Arne specialises in corporate taxation, tax litigation, and corporate and commercial law matters.

He is the head of Kromann Reumert's Tax Law Group, which advises and represents Danish and international businesses in matters concerning Danish and international corporate taxation.

Arne is widely recognised as one of the most outstanding tax lawyers in Denmark. He is member of the Danish Supreme Court Bar and has conducted a large number of high-profile tax law cases.

Chambers Europe 2021

Tax, Band 1

The "very experienced" Arne Møllin Ottosen is a highly regarded lawyer representing clients in tax disputes, with areas of expertise including transfer pricing and joint taxation matters. He also advises on withholding tax issues, as well as the tax structuring aspects of transactions. Sources highlight his customer-centric approach, with one saying: "He is available 24/7 and his focus lies entirely on the client and on making the client succeed."

Legal 500 2020

Tax, Leading Individual

Arne Møllin Ottosen is a very good technical tax lawyer and solution-oriented. 

Chambers Europe 2020

Tax, Band 1

Arne Møllin Ottosen represents clients in tax disputes, with areas of expertise including transfer pricing and joint taxation matters. He also advises on withholding tax issues, as well as the tax structuring aspects of transactions. One source highlights that he is "always on time, reliable and business-oriented."

Legal 500 2019

Tax, Leading Individual

Kromann Reumert's tax expertise encompasses transactional work, VAT matters, transfer pricing issues, incentive schemes, structuring mandates and tax litigation. Group co-head Arne Møllin Ottosen is an expert in corporate tax, transfer pricing work and litigation.

Chambers Europe 2019

Tax, Band 1

Arne Møllin Ottosen  has extensive experience leading high-end contentious tax matters, including transfer pricing and withholding tax before the Danish Supreme Court, as well as the ECJ. A client praises Ottosen for being an "experienced, pragmatic and solution-oriented" tax practitioner.

Chambers Europe 2018


Arne Møllin Ottosen is highly respected for his experience in corporate taxation as well as contentious and tax litigation matters. One client describes him as a "very experienced, strong lawyer with a good business understanding." Another particularly recommends Ottosen for his international credentials, enthusing that "he is the best I have worked with globally by far" and "he has a deep knowledge of both Danish-centric matters but also cross-border matters as well."

Legal 500 2017

Tax, Leading Individual

Kromann Reumert provides ‘to-the-point’ advice on a wide range of tax matters, including corporate structurings, transfer pricing and EU tax law. ‘Excellent’ practice head Arne Møllin Ottosen led on the tax aspects of DONG Energy’s IPO, covering Norway, Sweden, the Netherlands and the UK.

Chambers Europe 2017


Managing partner Arne Møllin Ottosen has extensive experience in corporation tax, routinely advising large domestic and international companies as well as handling tax litigation. Clients say: "He is particularly skilled. He has vast general knowledge within this field, and through his litigation experience he has been able to provide the right perspective." 

Chambers Europe 2016


Practice head Arne Møllin Ottosen is held in the highest regard by clients, who consider him to be "one of the best individuals, if not the best, within Denmark's tax world." Sources also describe him as an "experienced" practitioner with a "good overview of the field." 

Legal 500 2016


‘One of the best in Denmark’, Kromann Reumert’s ‘fantastic’ practice is led by the ‘pragmatic’ Arne Møllin Ottosen. 

Chambers Global 2015


Arne Møllin Ottosen covers transfer pricing disputes and international restructurings. Sources say that he "stands out for direct taxation," and he is appreciated by clients for being "accessible 24/7, and he makes even the most complex issue understandable for us."

Legal 500 2015


Arne Møllin Ottosen, who is ‘knowledgeable about EU law and its relation to Danish tax law’, heads the team at Kromann Reumert, which has expertise in beneficial ownership matters, corporate restructurings and transfer pricing disputes. 

Chambers Global 2014


One source describes department head Arne Møllin Ottosen as "one of the best individuals for tax in Denmark." He receives further praise, with commentators describing him as a "very experienced and likeable lawyer." He is recognised for his strength in tax litigation cases.

Legal 500 2014


Kromann Reumert’s 13-lawyer team displays ‘professionalism and strength in depth’. ‘Client-focused’ practice head Arne Møllin Ottosen, who was recently appointed managing partner, is ‘highly knowledgeable and provides accurate, useful advice’. Recent instructions include advising lenders on TORM’s complex cross-border restructuring and advising KMD’s management team following the company’s acquisition by Advent International. 

Client Choice Awards 2014

Individual winners

Corporate Tax - Denmark - Arne Møllin Ottosen

Legal 500 2013


Practice head Arne Møllin Ottosen, who is ‘a brilliant tax technician who knows about associated disciplines’, advised Agilent Technologies on the $2.2bn acquisition of Dako from EQT Partners.

  • Member of the Danish Lawyers Tax Law Association
  • Member of the International Fiscal Association (IFA)
  • Member of the International Bar Association (IBA)
  • Member of Deutsch-Nordische Juristenvereinigung
  • Member of the editorial board of the Danish international tax review, Skat Udland
  • Danish correspondent for the International Tax Journal
  • Author of Denmark chapter in the IBFD Transfer Pricing Database
  • Author of Denmark chapter in the IBFD Mergers & Acquisitions Database
  • Managing Partner 2014
  • Partner 2001
  • Master of Laws (LL.M.) from the University of London 1999
  • Resident lawyer in Kromann & Münter's London office 1998
  • In-house counsel, Terma A/S 1997
  • Master of Laws (cand. jur.) from Aarhus University 1993
  • Born in 1966
Admission and right of audience
  • Right of audience before the Danish Supreme Court 
  • Admitted to practice law 1993
  • English
  • The Scandinavian languages
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