The rates of Australians with disabilities engaging in work and social activities have worsened over time, a Productivity Commission report has found.
The annual report, released on Tuesday, examined government services across the disability, aged care, child protection and youth justice sectors.
Among Australians aged between 15 and 64 and living with profound or severe limitations to core activities, labour force and employment-to-population rates both deteriorated by about six per cent between 2009 and 2015.
However, the overall unemployment rate among the cohort only slipped by about three per cent over the same period, the commission found.
At the same time, people with disabilities had less face-to-face contact with family and friends and travelled to social activities less.
The proportion of those who reported their disability or condition as the main reason for not leaving home as often as they'd like rose by three per cent over the period, according to the report.
Some 4.3 million Australians - or 18.3 per cent of the population - had a disability in 2015, while about 5.8 per cent had profound or severe core activity limitations.
Total government spending on specialist disability services was $8.4 billion in 2015-16, an increase of 2.3 per cent compared to the previous year.
States and territories contributed more than 70 per cent of government funding, with the Commonwealth chipping in the rest.
More than half the overall funding pie was spent on accommodation support, while almost 83 per cent of Australian government funding went on employment services.
There was $915.7 million committed to the NDIS in 2015-16, with 30,281 participants securing approved plans worth about $39,100 per year.
Meanwhile, the commission found child protection funding soared by 7.7 per cent in the past year to $4.8 billion, the majority of which was spent on out-of-home care services.
The significant over-representation of young Aboriginal and Torres Strait Islander people in the youth justice system was also highlighted, with detention rates 24 times higher than the non-Indigenous population.
The federal, state and territory governments spent about $30.7 billion - or 1.9 per cent of GDP - on community services in the last financial year.
