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ADB Altorfer Duss & Beilstein

Switzerland

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Key contacts
Partner : Pascal Taddei
Partner: Fabian Duss
Partner: Andreas Helbing
Quick facts
Number of advisers

23

Network memberships

2

Languages

German, English, French, Italian, Spanish

Key practice areas
General corporate tax
Indirect tax
Private client
Real estate
Tax
Tax controversy
Transactional tax
Transfer pricing
Firm overview

ADB Altorfer Duss & Beilstein is one of the leading tax law firms in Switzerland. Founded in 1954, we offer national and international clients comprehensive consultancy focusing on Swiss and international tax law.

From high net worth individuals to institutional investors. From the SME to the listed company. From incorporation through to succession planning. From the concept through to implementation and its reproduction in tax returns and tax assessments. We provide personal and individually tailored advice in relation to all aspects of life and business decisions with tax implications.

Our services are based on decades of professional experience and are characterised by recognised specialist expertise. With our avocational engagements as lecturers, specialist authors and judges we each provide our own additional contribution to the development of tax law.

Our strength lies in the interdisciplinary approach to tax law in our team of lawyers and economists. Our experienced team of tax experts carefully attends to your interests in all tax matters.

  • Tax structuring (domestic and cross-border)
  • Mergers and acquisitions/tax due diligence
  • Group financing and capital markets
  • Collective investment schemes
  • VAT advice and compliance, incl. customs
  • Transfer Pricing
  • Tax effective supply chain management
  • Individual tax/global mobility
  • Succession planning
  • Tax litigation and penal tax law
  • Tax compliance
  • Social security (domestic and cross-border)
  • Corporate, commercial and contract law

We serve Swiss and foreign clients related to Swiss and international tax and social security questions. In addition, we provide services in selected areas of Swiss business law (corporation law, commercial law, labor law, immigration law, inheritance law).

Connect with us
Key practice areas

Corporate tax matters

  • Cross-border project management
  • Restructuring
  • Cost-sharing arrangements
  • APAs
  • Transactions
  • M&A
  • Environmental
  • Financial services
  • Corporate taxes
  • Technology
  • Cryptocurrency
  • Value chains

Dispute resolution

  • Audit defence
  • Audit support
  • Dispute resolution
  • Pre-litigation
  • Litigation
  • Controversy management

Tax advisory

  • Tax consulting
  • International tax advisory

Indirect tax

  • VAT
  • Customs
  • Supply chains

Other 

  • Tax structuring (domestic and cross-border)
  • Tax due diligence
  • Group financing and capital markets
  • Collective investment schemes
  • Transfer Pricing
  • Tax effective supply chain management
  • Individual tax/global mobility
  • Succession planning
  • Tax compliance
  • Social security (domestic and cross-border)
  • Corporate, commercial and contract law
Sector expertise
  • Accounting
  • Agriculture
  • Automotive
  • Aviation
  • Banking
  • Construction and materials
  • Consumer goods and services
  • Energy
  • Financial services
  • Food and beverage
  • Forestry
  • Gaming
  • Government and public policy
  • Healthcare
  • Industrials
  • Insurance
  • Investment management
  • Media
  • Mining
  • Natural resources
  • Oil and gas
  • Pharma and life sciences
  • Real estate
  • Shipping
  • Social infrastructure
  • Tech and telecoms
  • Tourism
  • Transport
  • Utilities
  • Other
Address:
Walchestrasse 15
8006 Zurich
Tel:+41 44 267 63 00 Email:Contact Us Web Address:https://www.adb.ch/en/
2026 Edition
General corporate tax
Tier 3
29 firms ranked
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Tier 3

ADB Altorfer Duss & Beilstein
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MLL Meyerlustenberger Lachenal Froriep
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Tier 4

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Indirect tax
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Homburger
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Niederer Kraft Frey
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Baker McKenzie
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EY
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Lenz & Staehelin
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Oberson Abels
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PwC
7 practice areas
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Tier 3

ADB Altorfer Duss & Beilstein
8 practice areas
View full profile
Bär & Karrer
6 practice areas
View profile
Loyens & Loeff
5 practice areas
View full profile
Ludwig + Partner
4 practice areas
View full profile
VISCHER
4 practice areas
View profile
Wenger Plattner
5 practice areas
View full profile
Wenger Vieli
5 practice areas
View full profile
Private client
Tier 2
16 firms ranked
View full list

Tier 1

Bär & Karrer
6 practice areas
View profile
Homburger
6 practice areas
View profile
Lenz & Staehelin
5 practice areas
View profile
Niederer Kraft Frey
6 practice areas
View profile
Tax Partner
6 practice areas
View full profile

Tier 2

ADB Altorfer Duss & Beilstein
8 practice areas
View full profile
Deloitte
7 practice areas
View profile
MLL Meyerlustenberger Lachenal Froriep
4 practice areas
View profile
Schellenberg Wittmer
5 practice areas
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Wenger Vieli
5 practice areas
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Tier 3

Baker McKenzie
7 practice areas
View profile
MME Legal l Tax l Compliance
3 practice areas
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Riedweg & Partner
4 practice areas
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Walder Wyss
3 practice areas
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Wenger Plattner
5 practice areas
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ajooda AG
1 practice area
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Tax controversy
Tier 2
16 firms ranked
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Tier 1

Homburger
6 practice areas
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Lenz & Staehelin
5 practice areas
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Schellenberg Wittmer
5 practice areas
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Tax Partner
6 practice areas
View full profile

Tier 2

ADB Altorfer Duss & Beilstein
8 practice areas
View full profile
Baker McKenzie
7 practice areas
View profile
Bär & Karrer
6 practice areas
View profile
Deloitte
7 practice areas
View profile
MLL Meyerlustenberger Lachenal Froriep
4 practice areas
View profile
Oberson Abels
4 practice areas
View profile
Tappolet & Partner
3 practice areas
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Tier 3

Dietrich Baumgartner & Partner Attorneys
3 practice areas
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Pestalozzi
4 practice areas
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VISCHER
4 practice areas
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Wenger Vieli
5 practice areas
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Tier 4

Eptalex
1 practice area
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Transfer pricing
Tier 2
18 firms ranked
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Tier 1

Deloitte
7 practice areas
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EY
7 practice areas
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KPMG
7 practice areas
View profile
Loyens & Loeff
5 practice areas
View full profile
PwC
7 practice areas
View profile
Tax Partner
6 practice areas
View full profile

Tier 2

ADB Altorfer Duss & Beilstein
8 practice areas
View full profile
Baker McKenzie
7 practice areas
View profile
Bär & Karrer
6 practice areas
View profile
Homburger
6 practice areas
View profile

Tier 3

Ludwig + Partner
4 practice areas
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Pestalozzi
4 practice areas
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Questro International
3 practice areas
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Schellenberg Wittmer
5 practice areas
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Tax Expert International
3 practice areas
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Wenger Plattner
5 practice areas
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Tier 4

Aspect Advisory
3 practice areas
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Riedweg & Partner
4 practice areas
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Overview

ADB Altorfer Duss & Beilstein is recommended for its focus on tax advisory services. The tax team advises firms in various sectors such as FMCG, mining, technology, sports, and energy. Moreover, the team has extensive experience advising banks, asset managers, and family offices. Services cover all tax areas, including dispute resolution, VAT, and structuring. M&A specialist Pascal Taddei, indirect director Britta Rehfisch, and controversy practitioner Andreas Helbing are key contacts. Partner Jürg Altorfer is the incumbent transfer pricing specialist.  

The firm coordinated a litigation case on a tax neutrality ruling on share allocation income and devised a cross-border structure for an MNE. Transfer pricing compliance and benchmarking also featured during the research cycle.  

Tax specialist Alex Uschatz joined the firm from the University of Lucerne in May 2024 and outbound VAT practitioner Olivia Schwarz departed to Cevi Schweiz in September 2024. 

Client feedback

"Street-smart and pragmatic.’’ 

‘’Able to do crisp analysis and come up with relevant recommendations and actions in a swift and cost-effective manner"

Linked Reviews
Tax

Altorfer Duss & Beilstein is recommended for its established focus on tax advisory services. The tax team advises firms in various sectors, such as FMCG, mining, technology, sports, and energy. Moreover, the team has extensive experience advising banks, asset managers, and family offices. Services cover all tax areas, including dispute resolution, VAT, and structuring. M&A specialist Pascal Taddei, indirect director Britta Rehfisch, and controversy practitioner Andreas Helbing are key contacts.

The firm coordinated an asset relocation pending tax residency relocation. It also created Special Purpose Vehicles in cross-border context. Separate transfer pricing engagements included benchmarking.

Client feedback

“ADB is pragmatic and street smart in their approach. They are able to think commercially and provide concrete and tangible advises without too much ifs and buts.”

“Street smart and constructive in their approach. Always looking for the solution rather than reiterating on the problem/issue.”

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