How is Idaho property tax calculated?

Idaho property tax equals your taxable value times your total consolidated levy rate. Taxable value is the county-assessed market value minus any exemptions, the largest of which is the homeowner's exemption. Each taxing district (county, city, school, fire, etc.) sets its own levy, and they are summed into one consolidated rate applied to your property.

What is Idaho's homeowner's exemption?

Idaho's homeowner's exemption removes 50% of the value of your primary residence and up to one acre of land from taxation, capped at $125,000 in 2024. So a $400,000 home would have $125,000 exempted (since 50% is $200,000 but the cap is $125,000), leaving $275,000 of taxable value. It applies only to owner-occupied primary homes.

What is a typical property tax rate in Idaho?

Idaho's statewide effective property tax rate is roughly 0.5%–0.7% of market value, one of the lower rates in the United States. Actual consolidated levy rates vary widely by county and taxing district, commonly between 0.6% and 1.3% of taxable value. Always confirm your exact rate on your assessment notice or with the county assessor.

Are there other Idaho property tax breaks?

Yes. Idaho offers a property tax reduction (circuit breaker) program for low-income seniors, widows, widowers, and people with disabilities, plus a property tax deferral program. These can reduce or postpone the bill beyond the homeowner's exemption. This estimator models only the standard homeowner's exemption.

Is this estimate exact?

No. It is a close approximation based on the homeowner's exemption and the levy rate you enter. Your actual bill depends on the precise assessed value, all applicable district levies, voter-approved bonds, and any additional exemptions or credits. Use your county assessor's figures for an exact number.

Idaho Property Tax Estimator — Homeowner's Exemption

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How Idaho property tax works

Idaho property tax is a local tax. Your county assessor sets the market value of your home each year, you subtract any exemptions to get a taxable value, and that taxable value is multiplied by a consolidated levy rate — the sum of the rates set by every taxing district that overlaps your property (county, city, school, highway, fire, library, and so on). Idaho’s effective rates are among the lowest in the nation, typically well under 1% of market value after the homeowner’s exemption.

How it works

The estimator applies two steps:

exemption       = min(market value x 50%, $125,000)   (primary home only)
taxable value   = market value - exemption
annual tax      = taxable value x consolidated levy rate

For a non-primary or investment property the homeowner’s exemption does not apply, so the taxable value equals the full market value. The levy rate you enter (or pick from a county preset) is applied directly to the taxable value.

Example and notes

A $400,000 primary residence in a county with a 0.9% consolidated levy:

exemption     = min($200,000, $125,000) = $125,000
taxable value = $400,000 - $125,000     = $275,000
annual tax    = $275,000 x 0.009        = $2,475

Note: Idaho’s homeowner’s exemption cap is $125,000 and the exemption covers 50% of value plus up to one acre. Consolidated levy rates change every year as district budgets and bonds change. This tool is an estimate — confirm assessed value and levy rate with your county assessor for filing or budgeting.