Illinois Income Tax Calculator (2026)
Estimate your Illinois income tax — federal plus Illinois state income tax. Uses 2026 tax brackets and standard deductions.
Illinois Tax Note: Illinois has a flat state income tax with a top rate of 5.0%. State tax is included in the estimate below.
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401(k), HSA, Traditional IRA, health insurance
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Illinois Tax Estimate
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$75,000 single filer in Illinois (2026)
In Illinois, a $75,000 single filer pays federal income tax plus Illinois state income tax (flat rate). Social Security (6.2%) and Medicare (1.45%) apply on top.
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