Philip D. Morrison is a counsel in the law firm of McDermott Will & Emery LLP and is based in the Firm's Washington, D.C., office. He focuses his practice on international tax, including inbound and outbound planning, treaty issues, transfer pricing and controversy work.

Phil has over 30 years of experience as a tax lawyer. He recently retired as a principal at Deloitte Tax LLP where he led Deloitte's U.S. international tax quality control effort. In that position he provided tax planning and compliance advice to international tax practitioners, directed training on international tax issues and acted as a liaison with the federal government.

From 1989 to 1992, Phil served as the U.S. Department of the Treasury’s international tax counsel, the U.S. government’s chief legal advisor on international tax matters (including international tax legislation and regulations), chief negotiator of tax treaties and director of the Office of International Tax Counsel. He also represented the U.S. at the Organisation for Economic Co-operation and Development and at other multilateral tax fora. Earlier in his career, he served as counsel to the U.S. Senate Finance Committee.

Phil is a member of the Committee on U.S. Activities of Foreigners and Tax Treaties of the American Bar Association’s Tax Section, The Tax Council, the tax committee of the National Foreign Trade Council, the International Fiscal Association and a Washington-based international tax study group. He has regularly been selected as a leading tax advisor and a leading transfer pricing advisor for the International Tax Review and in Legal Media Group’s Expert Guides. He has spoken and published widely on various international tax subjects and is a regular contributor to the Tax Management International Journal’s “Leading Practitioner Commentary.”

Phil received his J.D. from Harvard Law School (with honors) and his A.B. (with high honors) from Princeton University.

Phil is admitted to practice in the District of Columbia.