A leak that exposed a very large, very awkward system
On April 3, 2016, the International Consortium of Investigative Journalists and the German newspaper Süddeutsche Zeitung published more than 11.5 million documents from the Panama-based law firm Mossack Fonseca. The release laid bare a sprawling network of offshore shell companies tied to the global financial elite, including current and former government leaders. It was one of the largest data leaks ever, and naturally, it involved millions of documents, terabytes of data, and a great deal of secrecy before anyone saw the light of day.
More than 350 journalists in more than 80 countries spent over a year working through 2.6 terabytes of leaked material before the findings were made public.
Ten years later, the basic questions remain simple enough: what exactly did the Panama Papers reveal, who was caught up in them, and did any of it actually change the system?
What the Panama Papers showed
At its core, the scandal was about the leak of 11.5 million confidential files, including emails, contracts and banking statements from Mossack Fonseca.
Those records exposed a vast international web of offshore shell companies linked to some of the world’s richest people, including politicians, business leaders and public figures. The arrangements stretched from the United Kingdom to Russia and from Australia to Brazil, with companies registered in places such as the British Virgin Islands, the Bahamas and Panama, where tax authorities have historically had a harder time looking over anyone’s shoulder.
About 214,000 entities were tied to people and companies in more than 200 countries and territories. The documents covered a long period, from the 1970s through to 2016.
Who leaked the documents?
The leak came from an anonymous whistleblower using the name John Doe. The material was first shared with Süddeutsche Zeitung, which then worked with journalists around the world to investigate and publish the findings.
For reporters involved in the project, the work was painstaking. P Vaidyanathan Iyer, managing editor at The Indian Express and one of the journalists who worked on the Panama Papers, said the process of identifying useful information felt like “looking for a needle in a haystack”.
“We were continuously, for about six to eight months, just reading data,” he told Al Jazeera.
“My team of three and I had a small cubicle to ourselves in the office, and we were cut off from the rest. Day and night, we were going through data, downloading documents onto our laptops and computers, which were all very secure, with restricted access. It was arduous work,” he added.
Who was named?
Hundreds of people were identified as directors, shareholders or beneficiaries of offshore shell companies, including more than 140 politicians.
Among the names linked to the leak were Mauricio Macri, then president of Argentina, and Petro Poroshenko, Ukraine’s fifth president, who served from 2014 to 2019. Former Pakistani Prime Minister Nawaz Sharif and former Icelandic Prime Minister Sigmundur Gunnlaugsson were also named, along with links to shell companies in offshore tax havens.
The list did not stop at the sort of people who enjoy speeches about accountability while keeping excellent distance from it. It cut across politics, business and public life on several continents.
Offshore shell companies, explained
Offshore companies are legal entities incorporated in a jurisdiction outside the owner’s country of residence.
Shell companies are a narrower category. Kehinde Olaoye, a professor of commercial law and business law associations at Hamad bin Khalifa University in Qatar, told Al Jazeera that these are entities with “no real substantial business or operations in its place of incorporation or registered office.”
Shell companies can be used to create paperwork around financial transactions that may be fraudulent or simply difficult to scrutinise. When they are based outside the owner’s country, they become offshore shell companies.
Are they illegal?
Not necessarily. Offshore shell companies are not automatically illegal.
They can be used for legitimate purposes such as setting up trusts, protecting wealth or supporting estate planning. But, as Olaoye noted, “there is always a thin line between legitimate and illegitimate purposes” when offshore structures are involved.
“Usually, individuals and companies receive advice from financial advisers and legal advisers on how they can structure their business to take advantage of ‘favourable’ tax benefits,” she said.
So yes, in some cases it is paperwork. In other cases, it is paperwork with a much more expensive tailor.
Who faced consequences?
The political fallout began quickly.
A month after the leak, Icelandic Prime Minister Sigmundur Gunnlaugsson resigned after mass protests. The leaked documents suggested he and his wife had set up a company, Wintris, in the British Virgin Islands with help from the Panamanian law firm. His resignation helped bring down the Icelandic government at the time.
Pakistan saw another major shake-up. In 2017, the Supreme Court disqualified Nawaz Sharif from office after the leaks, despite an earlier ruling that had found insufficient evidence of corruption. The Panama Papers showed that his children held several companies in the British Virgin Islands. In 2018, Sharif was banned from politics for life.
Mossack Fonseca itself also took a severe hit. The firm, which had more than 40 offices around the world, reduced staff and eventually shut down in 2018.
Its co-founders, Jurgen Mossack and the late Ramon Fonseca, were later acquitted by a Panamanian court, along with 26 others accused of helping set up shell companies linked to scandals in Brazil and Germany.
How much money has been recovered?
According to the ICIJ, governments around the world recovered about $2 billion in taxes, penalties and levies between 2016 and 2026.
Some countries recovered significant sums. The UK, Sweden and France each recovered between $200 million and $250 million. Others, including Japan, Mexico and Denmark, recovered around $30 million each. Austria, Slovenia and New Zealand recovered between $1 million and $8 million.
Panama itself recovered about $14.1 million.
The numbers are not trivial. They are also not exactly the sort of total that suggests anyone has cleaned up the entire offshore universe and sent it home early.
In India, Iyer said the government brought forward close to 425 tax cases. The amount actually recovered was about 150 crore rupees, or roughly $16 million, while the total tax under investigation was about $1.5 billion.
“The amount realised in taxes, which the government got back into its treasury was just about 150 crore rupees, which is around $16m. Whereas the total tax which was brought under investigation was about $1.5bn,” he said.
Did the law change?
Yes, to a point.
After the Panama Papers, governments introduced measures aimed at limiting abuse of shell companies. In the United States, the Corporate Transparency Act now requires disclosure of beneficial owners, meaning the people who ultimately profit from offshore entities. Other measures have focused on improving information sharing between tax authorities.
There have also been broader efforts to tighten cross-border tax rules. The United Nations is considering draft proposals for a Convention on Taxation, and several countries have signed bilateral double-taxation treaties intended to reduce tax avoidance and prevent the same income from being taxed twice.
Still, the system remains patchy. There is no single international tax rulebook that everyone must follow. Instead, there are overlapping treaties and agreements, which creates space for the most polished financial advisers to pick whichever arrangement suits their client best.
“The main challenge in international tax law is that there is no multilateral tax convention, which creates problems of tax competition and ‘treaty shopping’,” Olaoye said.
So the Panama Papers did force governments to move, and in some cases to recover money or punish powerful people. But a decade on, the bigger architecture of offshore finance still exists, which is inconvenient if the goal was to make secrecy a little less fashionable.
