Sebastian Breth Arnberg
Sebastian Breth Arnberg specialises in tax law with a particular focus on disputes with the Danish tax authorities, including complaints and lawsuits before the Danish courts.
Sebastian also advises a wide range of Danish and international companies and real-estate funds on all tax and company law aspects in connection with the sale and purchase of companies and real estate.
In addition, Sebastian is a part-time lecturer in tax law at the University of Copenhagen and an editor at Karnov (the leading provider of compilations of Danish statutes) in its international-tax team.
The Danish Lawyers’ Tax Law Association
The Danish Branch of the International Fiscal Association
Senior Associate, DLA Piper Denmark, since 2025
Attorney, DLA Piper Denmark, since 2023
Attorney, NJORD Law Firm, 2023-2025
Assistant Attorney, NJORD Law Firm, 2022-2023
Head of Section, the Department of the Danish Ministry of Taxation, 2019-2021
Intern, Confederation of Danish Industry, Brussels, Belgium, 2018-2019
Law Student, Danish Industry, 2017-2018
Part-time lecturer, University of Copenhagen, since 2023
Editor, Karnov Group, since 2023