On a $100K salary, Massachusetts keeps you $50 more than Illinois.
Massachusetts
$74,400
take-home on $100K
Top rate: 5.0%
Illinois
$74,350
take-home on $100K
Top rate: 4.95%
State Tax Rate
5.0%
Massachusetts
Annual Savings on $100K
$50
Massachusetts advantage
State Tax Rate
4.95%
Illinois
Single filer, standard deduction, no other adjustments.
| Gross Salary | Massachusetts Take-Home | Illinois Take-Home | Massachusetts Saves |
|---|---|---|---|
| $40K | $32,540(18.6%) | $32,460(18.8%) | +$80/yr |
| $50K | $40,075(19.9%) | $40,000(20.0%) | +$75/yr |
| $60K | $47,610(20.6%) | $47,540(20.8%) | +$70/yr |
| $75K | $58,063(22.6%) | $58,000(22.7%) | +$62/yr |
| $100K | $74,400(25.6%) | $74,350(25.6%) | +$50/yr |
| $125K | $90,674(27.5%) | $90,636(27.5%) | +$37/yr |
| $150K | $106,511(29.0%) | $106,486(29.0%) | +$25/yr |
| $200K | $139,147(30.4%) | $139,147(30.4%) | +$0/yr |
2026 IRS brackets · FICA included · State tax estimated · Numbers rounded
| Massachusetts — $100K Salary | |
|---|---|
| Federal Income Tax | −$13,170 |
| Massachusetts State Tax | −$4,780 |
| Social Security (6.2%) | −$6,200 |
| Medicare (1.45%) | −$1,450 |
| Total Tax | −$25,600 |
| Annual Take-Home | $74,400 |
| Illinois — $100K Salary | |
|---|---|
| Federal Income Tax | −$13,170 |
| Illinois State Tax | −$4,830 |
| Social Security (6.2%) | −$6,200 |
| Medicare (1.45%) | −$1,450 |
| Total Tax | −$25,650 |
| Annual Take-Home | $74,350 |
Massachusetts has lower income taxes than Illinois. On a $100,000 salary (2026), Massachusetts residents take home $50 more per year. Massachusetts top state rate: 5.0%; Illinois: 4.95%. At $200K the gap grows to $0/year.
Massachusetts top state income tax rate: 5.0%. Illinois top rate: 4.95%. Both states also have the same federal income tax rates and FICA (Social Security + Medicare) taxes.
Moving from Illinois to Massachusetts could save you $50/year on a $100K salary — that's $4/month. Over 10 years, that's potentially $500 in tax savings, not accounting for raises or investment growth. However, cost of living differences (housing, property taxes, sales tax) should also factor in.
Income tax is only part of the picture. Be sure to also compare sales tax, property taxes, and cost of living. This tool focuses on state income tax differences. For a complete picture, research each state's total tax burden.
At $200,000 gross salary, Massachusetts take-home is $139,147 vs $139,147 in Illinois — a difference of $0 per year. The gap widens significantly at higher incomes due to progressive tax brackets.
All figures are for a single filer using the standard deduction with no other adjustments (no 401k, no pre-tax benefits). Federal income tax, Social Security (6.2% up to $176,100), and Medicare (1.45%) are the same in both states. The difference is entirely due to state income tax: Massachusetts charges up to 5.0% vs Illinois charges up to 4.95%.
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Add 401k, health insurance, filing status, and more for a precise number.