Purpose: The purpose of this thesis is to study and evaluate the Norwegian tonnage tax system and its impact on Wilhelmsen Group.

Background/Problem: The maritime sector has always been highly affected by financial and political shocks. So when Norway introduced their new tonnage tax system, it came as a great shock for shipping companies located in Norway. They now had to decide whether to enter the new system or not.

Method: To solve the purpose, Wilhelmsen's annual reports has been scruti-nised in order to create an overview look of the impacts of the new tonnage tax system. In addition, useful information has come from several journals and seminars attended at BI 2008.

Conclusion: The findings of this thesis argues that the New Norwegian tonnage tax system is in its core state, where many changes are still being made. However what has been established is that the new tonnage tax system is profitable, and that Wilhelmsen group wants to apply for this new system, shows its successfulness.