On Tax LIVE – Bob Stack, formerly of the U.S. Treasury Department

Bob Stack is the former Managing Director of Deloitte’s Washington National Tax Practice, a role he held until his recent retirement. Prior to his work for Deloitte, Bob served as the Deputy Assistant Secretary for International Tax Affairs in the Office of Tax Policy at the U.S. Department of the Treasury. In this episode of On Tax, he and Cravath partner and host Len Teti discuss how an early love of French language and international travel inspired Bob’s path to tax law in front of a live audience of students, faculty and alumni at the University of Virginia School of Law. They also talk about Bob’s tenure at the Treasury Department and reflect on the role senior colleagues play in building knowledge and confidence for professionals across the tax world.

This episode of On Tax was published on June 9, 2026. A transcript of this episode is forthcoming.