Irish billionaire JP McManus has paid no income tax or capital gains tax in Ireland for the past 20 years, an official Revenue statement shows.

McManus "has not been registered for income tax or capital gains tax in Ireland since 1995," Revenue said in a statement reported by the Sunday Times.

McManus, who is regarded as the 11th richest person in Ireland, with assets just under €1.1billion, lives for part of the year in a €20million mansion near Kilmallock, Co Limerick.

The statement was included in court filings from the United States Inland Revenue Service, which is fighting an application by McManus to recoup €4.6million in taxes it held back after he won $17.4million playing backgammon with a fellow American billionaire.

McManus became tax-resident in Switzerland in the 1990s.

Under Revenue rules, he is not regarded as domiciled in Ireland if he is not in the state for 183 days or more during a year.