Mobile Workforce State Income Tax Simplification Act of 2025

# Mobile Workforce State Income Tax Simplification Act of 2025 – Summary **What the Bill Would Do** This bill aims to simplify how states tax income earned by workers who travel between states for their jobs. Currently, employees who work in multiple states may face complicated tax situations where they owe income tax to several states simultaneously. The bill would establish federal rules to reduce this burden by limiting when states can tax workers' income based on where they work versus where they live. **Who It Affects and Key Provisions** The bill primarily affects mobile workers—including traveling salespersons, consultants, athletes, entertainers, and remote workers who split time between states—as well as their employers.

By creating uniform federal standards, the bill would prevent workers from being taxed on the same income by multiple states, which can lead to double-taxation and complicated tax filings. The specific provisions limiting state tax authority have not been detailed in available summaries, but the general intent is to clarify and simplify interstate tax obligations. **Current Status** The bill was introduced in the 119th Congress by Senator John Thune (R-SD) and is currently in committee. This means it has not yet been debated or voted on by the full Senate, and its prospects for passage remain uncertain.