She has experience in all aspects of tax law, particularly in corporate tax law and VAT. Portmann advises national and international clients on general questions of the Swiss tax law and has special knowledge in M&A transactions, restructurings, corporate immigration, real estate transactions and business aircraft structures. In addition, she represents clients before the public authorities and courts, in particular in contentious proceedings.
Portmann was admitted to the Swiss bar in 2001 and, in 2006, became a Swiss Certified Tax Expert. Before joining Schellenberg Wittmer, she worked in the tax department of KPMG.