Proposed funding cuts to NDIS would disadvantage Australians with visual impairment, psychosocial disability and Down’s syndrome the most, according to government analysis, with the government hoping to slash those budgets by 50% by the end of 2027.

It also forecasts the cost of the NDIS will more than double in 10 years to $117bn, representing 2.4% of GDP, unless significant changes are made to the $50bn program.

The warning signs contained in a new report by the Office of Impact Analysis (OIA) revealed the options the Department of Health considered as it looked at improve the quality and cost of the NDIS.