Courts and Judiciary in Australia

Introduction

The Australian court system is a federal hierarchy of courts established under the Commonwealth Constitution and the constitutions of the six states and two self-governing territories. The system reflects the federal structure of the Commonwealth: there is a system of federal courts (the High Court, the Federal Court, and the Federal Circuit and Family Court), and a separate system of courts in each state and territory, with the High Court of Australia sitting at the apex of both. The Australian judiciary is independent, with constitutional protections for judicial tenure and remuneration, and is increasingly recognised as having a distinctive institutional character shaped by the Chapter III separation of judicial power.

The High Court of Australia

The High Court of Australia is the highest court in the Australian judicial hierarchy. It was established in 1901 under s 71 of the Commonwealth of Australia Constitution Act 1900 (Imp), which vests the judicial power of the Commonwealth in the High Court and in such other federal courts as Parliament creates, and in such state courts as are invested with federal jurisdiction.

The High Court consists of seven Justices, including the Chief Justice. Justices are appointed by the Governor-General in Council on the advice of the federal government, with the Attorney-General playing a central role in the selection process. The Constitution provides that Justices may not be removed except by the Governor-General on an address from both Houses of Parliament on the ground of proved misbehaviour or incapacity (s 72(ii)). Their remuneration may not be diminished during their continuance in office (s 72(iii)).

The Court’s jurisdiction is divided into original and appellate. The original jurisdiction is entrenched by s 75 of the Constitution, which provides that the High Court has original jurisdiction in all matters:

• Arising under any treaty;
• Affecting consuls or other diplomatic representatives;
• In which the Commonwealth, or a person suing or being sued on behalf of the Commonwealth, is a party;
• Between states, or between residents of different states, or between a state and a resident of another state;
• In which a writ of mandamus or prohibition or an injunction is sought against an officer of the Commonwealth.

This “entrenched” jurisdiction cannot be removed by Parliament. The High Court also has appellate jurisdiction from the Federal Court, the Federal Circuit and Family Court, and state Supreme Courts, including the state Courts of Appeal. Leave or special leave to appeal is required (s 73); the High Court grants special leave only where a question of law is of public importance or where the interests of justice require it.

The High Court performs a critical constitutional function: it interprets the Constitution, resolves disputes about the limits of Commonwealth and state legislative power, and ensures that the separation of judicial power mandated by Chapter III is maintained.

The Federal Court of Australia

The Federal Court of Australia was established by the Federal Court of Australia Act 1976 (Cth) and commenced operations in 1977. It was created to relieve the High Court of its original federal jurisdiction and to provide a single national court for the exercise of federal jurisdiction.

The Federal Court has both original and appellate jurisdiction. Its original jurisdiction is conferred by over 150 federal statutes and includes matters arising under:

• The Corporations Act 2001 (Cth);
• The Competition and Consumer Act 2010 (Cth) (including the Australian Consumer Law);
• The Bankruptcy Act 1966 (Cth);
• The Native Title Act 1993 (Cth);
• Federal industrial law (now under the Fair Work Act 2009 (Cth));
• The Administrative Decisions (Judicial Review) Act 1977 (Cth); and
• Federal taxation, migration, and intellectual property legislation.

The Full Court of the Federal Court hears appeals from single judges of the Federal Court and from the Federal Circuit and Family Court in certain matters. Appeals from the Full Court lie to the High Court only by special leave.

The Federal Court has a national jurisdiction: it operates throughout Australia, hearing matters wherever the parties or the subject matter are located, and its judgments are binding throughout the Commonwealth. The Court is organised into five national practice areas: Administrative and Constitutional Law and Human Rights; Commercial and Corporations; Employment and Industrial Relations; Native Title; and Intellectual Property.

The Federal Circuit and Family Court of Australia

The Federal Circuit and Family Court of Australia (FCFCOA) was created by the Federal Circuit and Family Court of Australia Act 2021 (Cth), which merged the former Family Court of Australia and the Federal Circuit Court of Australia into a single, unified court with two divisions.

Division 1 (the former Family Court) handles the most complex family law matters, including parenting disputes involving international parental child abduction, complex property settlements, and appeals from the Federal Circuit Court (Division 2). Division 2 (the former Federal Circuit Court) handles less complex family law matters and the general federal law work of the old Federal Circuit Court, including migration, bankruptcy, consumer protection, and employment law.

The FCFCOA was established to address long-standing issues with delays, duplication, and inefficiency in the family law system. The legislation provides for a single point of entry for all family law matters, with cases allocated between the two divisions based on their complexity. The Chief Justice may issue practice directions to regulate the allocation of work between the divisions.

State and Territory Courts

Each of the six states and two self-governing territories maintains its own court system, structured in a three-tier hierarchy.

The Supreme Court is the superior court of each state and territory. It has unlimited civil jurisdiction (subject to statutory limits) and the most serious criminal jurisdiction (trial of indictable offences). Each Supreme Court has a Court of Appeal (or, in some states, a Court of Criminal Appeal as a separate entity) that hears appeals from single judges of the Supreme Court and from the lower courts. In New South Wales, the Court of Appeal and the Court of Criminal Appeal are divisions within the Supreme Court. The state and territory Courts of Appeal are the final courts of appeal for state law matters, subject to the possibility of special leave to appeal to the High Court.

The District Court (or County Court in Victoria) is the intermediate court. It has jurisdiction over most criminal matters except the most serious (murder, treason) and civil matters up to a monetary threshold (typically AUD 750,000–1.25 million, depending on the jurisdiction). Magistrates Courts (or Local Courts) are the lowest tier of the state court system, dealing with summary criminal offences, committal hearings for indictable offences, and small civil claims (typically up to AUD 100,000–150,000).

Judicial Appointments and Independence

Judicial appointments in Australia are made by the executive government. The Commonwealth Attorney-General is responsible for advising the Governor-General on appointments to the High Court, the Federal Court, and the FCFCOA. In recent years, there has been an increased emphasis on consultation, including with the legal profession, the states, and the Attorneys-General of the states and territories, but the final decision rests with the Commonwealth government.

Judicial independence is protected by constitutional and statutory means. The Chapter III separation of judicial power — derived from ss 71–75 of the Constitution — prohibits the non-judicial branches of government from exercising judicial power and prohibits federal courts from exercising non-judicial power. The Kable v DPP (NSW) (1996) 189 CLR 51 doctrine — known as the Kable doctrine — extended the separation of powers principle to state courts. The High Court held in Kable that state legislation that purports to confer on a state court a function that is incompatible with its institutional integrity as a repository of federal jurisdiction is invalid. The Kable doctrine has been applied to invalidate state laws that required courts to keep people in preventive detention or to make non-judicial decisions.

Judicial education and support are provided by the National Judicial College of Australia and the Australian Judicial Commission (established under the Australian Judicial Commission Act 2001 (Cth)), which are responsible for judicial education, research, and publishing on judicial decision-making. The Australian Institute of Judicial Administration (AIJA) also contributes to the development of judicial administration.

Specialty Courts and Tribunals

Australia has developed a range of specialty courts and tribunals to handle specific categories of disputes. These include the Federal Court’s National Native Title Tribunal (native title determinations), the Administrative Appeals Tribunal (AAT) (review of Commonwealth administrative decisions), state-based civil and administrative tribunals (e.g., the NSW Civil and Administrative Tribunal, VCAT in Victoria), and specialist courts such as the Koori Court (in Victoria) and the Drug Court (in NSW and other states), which operate on therapeutic jurisprudence principles.

Conclusion

The Australian court system is a complex but coherent judicial hierarchy that serves a federal nation. The High Court stands at the apex, ensuring constitutional integrity and legal uniformity, while the state and federal courts below it manage the vast majority of criminal and civil cases. The Australian judiciary is independent, professional, and increasingly diverse. The Kable doctrine has added a distinctly Australian dimension to the separation of judicial power, protecting the institutional integrity of courts throughout the federation. The system as a whole is robust, accessible, and continues to evolve in response to the changing needs of Australian society.