Prepared by the Australian Council of Social Service from estimates used by the Commission of Audit, the analysis finds total government spending on track to grow 3.7 per cent per year above the rate of inflation for the next decade.

But spending on the disability support pension is projected to grow only 2.8 per cent, spending on unemployment benefits only 1.1 per cent, and spending on family tax benefits is expected to slide in real terms even before any budget cutbacks.

Even the age pension is only expected to increase in cost 4.7 per cent per year above the rate of inflation.

The really big drivers of government spending are childcare and paid parental leave, whose costs are set to soar 14 per cent per year above the rate of inflation; hospitals whose costs are set to soar 11.7 per cent, and carers payments whose costs are set to soar 10.2 per cent per year.

ACOSS chief executive Cassandra Goldie said if the government was serious about containing costs it should be talking about containing the costs that are growing the fastest rather than those growing the slowest.

"This is evidence that despite the current media focus, income support for those who are unemployed, people with disabilities and low-income families are not the primary drivers of budget expenditure growth," she said.

Newstart, family tax benefits and the disability support pension between them account for less than 3 per cent of the expected expenditure growth in the next 10 years. Hospitals, the National Disability Insurance Scheme, schools, childcare and parental leave and age pensions between them account for 50 per cent.

Measures likely to be included in the budget include denying the Newstart unemployment benefit to people aged under 25, requiring people under 30 to work for the dole, restricting family benefits to families earning less than $150,000 and regular tests to re-prove eligibility for the disability support pension.

The budget is also expected to gradually lift the pension age to 70, and to lift the pension by a less generous formula after the election.

It will aim to return the budget to a surplus of 1 per cent of growth.