
The Australian dollar is the official currency and legal tender of Australia and its external territories, as well as three independent Pacific Island states: Kiribati, Nauru, and Tuvalu. Introduced in 1966, the Australian dollar replaced the Australian pound at a conversion rate of two dollars to the pound. The Australian dollar is subdivided into 100 cents, with coins produced in denominations of 1 and 2 cents, 5, 10, and 20 cents, and 50 cents. The $1 and $2 banknotes were replaced by coins in 1984 and 1988, respectively. Australia has a floating exchange rate, which means that the value of the Australian dollar relative to other currencies is determined by market demand and supply. Various factors, including interest rates, influence the demand for and supply of the Australian dollar.
| Characteristics | Values |
|---|---|
| Sign | $ |
| Code | AUD |
| Abbreviation | A$ or AU$ |
| Official currency of | Australia and its external territories: Christmas Island, Cocos (Keeling) Islands, Norfolk Island |
| Kiribati, Nauru, and Tuvalu | |
| Introduced | 14 February 1966 |
| Replaced | Australian pound |
| Conversion rate | A$2 = A£1 |
| Subdivided into | 100 cents |
| Coins | 1 and 2 cents (bronze); 5, 10, and 20 cents (cupronickel); 50 cents (silver/cupronickel); 1 dollar (aluminium bronze); 2 dollar |
| Banknotes | Replaced by coins in 1984 ($1) and 1988 ($2) |
| First polymer banknote | Issued in 1988 as a $10 note |
| Exchange rate (as of 28 April 2025) | 1 AUD = 0.63990456 USD |
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What You'll Learn

History of Australian currency
The history of Australian currency can be traced back to before European colonization, when Aboriginal Australian communities traded using items such as tools, food, ochres, shells, raw materials, and stories. There was no standard currency. After colonization in 1788, New South Wales became a British colony and was provided with English currency for formal circulation, though the supply was insufficient, and alternative forms of exchange were often used.
In 1851, the discovery of gold led to the minting of Australia's own gold coins and spurred the development of banking. Commercial banks issued their own notes backed by gold, though people were often wary of them, especially after many banks failed in 1893. The Queensland Treasury also issued its own legal tender banknotes and prohibited private banks in the state from issuing their own notes. The Sydney Mint opened in 1854 and issued half sovereigns and sovereigns, with the Melbourne Mint beginning production in 1872.
At federation in 1901, the currency used in the Australian colonies that became states consisted of British silver and copper coins, Australian-minted gold sovereigns and half sovereigns, locally minted copper trade tokens, and private bank notes. In addition, the Queensland government issued treasury notes (1866-1869) and banknotes (1893-1910), which were legal tender in Queensland, and the New South Wales government issued a limited series of treasury notes in 1893.
In 1910, the Australian Notes Act introduced a national currency, the Australian pound, divided into 20 shillings, with each shilling containing 12 pence, making a pound worth 240 pence. The Act also prohibited the circulation of all state notes and demonetized them, giving full control over the issue of Australian notes to the Commonwealth Treasury. The Bank Notes Tax Act, also passed in 1910, imposed a tax of 10% per annum on all bank notes issued or re-issued by any bank in the Commonwealth, effectively ending the use of private currency in Australia.
In 1966, the Australian pound was replaced by the Australian dollar, a decimal currency, with a conversion rate of two dollars to the pound. The new currency was introduced on 14 February 1966, with the $1, $2, $10, and $20 denominations being the first to be issued. The Australian dollar became the official currency and legal tender of Australia, including all of its external territories, and three independent sovereign Pacific Island states: Kiribati, Nauru, and Tuvalu.
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Australian dollar denominations
The Australian dollar is the official currency and legal tender of Australia, including all of its external territories, and three independent sovereign Pacific Island states: Kiribati, Nauru, and Tuvalu. It is also the legal tender in Christmas Island, the Cocos (Keeling) Islands, and Norfolk Island.
The Australian dollar was introduced as a decimal currency on 14 February 1966, replacing the non-decimal Australian pound. The conversion rate was two dollars to the pound (A£1 = A$2). The $ symbol precedes the amount and has one or two strokes.
The coins currently in circulation are 5c, 10c, 20c, and 50c and $1 and $2. The 1c and 2c coins were withdrawn from circulation in 1992, and cash transactions are now rounded to the nearest 5c. The $1 and $2 banknotes were replaced by smaller coins of the same denomination in 1984 and 1988, respectively. The $5, $10, $20, $50, and $100 banknotes are still in circulation.
Australia was the first country to produce polymer banknotes, made of polypropylene polymer. These were introduced in 1988 as a response to the counterfeiting of $10 notes. The polymer notes are cleaner, more durable, and easily recyclable compared to paper notes.
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Australian dollar exchange rate
The Australian dollar is the official currency and legal tender of Australia and its external territories, as well as three independent Pacific Island states: Kiribati, Nauru, and Tuvalu. It was introduced as a decimal currency on 14 February 1966, replacing the non-decimal Australian pound. The conversion rate at the time was two dollars to the pound.
Since its introduction, the Australian dollar has undergone several changes in denominations and has been subject to various exchange rates. As of April 2025, the Australian dollar is the sixth most-traded currency in the foreign exchange market.
Exchange Rate Factors
Several factors influence the exchange rate of the Australian dollar, including interest rates, economic growth, commodity prices, and the country's trade relationships. The Australian dollar is often considered a commodity currency due to its strong correlation with commodity prices, particularly those of gold, iron ore, and coal, which are significant exports for the country.
Current Exchange Rate
Exchange rates fluctuate constantly, but as of 28 April 2025, 1.00 Australian dollar is equivalent to approximately 0.64 US dollars, or conversely, 1.00 US dollar is approximately equal to 1.56 Australian dollars.
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Factors influencing the Australian dollar exchange rate
The Australian dollar is a floating exchange rate currency, meaning its equilibrium price is largely determined by supply and demand factors. The exchange rate is sensitive to changes in both demand and supply, which can cause shifts in the equilibrium exchange rate.
One of the most significant factors influencing the Australian dollar is the level of interest rates set by the Reserve Bank of Australia (RBA). Higher interest rates can make the currency more appealing to investors, while lower rates can lead to a weaker Australian dollar. The interest rate differential between the RBA and other central banks, such as the Federal Reserve, can also impact the value of the Australian dollar relative to other currencies.
Commodity prices are another key factor affecting the Australian dollar. Australia is a resource-rich country, with significant exports of raw materials such as iron ore, coal, gold, agricultural products, and metals. As such, the Australian dollar tends to strengthen when commodity prices rise and depreciate when they fall. The health of the Chinese economy, Australia's largest trading partner, is particularly important in this context, as China is a major purchaser of Australian commodities. Positive or negative surprises in Chinese growth data can, therefore, have a direct impact on the Australian dollar.
Geopolitical events and global risk sentiment also influence the Australian dollar's value. Events such as trade tensions, political developments, and global conflicts can affect Australia's trade relationships and economic outlook, thereby impacting the currency. During periods of global risk aversion, the Australian dollar may weaken, while it can strengthen during periods of risk appetite.
Lastly, the Reserve Bank of Australia's interventions in the market can also affect the supply and demand for the Australian dollar. The bank's accommodative monetary policies, including low-interest rates, have supported economic recovery but have also had implications for the currency's exchange rate.
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Australian dollar as legal tender
The Australian dollar (sign: $; code: AUD) is the official currency and legal tender of Australia, including all of its external territories, and three independent sovereign Pacific Island states: Kiribati, Nauru, and Tuvalu. It was introduced as a decimal currency on 14 February 1966, replacing the non-decimal Australian pound, with the conversion rate of two dollars to the pound (A£1 = A$2).
The Australian dollar is also legal tender in its external territories: Christmas Island, Cocos (Keeling) Islands, and Norfolk Island. It was previously the legal tender in Papua New Guinea and the Solomon Islands until it was replaced by the kina and the Solomon Islands dollar, respectively, in the 1970s.
In Australia, the legal tender status of the Australian dollar is established by the Reserve Bank Act 1959 and the Currency Act 1965. According to these laws, Australian notes are legal tender throughout Australia without any limit on the amount. Similarly, Australian coins intended for general circulation are also legal tender, but only for specific denominations: 1c and 2c coins, which have been withdrawn from circulation but remain legal tender.
All previous issues of Australian banknotes and coins retain their legal tender status, even if they are no longer printed or in circulation. However, some retailers or individuals may be reluctant to accept older banknotes due to unfamiliarity or suspicion of counterfeiting. These older notes can be redeemed at commercial banks, which will exchange them at face value.
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Frequently asked questions
The Australian dollar (AUD) is the official currency and legal tender of Australia, including all of its external territories, and three independent sovereign Pacific Island states: Kiribati, Nauru, and Tuvalu.
The Australian dollar is subdivided into 100 cents. Coins are produced in denominations of 1 and 2 cents (bronze); 5, 10, and 20 cents (cupronickel); and 50 cents (silver, then cupronickel). The $1 and $2 banknotes were replaced by smaller $1 and $2 coins in 1984 and 1988, respectively. Australia also has polymer banknotes, which are made of polypropylene polymer and produced by Note Printing Australia.
Australia has a floating exchange rate, meaning that movements in the Australian dollar exchange rate are determined by the demand for and supply of Australian dollars in the foreign exchange market. When the value of the Australian dollar increases relative to another currency, it 'appreciates'; when it decreases in value, it 'depreciates'. As of April 28, 2025, 1 Australian dollar is worth approximately 0.64-0.65 US dollars.










































