Tax year 2026 · Single filer · $100kRank #43Has state income tax

Idaho Effective Tax Rate 2026

Employee effective tax rate in Idaho on a fixed $100,000 single-filer salary — about 26.1% ($73,880 take-home). Federal, state, and FICA only; sales and property tax excluded.

By Sammy S. · Founder · AuthorUpdated for 2026

26.1%

Effective rate @ $100k

#43

National rank

$73,880

Take-home

$26,120

Est. tax

Calculate your rate Full ranking

Idaho effective tax rate snapshot

Idaho ranks #43 of 50 for effective employee tax rate on a fixed $100,000 single-filer salary in 2026. Modeled effective levy is about 26.1% after federal income tax, state income tax, and employee payroll (FICA). Take-home ≈ $73,880. Sales and property taxes are excluded.

Effective @ $100k

26.1%

Rank #43 of 50

Take-home

$73,880

$26,120 total tax

At $50k

20.6%

$39,705 net

At $250k

32.0%

Has state income tax

Key takeaways for Idaho

Idaho’s effective employee levy at $100,000 is about 26.1% (rank #43).
Modeled take-home ≈ $73,880 after about $26,120 in federal, state, and payroll — paycheck-only.
Across bands: 20.6% at $50k → 32.0% at $250k.
Idaho has state income tax; federal tax and FICA still apply.
For context: Texas ≈ 20.8%; California ≈ 27.2% at $100k.

Effective rate by income in Idaho

Same single-filer engine at four gross salaries. Rankings use the $100,000 column.

Gross	Effective rate	Take-home	Est. tax
$50k	20.6%	$39,705	$10,295
$100krank key	26.1%	$73,880	$26,120
$150k	29.4%	$105,841	$44,159
$250k	32.0%	$169,932	$80,068

How Idaho compares on effective rate

Gap vs the lowest and highest rates at $100k, plus nearby peers by effective rate.

vs #1 (Alaska)

5.3 pp higher than #1

vs last (Hawaii)

2.2 pp lower than last place

vs Texas

5.3 pp higher than Texas

Take-home $5,300 less

vs California

1.1 pp lower than California

Take-home $1,086 more

#44 · 26.1%

#45 · 26.2%

#42 · 26.0%

#41 · 25.9%

#40 · 25.8%

#39 · 25.8%

How we calculate the effective tax rate in Idaho

We run fixed gross salaries through our US paycheck engine for a single filer in tax year 2026, with Idaho selected. Modeled withholdings include federal income tax, state income tax (when applicable), and employee payroll (FICA plus any modeled state disability / paid family leave premiums). Effective rate = total modeled tax ÷ gross.

Results are educational estimates for comparing jurisdictions — not a substitute for your W-2 stub or a filed return. Local city taxes, benefits deductions, and non-paycheck levies (sales, property) are excluded.

Effective tax rate FAQ — Idaho

In this 2026 single-filer model, Idaho’s effective employee levy at $100,000 is about 26.1% — roughly $26,120 combined federal income tax, state income tax, and employee payroll on $100,000 gross, leaving about $73,880 take-home. Rank #43 of 50 (lowest rate = #1).

Idaho ranks #43 of 50 states at the $100,000 band. #1 (Alaska) is about 20.8%; last place (Hawaii) is about 28.3%. Gap vs #1 is about 5.3 percentage points.

About $73,880 after roughly $26,120 in modeled levies (26.1% effective) on a $100,000 single-filer salary.

Yes — Idaho has state income tax (flat structure in our state table). Combined with federal income tax and employee payroll, the modeled effective rate at $100k is about 26.1%.

Four fixed bands: $50k, $100k, $150k, $250k. Rankings use the $100,000 band. At $50k Idaho is about 20.6%; at $250k about 32.0%.

No. Effective rate is total modeled tax ÷ gross. Marginal rate is the tax on the next dollar of income. This page publishes effective employee levies (income tax + payroll), not top marginal brackets alone.

No — paycheck-only. Sales tax, property tax, and most benefit deductions are excluded. For broader burden and COL context, see salary comparison by state and household tax by state.

This page models a single filer with standard defaults. Married filing jointly, head of household, dependents, and pre-tax deductions change results. Use the US paycheck calculator with Idaho selected to personalize.

Idaho’s effective rate is about 5.3 percentage points higher than Texas (26.1% vs 20.8%), so take-home is about $5,300 lower.

Idaho’s effective rate is about 1.1 percentage points lower than California (26.1% vs 27.2%), so take-home is about $1,086 higher.

Rankings here are effective employee levies after federal, state, and payroll — not income-tax status alone. Progressive brackets, flat rates, and payroll premiums all move the rate at $100k.

Use the band ladder on this page ($50k–$250k), open the Idaho salary comparison profile for more incomes, or run the US paycheck calculator with Idaho selected for your filing status and deductions.

Tax Freedom Day turns a similar paycheck levy rate into a calendar date. This profile focuses on percentage and dollar take-home at fixed incomes; see Tax Freedom Day for the calendar framing.