Federal independent MP Peter Slipper has joined Queensland billionaire Clive Palmer's political party.

The United Australia Party (UAP) has confirmed that it has accepted Mr Slipper's application to become a member.

The UAP has bypassed some party registration requirements by recruiting a sitting member of parliament.

Mr Slipper currently holds the Queensland Sunshine Coast seat of Fisher, but the UAP has already endorsed its member Bill Schoch to contest the seat in the September election.

Mr Palmer says Mr Slipper can still stand for Fisher as an independent but has not yet applied to represent any other electorate on behalf of the party.

Mr Palmer says he has not spoken to his party's new recruit today.

"I've spoken to all federal members of parliament and I invite everyone, including Julia Gillard, to join the party," he said.

"Mr Slipper has made enquiries. He's been referred to party officials - that's not me."

A statement from the UAP reads: "The sitting independent MP Peter Slipper has applied to become a member. The United Australia Party has accepted [Peter Slipper's] application."

The party's statement says Mr Schoch will remain as the party's endorsed candidate for the seat of Fisher in the next federal election.

Mr Palmer's party shares its name with the party which governed Australia in the 1930s and early 40s under prime ministers Joseph Lyons and Robert Menzies.

Mr Palmer says some of his policies include banning lobbyists from the party, scrapping the carbon tax retrospectively and arranging for asylum seekers to fly to Australia to seek protection.

Last year, Mr Palmer walked away from his lifetime membership of the Liberal-National Party.

The UAP has until Monday to register as a political party.

Mr Slipper, who has been in the spotlight over charges relating to the misuse of cab charges in 2010, has not returned the ABC's calls.