Dr. Johannes Frey advises clients on all aspects of tax controversy and international tax planning. He represents many of the largest multinational companies through the full range of tax controversy proceedings, including audits, administrative appeals, multilateral controls and judicial proceedings.
Frey regularly handles complex and contentious audits and disputes for multinational clients that involve intellectual property, joint ventures, transfer pricing and permanent establishment matters. He advises corporate clients across many industries, with a particular focus on technology, health care and consumer products.
Lawdragon Honors
| Honor | Year | Practice |
|---|---|---|
| The 2026 Lawdragon 500 Leading Global Tax Lawyers | 2026 | International Tax, Planning, Controversy |
| The Inaugural Lawdragon 500 Leading Global Tax Lawyers | 2025 | International Tax, Planning, Controversy |
He has co-authored numerous articles on a wide range of international topics that have been published in leading tax journals, including the Tax Management International Journal, Tax Notes and Tax Notes International. He also served as adjunct professor for international taxation at the University of Lausanne.
Tax Controversy
Frey’s tax controversy practice focuses heavily on representing corporate taxpayers in pre-audit, audit, administrative appeal and litigation proceedings. He frequently resolves complex tax disputes and addresses cross-border discovery and evidentiary privilege issues.
Tax Planning
Frey has extensive experience in the planning and execution of complex cross-border transactions, with a focus on acquisitions, mergers, redomiciliations and joint ventures. He advises on tax matters for various multinational companies, including Amgen, Amazon.com, Apple, Biogen, BlackRock, Gilead, IBM Corporation, Intel, International Flavors and Fragrances, Netflix, Pfizer Inc., Nike, Inc. and The Coca-Cola Company.