Illinois Flat Tax Rate
Unlike progressive tax states, Illinois uses a flat income tax rate of 4.95%. This makes paystub calculations straightforward — every dollar you earn above the standard deduction is taxed at the same rate.
Unlike progressive tax states, Illinois uses a flat income tax rate of 4.95%. This makes paystub calculations straightforward — every dollar you earn above the standard deduction is taxed at the same rate.
As the third-largest city in the US, Chicago is home to major employers across finance (CME Group), healthcare (Northwestern), and logistics (the busiest rail hub in North America).
No, Illinois has a flat income tax rate of 4.95% on all income. This is different from states like California or New York that have graduated tax brackets.
Standard deductions include Federal Income Tax, Illinois State Tax (4.95%), Social Security (6.2%), and Medicare (1.45%).