Idaho Property Tax Appeal Guide | Property Tax Edge
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Idaho

Mountain · 44 counties

Complete property tax appeal guide for Idaho homeowners — rates, deadlines, exemptions, and step-by-step appeal instructions.

Idaho State Tax CommissionModerate to Appeal
0.50%
Effective Tax Rate
Rank #44 nationally
100%
Assessment Ratio
100% of market value
$418,600
Median Home Value
latest Census/ACS estimate
$2,038
Median Annual Tax
Per year
1

50% homeowner's exemption on up to $125,000 of value — significant savings

2

Rapid value appreciation in Boise metro has created many appeal opportunities

3

Circuit Breaker program provides relief for seniors on fixed incomes

Appeal Deadline

4th Monday in June — Monday June 22, 2026, by close of county business hours

File in writing on the county form by close of the county assessor office normal business hours (Idaho Code 63-501A). Property added to the subsequent roll — new construction or occupancy — has its own deadline of the fourth Monday in November, November 23, 2026. Appeal to the Board of Tax Appeals or district court within 30 days of the county board decision.

Verified August 2026 against the official source · official source · always confirm the current date with your county

Understanding Idaho's Assessment Ratio

100%
100% of market value

Idaho assesses at 100% of market value, so your assessed value should equal what your property is worth on the open market.

This makes appeals straightforward: if comparable homes in your area sold for less than your assessed value, you have grounds for an appeal.

How to Appeal Your Property Tax in Idaho

1

Receive assessment notice (by June 1)

2

Appeal to County Board of Equalization by 4th Monday in June

3

Attend Board hearing

4

Appeal to State Board of Tax Appeals (SBTA) within 30 days

5

Further appeal to District Court

Appeal Body
County Board of Equalization → State Board of Tax Appeals → District Court

Exemptions & Relief Programs

Homestead Exemption
50% of value up to $125,000 (Homeowner's Exemption)
Senior / Disabled Exemption
Property Tax Reduction (Circuit Breaker) for 65+ with income under $37,870

Key Statutes & Legal References

§
Idaho Code §63-205 (100% assessment)
§
Idaho Code §63-501A (homeowner's exemption)
§
Idaho Code §63-602G (circuit breaker)

Idaho Property Tax Code

Governing Code
Idaho Code — Title 63 (Revenue and Taxation)
Assessment Authority
County Assessor
Appeal Board
County Board of Equalization
Assessment Cycle
Annual

Key Statutes

I.C. §63-205
Assessment of Real Property
Requires county assessors to assess all taxable property at 100% of market value.
I.C. §63-501
Board of Equalization
Establishes county boards of equalization and their authority to hear appeals.
I.C. §63-602G
Homeowner's Exemption
Provides a 50% exemption (up to $125,000) on owner-occupied primary residences.
I.C. §63-705
Circuit Breaker
Property tax reduction for qualifying low-income seniors and disabled individuals.

Major Exemptions

Homeowner's Exemption
Owner-occupied primary residence
50% up to $125,000
Circuit Breaker
Age 65+, disabled, income limits
Up to $1,500 reduction
Official Code

Idaho Appeal Tools

Use these tools to build your appeal case for Idaho:

Over-Assessment Calculator
County Appeal Guides
Jurisdiction Intelligence
CAD Interactive Map
Sales Comparables Tool
Deadline Manager

Quick Idaho Calculator

$
$
Assessment ratio: 100% · Rate: 0.5%

Quick Links

Over-Assessment Calculator
Find a Consultant
Deadline Manager
Community Forum
Moderate to Appeal
Rapid home value appreciation in recent years has increased appeal activity

Taxing Authority

County Assessor
Assessment Frequency
Annual

Ready to Appeal Your Idaho Property Tax?

Use our free tools to calculate your potential savings, find a local consultant, and manage your appeal deadlines.

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Idaho's assessment ratio study

How closely Idaho assessors' values actually track real sale prices — and whether you can use that in an appeal.

Usable as supporting evidenceLatest study: 2024

Idaho Counties' Ratio Study (EPB00660)

Median ratio
93.32%
COD
8.99
PRD
1.02

Cite the county study — an improved-residential median well below 100% or a COD above 15 — to the county Board of Equalization and then the Board of Tax Appeals to bring your assessment to the county's prevailing level.

Official Idaho dataCompare all 50 states + DC

What's changing in Idaho

Enacted 2026 legislation and certified ballot measures. Reviewed August 2026 — always confirm with your county before relying on a change that hasn't taken effect yet.

EnactedHB 843Action may be needed

Homestead exemption no longer prorated by filing date

The homestead exemption (50% of value, capped at $125,000) is no longer reduced for filing part-way through the year. Owners who file after the second Monday in July receive a tax cancellation equal to the full exemption instead. You must give up any homestead exemption held on another property.

Effective: January 1, 2026tax.idaho.gov

Supplemental, Escape & Corrected Bills in Idaho

Idaho has no purchase-triggered supplemental bill, but new construction first occupied mid-year gets a prorated OCCUPANCY TAX bill (appealable within 28 days of the value notice). Property missed on the main roll is added via subsequent/missed property rolls with appeal rights at the county Board of Equalization's late-year sessions.

Occupancy tax on newly constructed structures (functional supplemental)

A newly constructed residential, commercial, or industrial structure (or new manufactured housing) is first OCCUPIED partway through the calendar year. An occupancy tax is levied on the improvement value, prorated for the portion of the year occupied — Idaho's closest analog to a supplemental bill.

Appeal window: Owner is notified of the appraised value and may appeal within 28 days of the notification.28 days

Subsequent and missed property rolls

Property completed or discovered after the main roll closes: items found between the 4th Monday of June and 4th Monday of November go on the SUBSEQUENT property roll (valuation notice mailed by the 3rd Monday of November); property discovered between the 4th Monday of November and Dec 31 goes on the MISSED property roll.

Appeal window: Appeals go to the county Board of Equalization at its statutory sessions for the subsequent/missed rolls (late November / early January meetings under Idaho Code §63-501); no single fixed day-count — the valuation notice states the applicable BOE deadline.

Clerical error corrections / cancellations

County commissioners (as BOE) may cancel or correct erroneous assessments and clerical errors; homeowners can also request correction of factual errors (square footage, characteristics) from the assessor.

Appeal window: Handled administratively; value disputes follow the regular 4th-Monday-of-June BOE deadline.

Full details & sources →Got one of these bills? Track its deadline →
AI Evidence Packet · $49

Build your Idaho appeal evidence packet

Our AI assembles a professional evidence packet — cover letter, comparable-sales analysis, assessment ratio check, hearing script, and your state's filing instructions. $49 one-time, no subscription, no percentage of your savings. You file it with your county; we don't file or represent you.

We prepare the evidence — you submit it. The $49 is charged when the packet is generated, not when an appeal succeeds. See a sample packet.

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Idaho property tax appeals — frequently asked questions

When is the property tax appeal deadline in Idaho?+

In Idaho, the appeal window is 4th Monday in June — Monday June 22, 2026, by close of county business hours. File in writing on the county form by close of the county assessor office normal business hours (Idaho Code 63-501A). Property added to the subsequent roll — new construction or occupancy — has its own deadline of the fourth Monday in November, November 23, 2026. Appeal to the Board of Tax Appeals or district court within 30 days of the county board decision. Always confirm the exact date with your local county assessor or appeal board, as it can vary by county.

How do I appeal my property tax assessment in Idaho?+

The general process: 1) Receive assessment notice (by June 1); 2) Appeal to County Board of Equalization by 4th Monday in June; 3) Attend Board hearing; 4) Appeal to State Board of Tax Appeals (SBTA) within 30 days; 5) Further appeal to District Court. Appeals are heard by the County Board of Equalization → State Board of Tax Appeals → District Court.

What is the average property tax rate in Idaho?+

Idaho's effective property tax rate is about 0.5% of value — roughly $2,038 per year on the state's median home value of $418,600. Assessments are made at 100% of market value.

What exemptions can lower my property tax in Idaho?+

Common relief includes the homestead exemption (50% of value up to $125,000 (Homeowner's Exemption)) and senior relief (Property Tax Reduction (Circuit Breaker) for 65+ with income under $37,870). Eligibility and amounts vary — check with Idaho State Tax Commission.

Is it worth appealing my property taxes in Idaho?+

If your assessed value is higher than what your home would realistically sell for, an appeal can lower your bill — often for the life of the assessment. Use the free over-assessment calculator to estimate your potential savings before you file.