Mossack Fonseca Co-Owner Sentenced for Offshore Tax Evasion

Sep 29, 2026, 9:30:00 AM

offshore tax havenRust never sleeps, and apparently neither does the long reach of German law in a case involving approximately $15 million in tax losses tied to Panamanian shell companies and offshore tax havens.

 

A decade ago, the International Consortium for Investigative Journalists (ICIJ) broke the Panama Papers scandal, a 2.6 terabyte data leak to a German newspaper that ensnared the world’s wealthy and elite. The law firm at the center of the anonymous data leak was Mossack Fonseca, a law firm headquartered in Panama. The 2016 story broke worldwide, leading to global tax investigations and the recovery of more than $1 billion in back taxes and penalties. By 2018, Mossack Fonseca closed its doors, unable to overcome the reputational and economic damage of the leak.

 

The Panama Papers remain a useful reminder of the pros and cons of offshore tax havens, shell companies, and the foreign reporting requirements that can accompany offshore assets. When these structures are not handled properly, they can attract significant scrutiny and lead to serious consequences. For additional background on offshore tax compliance and reporting requirements, download our resource guide, Offshore Tax Matters Explained.

 

What happened to the Mossack Fonseca principals?

The document leak involved clients from around the world and led to tax investigations involving politicians, public officials, and wealthy individuals. Two principals of the firm faced money laundering charges in Panama. Jürgen Mossack was acquitted in 2024, while Ramon Fonseca died before the trial concluded and the case against him was dismissed. Mossack has separately been sought by German authorities in connection with tax-related allegations. That leaves Christoph Zollinger.

 

Who is Christoph Zollinger?

Zollinger is a former partner at Mossack Fonseca who was tried in Cologne, Germany, this spring on charges of tax evasion. A dual Swiss-Panamanian citizen, Zollinger departed from Mossack Fonseca before the Panama Papers scandal engulfed the firm. Despite that departure, prosecutors accused Zollinger of helping create the infrastructure through which the firm assisted clients in evading taxes and transferring money worldwide.

 

While Zollinger admitted to aiding and abetting tax evasion, he denied being a co-founder of the mayhem that led to the meltdown of the law firm and the sprawling offshore system revealed by the Panama Papers, which included information on more than 214,000 offshore entities.

 

Zollinger received a suspended sentence of one year and nine months, with a three-year probation period. He served no time in jail. Reading from his statement, attorneys for Zollinger said, “In the end, I accept the consequences.”

 

Offshore accounts, shell companies and tax compliance

Offshore tax structures can serve legitimate financial purposes and remain perfectly legal. However, foreign bank accounts, offshore entities and other international assets can create reporting obligations that should not be overlooked. If you are exploring a new offshore account, or have questions regarding offshore reporting, speak with an experienced tax attorney.

 

The tax attorneys at Robert J. Fedor, Esq., L.L.C. can provide advice and perspective you can bank on. Contact us at 440-250-9709 or set up a consultation. We offer services to clients in Northeast Ohio, Chicago, New York, and internationally.

 

Download The Guide to  Offshore Tax Matters