This uniquely affordable volume contains all of the relevant Internal Revenue Code provisions and Treasury Regulations necessary for introductory classes in United States international taxation. It is specially geared for use in two or three-unit international taxation courses, and includes essential legislation and regulations affecting U.S. taxation of foreign entities and of domestic entities whose income derives from outside the United States. Lathrope's 2015 edition is notably one quarter the length and a fraction of the price of the leading competition. The new volume contains all relevant statutory changes made since 2014, including the changes made by The Tax Increase Prevention Act of 2014 (Pub. L. No. 116-295). IRS regulations are updated (notably, the regulations on allocation and apportionment of interest expense and Section 909) and the inflation-adjusted items for 2015 are included (Revenue Procedure 2014-61).