Computer systems analyst salary in Illinois after taxes
The median computer systems analyst in Illinois earns $101,570 a year ($48.83 an hour). After 2026 taxes, that's about $75,402 a year, or $2,900.06 every two weeks.
Take-home pay at each pay level
| Pay level | Gross / year | Take-home / year | Per month | Every 2 weeks |
|---|---|---|---|---|
| 10th percentile | $60,770 | $48,145 | $4,012 | $1,851.74 |
| 25th percentile | $80,350 | $61,524 | $5,127 | $2,366.30 |
| Median | $101,570 | $75,402 | $6,283 | $2,900.06 |
| 75th percentile | $128,030 | $92,582 | $7,715 | $3,560.84 |
| 90th percentile | $144,790 | $103,208 | $8,601 | $3,969.52 |
The 10th percentile means 10% of computer systems analysts in Illinois earn less than this. New hires usually start near the 10th–25th percentile.
Your exact paycheck
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Computer systems analyst take-home pay in other states
Illinois ranks #18 of 20 of the states we cover for median computer systems analyst take-home pay.
| State | Median gross | Take-home / year |
|---|---|---|
| Washington | $129,410 | $97,923 |
| Massachusetts | $128,240 | $92,236 |
| California | $127,720 | $88,506 |
| New Jersey | $122,890 | $88,342 |
| Virginia | $120,840 | $87,707 |
| Wyoming | $109,780 | $86,060 |
| New Hampshire | $107,670 | $84,576 |
| Texas | $107,390 | $84,379 |
| Nevada | $104,060 | $82,036 |
| Florida | $101,900 | $80,517 |
| North Carolina | $106,850 | $80,151 |
| New York | $109,610 | $79,974 |
| South Dakota | $99,790 | $79,032 |
| Georgia | $106,240 | $79,017 |
| Ohio | $102,320 | $78,127 |
| Michigan | $103,410 | $77,435 |
| Tennessee | $95,630 | $76,106 |
| Illinois | $101,570 | $75,402 |
| Pennsylvania | $98,550 | $75,134 |
| Alaska | $88,520 | $71,104 |
Questions
How much does a computer systems analyst make in Illinois after taxes?
The median computer systems analyst in Illinois earns $101,570 a year ($48.83 an hour) before tax, according to BLS data for May 2025. After 2026 federal and state taxes that's about $75,402 a year, $6,283 a month or $2,900.06 every two weeks for a single filer with no pre-tax deductions.
How many computer systems analysts work in Illinois?
About 20,610, according to the BLS May 2025 estimates.
Wages: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS), May 2025, statewide, all industries. BLS wages include tips and commissions, not overtime premiums or benefits. Take-home uses 2026 tax rules for a single filer paid every two weeks with W-4 defaults and no pre-tax deductions.
Sources
- BLS Occupational Employment and Wage Statistics, May 2025 (state data)
- IRS Publication 15-T (2026), Worksheet 1A and Annual Percentage Method tables
- SSA: 2026 Social Security wage base ($184,500)
- Illinois Department of Revenue, IL-700-T (2026)
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