Federal MP Clive Palmer has served defamation papers on Queensland's Premier, Campbell Newman, over claims Mr Palmer had tried to "buy" the State Government.

Mr Palmer, the leader of the Palmer United Party, has released a statement saying the papers had been served through the Crown Solicitor and a writ had been lodged in the Supreme Court.

He is suing Mr Newman for more than $1.1 million over statements made last month, which the Palmer United Party leader says are "totally false and damaging to his integrity".

He said Mr Newman falsely accused him of trying to "buy" the LNP State Government and implied he had offered incentives to Northern Territory MPs to join the PUP.

Mr Newman made the comments in question just after Mr Palmer revealed Larisa Lee, Francis Xavier Kurrupuwu and Alison Anderson had joined his party.

Mr Palmer has released a copy of the writ, in which he alleges Mr Newman said: "This is a guy who tried to buy a government, my government."

"We said, 'we are not for sale'. As a result, he has gone on a rampage around Australia, trying to buy other people and buy people's votes," the writ quotes Mr Newman as saying.

"I ask, what inducements were offered to these three MPs? What cash? What jobs? What financial support for elections? What offers were made for them to jump ship?"

Several Queensland Cabinet ministers repeated the allegation that day, saying Mr Palmer should focus on his businesses in the state, not his expanding political empire.

Mr Palmer said in a statement that if he were awarded any damages, they would be donated to Mission Australia "to assist the charity with its work to help sacked Queensland public servants".

"These comments by Mr Newman can't be allowed to go unchallenged," he said.