Treasury Secretary Steven Kennedy has raised alarms about government spending, indicating it is creating long-term budget pressures that will require difficult trade-offs for resilience amidst ongoing political instability.

Australia's ageing population is set to increase the number of individuals over 70 by one million every decade, which will significantly impact budget allocations for aged care and health services.

Kennedy expressed particular concern that the National Disability Insurance Scheme (NDIS) and aged care are emerging as significant long-term financial burdens.

The latest Annual Financial Sustainability Report projects that the NDIS will cost $210.3 billion from 2024 to 2028, with expenses expected to rise from $58 billion in 2028 to $92 billion by 2034 as the number of participants nearly doubles.

The budget is deteriorating by an additional $25 billion due to unavoidable payments, including pension indexation, increased uptake of childcare services, and commitments to health programs.

Uncosted election promises have accumulated to $32 billion, including significant allocations for Medicare and Victorian infrastructure, which could push national debt beyond $1 trillion by 2026.

Andrew McKellar, CEO of the Australian Chamber of Commerce and Industry, warns that both political parties are neglecting spending accountability, which could lead to future tax increases and pressure on interest rates.

The chaotic atmosphere during the Senate estimates hearing detracted from serious discussions about the pressing global economic challenges and the critical need for fiscal sustainability.

A Reserve Bank economist cautioned that slow growth in China, coupled with domestic demand issues, could further weaken Australia's economic outlook.

Kennedy also highlighted the potential economic repercussions of rising geopolitical tensions, particularly those related to U.S. trade policies and relations with China, which could adversely affect Australian exports.

Kennedy emphasized the urgent need to confront the 'spending cliff' in light of the upcoming election, complicating necessary budgetary adjustments.

Government support for aged care is projected to nearly double as a percentage of GDP, with health spending expected to grow by 50% in the coming decades.