Illinois 路 2026 tax year State-specific estimate
Illinois levies a single flat income tax rate of 4.95% on all taxable income, offset by a personal exemption that phases out at higher incomes.
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Illinois estimate
Your estimate changes with filing status, Illinois rules, and the deductions you enter.
Quick answer Single filer estimate
Using the tax rules represented by this calculator, a single filer earning $75,000 in Illinois takes home about $58,025 per year, or $4,835 per month, before voluntary benefit deductions. Adjust the calculator for filing status and pre-tax benefits.
Illinois levies a single flat income tax rate of 4.95% on all taxable income, offset by a personal exemption that phases out at higher incomes.
Illinois applies a single flat income tax rate of 4.95% to taxable income. Unlike progressive states, the same rate applies whether you are an entry-level worker or a high earner, which makes the calculation straightforward.
Illinois grants a personal exemption of $2,925 per filer rather than a standard deduction. Pre-tax 401(k) contributions, HSA contributions, and employer health premiums reduce your Illinois taxable income.
Illinois grants a personal exemption ($2,925 single) that phases out entirely above $250,000 ($500,000 married).
Illinois is one of several states using a flat income tax rate. Compare your take-home pay across flat-tax states: Pennsylvania (3.07%), Georgia (4.99%), North Carolina (3.99%), Arizona (2.5%), Colorado (4.4%), Michigan (4.25%), Indiana (3.05%), Iowa (3.8%), Kentucky (3.5%), Utah (4.55%), Mississippi (4.7%), Idaho (5.8%).
This annual tax-liability estimate uses confirmed 2026 federal rules and Illinois state parameters from an earlier/current agency schedule that has not been independently confirmed as 2026. It is not an employer withholding calculation. See the full calculation methodology and limitations.
Data reviewed 2026-07-29. State rules without a confirmed rule year should be treated as provisional and checked with the linked agency.
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