Idaho paycheck calculator

The same calculator, pre-set to Idaho. State figures below are computed from Idaho'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. From EPB00744 and the Tax Commission's computing guide: biweekly single, $1,212, 4 allowances at their 2026 value of $0.
Federal income tax $61.59 · Social Security $75.14 · Medicare $17.57 · Idaho withholding $31.00 · Take-home $1,026.70 per paycheck (biweekly)

How Idaho withholding works

State form: ID W-4.

Idaho withholds 5.3% of the part of each check above its zero-rate threshold ($16,100 a year single or head of household; $32,200 married, prorated to the period), and rounds the result to whole dollars. Child-credit allowances are worth $0 in 2026 — the credit sunset — so allowance counts do not change the math this year.

Current parameters

flat rate pct	5.3
zero rate threshold annual	See the cited publication
formula	5.3% of wages (after subtracting Idaho Child Tax Credit allowances) over the threshold for the pay period/status; annual thresholds $16,100 single/HoH and $32,200 married (per-period equivalents in EPB00744, e.g. biweekly $619 single / $1,238 married, weekly $310 / $619, monthly $1,342 / $2,683)
child tax credit allowance	Idaho Child Tax Credit sunsetted per Idaho Code 63-3029L; the Commission's 2026 'Computing Withholding' examples use $0.00 per allowance (ICTCAT). Withholding tables were revised for 2026 (Commission notice, July 31, 2026): use revised tables going forward, no retroactive adjustment required.

What this page covers — and what it doesn't

State method only; Idaho has no local income taxes.

Source. Table for Percentage Computation Method of Withholding (EPB00744, 07-23-2026) — Idaho State Tax Commission — tax year 2026. Tables checked 2026-11-06. Official source.