system, the shifting may occur by changing the location of activities generating income or by shifting income to separate enterprises owned by the taxpayer. Most residency systems have avoided rules which permit deferring income from outside its borders without shifting it to a subsidiary enterprise due to the potential for manipulation of such rules. Where owners of an enterprise are taxed separately from the enterprise, portable income may be shifted from a taxpayer to a subsidiary enterprise to accomplish deferral or elimination of tax. Such systems tend to have rules to limit such deferral through controlled foreign corporations. Several different approaches have been used by countries for their anti-deferral rules. In the United States, rules provides that U.S. shareholders of a Controlled Foreign Corporation (CFC) must include their shares of income or investment of E&P by the CFC in U.S. property. U.S. shareholders are U.S. persons owning 10% or more (after the application of complex attribution of ownership rules) of a foreign corporation. Such persons may include individuals, corporations, partnerships, trusts, estates, and other juridical persons. A CFC is a foreign corporation more than 50% owned by U.S. shareholders. This income includes several categories of portable income, including most investment income, certain resale income, and certain services income. Certain exceptions apply, including the exclusion from Subpart F income of CFC income subject to an effective foreign tax rate of 90% or more of the top U.S. tax rate. The United Kingdom provides that a UK company is taxed currently on the income of its controlled subsidiary companies managed and controlled outside the UK which are subject to "low" foreign taxes. Low tax is determined as actual tax of less than three-fourths of the corresponding UK tax that would be due on the income determined under UK principles. Complexities arise in computing the corresponding UK tax. Further, there are certain exceptions which may permit deferral, including a "white list" of permitted countries and a 90% earnings distribution policy of the controlled company. Further, anti-deferral does not apply where there is no tax avoidance motive. Rules in Germany provide that a German individual or company shareholder of a foreign corporation may be subject to current German tax on certain passive income received by the foreign corporation. This provision applies if the foreign corporation is taxed at less than 25% of the passive income, as defined. Japan and some other countries have followed