$90K a Year in Illinois: What You Take Home After Taxes
A single filer earning $90,000 in Illinois keeps $67,776 in 2026 — $5,648 a month, $2,607 per biweekly paycheck — after $11,025 of federal income tax, $6,885 of Social Security and Medicare, and $4,314 of Illinois state income tax. That is 24.7% in total tax, ranking Illinois #42 of 50 states at this salary.
How Illinois taxes $90,000, band by band
Illinois starts from $90,000 of income and subtracts its own standard deduction of $2,850, leaving $87,150 of state taxable income. Every dollar of that is taxed at the flat 4.95% rate. The state tax comes to $4,314 — an effective state rate of 4.8% against a marginal rate of 5.0% on the next dollar.
| Illinois bracket (single) | Rate | Your income in this band | Tax on this band |
|---|---|---|---|
| Over $0 | 4.95% | $87,150 | $4,314 |
| Total Illinois income tax | $87,150 | $4,314 | |
Deductions and credits in Illinois
Illinois has no standard deduction and no itemized deductions; the only universal subtraction is a personal exemption a little under $3,000 per taxpayer and dependent, plus $1,000 for filers 65 or older or blind, and it disappears above $250,000 of adjusted gross income single or $500,000 joint. Credits carry the weight: a state earned income credit worth 20% of the federal credit, a child credit for EITC recipients with children under 12, a 5% credit for property taxes on a principal residence, and a K-12 education expense credit of up to $750.
Local income taxes in Illinois
Illinois has no local income taxes. The Illinois Constitution bars home-rule units, including Chicago, from taxing income, earnings or occupations without General Assembly authorization, and none has been granted. Chicago instead leans on the nation's highest big-city sales tax, a 9% amusement tax, and utility and parking taxes. Suburban Cook County and the collar counties add nothing to paychecks.
The federal side of $90,000
Federal tax is the same in every state. After the $16,100 standard deduction, $90,000 becomes $73,900 of federal taxable income and owes $11,025 of income tax (12.3% effective). Social Security takes $5,580 and Medicare $1,305. Before any state tax, that leaves $72,090 — the figure a Illinois worker would keep by moving to Texas or Florida, $4,314 more than staying put.
| Gross salary | $90,000 |
| Federal income tax | −$11,025 |
| Social Security (6.2%) | −$5,580 |
| Medicare | −$1,305 |
| Illinois state tax | −$4,314 |
| Take-home pay | $67,776 |
Married filing jointly on $90,000 in Illinois
The same $90,000 of household income on a joint return keeps $72,502 in Illinois — $4,726 more than a single filer. Illinois uses the same brackets for joint and single filers, so the state-level marriage bonus comes only from the larger joint deduction; the federal side supplies most of the gap.
$90,000 in Illinois vs. nearby states
At this salary Illinois ranks #42 of 50. The best state, Alaska, leaves $72,090; the worst, Oregon, leaves $64,772. Against its Midwest neighbours:
| State | Take-home at $90K | vs. Illinois | Effective rate | Cost index |
|---|---|---|---|---|
| Illinois | $67,776 | — | 24.7% | 93 |
| South Dakota | $72,090 | +$4,314 | 19.9% | 92 |
| North Dakota | $71,594 | +$3,818 | 20.5% | 92 |
| Ohio | $70,331 | +$2,555 | 21.9% | 90 |
| Iowa | $69,282 | +$1,506 | 23.0% | 89 |
| Missouri | $68,870 | +$1,094 | 23.5% | 89 |
What $67,776 buys in Illinois
Illinois's cost-of-living index is 93 (7% below the national average), so $67,776 of take-home has the purchasing power of about $72,878 in an average-cost area. The 30% guideline caps rent at $2,250 a month on this salary. $90,000 is 38% above Illinois's median household income of $65,000, which itself nets $51,331 after tax. A $10,000 raise from here keeps $6,540 after federal and Illinois tax.
Who earns $90K in Illinois, and what to do with it
$90,000 is a typical salary for software developers outside the top tech hubs, physical therapists, pharmacists early in their careers, mid-career engineers, marketing managers at smaller companies, and nurses with specialty certifications. At $43.27 an hour it is about the 78th percentile of individual full-time earners and roughly 45% above the median worker.
A single filer at $90,000 has roughly $24,000 of income inside the 22% bracket — almost exactly the 401(k) contribution limit. Maxing the plan would erase the entire 22% slice and drop the marginal rate back to 12%, a rare case where the contribution limit and the bracket line up. Below that, the practical wins are an HSA (saves FICA too) and a hard look at state residency if the job is remote.
Retirees are Illinois' clearest winners: pensions, IRAs and Social Security are entirely untaxed. High W-2 earners do better than the 4.95% headline suggests next to Wisconsin (7.65% top) or Minnesota (9.85%), and there is no local tax in Chicago. Dual-income couples pay a flat rate with per-person exemptions, so marriage changes nothing. Remote workers owe 4.95% on all wages earned while living in Illinois; reciprocity with Iowa, Kentucky, Michigan and Wisconsin covers cross-border commuters. Homeowners lose: the property tax bill on a modest house often exceeds the state income tax.