Treasurer Jim Chalmers has made budget sustainability one of the key pillars of the reform roundtable to be held next week.
Concern that budget spending is on an unsustainable trend has been caused by rising government spending as a share of the economy. The spending has not been matched by an increase in tax revenue.
Government spending is forecast to increase further due to very high growth in National Disability Insurance Scheme (NDIS) spending, health and aged care, and a need for higher defence spending over time.
