
Australia is a constitutional monarchy with a parliamentary democracy, where the monarch of Britain is also the head of state of Australia. The Australian Constitution does not mention the term 'monarch', but allegiance to the reigning monarch is important constitutionally, especially in determining whether a person is an alien under Section 51. The monarch has certain powers, such as the ability to dismiss the governor-general, and the governor-general acts as the monarch's representative in the Australian Defence Force.
| Characteristics | Values |
|---|---|
| Type of Monarchy | Constitutional monarchy, also referred to as a crowned republic |
| Monarch's Role | Nominal chief executive, but bound by convention to act on the advice of the Cabinet |
| Monarch's Powers | Significant "reserve" or "prerogative" powers to be used in times of extreme emergency or constitutional crises |
| Governor-General's Powers | Can exercise reserve powers in the absence of or contrary to advice |
| Oath of Office | Includes a promise of allegiance to the monarch, though this is not written into law |
| Oath of Citizenship | Previously included a statement of allegiance to the reigning monarch, but this was changed in 1994 |
| Succession Laws | Consistent across Commonwealth realms, with any changes requiring the consent of the parliaments of each realm |
| Royal Titles | The title of the monarch in Australia has been subject to debate and changes over time |
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What You'll Learn

The Australian Constitution and succession laws
Australia is a constitutional monarchy. The Australian Constitution and succession laws are complex and involve a mix of common law and legislation. The rules concerning succession to the throne are based on a form of primogeniture that favours males over females. Male heirs inherit, in order of birth, before any female heir, even if she was born first. A female heir may only inherit if she has no living brothers and no deceased brother with children.
The Australian Constitution, in Section 68, states that the "command-in-chief of the naval and military forces of the Commonwealth is vested in the governor-general as the Queen's [monarch's] representative." The governor-general has certain reserve powers, which they can exercise in the absence of or contrary to advice. The monarch has the power to dismiss the governor-general, as highlighted during the 1975 constitutional crisis.
Succession laws in Australia are not uniform across the country, with each state and territory having its own legislation. These laws govern the validity of wills, and eligible applicants can make a claim for provision or further provision against a deceased estate. The distribution of an estate depends on whether the deceased left a valid will, and if not, the assets are distributed according to intestacy provisions.
The Commonwealth of Australia Constitution Act, in Section 2, defines the sovereign of Australia as the heir and successor of Queen Victoria in the sovereignty of the United Kingdom. Changes to the UK's succession laws would affect Australia by changing this external fact. The Perth Agreement in 2011 brought about recent reforms to the succession, including removing the preference for male heirs and repealing the Royal Marriages Act 1772, which prevented the monarch from marrying a Roman Catholic.
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The role of the monarch
Australia is a constitutional monarchy, meaning that while the King is the head of state, his power is defined and limited by the Australian Constitution. The current monarch and head of state of Australia is His Majesty King Charles III. When the monarch dies or steps down, their oldest child takes their place.
The monarch's role is primarily symbolic and cultural, acting as a symbol of the legal authority under which all governments and agencies operate. The monarch appoints the Governor-General, who is his representative in Australia. The Governor-General is appointed on the advice of the Prime Minister. While the Governor-General does not need to consult with the King on matters like giving Royal Assent, the monarch does have the power to cancel a law within a year of the Governor-General giving it Royal Assent. This power has never been used in Australia.
The monarch has also been personally involved in issuing letters-patent for the creation of Australian honours. The Governor-General also has certain reserve powers, which they may exercise in the absence of or contrary to advice. The most prominent use of these powers was during the 1975 constitutional crisis when Governor-General Sir John Kerr dismissed the government of Gough Whitlam.
The concept of allegiance to the monarch remains important constitutionally, especially in the context of determining whether a person is an "alien" for the purposes of Section 51(xix). The sovereign is also the subject of songs and loyal toasts, and the royal anthem, "God Save the King", is played on official occasions when the monarch or a member of the royal family is present.
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The Governor-General's reserve powers
Australia is a constitutional monarchy, with a combination of written and unwritten rules comprising the sovereign, governors, and governor-general. The governor-general is appointed by the monarch and has certain reserve powers, which they may exercise independently, that is, in the absence of or contrary to advice. These reserve powers are rarely used, with only a handful of instances in history.
The governor-general has the power to appoint government officials, including the prime minister, other ministers, judges, and ambassadors. They can also dismiss a prime minister who has lost the support of the House of Representatives or refuses to resign or advise dissolution. Additionally, they have the power to refuse to dissolve the House of Representatives. The governor-general also acts as the commander-in-chief of the Australian Defence Force, although in practice, they follow the advice of the Minister for Defence.
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The monarch's involvement in Australian honours
Australia is a constitutional monarchy, with the current monarch being King Charles III, who has reigned since 8 September 2022. The monarch is represented at the federal level by the governor-general, who is assisted by a lieutenant-governor, generally the Chief Justice of the state's supreme court. The monarch appoints the governor-general on the advice of the prime minister and the state governors on the recommendation of the respective premiers.
The monarch has the power to issue letters-patent for the creation of Australian honours, and they may still confer some Imperial honours to Australians, such as the Royal Victorian Order. The monarch's involvement in the honours system has evolved over time. In 1976, Malcolm Fraser recommended to Queen Elizabeth II that the grade of Knight and Dame be added to the Order of Australia, which was implemented. However, in 1986, Prime Minister Bob Hawke advised removing this grade, and it was discontinued. The grade was briefly restored in 2014 on the advice of Tony Abbott, a prominent monarchist, but it was removed again in 2015 at the request of Prime Minister Malcolm Turnbull, who sought to amend the order's letters patent.
The sovereign and their family have participated in various ceremonies and events, including award ceremonies, Australia Day, and the openings of Olympic and other games. Members of the royal family have also made private donations to Australian charities, such as Queen Elizabeth II's donation to the Australian Red Cross Appeal after the Blue Mountains bushfires in 2009, and Prince William's donation to the same organisation during floods in 2023.
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Allegiance to the monarch
Australia is a constitutional monarchy, with the monarch as the locus of many oaths of allegiance. The oath of citizenship contained a statement of allegiance to the reigning monarch until 1994, when a pledge of allegiance to Australia and its values was introduced. However, the concept of allegiance to the monarch remains important constitutionally, especially in the context of determining whether a person is an "alien" per section 51(xix).
The prime minister, ministers, and parliamentary secretaries make an oath or affirmation of office on their appointment to a particular ministry, which traditionally includes a promise of allegiance to the monarch. The wording of this oath or affirmation is not written into law, and beginning with Paul Keating, all Labor prime ministers have dropped the reference to the sovereign.
All members of the Commonwealth Parliament and of the state and territory parliaments, as well as most magistrates, judges, police officers, and justices of the peace, are required by law to recite the oath of allegiance before taking their posts. This is in reciprocation of the sovereign's coronation oath, taken most recently by Charles III, who promised "to govern the Peoples of the United Kingdom of Great Britain and Northern Ireland [and] your other Realms ... according to their respective laws and customs".
The governor-general, as the monarch's representative, is vested with the command-in-chief of the naval and military forces of the Commonwealth. In practice, however, the governor-general does not play a part in the Australian Defence Force's command structure other than following the advice of the Minister for Defence. All personnel of the Australian Defence Force swear an Oath of Allegiance (or affirmation) to the Australian Monarch, pledging to "resist his (or her) enemies."
Popular royal symbolism emerged during the reign of Queen Victoria as a means of encouraging loyalty to the British Empire. The Crown symbolised the "imagined community of a global British people", with Prime Minister Joseph Lyons calling it "the great unifying element in the British Empire". Queen Elizabeth II stated in 1954 during her Australian tour that "the Crown is the human link between all the people who owe allegiance to me, an allegiance of mutual love and respect and never of compulsion".
In 2024, Australian Prime Minister Anthony Albanese declared his allegiance to King Charles III at the monarch's coronation, despite believing that Australia should have its own head of state. Albanese accepted the majority vote for Australia to remain a constitutional monarchy and reflected this sentiment when attending the coronation.
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Frequently asked questions
Yes, Australia is a constitutional monarchy.
A constitutional monarchy is a form of government in which a monarch is the nominal chief executive but is bound by convention to act on the advice of a cabinet. The monarch's power is limited by a constitution and an elected parliament.
The monarch has been involved in issuing letters-patent for the creation of Australian honours and has the power to dismiss the governor-general. The monarch also holds significant "reserve" powers, which can be used in times of extreme emergency or constitutional crisis.
The governor-general is the monarch's representative and holds the command of the naval and military forces of the Commonwealth. They also have certain reserve powers, which they can exercise independently of the advice of the Minister for Defence.




















