Idaho income tax calculator
Estimate your Idaho take-home pay after federal tax, FICA, and Idaho income tax. Idaho has a flat 5.3% state income tax. Set your salary and filing status to see the breakdown.
Annual salary$100,000
Filing status
Estimated take-home pay
$74,73325.3% of your salary goes to federal income tax, FICA, and Idaho state income tax.
One wage earner; excludes local taxes and unmodeled deductions and credits.
Federal income tax
$13,17013.2% of salary
FICA (Social Security + Medicare)
$7,6507.6% of salary
Idaho income tax
$4,4474.4% of salary
Estimate, not tax advice. Uses 2026 federal figures and 2026 Idaho brackets, with the deductions modeled below. Assumes one wage earner even for a joint return. Excludes local taxes, itemized deductions, credits and some state adjustments. Your actual tax depends on your full return.
Idaho state income tax rates for 2026
- Idaho taxes every dollar of taxable income at a single 5.3% rate, after the modeled deduction, before credits. Your effective rate on gross income may be lower.
- The model uses a Idaho standard deduction of $16,100 for a single filer and $32,200 filing jointly.
- Idaho consolidated its graduated brackets into a single flat rate in 2023.
Frequently asked questions
Idaho applies a flat 5.3% state income tax to taxable income, regardless of how much you earn.
It estimates 2026 federal income tax (standard deduction, single or married filing jointly), FICA (Social Security up to the wage base plus Medicare), and Idaho state income tax using 2026 brackets. It does not include local or city taxes, itemized deductions, credits, or other withholdings.
No. It is an estimate for planning, not tax advice or a paycheck guarantee. It uses 2026 federal figures and 2026 Idaho brackets. Your real tax depends on deductions, credits, other income, and local taxes. Confirm with a tax professional before making decisions.
Yes. Nino’s AI software brings your accounts together so you can explore tax questions alongside your wider finances. Add a human CPA and CFP team for a financial plan, tax planning and filing, and help taking the next steps. Software starts at $20/month; services start at $3,600/year including Ultra software. Your service quote depends on the work involved.