Illinois

Q: Employer Obligations (What Your Employer Must Withhold & Remit)

Register for withholding and unemployment. Unemployment applies to the first $13,590 of wages.

Work State Tax Rate

Flat 4.95%

Withholding Starts

After 30 days

Law Last Updated

No change 2025/2026

Employee Obligations (Which Returns YOU Must File)

Since Alaska has no income tax, you won't face double taxation. However, if you physically work in Illinois, you may owe Illinois income tax (Flat 4.95%) and need to file a nonresident Illinois return.

Employer Obligations (What Your Employer Must Withhold & Remit)

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Employee/Individual Tax Source: https://tax.illinois.gov/research/taxinformation/withholdingincometax.html

Employer/Withholding Source: https://tax.illinois.gov/research/publications/pubs/who-is-required-to-withhold-illinois-income-tax/withholding-illinois-income-tax-for-my-employees.html

Row last reviewed: May 9, 2026

This is general information, not tax or legal advice. Laws change frequently. Always consult a licensed CPA or tax attorney for your specific situation. All information researched as of March 21, 2026.