More transparency from Treasury needed

Comments on George Megalogenis “Hypocrisy shared, now costings reform is due”, 14/08/2010, http://www.theaustralian.com.au/national-affairs/commentary/hypocrisy-shared-now-costings-reform-is-due/story-e6frgd0x-1225905098085
Another solution is that Treasury and Finance have their models and assumptions available to all major parties that have to get their policies costed by Treasury.

While it may not politically correct and appropriate to say that the two departments may be biased politically, to have their costing as a black box is hardly satisfactory.

Just consider the change in the proposed mining tax revenue as a case. Treasury changed its assumptions and used two different assumptions for two different taxes. Was that satisfactory, or confidence building or enhancing?