Idaho's Homeowner's Exemption Is a Flat $125,000
Program and regulatory figures verified September 25, 2026. Details change; confirm your scenario with us.
Idaho's exemption is usually described as fifty percent. The statute says fifty percent or $125,000, whichever is lesser, and for virtually every Idaho home the second one wins.
What the statute actually says
Idaho Code 63-602G(1): for each tax year, the first one hundred twenty-five thousand dollars ($125,000) of the market value for assessment purposes of the homestead, or fifty percent (50%) of the market value for assessment purposes of the homestead, whichever is the lesser, shall be exempt from property taxation.
Two branches, and the lesser one applies. They are equal at $250,000 of value. Under $250,000 the 50% branch is smaller, so you get half. At or above $250,000 the $125,000 branch is smaller, so you get $125,000.
Why that makes it flat
The crossover only matters if Idaho homes are worth less than $250,000, and they are not. As of August 2026 the typical home value was $353,114 in Pocatello, $377,654 in Lewiston, $386,833 in Twin Falls, $410,200 in Idaho Falls, $443,024 in Rexburg, $493,522 in Boise City and $605,220 in Coeur d'Alene.
Every one of those is above the crossover. So the correct way to think about Idaho's exemption is a fixed $125,000 reduction, not a percentage. On a $500,000 Idaho home the taxable base is $375,000, and on a $400,000 home it is $275,000. The reduction is the same number either way.
A flat exemption is a regressive one
| Metro | Typical value, Aug 2026 | $125,000 as a share of value |
|---|---|---|
| Pocatello | $353,114 | 35.4% |
| Lewiston | $377,654 | 33.1% |
| Twin Falls | $386,833 | 32.3% |
| Idaho Falls | $410,200 | 30.5% |
| Rexburg | $443,024 | 28.2% |
| Boise City | $493,522 | 25.3% |
| Coeur d'Alene | $605,220 | 20.7% |
The same statutory benefit covers over a third of a typical Pocatello home and a fifth of a typical Coeur d'Alene home. For a move-up that cuts a particular way: losing the exemption during an overlap costs roughly the same dollars wherever you are in Idaho, so it hurts a modest budget proportionally more.
One homestead, and the county checks
Subsection (2)(c) requires the owner to certify three things: that he is applying, that the homestead is his primary dwelling place, and that he has not made application in any other county for the exemption and has not made application for the exemption on any other homestead in the county.
That last clause is a personal certification, which is a different thing from a statutory ceiling you might quietly exceed. And subsection (6)(a)(i) puts an affirmative duty on the county: prior to granting an exemption, the county assessor shall investigate whether an applicant for the exemption has claimed the exemption for another homestead, and shall not grant the exemption where it appears the exemption has been improperly claimed. There is a recovery mechanism for exemptions improperly claimed or approved.
The application itself supports that. Under (3) it asks for the homeowner's full name, date of birth, complete address, and most recent previous complete address, plus an Idaho driver's licence or state identification card number. New arrivals who have not been domiciled in Idaho for at least ninety days have ninety days from the initial application to supply one, and there is an exception for active military service.
The dates
Subsection (5) is the part that catches movers. The full exemption is in effect as of January 1 of the tax year in which a complete application is submitted and approved. It shall not be prorated. To receive it for the current tax year the homeowner applies on or before the end of the county's normal business hours on the last business day of the year, and approved applications received after the second Monday in July are granted as tax cancellations based on the amount for which the property qualified.
No proration means the exemption does not split by months of occupancy. Combined with subsection (4), which lets you apply once only while you still occupy the same homestead, a move means a fresh application on the new house and a firm answer rather than a partial one.
What this means for a move
The exemption follows owner-occupancy, and Idaho offers no way to keep it on a house you have moved out of. That is covered on the owner-occupancy page, which also sets out why Utah reaches the opposite result. The financing side is on the structures page, and the full picture on the Idaho guide.
Frequently asked questions
How much is the Idaho homeowner's exemption in 2026?
Idaho Code 63-602G(1) exempts the first $125,000 of market value, or 50% of market value, whichever is the lesser. The two branches cross at $250,000, so for any home worth more than that the exemption is $125,000.
Is the Idaho homeowner's exemption 50% of my home's value?
Only if your home is worth less than $250,000. Above that the $125,000 cap is the lesser amount and governs instead. Since the lowest typical metro value in Idaho was $353,114 in Pocatello as of August 2026, most Idaho homeowners receive the flat $125,000.
Can I claim Idaho's homeowner's exemption on two homes?
No. Idaho Code 63-602G(2)(c)(iii) requires the owner to certify that he has not applied for the exemption in any other county and has not applied on any other homestead in the county. Under 63-602G(6)(a)(i) the county assessor must investigate whether an applicant has claimed it elsewhere and must refuse it where it appears improperly claimed.
When is the Idaho homeowner's exemption application due?
By the end of the county's normal business hours on the last business day of the year, under Idaho Code 63-602G(5). Approved applications received after the second Monday in July are granted as tax cancellations rather than as a standard exemption for that year.
Is the exemption prorated if I only owned the home part of the year?
No. Idaho Code 63-602G(5) states plainly that the exemption shall not be prorated, and that it is in effect as of January 1 of the tax year in which a complete application is submitted and approved.
What does the Idaho exemption application ask for?
Under 63-602G(3): full name, date of birth, complete address, and most recent previous complete address, plus an Idaho driver's licence number or Idaho state identification card number. Applicants not domiciled in Idaho for at least ninety days have ninety days from initial application to provide one, with an exception for active military service.
Mike Certo · NMLS #260555 · Cornerstone First Mortgage NMLS #173855 · Equal Housing Lender. Educational content about financing, not a loan commitment and not legal, tax, or real estate advice. Idaho's homeowner's exemption is administered county by county under Idaho Code 63-602G and 63-703, and eligibility depends on your facts; your county assessor, your CPA or an Idaho attorney, and your real estate agent each handle their own part. Loans are subject to borrower and property qualification.