This article discusses some of the effects of the accelerating economic globalization, deregulation of the monetary systems and financial flows, and the fast development of electronic communication and trade. In the corporate tax area, the article considers the effects of tax competition between countries and the development of transfer pricing rules since the publication of the OECD Guidelines in 1995. The article also looks at the tax problems connected with electronic commerce, with respect to both income taxation and consumption taxation, and how the taxation of income from savings will be affected by the increased possibilities to save internationally.