Iowa W-4 Withholding Calculator 2026

Federal + Iowa state income tax side-by-side.

Your Paycheck

$

Filing Status

Credits & Adjustments (Optional)

$

$2,000 per child under 17

$
$
$

File your Iowa return

Total withholding per paycheck

$328

$8,532 / year

Annual gross$65,000

Federal

Taxable income$50,000
Income tax$6,146
Per paycheck$236
Effective rate9.5%
Marginal rate22.0%

Iowa State Tax

Annual state tax$2,386
Per paycheck$92
Effective rate3.7%
Marginal rate3.8%

Iowa is phasing to a flat tax. Rate may decrease further in 2027.