Queensland's treasurer has confirmed the government is considering raiding the state's $30 billion defined benefits scheme for public servants in the upcoming budget.

Curtis Pitt told parliament on Tuesday the government was likely to use some of the fund's $11 billion surplus in the state's June 14 budget to help fund infrastructure.

"Normally I'd refrain from commenting on budget speculation," Mr Pitt said.
"But today I can confirm that the government is considering a range of options including repatriating a portion of the large surplus in the QSuper defined benefits scheme, in accordance with advice from the state actuary.

"Our strategy, including our Debt Action Plan, is aimed at reducing general government sector debt while also allowing us to invest in the infrastructure our growing state needs."

Mr Pitt said the tactic means the government doesn't have to rely on unpopular asset sales and continues on from last year's budget strategy.

He said all members' entitlements in the defined benefits scheme would continue to be paid in full as they were due.

The scheme was closed to new members, he said.

"And contrary to the scare mongering from the LNP, I can confirm that the defined benefit scheme will continue until the retirement of the last current members of the scheme," he said.

Mr Pitt also said there would be no changes to the accumulation superannuation that most public servants used.

He announced during last year's budget that, for five years, defined benefit employer contributions would be used to pay down the state's debt, rather than be invested in the general pool.

The government promised the scheme would stay in surplus for at least five years.