Carl Christian Thier regularly commutes between the USA, Germany, and Great Britain, handling international corporate mandates on-site. His specialization lies in international corporate law, contract law, and tax law, including tax planning, as well as general business law matters. A particular focus of his work is on investments between Germany and the United States. Mr. Thier is admitted as a Rechtsanwalt (attorney) in Germany and as an Attorney at Law in New York, and he handles mandates related to the USA, Germany, Great Britain, and other jurisdictions.

Carl Christian Thier is a founding partner of Urban Thier Federer Rechtsanwälte and Honorary Vice Consul of the Republic of Austria in Central Florida. His practice focuses on German and US law, particularly in international contract law, cross-border tax planning regarding income and estate matters (including in connection with the US-German Double Taxation Treaty), corporate formations, and business negotiations. Another key area of focus is the recognition and enforcement of foreign judgments in the US, particularly German and Austrian decisions. In addition, Mr. Thier advises on cross-border investments between Germany and the United States. He is admitted to practice law in the United States.

Mr. Thier is a member of the German, New York, and British Bar Associations. He is also a member of the American Committee on Foreign Affairs and President and Chairman of the Central Florida Chapter of the German American Business Chamber (GABC). Additionally, he teaches International Law as an instructor at Lawline, a leading US provider of continuing legal education. An independent review of Carl Christian Thier can be found on Anwalt.de.