Setting the scene
Offshore finance had long allowed companies and wealthy individuals to reduce taxes, hide assets, or move money through shell companies in secrecy jurisdictions. The Panamanian law firm Mossack Fonseca specialized in creating and administering such entities. Investigative journalists had covered tax havens before, but the scale and searchable detail of the Panama Papers leak was unprecedented.
What happened
On April 3, 2016, the International Consortium of Investigative Journalists and media partners began publishing stories based on 11.5 million leaked Mossack Fonseca documents. The records connected offshore entities to politicians, celebrities, business figures, and associates of world leaders. The revelations contributed to political pressure, investigations, resignations, and renewed attention to hidden wealth and tax avoidance.
Why it still matters
The Panama Papers changed the public conversation about financial transparency, beneficial ownership, corruption, and inequality. They helped push governments to strengthen disclosure rules and examine offshore networks more aggressively. Memorable detail: the source, known publicly only as 'John Doe,' leaked the material to German newspaper Suddeutsche Zeitung, which then coordinated with journalists around the world.
Background
The Panama Papers were a 2016 leak of millions of documents from Mossack Fonseca that exposed offshore companies and financial secrecy involving politicians, business leaders, and wealthy individuals.