Illinois Salary After Tax 2026
Illinois is one of just a handful of states with a flat income tax — everyone pays the same 4.95% rate, whether you earn $40,000 or $400,000. That makes the math simpler than in graduated-bracket states like California or New York, but it doesn't necessarily mean a lower tax bill. This guide shows exactly how much you take home at every income level in Illinois, how the flat tax compares to neighboring states, and what to watch for beyond your paycheck.
How Much Tax Do You Pay on Your Salary in Illinois?
Illinois workers pay federal income tax, FICA (Social Security + Medicare), and a flat 4.95% state income tax on income above a $2,425 personal exemption. Here is what that means for real take-home pay at common salary levels:
| $60,000/year | $47,279/year · $3,940/month |
| $75,000/year | $57,436/year · $4,786/month |
| $100,000/year | $73,786/year · $6,149/month |
| $150,000/year | $105,853/year · $8,821/month |
Why a Flat Tax Cuts Both Ways
Because Illinois applies the same 4.95% rate to every dollar of income, lower earners pay a higher effective rate relative to states with a true $0 starting bracket, while very high earners pay a noticeably lower rate than they would in a steeply graduated state. There's no standard deduction in the federal sense — instead, Illinois uses a flat $2,425 personal exemption per filer (rising to $2,925 by the 2026 tax year) that reduces your taxable income before the 4.95% rate applies.
A 2020 ballot measure asked Illinois voters whether to switch to a graduated tax structure that would have lowered rates for most middle-class earners while raising them on high incomes. It was rejected, and the flat-rate system is written into the Illinois constitution — changing it again would require another constitutional amendment.
Illinois vs. Neighboring States
If you're near a state border, the comparison matters. Illinois has tax reciprocity agreements with Iowa, Kentucky, Michigan, and Wisconsin — meaning if you live in one of those states but work in Illinois, you pay income tax to your home state, not Illinois (and vice versa).
| Illinois (4.95% flat) | ~$4,830/year |
| Wisconsin (graduated, up to 7.65%) | ~$5,800/year |
| Indiana (3.05% flat + county tax) | ~$3,500–4,200/year |
| Missouri (graduated, up to 4.95%) | ~$4,200/year |
Indiana's lower flat rate plus county-level add-ons can land close to or below Illinois depending on the county — a relevant comparison for anyone weighing a move across the Illinois–Indiana border near Chicago.
Cost of Living in Illinois
Take-home pay only tells half the story. Illinois as a whole runs slightly below the national average cost of living, but Chicago itself is meaningfully more expensive than the rest of the state:
- 1-bedroom apartment, Chicago (avg): $1,800–2,500/month depending on neighborhood
- 1-bedroom apartment, outside Chicago metro (avg): $900–1,200/month
- Living wage (single adult, statewide avg): ~$44,000/year (MIT Living Wage Calculator)
- Minimum wage: $15.00/hour statewide ($31,200/year full-time); $16.20/hour in Chicago (effective July 2026)
How Your Salary Compares in Illinois
The median full-time salary in Illinois is approximately $65,300/year — close to the US national median. Median household income is meaningfully higher, at roughly $83,400/year, since many households have more than one earner. Here's the individual income distribution for Illinois workers:
| 25th percentile (bottom quarter) | $48,000 gross · $38,441 net |
| 50th percentile (median) | $65,300 gross · $51,370 net |
| 75th percentile (top quarter) | $95,000 gross · $70,516 net |
| 90th percentile (top 10%) | $135,000 gross · $96,643 net |
Because the state rate is flat, your effective state tax rate barely moves as income rises — it stays close to 4.7–4.9% at every level shown above, once the personal exemption is factored in. That's a meaningfully different curve than a graduated-bracket state, where effective rates climb steadily with income.
Top Industries Driving Illinois Pay
Illinois's economy is unusually concentrated around the Chicago metro area, which accounts for roughly three-quarters of the state's total wages despite being a fraction of its land area. The industries with the strongest median earnings statewide are finance, insurance, and real estate; public administration; and professional, scientific, and management services — reflecting Chicago's role as a major financial center (home to the Chicago Mercantile Exchange and numerous Fortune 500 headquarters). Outside the Chicago metro, manufacturing, logistics, and agriculture carry more weight in the state's economy, generally at lower median wages than the finance-heavy Chicago figures.
Pros and Cons of Illinois Tax for Employees
Pros
- Flat 4.95% rate — simple, predictable, no bracket creep as you earn more
- Retirement income (Social Security, pensions, 401(k)/IRA distributions) is fully exempt from Illinois state tax
- Tax reciprocity with four neighboring states simplifies cross-border work
Cons
- No graduated relief for lower earners — everyone pays the same rate
- Among the highest effective property tax rates in the US, which hits homeowners hard
- State has raised the flat rate three times since 2011, so "flat" doesn't mean "fixed forever"