Illinois income tax calculator
Estimate your Illinois take-home pay after federal tax, FICA and state tax. Illinois has a flat 4.95% state income tax.
Your salary
Annual salary
$Filing status
Take-home pay
$74,230Federal
$13,170FICA
$7,650Illinois
$4,950Illinois state income tax rates for 2026
- Flat rate
- 4.95%
- Illinois taxes every dollar of taxable income at a single 4.95% rate, after the modeled deduction, before credits. Your effective rate on gross income may be lower.
- The Illinois constitution requires a single flat rate on income. A 2020 ballot measure to permit graduated rates was rejected by voters.
Frequently asked questions
Illinois applies a flat 4.95% state income tax to taxable income, regardless of how much you earn.
It uses 2026 federal figures and 2026 Illinois brackets: federal income tax with the standard deduction, FICA (Social Security up to the wage base plus Medicare) and Illinois income tax after the deductions modeled on this page. It assumes one wage earner, even on a joint return. It leaves out local or city taxes, itemized deductions, credits, other withholdings and some state adjustments, so your actual tax depends on your full return.
No. It is an estimate for planning, not tax advice or a paycheck guarantee. It uses 2026 federal figures and 2026 Illinois 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 financial planner 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.