Illinois charges 4.95% flat state income tax. Use the cost of living calculator pre-loaded with Illinois rates.
Open Cost of Living Calculator →Illinois's cost of living index is 93, and the flat 4.95% state tax further affects how far your dollar goes. Near-average living costs mean the state tax rate is the primary differentiator when comparing Illinois to other states. This calculator factors in both taxes and cost of living for Illinois.
Illinois levies a flat 4.95% state income tax on all taxable income regardless of how much you earn. This makes tax planning straightforward: for every additional dollar you earn, 4.95 cents goes to Illinois. Illinois does not impose local income taxes, so the 4.95% flat rate is the only state-level income tax you owe.
The table below shows what you actually keep at five salary levels in Illinois, accounting for federal tax, FICA, and Illinois's flat 4.95% state tax.
See how Illinois compares to other Midwest states. Each link takes you to the cost of living calculator landing page for that state.
For a comprehensive breakdown of Illinois’s tax structure, salary comparisons, cost-of-living analysis, and more, visit the full Illinois take-home pay page.