Queensland Attorney-General Jarrod Bleijie says he does not believe that former federal treasurer Peter Costello has a conflict of interest as author of an audit into the state's finances.

The Brisbane Times news website is reporting the Crime and Misconduct Commission (CMC) has received a complaint that Mr Costello's report could benefit some of his clients as a lobbyist.

The Costello audit recommends outsourcing Queensland Government services and selling government assets and businesses.

Mr Bleijie has told ABC local radio that those recommendations are still being considered.

"As the Minister for Justice I don't have any concerns, but I think as you said before it was a report commissioned by the Treasurer [Tim Nicholls]," he said.

"I guess if you've got any questions with that, the Treasurer really should answer it, but I don't see that there's any conflict of interest there and I think it was an important commission of audit."

The Opposition also raised the claims in Queensland Parliament this morning.

However, the State Government says Mr Costello has fully disclosed his role with a lobbying firm.

Treasurer Tim Nicholls says Mr Costello's role with ECG Advisory Solutions has been made clear.

"When Mr Costello's appointment was announced, his full details - including his involvment in ECG - was released on the day of his appointment," he told the House.

"Oh dear - were you reading the report when that was done?

"When he was appointed? Were you reading it then?"

ECG has released a statement today saying Mr Costello was eminently qualified to do the audit and he has not been contacted by the CMC.

Mr Costello and Mr Nicholls have both denied another claim, where it is alleged Mr Nicholls told people at a fundraising breakfast, prior to the LNP's election win, that Mr Costello would be made an adviser.

Queensland Premier Campbell Newman says any outsourcing or asset sales will be handled independently and transparently.

"Any tender process on any decision we may make in the future - we've not made any decisions - will be handled by independent public servants," he said.