The Prime Minister has made a fresh case for tax cuts.
Federal parliament agreed in April to cut in the corporate tax rate of 27.5 percent for businesses with a turnover of up to fifty million dollars.
That will be phased in over three years.
However, the government wants a 25 percent tax rate for all businesses over ten years.
Malcolm Turnbull says taxes on business are costlier than those in other areas.
Mr Turnbull has cited the recent G-Twenty conference in Hamburg, where he says leaders of all political persuasions were in favour of reducing company taxes in order to increase investment and create jobs.
But Opposition Treasury spokesman Chris Bowen says the government's corporate tax cut plan would be a significant, long-term, structural drag on the budget... costing fourteen billion dollars per year in ten years' time.
