
About
Provided by ADB Altorfer Duss & Beilstein AG
We provide personal and individually tailored advice in relation to all aspects of life and business decisions with tax implications.
ADB will act as your partner in all areas of national and international tax law and in bordering issues of business law. The main focus of our work lies in the following activities:
- Analysis of the tax situation (chances and risks; health checks)
- Tax planning (concept elaboration including legal implementation)
- Tax ruling requests; negotiations with the tax authorities
- Expert opinions (including second opinions)
- Assistance in tax audits
- Representation in tax appeals
- Compliance (tax returns etc.)
- Value-added tax (VAT) advice and compliance
- Consulting in cross-border situations
Tax services for companies
We advise our clients, which originate from various sectors, regarding national and international corporate tax law (corporate income and capital taxes, withholding tax, issuance stamp tax and securities transfer tax). Moreover, our services include advice in relation to value-added tax and customs duties. If desired, we will not only prepare tax concepts made to measure for your company, but will also ensure the legal implementation and attend to their operational execution.
Tax services for private individuals
We advise private individuals in all areas of national and international tax law, the law on social security contributions and legal issues arising in the context of tax planning.
Chambers Review
ADB Altorfer Duss & Beilstein advises clients on both contentious and non-contentious tax matters. The law firm has experience representing clients in disputes concerning dividends and VAT. In addition, it assists clients with mutual agreement procedures, double tax treaties and disclosure matters. Team members also act for clients on the tax consequences of corporate transactions.
Work Highlights
- ADB represented Swiss Re in a dispute with the Swiss tax authorities concerning the tax treatment of gains and losses made from sales of its shares.
Strengths
Provided by Chambers
"I rate the team very highly."
"The lawyers are prepared to go the extra mile."
"I rate the team very highly."
"The lawyers are prepared to go the extra mile."
Notable Practitioners

Andreas Helbing has a broad tax practice, assisting clients with cross-border matters such as double tax treaties, mutual agreement procedures and self-disclosure. In addition, Helbing advises clients on the tax treatment of R&D funding.

Fabian Duss represents clients in disputes with the Swiss tax authorities and assists with the taxation of dividends. He also acts on the tax consequences of corporate transactions.
"Fabian Duss did a very good job while working for me."

Pascal Taddei advises clients on contentious tax matters, including disputes relating to VAT, as well as on the tax aspects of corporate transactions.
"He is one of the brightest minds in his field and has a great temperament."
Ranked Lawyers at
ADB Altorfer Duss & Beilstein AG
Switzerland



Members
Provided by ADB Altorfer Duss & Beilstein AG
Britta Rehfisch
Fabian Streule
Helen Spiegel
Jürg Altorfer
Manuel Dubach
Marc Dietschi
Marco Buchmann
Marco Greter
Mathias Häni
Michael Felber
Olivia Schwarz
Patrick Balz
Roger Riger
Sylvie Futo
Theodor A.J. Ambauen
Urs Zeltner
Yannick Scheitlin
Clients
Provided by ADB Altorfer Duss & Beilstein AG
Castle Alternative and Castle Private Equity
Kuoni und Hugentobler-Stiftung
Zürcher Kantonalbank
Industries
Provided by ADB Altorfer Duss & Beilstein AG
Aerospace & Defence
Automobiles & Parts
Banks
Charities/Not for Profit
Chemicals
Commercial & Professional Services
Construction & Materials
Energy
Financial Services
Food & Drinks Producers
Health Care
Industrial Engineering
Insurance
Media
Mining & Metals
Pharmaceuticals & Life Sciences
Private Clients/Individuals
Real Estate
Retail
Software & Computer Services
Technology/Hardware & Electronics
Telecommunications
Travel & Leisure
Utilities