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:

Continue reading →