The Changing Federal Balance: WACE Year 12 Politics and Law
“Analyse the factors that have changed the balance of power between the Commonwealth and the states and evaluate their significance”
Since 1901 power has shifted steadily from the states to the Commonwealth. The main causes are broad High Court interpretation of section 51 heads of power, Commonwealth control of income tax since 1942, the use of section 96 tied grants, and vertical fiscal imbalance, which together give Canberra influence even over residual state areas.
What this dot point is asking
The framers expected a balanced federation, but the modern balance is heavily centralised. SCSA wants you to identify the mechanisms behind this shift and judge how significant each has been, using cases and contemporary examples rather than vague claims that "the Commonwealth got stronger."
Judicial interpretation
The High Court's reading of Commonwealth powers has been the most important legal driver. The Engineers' Case (1920) abandoned the doctrine of implied intergovernmental immunities and held that section 51 powers should be read broadly according to their natural meaning. Later cases extended this. The Tasmanian Dam Case (1983) confirmed that the external affairs power lets the Commonwealth legislate to implement international treaties, even on matters otherwise within state control, such as land use. The WorkChoices Case (2006) upheld a sweeping use of the corporations power to regulate industrial relations of constitutional corporations, displacing state systems. Each decision widened federal reach without a single word of the Constitution changing.
The external affairs power (section 51(xxix)) and the corporations power (section 51(xx)) have done the most to expand Commonwealth reach, because so much modern activity can be linked to a treaty or to a constitutional corporation.
Financial dominance and vertical fiscal imbalance
The biggest practical lever is money. During the Second World War the Commonwealth introduced a uniform income tax scheme, upheld in the First and Second Uniform Tax Cases. The states stopped levying their own income tax in exchange for Commonwealth grants, and the arrangement became permanent. The Commonwealth also controls the GST, distributed to the states. The result is vertical fiscal imbalance: the Commonwealth raises far more revenue than it needs for its own responsibilities, while the states must deliver expensive services (health, schools, transport) without matching revenue.
Section 96 tied grants
Section 96 lets the Commonwealth grant money to states "on such terms and conditions as the Parliament thinks fit." This allows tied (or conditional) grants, where the Commonwealth attaches policy strings to funding in areas it cannot legislate on directly, such as school curriculum standards or hospital targets. Because the states depend on this money, they often accept conditions that effectively extend Commonwealth influence into residual fields. Section 96 is therefore a constitutional workaround for the limits of section 51.
The mismatch between the revenue-raising capacity of the Commonwealth (which collects most tax) and the spending responsibilities of the states (which run most services), which forces the states to rely on Commonwealth grants and gives the Commonwealth leverage.
Referrals and cooperative federalism
Power can also shift by agreement. Under section 51(xxxvii), states can refer a matter to the Commonwealth, as occurred with terrorism laws and parts of corporations law. Intergovernmental bodies such as National Cabinet (which replaced COAG in 2020) coordinate policy across jurisdictions, a model that became prominent during the COVID-19 pandemic when health and border powers, which are largely state residual powers, were managed through cooperation. This shows the balance is not only about Commonwealth dominance but also about negotiated cooperation.
Evaluating significance
A strong answer ranks the factors. Financial dominance is usually judged the most significant because it operates continuously and reaches even residual areas through tied grants. Judicial interpretation is the most far-reaching legally, because it permanently widens what the Commonwealth may do. Referrals and cooperation matter but are reversible and depend on political goodwill. Use a contemporary example, such as Commonwealth conditions on hospital or schools funding, to show the shift is ongoing.
A common task asks you to evaluate which factor mattered most. Work through it in steps.
Step 1: Set up criteria for significance
State your test: a factor is significant if it operates continuously, reaches into residual areas, and is hard to reverse. Naming criteria lets you justify the ranking.
Step 2: Apply the criteria to each factor
Financial dominance scores highly on all three (constant, reaches schools and hospitals via grants, entrenched since 1942). Judicial interpretation reaches far legally and is permanent but acts case by case. Referrals and cooperation are real but reversible and depend on goodwill.
Step 3: Rank with a contemporary example
Place financial dominance first, supported by current Commonwealth conditions on hospital or schools funding, then judicial interpretation, then referrals.
Step 4: Conclude with a judgement
Conclude that the shift is structural and ongoing, driven mainly by money and reinforced by interpretation, rather than by any change to the text of the Constitution.
The federal balance shifted overwhelmingly without amending the Constitution. Only the 1946 social services referendum and the 1967 referendum expanded Commonwealth power by text. The real drivers were High Court interpretation and financial arrangements, not section 128 changes.
Exam-style questions
Questions in the style of SCSA exam questions on this dot point, each with a worked answer. They are written by ExamExplained unless tagged "Past paper"; the year shows the paper a question is modelled on.
WACE 2021-style18 marksAnalyse the factors that have changed the balance of power between the Commonwealth and the states since federation and evaluate their relative significance.Show worked answer →
An 18 mark response needs the main factors, supporting cases or examples, and a ranked evaluation.
Judicial interpretation. The Engineers' Case 1920 required broad reading of section 51; Tasmanian Dam 1983 expanded external affairs; WorkChoices 2006 expanded the corporations power. These permanently widened federal reach without amendment.
Financial dominance. The uniform income tax scheme from 1942 (upheld in the Uniform Tax Cases) plus control of the GST created vertical fiscal imbalance, leaving the states dependent on Commonwealth grants.
Section 96 tied grants. Conditional grants let the Commonwealth attach policy strings in residual areas like schools and hospitals.
Referrals and cooperation. States can refer powers under section 51(xxxvii); National Cabinet coordinates policy, prominent during COVID-19.
Evaluation. Rank financial dominance as most significant (continuous and reaching residual areas), judicial interpretation as the most far-reaching legally, and referrals as reversible. Markers reward cases, a contemporary example, and a clear judgement.
WACE 2023-style6 marksExplain how section 96 grants have allowed the Commonwealth to influence areas of residual state responsibility.Show worked answer →
A 6 mark response needs the mechanism and a worked example.
Mechanism. Section 96 lets the Commonwealth grant money to states on such terms and conditions as Parliament thinks fit. This permits tied (conditional) grants, where funding is attached to policy requirements.
Effect. Because of vertical fiscal imbalance the states rely on this money, so they accept conditions in areas the Commonwealth cannot legislate on directly, such as school curriculum standards or hospital performance targets. The Commonwealth thereby influences residual fields without a head of power.
Markers reward the section 96 mechanism, the link to fiscal dependence, and a concrete residual-area example.