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Advokatfirmaet Thommessen AS

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The cohort at Advokatfirmaet Thommessen AS has a strong reputation for its abilities advising its client roster on the full remit of complex taxation issues, often in cross-jurisdictional contexts. Its workload incorporates direct tax and property tax matters, as well as advising on the tax aspects of fund establishments, capital markets issues, joint ventures and renewable energy transactions; the team is also noted as ‘one of the leading teams in indirect tax’, an area of expertise of Bjørn Christian Lilletvedt Tovsen. The practice is also equipped to handle contentious cases at various court levels; Finn Backer-Grøndahl advises foreign clients on tax disputes with national authorities. Other key practitioners include Ståle Kristiansen who ’stands out in the field’, and Espen Ommedal, who advises high-net-worth clients on migrations. Marianne Brynjulfsen Overaa has a corporate tax focus, Camilla Hammer Solheim joined the practice from BAHR in September 2024, and Marius Holm Rynning helms the offering.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Great tax lawyers - pragmatic, knowledgeable and updated on our industry. They are great contacts and very responsive.’

  • ‘Ståle Kristiansen stands out in the field. He always gives us tailored and pragmatic advice, not trying to over-complicate issues.’

  • ‘Thommessen is one of the leading teams in indirect tax and has a competent team including Bjørn Christian Tovsen.’

  • ‘Bjørn Christian Tovsen is always pleasant to work with and he is always updated on the latest news and has a good industry knowledge.’

  • ‘What has stood out with the Thommessen team has been their extensive knowledge of the industry that we operate in, including cross-border and international tax-related matters as well as the Norwegian tax regime.’

  • ‘Espen Ommedal has extensive experience in the shipping and maritime industry, including extensive experience with international tax matters as well as the tonnage tax regime. We have found his counselling to be very good and he has great skill in presenting complex tax matters in an easy and understandable way.'

  • 'Espen Ommedal has an extensive network abroad which stands out compared to many of the other firms and lawyers that we have experience with.'

  • 'Marianne Brynjulfsen Overaa and Camilla Bergby have been heavily involved in the various processes together with Espen Ommedal and we are impressed by them.’

Key clients

  • Fresenius Kabi
  • Equinor
  • Statkraft
  • Alcoa Corporation Inc
  • Storebrand
  • DNB
  • Odfjell SE
  • Sølvtrans AS
  • Intership AS
  • Aqua Group AS
  • Westfal Larsen AS
  • Masterbulk Pte Ltd.
  • Knutsen NYK Offshore Partners LP
  • PGNIG Upstream Norway AS
  • Elkem ASA
  • Vår Energi ASA
  • Carucel Eiendom
  • Aeternum Capital

Work highlights

  • Assisted a client in connection with its successful fundraise.
  • Acted on behalf of Fresenius Kabi in a case before the courts regarding VAT on stability studies provided to pharmaceutical companies all over the world.
  • Provided support to Knutsen on the establishment of a French ship-owning structure.

Lawyers

Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Ståle Kristiansen
Hall of fameAdvokatfirmaet Thommessen AS
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Marianne Brynjulfsen Overaa
Advokatfirmaet Thommessen AS
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head

The lawyer(s) leading their teams.

Marius Holm Rynning

Other key lawyers

Marianne Brynjulfsen Overaa, Camilla Bergby, Espen Ommedal, Bjørn Christian Lilletvedt Tovsen, Ståle Kristiansen, Finn Backer-Grøndahl, Camilla Hammer Solheim