Important Dates

Important Dates to Remember

  • January 1 - Effective date of current assessment.
  • April 2 through April 25 inclusive - Property owner may request an informal review of their assessment by the assessor.
  • April 2 through April 30 inclusive - Protest of assessment period for filing with the local Board of Review. Board of Review Petition
  • May 1 through adjournment - Board of Review meets each year.
  • July 1 - Filing deadline for new Homestead Credit and Military Exemption applications. Owners must own and occupy their property on or before July of the year for which the credit is claimed.
  • October 9 through October 31 inclusive - Protest period for filing with Board of Review on those properties affected by changes in value as a result of the Director of Revenue and Finance Equalization Orders (odd numbered years).

Filing is required on the following, if provisions have been made for exemptions as required:


  • Fruit Tree Reservations
  • Impoundment Structures
  • Native Prairies
  • Open Prairies
  • Forest Cover
  • River and Stream Banks
  • Recreational Lake
  • Disabled Veterans' Homestead Credit


  • Family Farm Credit
  • Homestead Credit
  • Military Exemption
  • Forest Preserve
  • Pollution Control
  • Wildlife Habitat


  • Wetlands
  • Urban Revitalization
  • Industrial Partial 427B
  • Geothermal Property Tax Exemption