The courts are the part of Australia's system of government that interprets and applies the law. Together they make up the judiciary, one of the three arms of government alongside the parliament and the executive. For the citizenship test, the key ideas to understand are what the judiciary does, how the courts are arranged from highest to lowest, and why the judiciary is kept separate from the government.
What is the judiciary in Australia?
The judiciary is the system of courts and judges that interprets and applies the law in Australia. It is one of the three arms of government: the parliament (the legislature) makes the laws, the government (the executive) puts the laws into action, and the judiciary applies those laws by deciding cases in court. Judges and magistrates make their decisions based only on the law and the facts of each case, independently of the parliament and the government.
Keeping these roles separate is known as the separation of powers, and it is a fundamental part of Australia's democracy.
What is the role of the courts in Australia?
The role of the courts is to apply and interpret the law, decide whether a person has broken the law, settle disputes, and ensure everyone is treated equally under the law. Courts determine guilt or innocence in criminal cases, resolve disagreements in civil cases, and decide appropriate penalties. A central principle is that everyone — including the government itself — is equal before the law and must obey it. This is known as the rule of law.
Because the courts apply the same law to everyone, no person is above the law and no one is punished except according to the law.
What is the court hierarchy in Australia?
Australia's courts are arranged in a hierarchy from the lowest courts up to the High Court of Australia. At the local level are the Magistrates' Courts (also called Local Courts), which handle less serious matters. Above them are the intermediate courts — the District Court or County Court in most states. Each state and territory then has a Supreme Court, which is its highest court. At the very top sits the High Court of Australia, the highest court in the country, which can hear appeals from all other courts.
More serious cases and appeals move up through this hierarchy, with the High Court having the final say.
What is the High Court of Australia?
The High Court of Australia is the highest court in the country. It is the final court of appeal, meaning its decisions cannot be appealed to any other court, and it is the only court that can interpret the Australian Constitution and decide whether laws are constitutionally valid. The High Court was established by the Constitution and is made up of seven justices: the Chief Justice and six other justices.
Its role in interpreting the Constitution makes it especially important to how Australia is governed.
What is the difference between federal and state courts?
Federal courts deal with matters under federal (national) law, such as immigration, family law, and corporations, while state and territory courts deal with matters under their own state or territory laws, including most criminal cases. The main federal courts are the Federal Court of Australia and the Federal Circuit and Family Court of Australia. Each state and territory runs its own system of courts, from local courts up to its Supreme Court. The High Court of Australia sits above both the federal and state systems as the nation's final court of appeal.
Which court hears a case depends on whether the matter falls under federal law or state law.
Why is the judiciary independent of the government?
The judiciary is kept independent of the government so that the law is applied fairly and equally to everyone, including the government itself. If judges could be directed by politicians, people could not trust that court decisions were based on the law rather than political interests. Independence means judges decide cases free from political pressure, which protects the rule of law and the rights of individuals.
This independence is part of the separation of powers and is one of the democratic principles you may be asked about in the citizenship test. You can practise Government and the Law questions in our topic-based practice and test yourself with a full mock test.