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Key contacts
Managing Partner: Nikos Siakantaris
Partner, Head of Tax: Martha Papasotiriou
Quick facts
Partners

4

Total number of practitioners

65

Languages

Greek, English

Key practice areas
General corporate tax
Tax
Transactional tax
Transfer pricing
Firm overview

Andersen is the Greek member firm of Andersen Global®, an international association of member firms comprised of tax and legal professionals worldwide.

Andersen in Greece, based in Athens, specialized in tax and accounting and offering a full range of services, including tax accounting, payroll, tax compliance, corporate tax services, tax services to HNWI and UHNWI, international tax services and transfer pricing.

Practice Areas & Sector Specialisations

Key practice areas: 

Business model optimisation, IP management, Economic modelling, Policy design, Technology services

Sector expertise: 

Accounting, Banking, Agriculture, Aviation, Construction and materials, Consumer goods and services, Automotive, Energy, Financial services, Fisheries and aquaculture, Food and beverage, Forestry, Insurance, Gaming, Investment management, Healthcare, Media, Natural resources, Oil and gas, Pharmaceutical and life sciences, Shipping, Real estate, Technology and telecommunications, Tourism, Transport

Address:
103 Vasilissis Sofias Avenue Athens
Tel:+30 2130 311137 Email:Contact Us Web Address:https://gr.andersen.com/
2026 Edition
General corporate tax
Tier 2
19 firms ranked
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Tier 1

Deloitte
7 practice areas
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Dryllerakis Law Firm
6 practice areas
View full profile
EY
7 practice areas
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Koutalidis Law Firm
3 practice areas
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POTAMITISVEKRIS Law Partnership
5 practice areas
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PwC
7 practice areas
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Zepos & Yannopoulos
6 practice areas
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Tier 2

Andersen
4 practice areas
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Grant Thornton
5 practice areas
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KPMG
7 practice areas
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Kyriakides Georgopoulos Law Firm
6 practice areas
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Photopoulos & Associates
6 practice areas
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Tier 3

Stavropoulos & Partners
3 practice areas
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Tier 4

Bernitsas Law Firm
2 practice areas
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Fortsakis Diakopoulos Mylonogiannis & Associates
3 practice areas
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Karamanolis & Associates
2 practice areas
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SA Accounting Solutions
2 practice areas
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Other notable

DFK Global Accounting Solutions
2 practice areas
View profile
Eurofast
2 practice areas
View profile
Transactional tax
Tier 2
11 firms ranked
View full list

Tier 1

Deloitte
7 practice areas
View full profile
EY
7 practice areas
View full profile
KPMG
7 practice areas
View profile
Koutalidis Law Firm
3 practice areas
View profile
PwC
7 practice areas
View full profile
Zepos & Yannopoulos
6 practice areas
View full profile

Tier 2

Andersen
4 practice areas
View full profile
Dryllerakis Law Firm
6 practice areas
View full profile
Grant Thornton
5 practice areas
View profile
POTAMITISVEKRIS Law Partnership
5 practice areas
View profile

Tier 3

Kyriakides Georgopoulos Law Firm
6 practice areas
View profile
Transfer pricing
Tier 2
9 firms ranked
View full list

Tier 1

Deloitte
7 practice areas
View full profile
EY
7 practice areas
View full profile
KPMG
7 practice areas
View profile
PwC
7 practice areas
View full profile
Zepos & Yannopoulos
6 practice areas
View full profile

Tier 2

Andersen
4 practice areas
View full profile
Dryllerakis Law Firm
6 practice areas
View full profile

Tier 3

Kyriakides Georgopoulos Law Firm
6 practice areas
View profile
TPS Greece
3 practice areas
View profile
Overview

Since joining Andersen Global in 2019, the firm has significantly enhanced its international tax capabilities, enabling it to handle high-value, multi-jurisdictional matters across sectors such as TMT, energy, and real estate. It advises ultra-high-net-worth individuals and multinational clients on complex tax issues, including cross-border mergers and inspections. The team actively contributes to Andersen’s Future Leaders training and tax service line, with partner Martha Papasotiriou serving as the firm’s representative in the tax service line of Andersen Global. She plays a key role in knowledge exchange and professional development.  

During the research phase, the firm advised on the tax aspects of a corporate restructuring involving mergers between subsidiaries, the creation of a holding company, and share exchanges, and also prepared the necessary documentation to support the project. In addition, the firm advised on the strategic acquisition of a majority stake in Golden Sandwich, a reputable food production and distribution company, with a strong focus on tax advisory to ensure compliance and tax efficiency throughout the transaction. 

Client Feedback 

"They are exceptionally well-trained professionals with a global mindset—always delivering on time and consistently leaving a strong impression on end clients." 

Linked Reviews
Tax

Anderson is a local independent tax and accounting firm that offers a wide range of services like as tax accounting, tax compliance, corporate tax services, UNHWI and HNWI tax services and transfer pricing. The firm is led by tax lawyer Nikolaos Siakantaris, who is assisted by tax lawyer Martha Papasotiriou.

During the research phase, the firm assisted a Greek consortium of technology, software, and information technology service providers on developing a transfer pricing strategy. The team also aided a US-based construction firm in executing the procedure for the VAT return of expenses incurred in Greece by the US company's Greek division.

3 results3 results
The tax advisory firm becomes the latest member of the Andersen Global network, which has more than 50,000 professionals worldwide
Significant changes include an update to profit markers and an alteration to how an ‘inbound distributor’ is defined
Wingrove will succeed Bill Thomas, who has served in the role since 2017; in other news, Andersen unveiled a sharp increase in revenues for 2025
ITR concludes its analysis of World Tax’s rankings for 2026 by highlighting the firms that stood out most on a global scale
The global tax and accounting firm has appointed two experienced TP advisers from a New Jersey-based boutique
Recent ATO guidance on how companies can demonstrate arm’s-length funding highlights how it is ‘one of the most transparent tax authorities in the world’, one adviser tells ITR
Awards
The firm picked up awards for its work in multiple jurisdictions, while DLA Piper walked away with four individual honours
As ITR’s accreditation title releases its global rankings, we focus on the top performers across the Americas in the first of three regional analyses
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