Advokatfirmaet Thommessen AS has ‘high legal competence in the tax field’ and advises on all tax issues, with a focus on litigation, equity and debt capital markets work, joint ventures and fund establishments; the team also has particular expertise in the real estate, renewables, oil and gas, and shipping sectors. Leading the practice, Marius Holm Rynning focuses on Norwegian and international tax issues, while the ‘excellent’ Finn Backer-Grøndahl is an experienced litigator who represents Norwegian and foreign clients in tax disputes with Norwegian authorities, and Ståle R Kristiansen has extensive experience in a broad range of domestic and international tax issues, including advising on the Norwegian Petroleum Tax regime. The group also includes international shipping tax expert Espen Ommedal and indirect tax specialist Bjørn Christian Lilletvedt Tovsen.