Mr HOCKEY (North Sydney) (14:08): My question is to the Treasurer. I refer the Treasurer to his statement on ABC Radio National that the government will need to make very substantial savings to fund programs like the National Disability Insurance Scheme, massive increases to school funding and massive blow-outs on border protection costs. Given that the Treasurer claimed tax increases of $16 billion as savings in this year's budget, will he rule out further tax increases to pay for his big spending promises?