Illinois charges a flat 4.95% income tax. No brackets, no phase-outs, no guessing. Enter your salary to see exactly what you keep.
Fills in a national-average starting salary — edit it below to match your offer.
Your estimated take-home pay
$1,615
per paycheck
$41,989 annually · Effective tax rate: 19.3%
Role salaries and the NABCEP premium are national-average estimates from industry salary data — actual pay varies by state, employer, and experience. Not tax advice.
Illinois is one of a handful of states that taxes every dollar of income at the same rate regardless of how much you earn. A teacher making $52,000 and a surgeon making $400,000 both pay 4.95% to Springfield. The simplicity is appealing on paper, but the practical effect is that lower earners carry a proportionally heavier burden than they would in a state with progressive brackets where the first $10,000 or $20,000 is taxed at near zero. If you are comparing an Illinois offer against one in a progressive-tax state, the flat rate might save you money at higher incomes but cost you at lower ones.
Illinois does not have a city income tax, but living in Chicago introduces costs that function the same way. Cook County's sales tax pushes the combined rate above 10% in most transactions, property taxes in the city and surrounding suburbs are among the highest in the nation, and the commuter who drives pays tolls on practically every highway. None of these show up in a paycheck calculator, but they all reduce the purchasing power of your take-home number. Downstate Illinois, by contrast, operates on a meaningfully lower cost basis while facing the same flat income tax rate, which is why the same $75,000 salary feels tight in Lincoln Park and comfortable in Springfield.