The global minimum tax is intended to ensure that profits of internationally active companies with a turnover of more than 750 million euros are taxed at a minimum of 15 percent. This is meant to set limits to tax competition and tax structuring. Challenges for multinational companies. Multinational companies will have to create new data bases for this purpose and set up additional internal processes. This leads to considerable bureaucracy. There are also legal uncertainty and double taxation risks. During implementation, the EU must avoid new burdens to the max. In order to achieve the political goals with as few side effects as possible, avoidable burdens and risks must be excluded utmost. To this end, implementations must be carried out by means of an EU directive that is closely based on international agreements. Above all, overlaps with existing directives must be eliminated during implementation and a mandatory coexistence of additional taxation and global minimum taxation must be prevented. The vbw study Global Minimum Tax - Challenges for the EU substantiates this approach and shows which points need to be considered in detail.