Idaho Paycheck Calculator
From gross salary to the number that actually hits your bank account
Idaho workers pay a flat 5.3% state income tax on their taxable income — a rate that was reduced from 5.695% by House Bill 40, signed into law on March 6, 2025, effective retroactively to January 1, 2025. Idaho moved from a multi-bracket progressive system to a flat structure in 2023, and the 2025 legislation pushed that flat rate even lower. The 5.3% applies to all Idaho taxable income above a small zero-rate threshold ($4,811 for single filers; $9,622 for married filing jointly), so virtually all wage earners pay the full flat rate on their earnings.
Compared to no-tax states like Nevada, Washington, or Wyoming, Idaho workers do give up a meaningful slice of each paycheck to state income tax. On a $75,000 salary, Idaho state income tax runs approximately $3,764 per year (roughly 5.02% effective rate after the standard deduction). On top of that, federal income tax and FICA taxes (6.2% Social Security + 1.45% Medicare) also apply — these are the same regardless of which state you live in.
How to use this calculator: Enter your gross annual salary and set the State Rate to 5.3% for Idaho. The calculator estimates your take-home pay after federal income tax (based on 2025 brackets for a single filer), Idaho state income tax at the flat rate, and FICA payroll taxes. Results are estimates — your actual withholding may differ based on filing status, pre-tax deductions (401k, HSA), and allowances on your W-4.
Practical example — Idaho
A single Idaho resident earning $75,000 per year can expect to pay approximately $3,764 in state income tax at the 5.3% flat rate, resulting in an estimated annual take-home pay of around $52,000 after federal taxes, FICA, and state withholding.
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❓ Frequently asked questions
Does Idaho have a state income tax?
Yes. Idaho imposes a flat state income tax. As of 2025, the rate is 5.3% on all taxable income above $4,811 for single filers (and $9,622 for married filing jointly). House Bill 40, signed in March 2025, reduced the rate from the prior 5.695% flat rate, effective January 1, 2025.
Is Idaho's income tax flat or progressive?
It is flat. Idaho transitioned from a multi-bracket progressive system to a single flat rate in 2023. The current flat rate is 5.3% for 2025 — the same percentage applies whether you earn $20,000 or $500,000, after the small zero-rate threshold is passed.
How much is taken out of a paycheck in Idaho for a $75,000 salary?
On a $75,000 gross annual salary (single filer, standard deduction), approximate withholdings are: Idaho state income tax ~$3,764/year (5.3% flat), Social Security ~$4,650, Medicare ~$1,088, and federal income tax roughly $8,000–$9,500 depending on deductions. That leaves an estimated take-home of around $51,000–$53,000 per year, or roughly $4,250–$4,416 per month.
How does Idaho compare to states with no income tax?
Compared to zero-income-tax states like Nevada, Washington, Wyoming, or Texas, Idaho workers earning $75,000 pay roughly $3,700–$4,000 more per year in state taxes. However, those no-tax states often offset revenue through higher property taxes or sales taxes, so the overall tax burden varies.
Are there Idaho-specific deductions or credits that affect take-home pay?
Yes. Idaho allows a standard deduction that mirrors the federal standard deduction (adjusted for Idaho law). The state also offers a grocery tax credit ($155 per person in FY2026), a retirement income deduction for those 65+, and credits for child and dependent care. These reduce your Idaho taxable income but do not appear directly on your paycheck withholding — they typically result in a smaller tax bill or refund at filing.