Idaho Property Tax Calculator 2026

How Idaho Property Tax Works

Property tax in Idaho is an annual tax levied on real estate by local governments — primarily counties, municipalities, and school districts. The amount you owe is determined by your property's assessed value multiplied by the local mill rate. On average, Idaho homeowners pay 0.50% of their home's value in property tax each year, 0.44 percentage points below the U.S. figure of 0.94%.

The effective rate combines all local levies: county tax, municipal tax, school district tax, and any special assessments. Because Idaho has multiple taxing jurisdictions, your actual rate depends heavily on where in the state your property is located. The 0.50% figure is all real-estate tax paid on owner-occupied homes in Idaho divided by their total value, as published in the Tax Foundation's Property Taxes by State and County, 2026 from Census Bureau American Community Survey data for 2020–2024. It is a statewide average — not a rate any single jurisdiction charges, and not your bill.

The Census Bureau puts the median owner-occupied home in Idaho at $418,600 and the median real-estate tax bill at $2,038 a year — roughly $170 per month when paid through a mortgage escrow account (American Community Survey, 2020–2024).

Who Collects Property Tax in Idaho — and How Rates Are Set

In Idaho, property is valued and taxes are collected at the county level: a county assessor's office sets values and a treasurer or tax collector (titles vary) sends the bill. State law sets the framework; counties, municipalities, school districts and special districts each set their own levies within it.

Mill rates (expressed as dollars of tax per $1,000 of assessed value) are set annually based on local budget needs. Ten mills is 1% of assessed value, which equals 1% of market value only where homes are assessed at full market value. States differ on that — some tax full market value, others a fixed fraction of it — so your assessment notice is the place to check which applies to you. If your home's market value rises faster than neighboring properties, your share of the tax burden can increase even if the mill rate stays the same.

To find your exact rate, contact your county assessor's office or check its official website. Your most recent property tax bill will also show the breakdown of all levies applied to your parcel.

Idaho Property Tax Exemptions and Relief Programs

Idaho's homeowner's exemption removes 50% of the value of your primary home and up to one acre of land from property tax, up to a maximum of $125,000. The Property Tax Reduction program can cut the bill by a further $250 to $1,500 for income-qualified homeowners who are 65 or older, blind, widowed, disabled or in certain other categories; you must apply every year between January 1 and April 15. Both run through your county assessor. Source: Idaho State Tax Commission — Homeowner's Exemption.

Veterans may qualify for separate property-tax relief, which takes a different form in each state - an exemption, a credit or a refund - so ask your county assessor what Idaho offers. Agricultural land often receives a preferential assessment based on use-value rather than market value. If you believe your assessment is incorrect, you have the right to appeal — the deadline is printed on your assessment notice and is often only a few weeks away.

To apply for any exemption, contact your county assessor. Most exemptions require an annual or one-time application and proof of eligibility (residency, age, disability documentation, etc.).

Tips to Manage Your Idaho Property Tax Bill

First, verify your assessment is accurate. Review your property record card at your county assessor's office and check for errors in square footage, bedroom/bathroom count, or lot size. Even small errors can inflate your assessed value and tax bill. If the assessment seems high, look up recent sale prices of comparable homes in your neighborhood and file an appeal if warranted.

Second, apply for every exemption you qualify for. Homestead, senior, veteran, and disability exemptions can reduce your taxable value by thousands of dollars. Third, if your mortgage servicer handles tax payments through escrow, review your escrow statement annually. Servicers sometimes over-estimate and hold excess funds — you may be entitled to a refund. Finally, Idaho property taxes are due December 20. You can pay half by December 20 and the remainder by June 20.