Second Installment Cook County Property Tax Bills Likely to Be Delayed

May 19, 2025 2025 Triennial Reassessment

Due to technical issues at the Assessor’s Office (“AO”), the AO missed a deadline to get reports to the Illinois Department of Revenue in a timely fashion. These reports are part of the process of finalizing the assessments and the second installment tax bills. Second installment tax bills are typically mailed on or around July 1, with a payment due date of August 1. The Assessor’s Office estimates that the delay could cause property tax bills to be released at least one month late. Based on this information, we expect the tentative release date to be on or around August 1 with a payment due date of September 1. However, as the process is approximately three months behind schedule as compared to last year when the tax bills were released on time, it is possible that the delay could be longer.

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