Iowa paycheck calculator

The same calculator, pre-set to Iowa. State figures below are computed from Iowa's own published withholding method — cited at the bottom of this page.

Your pay

Gross pay per check Pay entered as Pay frequency Year-to-date wages before this check (for the Social Security cap)

Federal — your W-4

Filing status (Step 1c) Step 2 box is checked (multiple jobs / spouse works — use the higher withholding schedules) Step 3 — dependents amount ($)

More W-4 detail (Steps 4a–4c)

Step 4(a) — other income, annual ($) Step 4(b) — deductions above the standard amount, annual ($) Step 4(c) — extra withholding per check ($)

Deductions per check

Pre-tax retirement — 401(k)/403(b)/457 ($) Pre-tax premiums & HSA — cafeteria plan ($) Post-tax deductions ($)

State

Work state

State inputs mirror that state's own withholding form.

Your pay stub Annual figures

No signup. Nothing you type is stored or sent anywhere — every figure is computed on this device, from the published withholding methods cited below.

Worked example

Worked example. Example 1 of Iowa's withholding formula publication: biweekly $2,100, 'Other' status, $40 of allowance credit.
Federal income tax $168.15 · Social Security $130.20 · Medicare $30.45 · Iowa withholding $59.26 · Take-home $1,711.94 per paycheck (biweekly)

How Iowa withholding works

State form: IA W-4 (44-019).

Iowa's formula: subtract the annual deduction for your status ($13,000 for most filers, $19,500 head of household, $26,000 married with a non-earning spouse) prorated to the period, apply the flat 3.80%, then subtract the total allowance dollars stated on your 2024-or-later IA W-4 (older forms: $40 per allowance), and add any additional amount you requested.

Current parameters

flat rate pct	3.8
formula steps	T1 = G - D (gross pay-period wages minus deduction D); T2 = T1 x 3.80%; T3 = T2 - (W / P) (W = total allowance amount on IA W-4, a dollar credit; P = pay periods per year); T4 = T3 + A (additional withholding requested)
deduction D annual by marital status on 2024 or later IA W4	See the cited publication
allowance credit	For IA W-4s from 2023 or earlier, each allowance = $40 credit (W = allowances x $40); 2024+ IA W-4 states the total allowance amount in dollars

What this page covers — and what it doesn't

State method only; Iowa has no local income taxes (school district surtaxes are settled on the return, not withheld).

Source. Iowa Individual Income Tax Withholding Formula, Effective January 1, 2026 (Released November 2025) — Iowa Department of Revenue — tax year 2026. Tables checked 2026-11-06. Official source.