Today's projected budget surplus is on the back of single parents, trainees and apprentices, researchers and job-seekers, instead of sensibly plugging loopholes in the mining tax and building a stronger revenue base for future investments, the Australian Greens said.

"Today's Budget update confirms that Labor is more committed to Australia being a coal country than a caring or clever country," Australian Greens Leader, Senator Christine Milne, said.

Greens Deputy Leader and banking spokesperson Adam Bandt announced today that he will move in parliament for an inquiry into the growing RBA banknote bribery scandal.

The case for a full independent inquiry into what the RBA knew and did about this growing scandal is now overwhelming, he said.

"I will move in Parliament for the establishment of a full independent inquiry into the banknote bribery scandal. The inquiry should have the powers of a Royal Commission," Mr Bandt said.

Greens Deputy Leader and employment spokesperson Adam Bandt says he will amend the MySuper Bill currently before the Parliament.

Mr Bandt says the amendments will prevent super funds from gouging additional fees by unilaterally moving an employee's funds from one MySuper product to another after the employee leaves the workplace.

The Industry Super Network has identified that so-called 'flipping' occurred in 12 out 13 major retail superannuation funds and exposed members to increased costs averaging 30% or $292 per year.

Speaking on Meet the Press today, Greens Deputy Leader Adam Bandt has said the Greens will move to scrap the royalty rebate contained in the mining tax legislation.

Mr Bandt said that the Greiner/Brumby review of the mining royalties has confirmed the inherently flawed nature of the government's royalty deal with the big miners. If the rebate was retained, it would put the Commonwealth's mining tax revenue at the mercy of the States, Mr Bandt said.

"We will move in Parliament as soon as possible to remove this unsustainable deal on royalties", Mr Bandt said.

Greens Deputy Leader Adam Bandt MP says it is disappointing that Malcolm Turnbull failed to stand by his convictions and today joined with the government and Coalition to vote against a Greens motion on a sovereign wealth fund.

"I am disappointed Mr Turnbull wasn't able to stand by his previous statements in support of a sovereign wealth fund. I am amazed that the government and opposition won't consider a Productivity Commission Inquiry into establishing a fund.

Following today's renewed support from Opposition front bencher, Malcolm Turnbull, for the Greens' policy to create a sovereign wealth fund, the Greens Deputy Leader and MP, Adam Bandt, said he would bring on a vote in Parliament on the issue next week.

Mr Bandt's motion, currently before Parliament, would start the process of establishing a new sovereign wealth fund in Australia.

"We need to take some of the benefits of the mining boom and put them away to fund this country's future infrastructure needs" Mr Bandt said.

Adam Bandt media doorstop on Budget

Adam Bandt talks to ABC's Fran Kelly about tax cuts for small business

There are a number of things I would like to do today but I can't.

I would like to talk to you about the detail of the Trans-Pacific Partnership Agreement (TPPA) - but I can't, the draft text is being negotiated in secret.

I would like to reassure you that the US negotiators aren't demanding changes to our domestic policies - but I can't and the leaks suggest they are.

I would like to explain how the draft agreement will impact on the regulation of intellectual property in Australia - but I can't, it's confidential.