As flagged every year in this publication, a deterioration in government finances or lack of political will to turn budget positions around increases the risk of downgrades by credit rating agencies. This risk has materialised for two states and territories over the past year. Rating agency S&P Global downgraded the ACT’s credit rating to AA from AA+, bringing the territory in line with Victoria as the lowest rated state and territory.20 Tasmania also had its credit rating downgraded by Moody’s from Aa2 to Aa3, the lowest of all Australian states. Days later, S&P Global also downgraded Tasmania to AA, on par with Victoria and the ACT. 21 Both rating agencies stated the downgrades for the ACT and Tasmania were due to persistent operating deficits and the growing debt burden.
NSW and Queensland remain on notice by rating agency S&P Global with both states on a negative outlook, while carrying a stable outlook from Moody’s. A negative outlook suggests that these states may face a further erosion in their credit ratings given rising expenditure and infrastructure spending, despite the strong lift in revenue over the past few years.22 Following the release of the Queensland Budget in June 2026, S&P Global warned the state’s public service costs and huge infrastructure spend ahead of the 2032 Olympics put it at risk of being downgraded.23
Meanwhile, the state with the highest debt levels, Victoria, carries a stable outlook from both rating agencies, despite net debt heading towards $200 billion by 2029. However, S&P Global has warned that Victoria could face another downgrade if the state fails to keep a tight rein on expenditure and delivering its planned savings measures.24
Higher spending by the states and territories in response to the oil shock and political pressure to provide ‘temporary’ cost-of-living support also presents a downside risk to the budget bottom line and state credit ratings.25 As the conflict in the Middle East drags on and inflation remains stubbornly high, these measures appear to be more permanent.
The growing debt of the states and territories and deterioration in credit ratings also put Australia’s AAA credit rating at risk, given there is an implicit assumption that the federal government would support states and territories in financial distress.26
Both spending and revenue need to be addressed as a priority
Structural deficits need to be addressed to ensure sustainable budget settings and equity across generations. This requires changes to both spending and revenue as a priority.
Spending reviews should be a priority to ensure value for taxpayer money and that the stated objectives of programs are being achieved in the most cost-efficient manner. This would be more effective than efficiency dividends or blunt budget cuts to agencies in an attempt to streamline the public service.
Realistic spending forecasts are important for properly accounting for fiscal pressures and supporting better decision making. Sound budgeting will also eliminate potential ‘fiscal cliffs’, where government programs are only funded until a certain time, despite the likelihood of the program continuing. For example, as the Parliamentary Budget Office (PBO) has warned, the return to surplus in the medium term in the Federal Budget hinges on some unrealistic assumptions. This includes unprecedented restraint in NDIS spending, no further income tax cuts, a shrinking public service and termination of all temporary government programs.27
Tax reform is also an important part of the fiscal equation as Australia continues to rely heavily on company and personal income tax (over 60 per cent of total tax revenue), and less on the more efficient goods and services tax. Australia’s level of taxation (Commonwealth and state) is just under 30 per cent of GDP, below the OECD average of 34 per cent.28 But the level of taxation does not measure the tax system’s efficiency.
Structural changes, particularly an ageing population, put pressure on revenue with a change in the composition and a narrowing of the tax base. Tax changes in the May Federal Budget for capital gains and property-related tax deductions have been bolder than in previous years, but fall short of substantive reform. For instance, the personal income tax burden and the government’s reliance on it continues to rise despite recent tax cuts, mainly due to bracket creep.29 If there are no policy changes, the PBO expects Australian workers will pay an extra $336 billion in personal income tax by FY37. That is an 86 per cent jump on current levels and would make up over half of the Federal Government’s revenue.30
Cooperation and collaboration with state and territory governments is required to ensure inefficient state taxes, such as transfer duties, are in scope, while ensuring there is suitable replacement revenue.
Strengthening fiscal sustainability targets could provide much needed guiderails
Given the previous lack of political will to curb expenditure growth, strengthening fiscal sustainability targets and metrics to contain government spending and provide clear guiderails, are another important tool. Since the Global Financial Crisis, fiscal sustainability metrics have been watered down, loosely followed or removed altogether, while many remaining fiscal rules were abandoned during the pandemic.31
Targets need to be quantifiable and measurable, such as reducing or limiting debt relative to the size of the economy or revenue; limits on interest costs as a share of revenue; commitments to balance the budget or run surpluses over a cycle; ceilings on spending growth tied to revenue growth or inflation; and caps on tax collections relative to the size of the economy.
Tasmania’s Budget has specific targets and timeframes to achieve its Fiscal Strategy which are more detailed and comprehensive than those of the other jurisdictions.32 For example, net debt to GSP for the general government sector is required to be less than 8 per cent by FY33. This enhances transparency and accountability by enabling the community to track the government’s progress.
Reporting and acknowledging public debt levels at the national aggregate level within the Federal Government Budget papers would also assist in providing more transparency and accountability on Australia’s overall debt burden given the implicit assumption that the federal government would support states and territories in financial distress.
The importance of fiscal sustainability in an uncertain and volatile world
Fiscal sustainability is not an abstract accounting goal. It determines whether governments can respond to shocks, fund essential services, invest in productivity and avoid pushing today’s costs onto future taxpayers. The policy task is not austerity for its own sake. It is discipline and prioritisation: realistic spending forecasts, stronger fiscal rules, better value for money from existing programs, more efficient taxes and a clearer distinction between temporary support and permanent commitments.
The importance of fiscal sustainability has become even more apparent over the past year with fiscal risks intensifying as the global economy faces heightened uncertainty. As pointed out by the IMF, credible medium-term fiscal frameworks can help reduce debt and rebuild fiscal buffers, so if required the government has the flexibility to respond to future shocks.33
This is not simply about reducing debt. It is about ensuring public resources are directed towards investments that lift productivity, expand economic capacity and support future growth. Persistent structural deficits and rising debt can reduce the flexibility to invest in these priorities.
Continued delays in addressing long-term structural deficits will only increase the scale of future adjustments, forcing governments to make more difficult and politically challenging decisions, while placing a greater burden on future generations.34
The benefits of a more ambitious reform agenda will need to be clearly communicated to the community, as the expectations of governments continue to grow. Achieving fiscal sustainability will inevitably involve difficult policy choices and trade-offs.