Moments ago, the United States House of Representatives (House) passed the Mobile Workforce State Income Tax Simplification Act of 2015 (H.R. 2315) Mobile Workforce State Income Tax Simplification Act of 2015 (H.R. 2315) by voice vote. The Act will now be delivered to the United States Senate (Senate) for introduction and referral to committee for consideration. While the Senate Committee on Finance has not advanced a companion bill (S. 386) introduced by Senators John Thune (R-SD) and Sherrod Brown (D-OH) in February 2015, the bill currently touts 45 co-sponsors.

Background

The Mobile Workforce Act that passed today was introduced in May 2015 by Representatives Mike Bishop (R-MI) and Hank Johnson (D-GA). As highlighted in our prior coverage, the bill advanced out of the House Judiciary Committee in June 2015 by a vote 23-4. This legislation has been introduced in the House by each Congress since it was first introduced in 2006 by the 109th. While the legislation has seen some degree of success in the House, it has yet to advance beyond the Senate Committee on Finance. Notably, in May 2012, a prior version of the Act was passed in the House, but the Senate Committee on Finance did not take it up for consideration.

The Mobile Workforce Act

While the Mobile Workforce Act has been tweaked over the years, its underlying objective has largely remained the same—to providing a workable, national framework for the administration of, and compliance with, the states’ incongruent withholding and nonresident income tax payment laws. The version of the Act passed by the House today establishes a thirty-day safe harbor for traveling employees from nonresident state personal income taxes, and greatly reduces and simplifies the withholding and reporting burdens and related costs to their employers. Specifically, an employee working in a nonresident state for thirty or fewer days would not pay personal income tax to the nonresident state. Instead, the employee would remain fully taxable in its resident state on these earnings.

Under the Act, employers would not be required to withhold taxes in the nonresident state for employees whose travel falls at or below the thirty-day threshold in the state. In making this determination, the Act allows employers to rely on an employee’s annual determination of the time they will spend working in a state, absent fraud or collusion by the employee. The definition of “employee” has the same meaning given to it by the state in which the employment duties are performed, subject to only a few exceptions (including professional athletes, professional entertainers, and public figures who are persons of prominence who perform services for wages or other remuneration on a per-event basis).

As passed today, the “Act shall take effect on January 1 of the [second] year that begins after the date of the enactment of this Act” and retroactive application is expressly prohibited. Practically speaking, this means that the absolute earliest the Act could take effect is January 1, 2018 (assuming the Senate [...]

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