Mathias Cormann (WA, Liberal Party, Shadow Assistant Treasurer) Share this | Hansard source

Mr President, I ask a supplementary question. Given that the minister has just conceded that mining tax revenue will depend on commodity price assumptions, production volume assumptions and various other assumptions coming to fruition, will the government now release all the mining tax revenue assumptions it has used—in particular, the commodity price and production volume assumptions—to estimate its mining tax revenue estimates? Given that the government has so far been desperate to keep these assumptions a secret, what has it got to hide from the Australian people? Is it yet another Labor Party budget black hole?