Amends Internal Revenue Code provisions relating to taxation of U.S. shareholders of controlled foreign corporations to: (1) exclude from foreign personal holding company income rents and royalties attributable to computer software that is leased or licensed for use outside the United States and that was developed or marketed by a controlled foreign corporation or related person; (2) increase to $5 million (currently, $1 million) the de minimis dollar amount for determinations of foreign base company income; (3) permanently extend the look-thru rule for for the tax treatment of income received or accrued from a controlled foreign corporation; and (4) permanently extend the exemption from foreign personal holding company income for active financing income (income from insurance, banking, financing, or similar businesses) earned on business operations overseas.