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Cook County Mails 1.8 Million Delayed Property Tax Bills With Dec. 15 Deadline

County officials attribute the delay to a complex technology overhaul.

Overview

  • Interest will not accrue until after the new due date, and bills are payable 30 days from mailing.
  • Cook County launched a zero‑interest Bridge Loan Program to help local taxing districts manage cash flow during the delay.
  • Illinois revoked Tyler Technologies’ state business license on Sept. 12 over a missed annual filing, and the company says it is working to reinstate it.
  • Records reviewed by reporters show Tyler holds nearly $87 million in county contracts tied to the property tax and mass appraisal system overhaul.
  • Tyler says integrating three agencies and converting two decades of data contributed to the extended timeline, raising concerns about a compressed payment schedule for homeowners.