Greens leader Christine Milne has announced plans to set up a Senate inquiry into the failure of the mining tax to raise any significant revenue.
The tax , well short of the full-year forecast of $2 billion.
Senator Milne will tell the National Press Club today that she plans to move to establish the inquiry when the Senate resumes next week.
She says an inquiry will get to the bottom of the tax's flaws and what needs to be done to fix it.
"I'm confident we'll get the numbers to be able to have this inquiry into how we got to the situation we have, where the mining giants are not paying their way," he said.
"Rio Tinto's celebrating not paying any tax and meanwhile the pockets of single parents have been raided to fill up the shortfall." She says she is hoping Labor and the Coalition support the push.
"The question is, does anyone in the parliament have the political will to stand up to the mining companies, especially in an election year?" she said.
"The Greens have the courage to do that.
We're prepared to work with Labor.
"We'll pass it any time between now and winter break.
"We saw that this was a problem.
"Now that the whole country can see it's a problem, it really is incumbent on the Government to work with us to fix it."