Illinois Paycheck Calculator
Estimate your 2026 take-home pay in Illinois after federal income tax, Social Security, Medicare, and Illinois state income tax.
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How Illinois paychecks are taxed in 2026
Illinois levies a flat 4.95% state income tax for 2026, applied after the state allowance/deduction for your filing status. This calculator applies that on top of federal withholding and Social Security / Medicare to estimate your Illinois take-home pay.
Adjust your filing status, pay frequency, and gross wage above to update the breakdown.
What this estimate doesn't include: Estimate assumes 1 personal exemption allowance ($2,925) for single/head of household and 2 for married filing jointly. The exemption fully phases out above $250,000 (single) / $500,000 (MFJ) — not modeled.
Estimates for general guidance only — not tax advice. This calculator approximates withholding using 2026 federal brackets, the standard deduction, and FICA. It does not account for pre-tax deductions (401(k), HSA, health premiums), additional W-4 adjustments, local taxes, or credits. Verify with a tax professional or the IRS.