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South Dakotaworking inMontana
Standard — file nonresident return if onsite
Montana
Work State Tax Rate
Up to 5.9% (2025), 5.65% (2026)
Withholding Starts
After 30 days
Law Last Updated
Jan 1, 2026
Employee Obligations (Which Returns YOU Must File)
Since South Dakota has no income tax, you won't face double taxation. However, if you physically work in Montana, you may owe Montana income tax (Up to 5.9% (2025), 5.65% (2026)) and need to file a nonresident Montana return.
Employer Obligations (What Your Employer Must Withhold & Remit)
Register for withholding and unemployment. Unemployment applies to the first $43,000 of wages.
Related guides
More from South Dakota · Cross-State Work
- South Dakota → New York
- South Dakota → Ohio
- South Dakota → Oklahoma
- South Dakota → Oregon
- South Dakota → Pennsylvania
Moving to Montana from elsewhere · Cross-State Work
Employee/Individual Tax Source: https://mtrevenue.gov/taxes/individual-income-tax/individual-filing-status/
Employer/Withholding Source: https://mtrevenue.gov/taxes/wage-withholding/withholding-payments/
Row last reviewed: Apr 17, 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.