About us
Jonathan Tiegerman
Managing Director
Since beginning his career over 17 years ago in New York City, Jonathan has worked for multinational companies and Big 4 accounting firms. Prior to founding the firm, Jonathan led the tax functions for a global asset manager and for a multinational reinsurance company. Living in Switzerland for nearly 10 years, he possesses a unique perspective on international tax matters involving U.S. and European businesses and wealthy families having a U.S. nexus.
An expert in international taxation, Jonathan is specialized in advising upon matters germane to investment funds, reinsurance companies, and startup businesses. He also has extensive experience in tax structuring for mergers, acquisitions, restructurings, and cross-border financing arrangements.
He has broad knowledge of tax treaty provisions relevant to withholding tax issues, business expansions (including permanent establishment risks), and global mobility issues (relocation of employees). Additionally, Jonathan advises upon transfer pricing aspects of intercompany arrangements related to international supply chains (e.g., services, financing, and licensing).
An avid smoker of meat and fish, he enjoys cooking American style barbecue in his free time. He currently resides in Wädenswil with his wife, two kids and dog. An enthusiastic American football fan, he welcomes all clients to watch a game with him.
Education
LL.M. in Taxation, New York University School of Law, 2010
M.B.A., Hofstra University School of Business, cum laude, 2008
J.D., Hofstra University School of Law, cum laude, 2006
B.A. in Psychology, Binghamton University, cum laude, 2003
Bar Admission
Texas - Active
New York - Inactive
Large firms have the expertise to provide sound tax advice. However, they lack the practical experience to implement and maintain the integrity of these arrangements over time.
Our team of professionals has first-class experience working at large firms and multinational businesses.
Our experience allows us to understand the importance of sophisticated solutions, which are practical for our clients' businesses and reasonable to maintain. We look forward to partnering with you to devise solutions for your business.
Neal Weiss
Senior Tax Manager
Neal started his career a decade ago with the KPMG global mobility team based in his hometown of Montreal, Canada. There he gained valuable insight into the intricacies of tax treaties, cross-border issues, and international taxation.
Since moving to Switzerland in 2016, he has expanded on his previous experience in order to offer a wide range of U.S. tax compliance reporting and tax advisory services.
Neal tends to focus on serving individual clients with privately-held entities, individuals seeking pre-immigration planning advice prior to relocating to the U.S., and assisting clients in the passport renunciation process.
When he is not discussing tax matters, you are likely to find him riding his road bike over the Swiss alps. With his racing days behind him, he moves a lot slower, but it leaves him more time to enjoy the views. Neal makes it a goal to reaffirm the friendly Canadian stereotype and is always happy to meet with clients and strike up a conversation.
Education
Certified Acceptance Agent, Internal Revenue Service, 2021
U.S. Enrolled Agent, Internal Revenue Service, 2017
BCom in Accounting, McGill University, 2013
Anvesh Panikar
Tax Manager
Anvesh joined Tiegerman Tax & Advisory in 2024, bringing expertise and experience as a seasoned US Individual Tax Manager. With over 12 years of professional experience, Anvesh specializes in US individual tax compliance matters and is a member of our private client services team.
Anvesh is an IRS Enrolled Agent and is licensed to represent clients before the Internal Revenue Service. His specialization lies in the preparation and review of US tax returns for expatriates and inpatriates, particularly those working for international companies.
Before joining the firm, Anvesh spent ten years with a Big 4 firm, where he served as an account owner and a global coordinator for clients ensuring the delivery of tax services.
Originally from India, Anvesh relocated to Germany in 2022 with his family. Anvesh is a nature loving person who loves to travel, especially to serene nature spots and is a big foodie. In his leisure time, Anvesh enjoys watching and playing cricket and football and otherwise can be seen spending his evenings with his family.