Elk Grove Township Assessor Connie Carosielli, who is a Deputy to the Cook County Assessor, says tax bills that are normally sent out at the end of June will be delayed until at least the end of July – and could be later. This means that second installment property tax bills will not be due until September 1 and possibly even later.
This year marks a major milestone for Cook County’s property tax system. For decades, the County relied on a mainframe system created in the 1980s to process and prepare tax bills. While the County has been gradually phasing out this dated system, 2025 is the first year all tax calculations will be completed using the new system. Assessor Caroselli says this final transition is the reason for processing delays, which have impacted the traditional schedule for send out and payment due dates.
“Although we’re experiencing some growing pains with the new system, I’m optimistic it will help to streamline future billing and improve overall efficiency for the benefit of our taxpayers,” Assessor Carosielli said.
Tax bills cannot be issued until Cook County’s two tax appeal agencies have finished processing all property tax appeals. In previous years, compatibility issues between systems also delayed that process – in those cases for months, which pushed property tax due dates to as late as December.
Assessor Caroselli and her staff at Elk Grove Township are available to assist residents with assessed value concerns, exemptions, and other property tax services.
For assistance with property tax bills, residents can stop by the Township Office (600 Landmeier Road in Elk Grove Village) or call 224-265-6110. To learn more about the Elk Grove Township Assessor’s Office and the services it provides for residents, visit https://elkgrovetownship.com/tax-advocacy/. For updates from the Cook County Assessor, visit https://www.cookcountyassessor.com/.
