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Important dates if you own property
Learn about deadlines to file an assessment appeal, pay property tax, and more.
2025
Feb 15
Deadline to file all exemption claims
Mar 31
Last day to apply for Informal Review
Apr 1
Due date to file Form 571-L Business Personal Property Statement
Apr 10
Deadline to pay the 2nd installment of property tax bill to the Tax Collector's Office.
Jul 2
First day to file a formal assessment appeal with the Assessment Appeals Board
Aug 31
Deadline to pay business property and possessory interest tax bill to the Tax Collector's Office
Sep 15
Deadline to file a formal assessment appeal with the Assessment Appeals Board
Dec 10
Deadline to pay the 1st installment of the property tax bill to the Tax Collector's Office
2026
Feb 15
Deadline to file all exemption claims
Mar 31
Last day to apply for Informal Review
Apr 1
Due date to file Form 571-L Business Personal Property Statement
Apr 10
Deadline to pay the 2nd installment of property tax bill to the Tax Collector's Office.
Jul 2
First day to file a formal assessment appeal with the Assessment Appeals Board
Aug 31
Deadline to pay business property and possessory interest tax bill to the Tax Collector's Office
Sep 15
Deadline to file a formal assessment appeal with the Assessment Appeals Board
Dec 10
Deadline to pay the 1st installment of the property tax bill to the Tax Collector's Office
2027 to 2032
Feb 15
Deadline to file all exemption claims
Mar 31
Last day to apply for Informal Review
Apr 1
Due date to file Form 571-L Business Personal Property Statement
Apr 10
Deadline to pay the 2nd installment of property tax bill to the Tax Collector's Office.
Jul 2
First day to file a formal assessment appeal with the Assessment Appeals Board
Aug 31
Deadline to pay business property and possessory interest tax bill to the Tax Collector's Office
Sep 15
Deadline to file a formal assessment appeal with the Assessment Appeals Board
Dec 10
Deadline to pay the 1st installment of the property tax bill to the Tax Collector's Office