Understanding the Australian Treasury’s Role in the Housing Affordability Crisis

The Australian housing affordability crisis is one of the most persistent and contentious economic challenges facing the nation. Home ownership rates have declined among younger generations, rental stress is widespread, and low-income households struggle to find secure, affordable accommodation. While multiple factors contribute—including population growth, zoning restrictions, construction costs, and investor demand—the federal government’s primary economic agency, the Australian Treasury, holds significant influence over the policy levers that can shape affordability outcomes. This article examines the Treasury’s current and potential role, the tools at its disposal, and the limitations it faces in addressing a crisis that demands integrated action across fiscal, financial, and regulatory domains.

The Treasury’s Core Mandate and Housing Linkages

The Australian Treasury is responsible for advising the government on economic policy, including fiscal strategy, tax reform, financial system regulation, and the long-term sustainability of public finances. Housing intersects with every part of this mandate. Private dwellings represent the largest component of household wealth, mortgage debt is a major financial stability concern, and housing-related tax expenditures (such as negative gearing and the capital gains tax discount) cost the budget billions annually. The Treasury’s analytical capacity—covering housing market data, demographic projections, supply‑side constraints, and distributional effects—makes it a central actor in designing and costing housing policies.

Fiscal Policy and Tax Settings

The Treasury directly manages the design and revenue implications of federal tax provisions that affect housing markets. The most debated include:

  • Negative gearing: Allows investors to deduct rental losses from other income. The Treasury regularly models the impact of restricting or removing this concession, weighing revenue gains against effects on rental supply and house prices.
  • Capital gains tax (CGT) discount: A 50% reduction for assets held over 12 months. The Treasury assesses how altering the discount could reduce speculative demand and free up fiscal space for affordability measures.
  • First Home Super Saver (FHSS) scheme: Allows first‑home buyers to save within superannuation at a concessional tax rate. The Treasury administers the rules governing contributions, withdrawals, and the annual cap.
  • Home Guarantee Scheme: A government guarantee that enables eligible buyers to purchase with a low deposit, managed by the Treasury in partnership with the National Housing Finance and Investment Corporation (NHFIC).

While the Treasury provides analysis of these measures, it does not unilaterally set tax policy—political decisions remain with the government. Nevertheless, the Treasury’s costings and modelling heavily shape the debate and the eventual design of any reform.

Budget Allocation for Housing Programs

Each federal budget includes substantial outlays directed at housing affordability, many of which are designed and administered by the Treasury. These include:

  • Funding for the Housing Australia Future Fund (HAFF), a $10 billion investment fund that returns earnings to build 30,000 social and affordable rental homes over five years. The Treasury manages the fund’s capital structure and the drawdown schedule.
  • Grants to states and territories under the National Housing and Homelessness Agreement (NHHA), which the Treasury co‑ordinates with the Department of Social Services to ensure consistency with fiscal sustainability principles.
  • Direct subsidies through the Rental Assistance program, indexed to rent increases by the Treasury each year.
  • Funding for the NHFIC’s Affordable Housing Bond Aggregator, which lowers the cost of capital for community housing providers.

By controlling budget envelopes, the Treasury influences the scale, timing, and conditionality of housing investment. Its role in preparing expenditure review committee submissions ensures that any new proposal must demonstrate cost‑effectiveness and measurable outcomes before reaching cabinet.

Supply‑Side Levers: Infrastructure and Land Release

Housing supply depends heavily on land availability, planning regulations, and infrastructure capacity. The Treasury does not directly control zoning or building approvals—those powers reside with state and local governments. However, it can influence supply through federal fiscal instruments:

Infrastructure Investment and Housing Density

Major transport and utility infrastructure projects funded by the federal government (e.g., through Infrastructure Australia and the National Partnership Agreements) are costed and evaluated by the Treasury. Decisions about which projects receive priority—and what density requirements attach to funding—can unlock development in greenfield or infill areas that would otherwise remain stalled. The Treasury works with the Department of Infrastructure to model the economic returns of linking housing supply to transport corridors, and it can recommend that federal grants be made contingent on states relaxing restrictive zoning.

Environmental and Land‑Use Assessments

Federal environmental approvals under the Environment Protection and Biodiversity Conservation Act 1999 can delay or halt large residential developments. The Treasury participates in regulatory impact analysis to weigh environmental objectives against housing supply targets, advocating for streamlined assessment pathways where appropriate. Its modelling of housing demand against projected supply informs the government’s position on whether current approval timelines are a material constraint.

Demand‑Side Intervention: Financial Assistance and Macroprudential Linkages

Beyond tax concessions, the Treasury oversees direct financial assistance programs that affect housing demand.

First Home Buyer Grants and Guarantees

The Home Guarantee Scheme (including the First Home Guarantee, Regional First Home Guarantee, and Family Home Guarantee) has expanded rapidly, with 50,000 places available in 2024‑25. The Treasury administers the volume caps, eligibility criteria, and borrowing limits. While these schemes help marginal buyers enter the market, critics argue they primarily boost demand and push up prices—a tension the Treasury’s own analysis has acknowledged.

Interaction with the Reserve Bank and APRA

The Treasury does not set interest rates or prudential rules, but it collaborates with the Reserve Bank of Australia (RBA) and the Australian Prudential Regulation Authority (APRA) through the Council of Financial Regulators. Housing market overheating—particularly investor lending—has led APRA to impose speed limits on interest‑only loans and stricter serviceability buffers. The Treasury’s financial stability team models the systemic risk from high household debt and can recommend that APRA adjust macroprudential settings. While these tools are not direct affordability measures, they aim to prevent the kind of credit‑fuelled price surges that worsen inequality.

Coordination Across Federal and State Governments

Housing affordability cannot be resolved by the Commonwealth alone. States control land use, public housing tenure, conveyancing taxes (stamp duty), and tenant protections. The Treasury leads federal‑state negotiations on housing fiscal transfers, including the NHHA and the new bilateral housing agreements announced in 2024. Its role includes:

  • Designing performance metrics for state housing delivery, tied to funding tranches.
  • Evaluating state proposals for stamp duty reform (e.g., transitioning to broad‑based land tax) and assessing fiscal impacts on the states.
  • Coordinating the Housing and Homelessness Ministerial Council agendas to align federal budget cycles with state reform timetables.

The Treasury’s ability to broker agreements has improved with the creation of the Housing Australia unit inside the department, which acts as a dedicated policy hub for cross‑jurisdictional issues.

Recent Major Initiatives: HAFF, NHHA Reform, and the National Housing Accord

The most significant federal housing initiatives under the Albanese government have Treasury at their core.

Housing Australia Future Fund (HAFF)

Passed in September 2023, the HAFF commits $10 billion in public investment to generate returns for social housing construction. The Treasury not only designed the fund’s capital structure (targeting a 5% annual return) but also ran the fiscal costing that convinced the Parliamentary Budget Office of its long‑run sustainability. The fund aims to deliver 30,000 homes over five years, with a further 10,000 for homelessness responses. Implementation is overseen by the Treasury in concert with Housing Australia (formerly NHFIC).

National Housing and Homelessness Agreement (NHHA) Replacement

In 2024, the government committed to a new NHHA with increased funding ($2 billion over five years) and stronger conditions requiring states to boost planning reforms. The Treasury designed the new funding formula—based on population share, rental stress indicators, and historical housing investment—to correct previous inequities. It also introduced a requirement for states to publicly report on land release and approval times, a transparency measure the Treasury modelled from international best practice.

National Housing Accord

Launched in 2022 and updated in 2024, the Accord is a partnership between federal, state, and local governments, together with the property sector and community housing providers, aiming to build 1.2 million new well‑located homes by 2029. The Treasury provides the macro‑economic forecasts of population growth and household formation that underpin the Accord’s targets, and it coordinates quarterly progress reports.

Challenges and Criticisms of Treasury’s Approach

Despite its analytical depth and administrative reach, the Treasury faces limitations in tackling housing affordability.

Policy Fragmentation and Short‑Term Horizons

Housing policy is split across multiple departments—Treasury, Social Services, Infrastructure, Climate Change—leading to inconsistent signals. For instance, while the Treasury pursues demand‑side tax breaks for investors, the Department of Social Services funds rental assistance that indirectly flows to the same investors. The Treasury has been criticised for not pushing a comprehensive reform package that aligns supply, tax, and welfare systems.

Reluctance to Confront Entrenched Tax Settings

Both major parties have avoided major reforms to negative gearing and the CGT discount, despite repeated Treasury recommendations over the decades to limit or phase them out. The 2019 federal election demonstrated the political cost of such changes, and the Treasury now operates under explicit government instructions not to model revenue‑neutral alternatives. Critics argue this self‑censorship undermines the department’s independence.

Lack of Direct Control Over Supply Constraints

State and local governments hold the levers on zoning, planning approvals, and affordable housing mandates. The Treasury can incentivize reform but cannot compel it. The NHHA’s conditions have been weak in practice, with several states failing to meet reporting requirements without penalty. The Treasury’s leverage is limited to grant withholding—a blunt tool that can disrupt state budgets rather than encourage genuine change.

Demand‑Side Subsidies May Inflate Prices

Economic modelling by the Treasury and academic bodies like the Australian Housing and Urban Research Institute (AHURI) consistently shows that grants and guarantees for first‑home buyers increase purchasing capacity without adding supply, leading to price capitalisation. The Treasury has acknowledged this in internal briefs but continues to administer these schemes due to their political popularity. A more effective long‑term approach would tie demand support directly to new supply, such as shared‑equity models that cap price rises.

Future Directions: what the Treasury Could Do Differently

Looking ahead, the Treasury could strengthen its impact through several reforms:

  • Integrated housing strategy: Present a single, cross‑departmental affordability strategy in each Budget, with clear targets for supply, rent burden, and home ownership rates.
  • Tax reform roadmap: Model and publish a staged transition away from negative gearing and the CGT discount, paired with lock‑in provisions to avoid disrupting existing investors.
  • Conditional infrastructure funding: Require any federal funding for urban transport or utilities to be contingent on state zoning changes that allow medium‑density housing near transport hubs.
  • Better integration with financial stability: Formalise a joint Treasury‑RBA‑APRA “housing affordability and stability committee” to monitor interactions between credit easing and house prices, and to recommend pre‑emptive macroprudential actions.

These steps would leverage the Treasury’s strengths in economic analysis and budget design while pushing the boundaries of its current mandate. Without such integration, piecemeal measures will continue to yield incremental gains against a structural crisis.

Conclusion

The Australian Treasury is an indispensable actor in the housing affordability policy network. Its control over fiscal settings, budget allocations, and intergovernmental funding gives it the power to shape both the supply side and demand side of the housing market. Through vehicles like the Housing Australia Future Fund, the National Housing Accord, and the Home Guarantee Scheme, the Treasury has delivered significant new funding and targeted supports. Yet the persistence of high prices, rising rental stress, and declining home ownership rates demonstrate that current approaches are insufficient. For the Treasury to fulfill its potential, it must drive deeper structural reforms—especially in tax, federal‑state coordination, and the link between infrastructure and housing—rather than simply administering popular demand‑side programs. Only then can Australia move beyond managing the crisis toward solving it.

For further reading, see the Treasury’s 2024 Intergenerational Report on housing trends, AHURI’s analysis of tax settings and affordability, and the Productivity Commission’s 2022 inquiry into homelessness.