http://www.gao.gov/products/GAO-09-157Many U.S. corporations operate globally and have foreign subsidiaries. The subsidiaries may be created, for example, to take advantage of sales opportunities or favorable labor conditions. In some cases they may be used to reduce taxes. GAO was asked to update its 2004 report on large federal contractors with subsidiaries in countries sometimes called tax havens because of low taxes and a general lack of transparency. In response, GAO determined how many of the 100 largest publicly traded U.S. corporations and the 100 largest publicly traded U.S. federal contractors have subsidiaries in jurisdictions listed as tax havens or financial privacy jurisdictions. GAO (1) combined three lists of such jurisdictions created by governmental, international, and academic sources and (2) identified large publicly traded U.S. corporations and federal contractors and the locations of their subsidiaries using the Fortune 500 list, a federal contracting Web site, and a Securities and Exchange Commission (SEC) database.
Eighty-three of the 100 largest publicly traded U.S. corporations in terms of 2007 revenue reported having subsidiaries in jurisdictions listed as tax havens or financial privacy jurisdictions. Sixty-three of the 100 largest publicly traded U.S. federal contractors in terms of fiscal year 2007 federal contract obligations reported having subsidiaries in such jurisdictions. Since subsidiaries may be established in listed jurisdictions for a variety of nontax business reasons, the existence of a subsidiary in a jurisdiction listed as a tax haven or financial privacy jurisdiction does not signify that a corporation or federal contractor established that subsidiary for the purpose of reducing its tax burden. GAO did not attempt to determine if corporations or contractors with subsidiaries in such jurisdictions engaged in transactions with their subsidiaries to reduce their tax burden. In addition, the SEC only requires public corporations to report significant subsidiaries, so the number of subsidiaries in jurisdictions listed as tax havens or financial privacy jurisdictions for each corporation or federal contractor may be understated in this report. There is no agreed-upon definition of a tax haven or agreed-upon list of jurisdictions that should be considered tax havens. However, various governmental, international, and academic sources used similar characteristics to define and identify tax havens. Some of the characteristics included no or nominal taxes; a lack of effective exchange of information with foreign tax authorities; and a lack of transparency in legislative, legal, or administrative provisions. A few sources used terms such as offshore financial centers or financial privacy jurisdictions to refer to jurisdictions with similar characteristics. Based on a review of a variety of sources, GAO identified three lists of tax havens or financial privacy jurisdictions. The three sources GAO used are (1) the Organization for Economic Co-operation and Development, (2) a National Bureau of Economic Research working paper, and (3) a U.S. District Court order granting leave for the Internal Revenue Service to serve a "John Doe" summons.