$70K a Year in Illinois: What You Take Home After Taxes

Illinois starts from $70,000 of income and subtracts its own standard deduction of $2,850, leaving $67,150 of state taxable income. Every dollar of that is taxed at the flat 4.95% rate. The state tax comes to $3,324 — an effective state rate of 4.7% against a marginal rate of 5.0% on the next dollar.

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.

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.

Federal tax is the same in every state. After the $16,100 standard deduction, $70,000 becomes $53,900 of federal taxable income and owes $6,625 of income tax (9.5% effective). Social Security takes $4,340 and Medicare $1,015. Before any state tax, that leaves $58,020 — the figure a Illinois worker would keep by moving to Texas or Florida, $3,324 more than staying put.

The same $70,000 of household income on a joint return keeps $57,422 in Illinois — $2,726 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.

At this salary Illinois ranks #46 of 50. The best state, Alaska, leaves $58,020; the worst, Oregon, leaves $52,452. Against its Midwest neighbours:

Illinois's cost-of-living index is 93 (7% below the national average), so $54,696 of take-home has the purchasing power of about $58,813 in an average-cost area. The 30% guideline caps rent at $1,750 a month on this salary. $70,000 is 8% 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.

$70,000 is a common salary for accountants, registered nurses, project coordinators, HR specialists, cybersecurity analysts early in their careers and unionized skilled trades. It is $33.65 an hour and sits above the median full-time worker, at roughly the 60th percentile of individual earners. A single $70,000 earner is close to the national median household income on one paycheck.

$70,000 is the first of these salary levels where a single filer's last dollars are taxed at 22% federally — only a few thousand of them, but enough that a traditional 401(k) or HSA contribution now saves more than a Roth contribution costs. The more valuable decision is where to live: state and local taxes swing take-home by more than $3,500 between the best and worst state, and cost of living can swing purchasing power by far more than the tax difference.

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.