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Walder Wyss Ltd.

Stephan Neidhardt

Stephan Neidhardt



  • Insolvency & Restructuring
  • Mergers & Acquisitions
  • Private Clients
  • Private Equity & Venture Capital

WSG Practice Industries


Walder Wyss Ltd.

WSG Leadership

WSG Regional Council
Past Member
DealMaker Group
WSG in Europe Group
WSG Main Group
WSG Ski Forum Group
Group Leader
ABA Group
IBA Group
Tax Group
WSG Coronavirus Task Force Group
Stephan Neidhardt is a partner in the Tax Group. He co-chairs the Private Clients team with a focus on offering domestic and international tax law advice for entrepreneurs, their related companies, executives and high net worth individuals. Mr. Neidhardt also assists clients with corporate tax law issues, including mergers and acquisitions and structuring of domestic and international groups. In the field of Private Clients, he specializes in individual taxation issues related to the clients’ business operations, while also offering estate tax planning expertise.

Mr. Neidhardt is a member of the Tax Chapter Board of the Swiss-American Chamber of Commerce, the Legal and Tax Group of the Latin-American Chamber of Commerce in Switzerland and the working group on Competitive Tax Policy in the Canton of Zurich.

Born in 1959, Mr. Neidhardt attended the University St. Gallen, graduating in 1986 (lic. iur. HSG). He obtained a Master of Laws in Tax at the University of San Diego (USA) (LL.M. Tax 1996). Since 1994, he has held the designation of certified tax expert. Prior to joining Walder Wyss, Mr. Neidhardt worked as a tax lawyer for law firms located in Zurich and Atlanta (USA) and was previously a tax partner and head of the tax law department at another Zurich law firm. In the beginning of 2012 Stephan Neidhardt worked temporarily in two law firms in Santiago de Chile and Bogotá, Colombia. Since 2011 Stephan Neidhardt has served as an associate judge with the Swiss Equestrian Federation.

Mr. Neidhardt is fluent in German, English and Spanish. He is a member of the Zurich bar and admitted to practice in all Swiss courts.

Bar Admissions

He is registered with the Zurich Bar Registry and admitted to practice in all Switzerland.
Areas of Practice

Insolvency & Restructuring | Mergers & Acquisitions | Private Clients | Private Equity & Venture Capital | Private Equity & Venture Capital | Private Equity & Venture Capital | Real Estate | Tax


Lump sum taxation in Switzerland
Authors: Stephan Neidhardt and Robert Desax
5 December 2017

Nachfolgeplanung für Unternehmer
Speakers: Christine Glättli, Ayesha Curmally, Stephan Neidhardt and Kinga M. Weiss
Private Clients Breakfast
Zurich 1 July 2015

Inheritance and Estate Tax Switzerland
co-authored by Kinga M. Weiss and Stephan Neidhardt
in: "Lawyer Monthly" April 2013, pp. 116–117

Vorsorgeauftrag und grenzüberschreitende Erbfälle zwischen der EU und der Schweiz
Speakers: Marcus Desax, Stephan Neidhardt and Kinga M. Weiss
Private Clients Breakfast
Zurich 7 February 2013

Nachfolgeregelung für Familienunternehmen
Speakers: Kinga M. Weiss, Urs P. Gnos, Marco Strahm and Stephan Neidhardt
Erbrecht für Praktiker – Intensivseminar für Fortgeschrittene (Teil 1)
SIX ConventionPoint Zurich 4 November 2011

Immobilien und Steuern bei der Nachlassplanung und im Erbfall
Speakers: Stephan Neidhardt and Tina Shih-Thurnheer
St. Galler Erbrechtstag
Zurich 12 November 2010

In need of Substance - Switzerland
Speaker: Stephan Neidhardt
ITSG Conference Boston
Boston 20 September 2010

Special Features within the Swiss Tax System
Speaker: Stephan Neidhardt
Roadshow – The Ruchelman Law Firm
New York 9 March 2010

European Holding Company Structures 2010 (Switzerland Chapter)
by Stephan Neidhardt
in: "Tax Strategies for Corporate Acquisitions, Dispositions, Spin-Offs, Joint Ventures, Financings, Reorganizations & Restructurings"
USA 2010

European Holding Regimes 2010, Switzerland
by Stephan Neidhardt
in: Dr. Friedrich E. F. Hey (Editor[s]), "Annual Publication by Debevoise & Plimpton LLP"
Frankfurt 2010

Newsletter 90: Swiss Tax Amnesty
by Stephan Neidhardt and Tina Shih-Thurnheer
December 2009

The Doom of Offshore Tax Planning: What threats do US reforms and OECD resolutions pose to global foreign direct investment?
Speaker: Stephan Neidhardt
WSG panel discussion
Costa Rica November 2009

Your Company in Switzerland or Europe
Speaker: Stephan Neidhardt
Presentations and panel discussions in Latin America
Bógota/Medellin/Santiago de Chile/Buenos Air November 2009

Vermögens- und Steuerplanung mittels Immobilien
Speakers: Stephan Neidhardt and Tina Shih-Thurnheer
Zurich 12 June 2009

Newsletter 83: Revised Swiss Guideline under the Wealth Tax for the Valuation of Securities without Market Prices
by Stephan Neidhardt
March 2009

Cross-Border Relocation of Companies – Switzerland
Speaker: Stephan Neidhardt
IBA Tax Committee
Buenos Aires October 2008

Tax Planning with Derivatives in Switzerland
Speaker: Stephan Neidhardt
ITSG (International Tax Services Group)
Milan October 2008

The Swiss Tax System
Speaker: Stephan Neidhardt
ITSG (International Tax Services Group)
Toronto November 2007

Ensuring Treaty Eligibility: Navigating «Limitation on Benefits» and similar Anti-Shopping-Provisions
Speaker: Stephan Neidhardt
ABA Tax Section Meeting
Washington DC May 2007

What Tax Payers Need To Know About Swiss Holding Companies
by Stephan Neidhardt
in: "Tax Notes International" 17 July 2006, p. 225

Kontroverse um US-Nachlasssteuerpflicht
co-authored by Stephan Neidhardt
in: "Neue Zürcher Zeitung (NZZ)" 27 February 2006

Kommentar zu Art. 34–37 Stempelsteuergesetz
co-authored by Stephan Neidhardt
Zurich 2006

Unternehmensnachfolge als existentielle Herausforderung
co-authored by Stephan Neidhardt
in: "Hitz & Partner, Corporate Finance"
Zurich 2005

E.U. Savings Directive almost stalled by Switzerland's Demands
by Stephan Neidhardt
in: "The European Lawyer" June 2004, p. 11

Auf zu neuen Ufern, Lex Dossier: Steuerrecht-Mitarbeiteroptionen
by Stephan Neidhardt
in: "Handelszeitung" 29 January 2003

Gewerbsmässiger Weinhandel
co-authored by Stephan Neidhardt and Dr. Markus Oehrli
in: "Der Schweizer Treuhänder" 2003, p. 187 (Band III)

WSG's members are independent firms and are not affiliated in the joint practice of professional services. Each member exercises its own individual judgments on all client matters.

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