Nico Rosberg's lawyer has denied claims that the Mercedes driver is evading tax.

The 2016 championship leader's name was mentioned among the millions of leaked financial documents known globally as the Panama Papers, amid suggestions that countless prominent people are hiding wealth and evading tax.

German reports alleged that the documents, originating from a Panama law firm called Mossack Fonseca, showed that Rosberg's contract with Mercedes is via a British Virgin Islands-based 'letterbox company' called Ambitious Group Limited.

"Contrary to some reports, our client has no letterbox company in Panama," Rosberg's Berlin lawyer Christian Schertz said.

"It is true that a letterbox for Nico Rosberg was established in the British Virgin Islands by the firm Mossack Fonseca."

However, Rosberg's lawyer denies this has anything to do with tax.

"The sole reason for this was legal liability issues and the ability to act internationally," said Schertz.

"This facility has nothing to do with tax," he added, insisting Rosberg has always "behaved fiscally correctly in all respects".

"He is domiciled in Monaco and therefore taxable in Monaco," Schertz insisted. "All compensation that he receives from the [Mercedes] team is therefore taxed directly in Monaco."

German reports say that Mercedes is refusing to comment for reasons of business confidentiality, but the carmaker did say there are "no abnormalities" in the dealings with Rosberg in the area of compliance.