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Andersen has special qualifications within tax law and has broad experience within this field from both the private business sector and the public sector. Andersen has background from the Tax Law Department of the Ministry of Finance. Furthermore, Andersen has experience and special qualifications within company law and regularly assists in connection with mergers and demergers as well as equity transactions.
Andersen’s main area of practice is within tax law and company law and he is a member of the firm’s department for tax law, focusing on oil- and energy taxation. Andersen works with national as well as international clients within a variety of industries assisting in matters regarding taxation and company law, however with special expertise within petroleum taxation, international tax law, general company taxation, special duties and property tax. Andersen also has experience from drafting laws and regulations and from legislative committees.
For a number of years, Andersen has assisted a broad range of companies, Norwegian as well as foreign, in the petroleum industry, especially in connection with licence transactions, mergers and acquisitions, transfer pricing, contract negotiations, dispute resolutions, continuous tax consultancy, research work relating to tax issues, preparation of income tax returns and filing of Appeals to the Appeals Board for petroleum tax issues. Andersen has also regularly assisted in matters related to licences and framework conditions in the offshore industry, including public affairs.
Legal 500's sources state that Tjomås Andersen is "brilliant".