Three stars of the BBC sitcom Mrs Brown's Boys reportedly put more than £2 million into companies in Mauritius as part of a tax avoidance scheme.
Patrick Houlihan and Martin and Fiona Delany took funds received from the production company owned by creator and star of the show, Brendan O'Carroll, and transferred them overseas, the BBC reported.
It is the latest claim to spring from the Paradise Papers leak.
Documents allegedly show money paid into a UK firm by the production company was transferred to Mauritius companies through a trust which took 12.5%.
These companies, said to be under the actors' control, then used a third party to pay loans into the three actors' personal UK bank accounts, it is claimed.
Mr O'Carroll told the broadcaster neither he nor his companies had been involved in a tax avoidance scheme or structure.
A spreadsheet showed that, in December 2015, Mr Houlihan's offshore company had assets of £696,349, Fiona Delany's £715,122, and Martin Delany's £725,030, the BBC said.
Mr Houlihan told the Irish Times he did not fully understand the scheme, and that he had to Google what tax avoidance was when he was contacted by a BBC reporter.
The actors have not responded to the BBC's request for comment.
Guidance released in summer 2016 from HM Revenue and Customs warned that it can tax loans paid to contractors or freelance workers through trusts or umbrella companies, just like normal income.
"In reality, you don't pay the loan back, so it's no different to normal income and is taxable," the guidance said.