Offshore leaks is the name of a report disclosing details of 130,000 offshore accounts in April 2013. Some observers have called it the biggest hit against international tax fraud of all times, 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.
Imee Marcos, daughter of the former Philippine president Ferdinand Edralin Marcos, is on the list. Philippine authorities are investigating if the money is part of the 5 billion dollars with which Marcos fled from the country in the 1980s. Also on the list are the family of Azerbaijani President Ilham Aliyev, former Prime Minister of Georgia Bidzina Ivanishvili, the wife of former Russian First Vice Premier Igor Shuvalov – Olga, Deputy Director of the Board of Gazprom Valeriy Golubev and Ukrainian oligarchs Rinat Akhmetov and Dmytro Firtash.
A German politician, Peer Steinbrück, has called for harsh penalties for the banks involved in the scandal, up to the revoking of banking licenses. ICIJ reports that the series of stories has sparked "official investigations, sweeping policy changes and high-profile resignations" around the world, with the European Union’s top tax official calling Offshore Leaks “the most significant trigger” behind Europe’s new push to crack down on offshore hideaways and global tax dodging. “We're in a completely different context today” because of the Offshore Leaks revelations, Belgium’s secretary of state has said. “It’s a new world.”
In Brazil, ICIJ's criteria for selecting journalists has been harshly criticized for lack of transparency. The journalists chosen by ICIJ are part of media conglomerates that could potentially have connections with offshore account owners. Claims that UOL (a joint venture between Grupo Abril and Folha de S. Paulo) and O Globo (from military dictatorship backers Grupo Globo) journalists might pick and disclose names according to political bias rather than public interest eventually led investigative reporter Amaury Ribeiro Jr. to leave the ICIJ. 
So far the full primary data set has not been made publicly available. However, as of 15 June 2013 a searchable database which includes part of the data is available under the URL http://offshoreleaks.icij.org/.
Any similarity between the ICIF "Offshore Leaks" and "WikiLeaks", such as name and operating as an international, online, non-profit, journalistic organisation publishing confidential or secret information, does not signify any known connection between them.
- ICIJ Offshore Leaks Database – Searching
- Secrecy For Sale: Inside The Global Offshore Money Maze
- Tax havens explained: How the rich hide money: An animation explaining tax fraud in offshore localities.
- Tax haven data leak reverberates around globe
- After Offshore Leaks there isn’t even a paradise for the millionaires at Hedge Journals
- "Riesiger Datensatz enthüllt Geheimgeschäfte in Steueroasen". Zeit. Retrieved 4 April 2013.
- "Secret Files Expose Offshore’s Global Impact". ICIJ. Retrieved 4 April 2013.
- ICIJ The Global Muckraker 2013
- Offshore Leaks, The Ukrainian Week (14 April 2013)
- "Geschäfte in Steueroasen: Steinbrück fordert härtere Strafen für Banken". Spiegel. Retrieved 4 April 2013.