The federal government says it has not ruled in-or-out any changes to Australia's taxation system, including the Goods and Services Tax (GST).
Prime Minister Malcolm Turnbull says the federal government is committed to tax reform, despite being personally unconvinced on the merits of increasing the G-S-T to 15 per cent.
But those comments have attracted criticism from business groups and some state leaders.
Prime Minister Malcolm Turnbull says all options for tax reform are being considered - including cutting negative gearing, superannuation tax deductions and limiting annual tax deductions in return for lower tax rates.
And he insists a proposal to increase the Goods and Services Tax from 10 to 15 per cent could still be an option.
