Emma Watson has been named in the latest leak of the Panama Papers.
The Harry Potter star set up offshore company Falling Leaves Limited in the British Virgin Islands in 2013.
But a spokesman said it was established to help protect her privacy, not for tax reasons.
The company is one of thousands that appear millions of documents obtained from Panamanian law firm Mossack Fonseca.
The 26-year-old actress is the latest high-profile individual linked to the data leak that included details of a firm set up by Prime Minister David Cameron's late father.
Watson's spokesman added: "UK companies are required to publicly publish details of their shareholders, and therefore do not give her the necessary anonymity required to protect her personal safety, which has been jeopardised in the past owing to such information being publicly available.
"Offshore companies do not publish these shareholder details.
"Emma receives absolutely no tax or monetary advantages from this offshore company whatsoever - only privacy."
Watson has reportedly suffered incidents that left her anxious over her security, including unwanted approaches by fans.