H. David Rosenbloom is a Member in Caplin & Drysdale's Washington, D.C., office. He served as International Tax Counsel and Director of the Office of International Tax Affairs in the U.S. Treasury Department from 1977 to 1981. Mr. Rosenbloom has been recognized as a Senior Statesmen by Chambers USA since 2014 and listed among "Leading Lawyers" by The Legal 500 for his work with clients in International Tax and Tax Controversies.


Mr. Rosenbloom's major areas of practice include international tax planning and controversies, including transfer pricing and advance pricing agreements, the foreign tax credit and subpart F, tax treaty issues and competent authority proceedings, financial products and financial institutions, taxation of all forms of inbound investment, and individual tax compliance in a cross-border context.


Mr. Rosenbloom has served as a Tax Policy Advisor for the US Treasury, the OECD, US AID, the International Monetary Fund, and the World Bank in Eastern Europe and the Baltic countries, the former Soviet Union, Senegal, Malawi, and South Africa. He has consulted with and advised foreign governments and international organizations on international tax matters. Mr. Rosenbloom has served as an expert witness in international tax disputes in the United States, Canada, New Zealand, Norway, and Australia, and in arbitrations under bilateral investment treaties.

Mr. Rosenbloom has also written extensively on international and comparative tax topics. His most recent writings discuss the intersection of U.S. tax reform, U.S. tax treaty policy, and the OECD Project on Base Erosion and Profit Shifting.

Admissions & Education

Bar & Court Admissions
  • New York
  • District of Columbia
  • District of Columbia Court of Appeals
  • U.S. Bankruptcy Court, District of Columbia
  • U.S. District Court, District of Columbia
  • U.S. Supreme Court
  • U.S. Tax Court

J.D., Harvard Law School, 1966, magna cum laude, President, Harvard Law Review, Vol. 79

Fullbright, University of Florence, Florence, Italy, 1963

A.B., Princeton University, 1962, summa cum laude

Recognitions & Noteworthy

Honors & Recognitions

Chambers USA, 2008-2013; Senior Statesmen, 2014-Present

Chambers Global, 2009-2012; Senior Statesmen, 2016-2021

The Legal 500, Hall of Fame, 2018; Recommended, 2010-2014, 2017-Present; Leading Lawyer, 2013-Present

The Legal 500, Top-Tier Firm, Tax - US Taxes - Contentious, 2010, 2015-Present

The Legal 500, International Tax Team of the Year, 2014-2015

Best Lawyers in America, 1989-Present

Expert Guides' The Best of the Best, 2009, 2011-2013, 2015

Expert Guides' World's Leading Tax Advisers, 2012, 2014

Super Lawyers, Washington, D.C., 2008-Present

The Washingtonian, Top Lawyers in D.C., 2009, 2011-2012, and 2015

Martindale-Hubbell® AV® Preeminent™

ITR World Tax, Highly Regarded, Tax Controversy, 2020

Who's Who Legal, Corporate Tax, Recommended, 2018-Present; Thought Leader - Corporate Tax 2019-2020

Government Service

International Tax Counsel and Director, Office of International Tax Affairs, U.S. Department of Treasury, 1978-1981

Law Clerk, Honorable Abe Fortas, U.S. Supreme Court, 1967-1968

Assistant, Honorable Arthur Goldberg; U.S. Mission to the United Nations, 1966-1967

Professional Activities & Affiliations

Professional Activities
  • James S. Eustice Visiting Professor of Taxation and Director of International Tax Program, New York University School of Law
  • Lecturer on international taxation at Harvard, Stanford, the University of Pennsylvania, and Columbia Law Schools, and at universities in Sydney, Vienna, Melbourne, Milan, Padua, Bergamo, Bologna, Bari, Leiden, Mexico City, Mainz, Heidelberg, Neuchatel, Lisbon, and Rio de Janeiro
  • Instructed at the University of Pretoria, the Universita del Piemonte Orientale, the Max Planck Institute in Munich, Seoul National University, University of Amsterdam, the Public Finance Training Center in Taipei, and the OECD Multilateral Training Centres for Tax Offices from CIS and Eastern European Countries in Vienna, Ankara, and Budapest
Other Professional Affiliations

Member, International Fiscal Association
Member, U.S. Council for International Business
Member, Board of Directors, Tax Analysts

Newsroom & Publications

Speaking Engagements
Publications & Alerts
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