Ruth Mason joined the University of Virginia School of Law faculty in 2013. Her research, which has been cited by the Supreme Court, focuses on tax discrimination in the United States and the European Union. Mason teaches taxation, comparative tax law, and the International Tax Practicum.

Mason has been a visiting professor at Johannes Kepler University, Leiden University, Université Paris 1 (Panthéon Sorbonne), and Yale Law School. She was Fulbright Senior Scholar at Vienna University for Business Economics and Business Administration (WU Wien). Mason co-edits Kluwer’s Series on International Taxation, and she is a member of the editorial board of the World Tax Journal.

Prior to joining the Law School, Mason worked at the University of Connecticut School, New York University School of Law, and Willkie Farr & Gallagher.