Idaho Property Tax Appeals: What Property Owners Should Know in 2026
Idaho property owners who disagree with the assessed value of their property have a formal process for requesting a review. Because property assessments can affect annual property taxes, understanding the appeal process and its deadlines is important.
According to the Idaho State Tax Commission, property is generally assessed at 100% of market value, less applicable exemptions. Property owners who have questions about their valuation should first contact their county assessor’s office.
How the Appeal Process Works
If you believe your property’s assessed value is incorrect, the Idaho State Tax Commission recommends taking these steps:
- Contact your county assessor’s office and discuss the valuation with the appraiser.
- If the issue isn’t resolved, file an appeal with your county Board of Equalization through the county clerk.
- For most assessments, the deadline to file is the fourth Monday in June.
- If you disagree with the Board of Equalization’s decision, you may have 30 days to appeal to the State Board of Tax Appeals or district court.
What Property Owners Can Do
If you’re considering an appeal, it’s helpful to:
- Review your assessment notice as soon as you receive it.
- Check the property’s information for accuracy, including size, location, condition, and other characteristics that may affect value.
- Gather supporting information, such as recent comparable sales or documentation about the property’s condition.
- Contact your county assessor if you believe the assessed value doesn’t reflect the property’s current market value.
- Watch the applicable filing deadline so you don’t lose your opportunity to appeal.
The Tax Commission notes that county assessors use sales information and property characteristics to help determine market value.
Know Your Local Deadline
Property-tax procedures can vary depending on the type of property and the circumstances of the assessment. Subsequent-roll assessments, for example, have different deadlines under Idaho’s assessment calendar.
For that reason, property owners should confirm the applicable deadline and filing requirements with their county assessor or county clerk.
Reliable Resources
- Idaho State Tax Commission — property-tax information and appeal guidance
- Your County Assessor’s Office — property valuation questions and assessment records
- Your County Clerk — Board of Equalization appeal information
Property-tax laws and deadlines can change and may vary depending on the type of assessment. Property owners should confirm current requirements with their county assessor or the Idaho State Tax Commission before filing an appeal.