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Codes and Rules

Important Dates

January 1 ASSESSMENT LIEN DATE:  Effective  valuation date used to determine market value for property tax purposes (63-205, Idaho Code)
1st Monday of January DEADLINE: Missed Property Assessment Notices mailed (63-308, Idaho Code)
4th Monday of January January Commissioners’ Meeting:  County Board of Equalization meets to hear appeals and to equalized Missed Property Roll Assessments from the prior calendar year (63-501, Idaho Code)
March 15 DEADLINE: Business Personal Property Declarations Submitted to the Assessor’s Office  (63-302, Idaho Code)
April 15 DEADLINE: Exemption Applications must be submitted* (63-602, Idaho Code)
April 15** DEADLINE: Property Tax Reduction (63-706, Idaho Code)
May 15 Taxpayer/Assessor must be notified of Exemption Approval by County Commissioners for all exemption that require application (63-602, Idaho Code)
1st Monday of June DEADLINE: Property Roll Assessment Notices mailed (63-308, Idaho Code)
4th Monday of June DEADLINE: for filing Appeals of Values on Primary Property Roll (63-501A, Idaho Code)
4th Monday of June County Board of Equalization begins to hear assessment and exemption appeal for the Primary Property Roll (63-501, Idaho Code)
2nd Monday of July County Board of Equalization ends (63-501, Idaho Code)
2nd Monday of July Homeowner’s Property Tax Relief Roll Status Date:  All properties qualifying for the Homestead Exemption must be reported on the Homeowner’s Property Tax relief roll (63-724, Idaho Code)
4th Week of August DEADLINE:  Homeowner’s Property Tax Relief Roll:  Assessor must transmit the Homeowner’s Property Tax Relief Roll to the County Auditor (63-724, Idaho Code)
2nd Monday of September Ada County Commissioners Set Tax Levy and Submit to Idaho State Tax Commission for review and final approval (63-801, Idaho Code)
4th Monday of October State Tax Commission reviews and approves property tax levies (63-809, Idaho Code)
3rd Monday of November DEADLINE: Subsequent Roll Assessment Notices mailed (63-308, Idaho Code)
4th Monday of November DEADLINE:  Appeal of Subsequent Roll Assessments (63-501A, Idaho Code)
4th Monday of November County Board of Equalization for Subsequent Roll Assessments begins (63-501, Idaho Code)
1st Monday in December County Board of Equalization for Subsequent Roll Assessments ends (63-501, Idaho Code)
December 31 Homestead Exemption application deadline for current assessment year (63-602G, Idaho Code)

* Does not Include the Homestead Exemption Application

**Property Tax Reduction deadline may be extended to the next business day if this date falls on a weekend or holiday that is recognized by the internal revenue service.