And carbon tax hasn't been properly costed either - they didn't have enough time...LOL
"4.09pm The Australian Greens admit there wasn't enough time for Treasury to undertake all of its economic modelling using the $23 a tonne starting point for a carbon price.
According to a Treasury document released on Sunday, the department modelled the household impact of a carbon price using a $23 a tonne price, but used a $20 figure for the "core policy scenario"."