E-commerce on the Internet will create new demands on taxation. In the field of income and business taxation there exists a large potential for profit-shifting into low-tax countries, especially concerning transfers of immaterial goods and transfer pricing. In the long run, this can lead to a severe revenue shortfall. Turnover taxation/VAT raise problems if foreign suppliers sell electronic products or services to final consumers online. VAT should be charged in the country where the consumption takes place, which is currently not the case. Otherwise, distortions of competition and unjust effects of taxation will become more comprehensive. This requires special technical solutions and closer international co-operation among taxation authori...