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Quick facts
Number of lawyers

25

Network memberships

ALFA International; SCG Legal; IBLC; Association of European Lawyers; UIA; WIRAS Verbund

Languages

English, French, German, Italian, Spanish, Luxembourgish

Key practice areas
General corporate tax
Indirect tax
Tax
Tax controversy
Transactional tax
Firm overview

Located in the heart of one of the world’s main financial centers, DSM provides its national and international clientele multidisciplinary, multilingual services suited to Luxembourg’s current environment. DSM’s lawyers are recognized experts in numerous legal practice areas such as corporate, finance and tax law, as well as in dispute resolution.

Key contacts

Managing Partner – Avocat à la Cour
Head of Real Estate and Head of Tax
Mario DI STEFANO
mdistefano@dsm.legal

Partner Tax – Avocat à la Cour
Dr. Alex PHAM, Ph.D.
apham@dsm.legal

 

Key practice areas
  • Compliance Management
  • Corporate tax matters
  • Dispute resolution
  • Tax advisory
  • Indirect tax
Sector expertise
  • Accounting
  • Banking
  • Construction and Materials
  • Consumer Goods and Services
  • Energy
  • Financial Services
  • Healthcare
  • Industrials
  • Insurance
  • Investment Management
  • Media
  • Oil and Gas
  • Pharma and Life Sciences
  • Real Estate
  • Tech and Telecoms
  • Transport
Client feedback

WorldTax

Very good work, responsiveness of the team, availability.

Alex never missed a deadline and is always reachable to address any ad-hoc questions and client concerns.

Address:
55A, rue de Merl
L-2146
Tel:+352 262 562 1 Fax:+352 262 562 2 Email:Contact Us Web Address:https://www.dsm.legal/en/
2026 Edition
General corporate tax
Tier 2
32 firms ranked
View full list

Tier 1

A&O Shearman
6 practice areas
View profile
ATOZ Tax Advisers Luxembourg
4 practice areas
View full profile
Arendt & Medernach
6 practice areas
View full profile
Deloitte
7 practice areas
View full profile
EY
7 practice areas
View profile
KPMG
7 practice areas
View full profile
Loyens & Loeff
6 practice areas
View full profile
PwC
7 practice areas
View profile
TS&P
4 practice areas
View full profile

Tier 2

Baker McKenzie
6 practice areas
View profile
Bonn Steichen & Partners
5 practice areas
View profile
Clifford Chance
7 practice areas
View profile
DLA Piper
5 practice areas
View profile
DSM Avocats à la Cour
5 practice areas
View full profile
Dentons
5 practice areas
View profile
Elvinger Hoss Prussen
5 practice areas
View profile
Linklaters
4 practice areas
View profile
NautaDutilh
4 practice areas
View profile
Norton Rose Fulbright
6 practice areas
View profile
Stibbe
3 practice areas
View full profile

Tier 3

Bonn & Schmitt
3 practice areas
View profile
Clément Konrad & Partners
6 practice areas
View profile
Dupont Partners
6 practice areas
View profile
GSK Stockmann
5 practice areas
View full profile
Maples Group
3 practice areas
View profile
Simmons & Simmons
5 practice areas
View profile
Van Campen Liem
3 practice areas
View profile

Tier 4

Ashurst Perkins Coie
5 practice areas
View profile
CMS Luxembourg
6 practice areas
View profile
DPR Tax Law
3 practice areas
View full profile
FBX Legal & Tax
2 practice areas
View profile

Other notable

Charles Russell Speechlys
3 practice areas
View profile
Tax controversy
Tier 1
14 firms ranked
View full list

Tier 1

A&O Shearman
6 practice areas
View profile
Arendt & Medernach
6 practice areas
View full profile
Baker McKenzie
6 practice areas
View profile
Bonn Steichen & Partners
5 practice areas
View profile
DLA Piper
5 practice areas
View profile
DSM Avocats à la Cour
5 practice areas
View full profile
Loyens & Loeff
6 practice areas
View full profile

Tier 2

Clifford Chance
7 practice areas
View profile
Clément Konrad & Partners
6 practice areas
View profile
KPMG
7 practice areas
View full profile

Tier 3

Dentons
5 practice areas
View profile
Elvinger Hoss Prussen
5 practice areas
View profile
Norton Rose Fulbright
6 practice areas
View profile
SIMON Law
3 practice areas
View profile
Transactional tax
Tier 2
28 firms ranked
View full list

Tier 1

A&O Shearman
6 practice areas
View profile
Arendt & Medernach
6 practice areas
View full profile
Baker McKenzie
6 practice areas
View profile
Deloitte
7 practice areas
View full profile
KPMG
7 practice areas
View full profile
Loyens & Loeff
6 practice areas
View full profile
PwC
7 practice areas
View profile

Tier 2

ATOZ Tax Advisers Luxembourg
4 practice areas
View full profile
Bonn Steichen & Partners
5 practice areas
View profile
Clifford Chance
7 practice areas
View profile
DLA Piper
5 practice areas
View profile
DSM Avocats à la Cour
5 practice areas
View full profile
Dentons
5 practice areas
View profile
EY
7 practice areas
View profile
GSK Stockmann
5 practice areas
View full profile
Norton Rose Fulbright
6 practice areas
View profile
Simmons & Simmons
5 practice areas
View profile
Stibbe
3 practice areas
View full profile
TS&P
4 practice areas
View full profile

Tier 3

Ashurst Perkins Coie
5 practice areas
View profile
Bonn & Schmitt
3 practice areas
View profile
CMS Luxembourg
6 practice areas
View profile
Charles Russell Speechlys
3 practice areas
View profile
Clément Konrad & Partners
6 practice areas
View profile
DPR Tax Law
3 practice areas
View full profile
Elvinger Hoss Prussen
5 practice areas
View profile
Maples Group
3 practice areas
View profile
Van Campen Liem
3 practice areas
View profile
Overview

DSM Avocats à la Cour is comprised of managing partner Mario Di Stefano and dispute resolution specialist Alex Pham. The group advises corporate clients on international transactions and investment structures. The firm handles strategic tax planning and high-end technical advice, including municipal business rates and registration duties. Specialist sectors are financial services, HNWIs, real estate and investment funds.  

Recent cases include advice relayed to C2Pharma in a tax assessment annulment against the Luxembourg Tax Authorities valued at EUR 15 million. It also advised the Wagner Group on tax restructuring and the 85% share deal pertaining to a European Data Hub investment fund.  

Client feedback  

‘’Thinking outside the box, being solution-oriented, pragmatism.’’ 

‘’Visibility in the market and technical capacity.’’

Linked Reviews
Tax

DSM Avocats à la Cour is composed of founding and managing partner Mario Di Stefano and dispute resolution specialist Alex Pham. The group advises corporate clients on international transactions and investment structures. The firm handles strategic tax planning and high-end technical advice, including municipal business rates and registration duties. Specialist sectors are financial services, HNWIs, real estate and investment funds.

Recent cases include tax litigation for a pharmaceutical company before the Luxembourg courts to annul a tax assessment. It also provided an investment fund with pre-litigation advice.

Client feedback

“Technical knowledge.”

“Service and responsiveness.”

“Very professional service, swift follow up, efficient dispute resolution.”

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Sponsored

Sponsored

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World Tax Sponsored

  • Sponsored by DSM Avocats à la Cour
  • Sponsored by DSM Avocats à la Cour
  • Sponsored by DSM Avocats à la Cour