Idaho Paycheck Calculator
Idaho withholds 5.3% of annualized wages above an exemption threshold — $15,000 per year for single filers and heads of household, or $30,000 for married couples filing jointly in 2026. Below the threshold, no state income tax is withheld at all.
How Idaho taxes your paycheck in 2026
- State income tax
- Flat 5.3% above the exemption threshold
- Exemption threshold (2026)
- $15,000 single/HoH, $30,000 married
- Local income tax
- None anywhere in Idaho
Idaho paycheck FAQs
Is Idaho's income tax really flat?
Yes — since 2025, Idaho applies a single 5.3% rate to all taxable income above the exemption threshold, replacing its old multi-bracket system.
What is the Idaho exemption threshold?
It's the amount of annualized wages exempt from withholding before the 5.3% rate applies: $15,000 for single filers and heads of household, $30,000 for married couples filing jointly in 2026.
Does this calculator include the Idaho Child Tax Credit?
Not yet. Idaho offers a withholding allowance for qualifying children, but its status for 2026 depends on pending state legislation we couldn't confirm had passed at the time this was built. If you claim children on your Idaho W-4, your actual withholding may be a bit lower than shown here — we'd rather flag that than guess.
Other state calculators
Tax data verified 2026-07-21 against the official source. See our methodology.