Important Dates

Dates to Remember

January 1 - Effective date of current assessment.

April 2 thru April 25 inclusive -
Property owner may request an informal review of their assessment by the assessor.

April 2 thru April 30 inclusive -
Protest of assessment period for filing with the local Board or Review.

May 1 thru Adjournment -
Board of Review meets each year.

October 9 thru 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's Equalization Orders (odd numbered years).

January 1 thru December 31 - Period for filing for Homestead Credit, Military Exemption and Business Property Tax Credit. One time filing is provided, by statute, unless the property owner is:

  1. Filing for Homestead Credit, Disabled Veteran's Homestead, Military Exemption or Business Property Tax Credit for the first time.
  2. Has purchased a new or used home and is occupying the property as a homestead as of July 1st.
  3. Owner was using as a homestead but did not previously file.
  4. Some change occurs that affects the requirements of the Business Property Tax Credit, then reapplication is required.

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

  • Wildlife Habitat 
  •  Recycling
  •  Wetlands
  •  Pollution Control
  •  Urban Revitalization
  •  Native Prairie
  •  Speculative Shell Building
  •  Natural Condervation or Wildlife Areas
  •  Mobile Home Park Shelter
  •  Methane Gas Conversion Property
  •  Low Rent Housing
  •  Indian Housing Authority
  •  Impoundment Structure
  •  Historic Property
  •  Geothermal & Cooling System
  •  Fruit Tree Reservation
  •  Forest Reservation
  •  Religious, Literary, & Charitable
  •  Barn & One-Room School


Click here to see a Property Assessment and Tax Flow Chart.

Things to Remember

Assessed Value and taxable value are not synonymous terms.
Property is assessed as of January first.
Property is reassessed every two years.

Taxes are levied on a value determined by the auditor by applying a "rollback" percentage to the assessed value and deducting any applicable exemptions or credits.

The rollback percentages vary each year.

Example: $50,000 
- assessed value (residential class)
x     .698754% 
- roll back percentage (example)
- roll back value (taxable)
-         4,850  
- Homestead Credit
- net taxable value
x         27.15
- levy (varies with taxing district)
- property tax

For values determined as of January first, taxes will be payable eighteen months following on July first.

The "rollback" is the percentage of actual value that is determined by the Director of Revenue each year on the several classes of property where the total value increase STATEWIDE, exceeds three percent for each class of property.  The percentage so determined by the Director of Revenue is certified to and applied by the local county auditor to all property in each class effected throughout the State.  Percentages determined by the Director of Revenue are the same for all the assessing jurisdictions in the State.

Increases in assessed value of individual parcels of property as determined by the assessor, may exceed three percent within a jurisdiction. Agricultural property, (except agricultural dwellings), are assessed on the basis of productivity and net earning capacity using a five year crop average and capitalized at a rate set by the Legislature. The rate is currently seven percent. Tentative and final equalization orders are issued by the Director of Revenue in odd numbered years on or about August 15th and October 1st respectively. The orders are sent to the various county auditors who apply them to the classes of property affected, if any.

Assessors and members of the Board of Review are appointed to their term of office. Assessors, in addition to completing the required 150 hours of Continuing Education, must be approved by a majority vote of the Conference Board in order to be reappointed.

If you desire further information, questions concerning property values or other information relating thereto should be addressed to the assessor's office in the respective jurisdiction and not the Board of Supervisors or Treasurer.

Questions relating to taxes should be addressed to the local county Treasurer.
Read about Property Values to Taxes.