Idaho Salary & Paycheck Calculator 2026
Idaho has a flat 5.695% state income tax (cut from 5.8% in 2023, originally converted from a 4-bracket progressive system in 2022 special session HB 1). The state conforms to the federal standard deduction ($16,100 single / $32,200 MFJ in 2026), making the return simple. No local income tax. Boise, Meridian, Nampa, Coeur d'Alene, Idaho Falls all run pure state + federal + FICA paychecks. Idaho has been a top US destination for California, Oregon, and Washington relocations since 2018, partly attributable to the favorable tax structure plus moderate cost of living.
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Annual Take-Home
$58,668
≈ $4,889/mo · $2,256/biweekly · effective rate 16.78%
🏖️ Plan ahead with this take-home
Tax Breakdown
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Salary Calculator
Annual gross to take-home: federal + state + FICA + 401(k)/HSA modeling for all 50 states.
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Apply the 2025 OBBBA tip deduction (up to $25,000) for servers, drivers, stylists, and other tipped workers.
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1099, sole prop, or LLC: self-employment tax (15.3%) plus quarterly estimates.
Calculate SE taxIdaho State Tax Facts (2026)
Tax Structure
Flat 5.695%
Top Rate
5.695%
Standard Deduction
Conforms to federal ($16,100 single / $32,200 MFJ)
Other State Payroll
None at state level
Notable Idaho payroll feature
Idaho converted from a 4-bracket progressive schedule to a flat rate via HB 1 (2022 special session) — currently 5.695% (down from 5.8% in 2023). Idaho conforms to the federal standard deduction, keeping returns simple. No local income tax. Property tax averages 0.67% effective. Fast-growing state — Boise metro has been a top-10 US growth metro for population in-migration since 2018.
How a Idaho paycheck actually works
Withholding on an Idaho paycheck flows through Form ID W-4 (the state redesigned its form to align closely with the federal post-2020 W-4 design). The flat 5.695% rate (down from 5.8% in 2023) applies to all federal taxable income above the federal-conforming standard deduction — meaning Idaho taxable wages run very close to federal taxable wages for most filers. No local income tax in Boise, Meridian, Nampa, or anywhere else in Idaho. The state's revenue mix leans on income tax (about 32% of state revenue), sales tax (29%), and property tax (state-administered for school-funding equalization).
Take-home math at three tiers, Idaho single filer 2026: $60,000 → about $4,400 federal + $4,590 FICA + $2,500 ID state (after federal-conforming standard deduction) = $11,490 deductions, take-home $48,510 (81%). $100,000 → $11,800 federal + $7,650 FICA + $4,778 ID = $24,228, take-home $75,772 (76%). $150,000 → $24,000 federal + $9,275 FICA + $7,625 ID = $40,900, take-home $109,100 (73%). Idaho's 5.695% flat rate puts effective state burden between Colorado (4.40%) and South Carolina (6.4%) — reasonable for a low-population growth state with moderate housing prices.
Idaho's tax structure is among the simpler in the country. Flat rate, federal-conforming standard deduction, no local income tax, no estate tax, no inheritance tax. Property tax averages 0.67% effective — among the lower rates in the western US. Sales tax stacks 6% state + up to 3% local for ceilings around 9% in resort areas (Sun Valley, McCall). The state offers a generous Social Security exemption (Idaho fully exempts Social Security at the state level for all filers, regardless of income), and Idaho exempts a portion of qualifying pension income for retirees age 65+. Combined with the moderate flat rate and federal-conforming structure, Idaho is one of the more retiree-friendly western states.
The single highest-leverage tactic for Idaho W-2 earners is maxing pre-tax 401(k) and HSA, since Idaho conforms to federal pre-tax treatment. A $24,500 401(k) deferral saves about $1,395 in Idaho state tax. The bigger long-term lever for tech-industry workers in Boise is residency-timing: Boise has emerged as a meaningful Pacific Northwest tech alternative (Micron, HP, Clearwater Analytics, Albertsons digital), and relocating from California or Washington pre-IPO captures the state-tax delta on RSU and ISO exercises. Idaho's IDeal 529 plan offers a state deduction up to $6,000 single / $12,000 MFJ for in-state contributions.
Idaho tax quirks worth knowing
- •Idaho converted from progressive (4 brackets, 1%–6%) to flat 5.8% in 2023 special session, then cut to 5.695% in 2024.
- •Conforms to federal standard deduction — simpler returns than non-conforming states.
- •Idaho fully exempts Social Security from state tax for all filers — favorable retirement structure.
- •Property tax: 0.67% effective — among the lower rates in the western US.
Sources: federal brackets + standard deduction from IRS Rev. Proc. 2025-32; retirement contribution limits ($24,500 401(k), $4,400 HSA, $7,500 IRA) from IRS Notice 2025-67; FICA limits from the SSA 2026 Fact Sheet;Idaho state brackets verified against the Tax Foundation 2026 State Income Tax Rates compilation and the official Form 40 Individual Income Tax Forms (ID State Tax Commission). Recent Idaho reforms referenced: ID HB 1 (2022 special session) — converted progressive 4-bracket schedule to flat 5.8% (cut to 5.695% in 2024). Always cross-check with your state DOR before relying on any number for filing.
Federal payroll tax reference
Above-the-state-line, every Idaho paycheck owes federal income tax + FICA (Social Security + Medicare). The breakdowns: