Mathias Cormann (WA, Liberal Party, Vice-President of the Executive Council) Share this | Hansard source

Senator Roberts is right that the $130 billion is an estimate. It's an estimate in a demand driven program. I've seen some of the commentary from observers and I've read some comments from Chris Richardson. The view among commentators appears to be that we have erred on the side of conservativism rather than on the side of underestimating. But the truth is that this is a demand driven program. These are estimates, and changes in economic parameters or changes in decisions could have an impact on the estimate moving forward.