Companies that operate abroad, or wish to, quickly find themselves faced with a whole range of tax-related issues, such as what country their revenues should be taxed in. The problem here is that national tax systems usually apply both the worldwide income principle and the source state principle. This means that companies operating internationally are taxed on their worldwide income in their home country, while also having limited tax liability in respect of income earned abroad in the country concerned. In short: sometimes they must pay taxes on the same income in several countries.
To prevent such multiple taxation, Germany has entered into double taxation conventions, which have the status of an international treaty, with numerous countries. These conventions govern which country taxes a company’s income from what entrepreneurial activities, and how double taxation is prevented. To avoid unwelcome and unexpected tax implications, it is essential that you are familiar with these rules.