Offshore Leaks is a report disclosing details of 130,000 offshore accounts that came out in April 2013. Some observers have called it the biggest hit against international tax fraud of all times (to date), although it has been pointed out that normal businesses may use the offshore legislation to ease formalities in international trade.
The report originated from the Washington D.C.–based investigative journalism nonprofit, the International Consortium of Investigative Journalists (ICIJ), who collaborated with reporters around the world to produce the series of investigative reports published in connection with ICIJ's The Global Muckraker. The investigation is based on a cache of 2.5 million secret records about the offshore assets of people from 170 countries and territories, obtained by ICIJ's director, Gerard Ryle.
The ICIJ Offshore Leaks Database is headed with the cautionary paragraph: "There are legitimate uses for offshore companies and trusts. We do not intend to suggest or imply that any persons, companies or other entities included in the ICIJ Offshore Leaks Database have broken the law or otherwise acted improperly." More than 100 journalists from more than 60 countries and dozens of news organizations have taken part in the investigation, which has since expanded to include revelations about the offshore holdings of China's business and political elites.