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Freelance Tax Calculator — Illinois 2026

Estimate SE tax + federal + Illinois state income tax. Includes deductible half of SE tax.

📌 Illinois has a flat 4.95% state income tax rate.

📊 Your Illinois Tax Estimate

Annual Freelance Income ($)

Business Deductions ($)

Filing Status

Other W-2 Income ($)

SE Tax (15.3%)

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Federal Income Tax

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Illinois State Tax (4%)

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Total Tax Bill

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Effective Tax Rate
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Quarterly Payment

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💡 Set aside —/month for taxes. Also consider a SEP-IRA to reduce your taxable income — calculate your max contribution.

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TurboTax Self-Employed handles Schedule C and all SE deductions automatically.

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