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Mississippiworking inIllinois
Standard — file nonresident return if onsite
Illinois
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)
If you physically work in Illinois, file a nonresident Illinois return (tax rate: Flat 4.95%). Then file your Mississippi return and claim the Schedule S credit so you don't get taxed twice on the same income.
Employer Obligations (What Your Employer Must Withhold & Remit)
Register for withholding and unemployment. Unemployment applies to the first $13,590 of wages.
Related guides
More from Mississippi · Cross-State Work
- Mississippi → New Jersey
- Mississippi → New Mexico
- Mississippi → Nevada
- Mississippi → New York
- Mississippi → Ohio
Moving to Illinois from elsewhere · Cross-State Work
Employee/Individual Tax Source: https://tax.illinois.gov/research/taxinformation/withholdingincometax.html
Row last reviewed: May 9, 2026Home state credit form: Schedule S
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.