Trillion dollar debt bomb to double to fund major spending as borrowing costs rise, former Treasury official Stephen Anthony warns

With government debt hitting a trillion dollars in coming years, what's being done to pay it down before global interest rate rises push up borrowing costs? 

Former Treasury official Stephen Anthony from Macroeconomics Advisory warns the debt bill could double to $1.7 trillion by 2032-33 to fund spending on defence, the NDIS and unfunded superannuation liabilities for public servants.  

I spoke with Stephen Anthony on ABC NewsRadio