Treasurer Jim Chalmers has launched a political broadside against the coalition, accusing it of planning a half-trillion-dollar hit to the budget bottom line.
Labor has found itself under increasing pressure in recent weeks over its decision to wind back tax concessions for investments in property, shares and trusts.
But costings released by Dr Chalmers show repealing the changes - as the coalition has promised - would cost the federal budget tens of billions of dollars in lost revenue.
The opposition's policies would cost a total of $544.4 billion over the next nine years, according to the analysis.
That includes $212 billion in lost revenue from indexing income taxes, $43.1 billion from repealing the CGT and negative gearing reforms, $44.2 billion from scrapping the new tax on trusts, $93.5 billion on increased defence spending and $50 billion from slashing Australia's migrant intake.
