The math.
Real numbers, sourced.
Most real estate sites hide the financials behind “give us a call.” This page puts them on the screen. Property tax, income tax, insurance, closing costs — what you’ll actually pay, what gets better, and what gets worse when you move.
Updated May 2026. Every figure is sourced; see the research notes for citations.
Four figures worth memorizing.
Each one is a real differentiator vs. Washington, California, Oregon, or Texas.
- 0.50%
Idaho effective property tax rate
Statewide, owner-occupied. Lower than Texas, Spokane, Oregon, and most of California.
- 5.3%
Idaho income tax (flat)
New since 2025. Social Security is exempt; pensions and 401(k) are not.
- $0
Real estate transfer tax
Idaho has none. Washington’s graduated REET runs 1.1%–3.0% on the seller side.
- $125K
Homestead exemption (cap)
50% of home value, up to $125,000. Apply once through the county assessor.
0.50% effective. Plus a homestead exemption that actually matters.
Idaho’s effective property tax rate on owner-occupied housing is among the lowest ten in the country. The mechanics matter more than the rate.
Kootenai County’s 2025 average levy is 0.541%, with urban areas averaging 0.341% and rural areas averaging 0.452%. The county collects for roughly 45 taxing districts — schools, fire, highway, library, ambulance — so the real rate depends on which districts overlap your parcel.
On a $750K Hayden home with the homestead exemption applied, expect roughly $3,000–$4,500/year. That’s about a third of what the same buyer would pay in Austin and about half of what they’d pay in Spokane Valley.
The homestead exemption
Exempts 50% of your home’s value, capped at $125,000, applied to your primary residence and up to one acre. Once approved, it stays in place until you move — but you have to file the application through the county assessor. Newcomers often miss the first year because they bought after the deadline.
The Circuit Breaker — for retirees on fixed income
Reduces property tax by $250–$1,500 for homeowners 65+ (or blind, widowed, or disabled) with 2025 income under $39,130. Apply Jan–Apr through the assessor. On smaller homes with the homestead exemption already in place, the Circuit Breaker can effectively zero out the bill.
By state of origin
5.3% flat. Social Security exempt, pensions taxed.
Idaho restructured to a flat tax in 2025. The rate applies to income above the first $2,500 single / $5,000 joint.
Social Security income is fully exempt. Pension and 401(k) distributions are taxed at the 5.3% rate, with limited deductions available for military and civil-service retirees over 65. Capital gains are taxed as ordinary income, with a partial deduction available on certain Idaho-source property sales — verify with a CPA before relying on it.
The Washington-to-Idaho catch
Washington has no income tax. Moving to Idaho means picking up 5.3% on every dollar above the threshold. On a $200K household income that’s roughly $9,800/year in new state tax. For most W-2 households above ~$120K, the new income tax outweighs the property tax savings. The honest pitch for a Spokane Valley buyer is lifestyle, not taxes.
By state of origin
The Panhandle isn’t Sun Valley.
Idaho’s insurance market is under stress. North Idaho is currently the premium-increase story, not the non-renewal-crisis story. The distinction matters.
Statewide average homeowners premium rose from $1,308 in 2022 to $1,798 in 2024 — a 37% jump in two years. About a quarter of Idaho’s 91 homeowners insurers have non-renewed some or all policies. Three carriers have wound down homeowners operations in Idaho entirely.
The actual non-renewal crisis is in Blaine County (Sun Valley) and Boise County — both south-central, not the Panhandle. Kootenai and Bonner don’t appear on the worst lists. Pain in North Idaho is real, but it’s premium increases, not wholesale carrier withdrawal.
The 85% wildfire stat — what it actually means
First Street Foundation flags 85% of Kootenai County properties as having “some” wildfire risk over 30 years. That sounds alarming until you read the methodology — “some” includes the lowest risk band. The “major” and “extreme” categories are a much smaller subset, concentrated in the wildland-urban interface: the ridges above Hayden and CDA, upper Mica/Carlin Bay, and most of Bonner County’s timbered acreage. The Rathdrum Prairie and the immediate city core sit in much lower risk bands.
For a real quote, call an independent broker. Online data can’t tell you which carriers are still writing new policies on your specific parcel. We can point you to brokers who’ll give you straight answers.
No real estate transfer tax. This is the big one.
Idaho is one of a handful of states with no state or local real estate transfer tax — and against Washington, this is meaningful.
A $700K Spokane Valley sale costs the seller roughly $8,400–$10,500 in WA REET. That money simply doesn’t exist on the Idaho side of the transaction. California buyers see smaller transfer-tax savings ($1,500–$5,000+ in some Bay Area cities). Texas and Oregon have no state transfer tax either, so the comparison is neutral there.
Typical buyer total closing costs in Idaho run 2%–5% of purchase price. By Idaho custom, the seller pays the owner’s title policy and the buyer pays the lender’s — not law, just convention, and negotiable.
Three buyers. One $750K Hayden home.
Same target home, three origins. Monthly carrying cost above mortgage/PITI, married filing jointly, $200K household income. Honest about what gets worse, not just better.
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From California Selling an $800K Bay Area home (Prop 13 base from 2008)
Line item Before Hayden Property tax $330/mo $317/mo State income tax $1,400/mo $880/mo Homeowners insurance $240/mo $150/mo Vehicle registration (2) $32/mo $11/mo Total $2,000/mo $1,358/mo +$7,700/yr saved
What gets worse: You lose 18 years of Prop 13 base — if you stayed, the gap would widen in your favor. Heating costs jump from ~$30/mo to ~$200/mo in winter. Wildfire-zone insurance is a different shape, not a solved problem.
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From Washington Selling a $700K Spokane Valley home
Line item Before Hayden Property tax $540/mo $317/mo State income tax $0/mo $880/mo Homeowners insurance $160/mo $150/mo Vehicle registration (2) $30/mo $11/mo Total $730/mo $1,358/mo −$7,500/yr more
What gets worse: This is the painful one. The new Idaho income tax outweighs property tax savings for any W-2 household above ~$120K. WA → Idaho is rarely a tax win — the honest pitch is lifestyle, lake access, and lower non-tax cost of living.
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From Texas Selling a $500K Austin home
Line item Before Hayden Property tax $900/mo $317/mo State income tax $0/mo $880/mo Homeowners insurance $280/mo $150/mo Vehicle registration (2) $15/mo $11/mo Total $1,195/mo $1,358/mo roughly even
What gets worse: You trade ~$7,500/yr in property tax for ~$7,500/yr in income tax. The dollars roughly wash. What you’re actually buying is everything not on the tax bill — climate, water, density.
The four things you should ask us in person.
A reference page has limits. These belong in a conversation about your specific lot, specific household, specific timeline.
- Specific carrier availability for homeowners insurance in your ZIP code — call an independent broker for a real quote.
- Parcel-level property tax. Kootenai County collects for ~45 taxing districts. The exact bill depends on which districts overlap your specific lot.
- Wildfire risk at the property level. The county is rated "moderate" overall, but the ridges and the wildland-urban interface are a different story than the Rathdrum Prairie.
- Forest-land tax election for acreage in timber. Idaho Code 63-1701 et seq. — worth a conversation if you’re buying tracts large enough to qualify.
Every figure on this page is sourced and date-stamped. The full research file with citations lives in our notes — ask if you want it. We update this page when the underlying numbers change.