Flat 3.80% Rank #17 of 51 2026 tax year

State income tax · 2026 tax year

How much does $100K take home in Iowa?

Iowa applies a flat 3.80%. See where every withheld dollar goes, the full bracket schedule, and your own take-home.

$100,000 single filer in Iowa
IRS · SSA · Tax Foundation · 2026

The bottom line

A single filer earning $100,000 in Iowa keeps $75,992 after federal income tax, FICA, and Iowa's flat 3.80% state tax, an effective rate of 24.0% (state tax alone: $3,190).

Single filer taking the standard deduction, wage income only. Federal and FICA are identical in every state - Iowa's difference is its state income tax line.

$75,992 Take-home on $100K (single)
24.0% Effective rate (fed + FICA + state)
$3,190 State income tax on $100K
#17 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.

Iowa take-home pay by salary (2026, single)

What's left after federal income tax, FICA, and Iowa state tax.

$50,000 gross

$41,067

take-home · 17.9% effective tax

$100,000 gross

$75,992

take-home · 24.0% effective tax

$200,000 gross

$141,939

take-home · 29.0% effective tax

Where Iowa sits on the state-tax scale

States immediately above and below Iowa by total tax burden on a $100K single filer (state income tax shown).

KY

Kentucky

3.50% top marginal rate
Structure
Flat tax
Burden @ $100K
$2,940

PA

Pennsylvania

3.07% top marginal rate
Structure
Flat tax
Burden @ $100K
$3,070
Selected

IA

Iowa

3.80% top marginal rate
Structure
Flat tax
Burden @ $100K
$3,190

NC

North Carolina

3.99% top marginal rate
Structure
Flat tax
Burden @ $100K
$3,350

MS

Mississippi

4.00% top marginal rate
Structure
Flat tax
Burden @ $100K
$3,360

Iowa 2026 bracket schedule (single filer)

Taxable income Marginal rate
$0 – $1,000,000,000,000,000 3.80%

Source: Tax Foundation, 2026 State Individual Income Tax Rates and Brackets, cross-checked against the Iowa Department of Revenue. Single-filer schedule.

Quick Iowa state-tax estimate

Enter taxable income for the Iowa 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 Iowa's 2026 brackets. See the full methodology.

Keep exploring