Mobile Workforce State Income Tax Simplification Act of 2025
Analysis under review: This bill has generated analysis that may be too generic or incomplete. Clause-level evidence remains available below.
Summary
What This Bill Does
This bill creates a uniform 30-day rule for state income taxes on mobile workers. Currently, employees who travel to other states for work face a patchwork of different state tax rules. Under this bill, states can only tax non-resident workers if they spend more than 30 days working in that state during a calendar year.
Who Benefits and How
Employees who travel for work (consultants, salespeople, technicians, athletes, entertainers) benefit from simplified tax filing, as they only need to file returns in states where they work more than 30 days. Employers benefit from reduced compliance costs and clearer withholding rules - they can rely on employee certifications about expected work locations rather than tracking every day. Multi-state businesses see reduced administrative burden.
Who Bears the Burden and How
State governments lose tax revenue from mobile workers who spend fewer than 30 days in their state. States with major business hubs, convention centers, or sports venues may see the largest revenue impacts. State tax administrators must adjust their systems to implement the new threshold.
Key Provisions
- Establishes 30-day threshold before non-resident state income tax applies
- Employers can rely on employee annual certifications for withholding decisions
- Creates safe harbor for employers from penalties when relying on employee determinations
- Takes effect January 1 of second calendar year after enactment
Evidence Chain:
This summary is generated from the full bill text using AI analysis. Expand "Detailed Analysis" below for identified beneficiaries/burden bearers.
At a Glance
What This Bill Does
Simplifies state income tax obligations for employees who work in multiple states by establishing a 30-day threshold before a non-resident state can impose income tax
Key Policy Areas
Taxation, Employment, Interstate Commerce
Primary Purpose
Simplifies state income tax obligations for employees who work in multiple states by establishing a 30-day threshold before a non-resident state can impose income tax
Policy Domains
Mobile Workforce Tax Rules
Identified Gains
Contextual inference, no direct clause citation- Mobile workers (traveling employees)
- Multi-state employers
- Consulting and professional services firms
- Technology companies with remote workers
- Sports teams and entertainment industry
Contextual inference, no direct clause citation
Identified Costs
Contextual inference, no direct clause citation- State tax authorities
- States with major business/convention centers
Contextual inference, no direct clause citation
Sponsors
Legislative Progress
In CommitteeMr. Thune (for himself and Ms. Cortez Masto) introduced the …
Read twice and referred to the Committee on Finance. (text: …
Introduced in Senate
Stakeholder Effects
cui bono?How this legislation distributes effects. Mention counts reflect frequency, not effect magnitude.
Professional services firms with consultants
Sports teams and entertainment companies
Bill Structure & Actor Mappings
Who is "The Secretary" in each section?
- "employee"
- → Any worker who performs employment duties in more than one state
- "employer"
- → Any entity that employs workers who perform duties in multiple states
Key Definitions
Terms defined in this bill
Physical presence in a state while performing work duties; presence for personal reasons while not performing duties does not count
Includes the District of Columbia but not US territories or possessions
An employer system that tracks where employees perform duties on a daily basis
We use a combination of our own taxonomy and classification in addition to large language models to assess meaning and potential beneficiaries. High confidence means strong textual evidence. Always verify with the original bill text.
Learn more about our methodology