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Moving from Seattle / Washington to Boise

Washington has zero income tax — same as Idaho for most retirees. The financial case for Seattle buyers is property tax savings and equity conversion, not income tax arbitrage.

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WA vs Idaho — The Tax Comparison

FactorSeattle / WashingtonIdahoNotes
State income tax (WA)Zero$0 (Idaho)Income tax is a draw — both effectively zero for most retirees
Property tax — $700K home$5,600–$8,400/yr (King County ~0.8–1.2%)~$4,370/yr (Ada Co., $700K after homestead)King County rates vary significantly by city; Bellevue/Redmond higher
Home equity (Seattle area)$400K–$1M+ (Eastside often higher)Seattle buyers converting equity bank meaningful capital
Climate differenceCool, rainy, overcast Oct–MayDry, 240 sunny days, real wintersWA buyers often welcome Boise's sunshine and dry climate

Seattle Buyer — Selling $900K Bellevue Home, Buying Cadence at Bainbridge $575K

Annual savings estimate

Net proceeds from Bellevue sale~$850,000
Cadence at Bainbridge purchase$575,000
Equity banked at closing~$275,000
Annual property tax savings (King Co. $7,200 → Ada Co. $3,230)~$3,970/yr
Annual income tax savings$0 (both WA and ID zero for most retirees)
Annual sunshine days gained~150–180 more days than Seattle
20-year property tax savings~$79,400 cumulative

Seattle buyers are the second-largest feeder group in the Boise market after California. The financial case is less dramatic than California — Washington has no income tax, so there is no income tax arbitrage. The primary drivers are property tax savings, equity conversion, and climate.

King County property tax on a $700,000–$900,000 Eastside home runs $5,600–$10,800 per year depending on city. Ada County on the same value runs $4,370 after the homestead exemption. The property tax savings are real but smaller than the CA comparison. The equity conversion is real — $275,000 banked from the Bellevue example above — but smaller than Bay Area moves.

The climate argument is the strongest driver for many Seattle buyers. Boise averages 240 sunny days per year. Seattle averages approximately 70 sunny days. The cloud cover and rain of a Seattle winter is the primary lifestyle complaint among Pacific Northwest retirees. Boise's dry high desert climate and 4 full seasons (including a real summer) is genuinely different.

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Seattle/WA equity range: $250K–$900K. What it buys in the Treasure Valley:

Idaho Homestead Exemption

Ada County homestead exemption: file once with Ada County Assessor after closing. Washington state has no equivalent program for homeowners — the Idaho homestead exemption is a benefit Washington buyers gain, not lose.

The exemption applies to your primary Idaho residence. File with your county assessor (Ada County Assessor: 208-287-7200; Canyon County Assessor: 208-454-7431) in the first year after closing. Bring your deed and proof of primary residency.

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