$50,000 gross
$40,558
take-home · 18.9% effective tax
Flat 5.30% Rank #34 of 51 2026 tax year
State income tax · 2026 tax year
How much does $100K take home in Idaho?
Idaho applies a flat 5.30%. See where every withheld dollar goes, the full bracket schedule, and your own take-home.
Gross income
$100,000 100.0%
Federal income tax
$13,167 13.2%
FICA (Social Security + Medicare)
$7,650 7.6%
State income tax
$4,450 4.5%
Take-home pay
$74,733 74.7%
The bottom line
A single filer earning $100,000 in Idaho keeps $74,733 after federal income tax, FICA, and Idaho's flat 5.30% state tax, an effective rate of 25.3% (state tax alone: $4,450).
Single filer taking the standard deduction, wage income only. Federal and FICA are identical in every state - Idaho's difference is its state income tax line.
$74,733 Take-home on $100K (single)
25.3% Effective rate (fed + FICA + state)
$4,450 State income tax on $100K
#34 of 51 by total burden (1 = lowest)
Every figure on PlainSalary is computed directly from official IRS, state Department of Revenue, and SSA tax data, no number is typed in by an editor. State tax figures are computed directly from official Department of Revenue data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.
Idaho take-home pay by salary (2026, single)
What's left after federal income tax, FICA, and Idaho state tax.
$100,000 gross
$74,733
take-home · 25.3% effective tax
$200,000 gross
$139,180
take-home · 30.4% effective tax
Where Idaho sits on the state-tax scale
States immediately above and below Idaho by total tax burden on a $100K single filer (state income tax shown).
Idaho 2026 bracket schedule (single filer)
| Taxable income | Marginal rate |
|---|---|
| $0 – $1,000,000,000,000,000 | 5.30% |
Source: Tax Foundation, 2026 State Individual Income Tax Rates and Brackets, cross-checked against the Idaho Department of Revenue. Single-filer schedule.
Quick Idaho state-tax estimate
Enter taxable income for the Idaho state portion (single filer, 2026). For the full federal + FICA picture use the calculator.
Methodology
Take-home figures assume a single filer taking the standard deduction with wage income only, no credits, itemized deductions, or local taxes. Federal tax uses the 2026 IRS brackets (Rev. Proc. 2025-32); FICA is 6.2% Social Security to the $184,500 wage base plus 1.45% Medicare. State tax walks Idaho's 2026 brackets. See the full methodology.