential savings on the table.
If you’re a homeowner, you’ve probably noticed your property taxes creeping up year after year. The good news? The Board has reopened several townships, giving homeowners a rare second opportunity to appeal their property tax assessments—even if you missed the original deadline.
We’ve received news that the Cook County Board of Review: will be reopening for certain Townships that previously closed. This decision is due to the delayed release of property owners’ second-installment tax bills.
The Cook County Board of Review has opened 2025 property tax appeals for the fifth group. The
The Cook County Board of Review has opened 2025 property tax appeals for the fourth group. The
The Cook County Board of Review has opened 2025 property tax appeals for the third group. The
The Cook County Board of Review has opened 2025 property tax appeals for the second group. The
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