The Australian Constitution Explained for the Citizenship Test
What the Australian Constitution is, when it began, what it does, and how it can be changed. A clear guide for citizenship test preparation.
The Australian Constitution is the foundation of the nation's system of government. It appears in several citizenship test questions, and understanding it makes many other topics — Parliament, the High Court, referendums — much easier to remember.
What Is the Constitution?
The Constitution is the legal document that sets out the basic rules for the government of Australia. It establishes the Commonwealth Parliament, sets out how the federal government works, and describes the powers of the Commonwealth and how they relate to the states.
When Did It Begin?
The Constitution came into effect on 1 January 1901, when the six separate British colonies united to form the Commonwealth of Australia. This event is known as Federation. Before it came into force, the Constitution was approved by the people of the colonies at votes, and then passed as part of an Act of the British Parliament.
What Does the Constitution Do?
Some of the key things the Constitution does include:
- Establishes the Commonwealth Parliament, made up of the King (represented by the Governor-General), the Senate and the House of Representatives
- Sets out the powers of the Commonwealth Parliament — for example, defence, foreign affairs, immigration, trade and commerce, taxation, and postal services
- Leaves other areas mainly to the states, such as schools, hospitals, police and public transport, although the Commonwealth can play a role in some of these through funding
- Establishes the High Court of Australia, which interprets the Constitution
- Divides power between the legislature, executive and judiciary — the separation of powers
Constitutional Monarchy
Under the Constitution, Australia is a constitutional monarchy. The King of Australia — currently King Charles III — is Australia's head of state. The King appoints the Governor-General as his representative in Australia, on the advice of the Prime Minister. The King's powers are limited by the Constitution, and in practice the Governor-General acts on the advice of government ministers in most matters.
Who Interprets the Constitution?
The High Court of Australia has the role of interpreting the Constitution and deciding disputes about it. If a law passed by Parliament goes beyond the powers given by the Constitution, the High Court can rule that the law is invalid.
How Is the Constitution Changed?
The Constitution can only be changed by a referendum. A proposed change must first be passed by Parliament and then approved by the Australian people in a vote. To succeed, it needs a double majority:
- A majority of voters across the whole nation, and
- A majority of voters in a majority of states (at least four of the six states)
This is a high bar, and most proposed changes have not succeeded. Because of this, the Constitution has been changed only a small number of times since 1901.
Key Facts to Remember for the Test
- The Constitution came into effect on 1 January 1901
- It sets out the basic rules for the government of Australia
- It can only be changed by a referendum
- The High Court interprets it
- Australia is a constitutional monarchy with the King as head of state
Practise Government Questions
Questions about the Constitution often appear alongside questions about Parliament and the courts. In CitiZen AU, you can practise the government and law category on its own, with explanations in English and Vietnamese, until these concepts feel natural.