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Iowa Withholding Calculator 2026

Estimate your Iowa state and federal income tax withholding, see which form to file (Form IA W-4), and get the exact W-4 line entries to break even.

Updated for tax year 2026 · Official source: irs.gov

Step 1

Filing status & income

Your main job
$
Step 3

Dependents

Step 4

Other adjustments (optional)

$
$
$

Projected result at filing

$0

You're on track to break even for tax year 2026

Total annual income
$60,000
Taxable income (after deductions)
$43,900
Projected federal tax for the year
$5,020
Projected federal withholding
$5,020
Difference
$0
Recommendation

Your W-4 is on track — projected withholding closely matches your projected tax, so no changes are needed to break even.

Iowa state withholding

Form IA W-4
Estimated state tax for the year
$1,628
Per paycheck
$1,628.20
Effective state rate
2.71%
  • •Iowa moved to a flat 3.80% rate.

Compare scenarios

See how extra withholding on Step 4(c) changes your year-end result and take-home pay.

ScenarioCurrent W-4As enteredRecommendedNo changeYour what-if+$0/check on 4(c)
Annual withholding$5,020$5,020$5,020
Withheld per paycheck$5,020.00$5,020.00$5,020.00
Year-end resultBreak evenBreak evenBreak even

Estimates for tax year 2026 based on IRS Publication 15-T and the 2026 federal tax tables. This is not tax advice — verify with the IRS or a tax professional before filing your W-4.

How Iowa state tax withholding works

Iowa taxes wage income, so your employer withholds Iowa income tax from each paycheck in addition to federal tax. You tell your employer how much to withhold on Form IA W-4 (Employee Withholding Allowance Certificate (44-019)), the state’s counterpart to the federal Form W-4.

For 2026, Iowa applies a flat 3.8% rate to your taxable wages, after a standard deduction of $16,100 (single) or $32,200 (married filing jointly) and personal/dependent tax credits.

Enter your pay above to see your estimated Iowa withholding per paycheck and per year, alongside your federal withholding and the exact W-4 entries.

Iowa vs. federal withholding

Your Iowa and federal withholding are figured separately. Federal withholding follows the IRS Publication 15-T tables and your Form W-4; Iowa withholding follows the state’s own rates and your Form IA W-4. Getting one right doesn’t guarantee the other — this calculator handles both so you don’t owe a surprise bill to either the IRS or Iowa.

Important Iowa notes

  • Iowa moved to a flat 3.80% rate.

Frequently asked questions

Sources & disclaimer

Federal figures use the 2026 IRS Publication 15-T. Iowa withholding is based on the 2026 Iowa income-tax structure; confirm exact figures and complete Form IA W-4 at the tax.iowa.gov website.

This tool provides estimates for educational purposes and is not tax advice. State withholding is modeled from the state’s income-tax rules and may differ from the exact wage-bracket tables your employer uses. Verify against your pay stub and consult a qualified tax professional before submitting your W-4 or Form IA W-4.