
The interbank rate in Australia, also known as the cash rate, is the interest rate that banks charge each other for overnight borrowing. This rate is determined by the Reserve Bank of Australia (RBA) as part of its monetary policy to maintain price stability, promote full employment, and ensure the stability of the financial system. The RBA aims to keep inflation low and stable, averaging 2-3%, while maximizing employment. The interbank rate is also referred to as the market rate and represents the official live conversion rates for currency pairs. It is a floating exchange rate that is influenced by market factors such as interest rates, consumer and inflation data, and political climate.
| Characteristics | Values |
|---|---|
| Interbank rate definition | The constantly fluctuating price at which banks trade currencies with each other |
| Interbank overnight rate | The operational target for the implementation of monetary policy by the Reserve Bank of Australia |
| Interbank overnight rate definition | A weighted average interest rate on overnight unsecured loans between banks in the Australian dollar market |
| Interbank overnight rate calculation | Calculated from transactions settled in the Reserve Bank Information Transfer System (RITS) |
| Interbank overnight rate calculation start date | 9 May 2016 |
| Interbank rate and inflation | The Reserve Bank of Australia keeps inflation between 2-3% and employment as high as possible |
| Overnight Indexed Swaps Rates: Monthly Average: 3 Months in Nov 2022 | 3.010% pa |
| Overnight Indexed Swaps Rates: Monthly Average: 3 Months in Oct 2022 | 2.900% pa |
| Overnight Indexed Swaps Rates: Monthly Average: 3 Months record high | 7.370% pa in Jun 2008 |
| Overnight Indexed Swaps Rates: Monthly Average: 3 Months record low | 0.020% pa in Aug 2021 |
| Overnight Indexed Swaps Rates: Monthly Average: 6 Months in Nov 2022 | 3.220% pa |
| Overnight Indexed Swaps Rates: Monthly Average: 6 Months in Oct 2022 | 3.130% pa |
| Overnight Indexed Swaps Rates: Monthly Average: 6 Months record high | 7.500% pa in Jun 2008 |
| Overnight Indexed Swaps Rates: Monthly Average: 6 Months record low | 0.030% pa in Sep 2021 |
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What You'll Learn
- The interbank rate is the price at which banks trade currencies
- The Reserve Bank of Australia controls the interbank rate
- The interbank rate is also known as the market rate
- The interbank overnight rate is the operational target for the implementation of monetary policy
- Interbank rates are constantly fluctuating

The interbank rate is the price at which banks trade currencies
The interbank rate is the price at which banks buy and sell currencies between themselves. It is the rate at which major global banks are willing to exchange currencies and is the foundation for the foreign exchange market. The interbank rate is also known as the foreign exchange rate.
The rate is determined by supply and demand and is constantly fluctuating as banks trade large volumes of currencies. It is influenced by a multitude of economic and political factors, such as interest rates, inflation, and the stability of a country's government and economy. For example, if a country raises its interest rates, its currency may become more attractive to investors, increasing demand and thus strengthening the currency's interbank rate.
The interbank rate is the basis for currency exchange rates that individuals and businesses use when they exchange currencies. However, the rates offered to individuals and small businesses are usually less favourable than the interbank rate, as retail forex brokers and banks will include a markup to make a profit.
In Australia, the interbank rate is influenced by the Australian dollar's (AUD) exchange rate with other major currencies, particularly the US dollar (USD). It is also influenced by the economic health of the country and its trading partners. The Reserve Bank of Australia (RBA) does not directly control the interbank rate but can indirectly influence it through monetary policy decisions, such as adjustments to the official cash rate.
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The Reserve Bank of Australia controls the interbank rate
The Reserve Bank of Australia (RBA) is Australia's central bank. It is tasked with serving the community and promoting the economic prosperity and welfare of the people of Australia.
One of the RBA's key responsibilities is setting monetary policy to maintain price stability and full employment. This involves changing interest rates to smooth out fluctuations in the economy. The RBA controls the cash rate, which is the interest rate that banks charge each other for overnight loans. This rate is also known as the interbank rate.
The RBA's decisions on the cash rate can have significant implications for the broader economy. For example, by cutting the cash rate, the RBA can reduce mortgage stress and spur an increase in loan applications, as seen in early 2025. However, the RBA must also consider the potential impact on the housing market, urging banks to lend cautiously to avoid fuelling new vulnerabilities.
The RBA also plays a crucial role in maintaining the stability of Australia's financial system. It collaborates with other financial regulators to identify risks and ensure the system's safety and smooth operation, even during disruptive events. Additionally, the RBA operates at the core of Australia's payment system, facilitating transactions between different banks.
In summary, the Reserve Bank of Australia exerts control over the interbank rate as part of its mandate to promote economic stability and prosperity in the country. Its decisions on the interbank rate, or cash rate, are influenced by various factors, including inflation targets, employment levels, and the overall health of the financial system.
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The interbank rate is also known as the market rate
In Australia, the interbank rate is also referred to as the cash rate, which is the rate that banks charge each other for overnight borrowing. The Reserve Bank of Australia (RBA) sets the cash rate as part of its monetary policy to maintain price stability and full employment. The RBA also works to maintain a stable financial system, issues the nation's banknotes, operates the core of the payments system, and provides banking services to the government.
The RBA Rate Indicator shows market expectations of a change in the Official Cash Rate (OCR) and is updated at the end of each business day. The Overnight Cash Rate is calculated from transactions settled in the Reserve Bank Information Transfer System (RITS). The RBA also releases data on Overnight Indexed Swaps Rates, which are closing market rates.
Interbank rates are different from the rates that banks offer to consumers for international transfers. Banks often charge a margin on the interbank rate, which can result in higher costs for sending money overseas.
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The interbank overnight rate is the operational target for the implementation of monetary policy
The interbank overnight rate is the interest rate at which banks lend funds to each other at the end of the day in the overnight market. This rate is typically the lowest available interest rate and is only available to the most creditworthy institutions. Banks are required to keep a minimum amount of reserves to ensure liquidity in the banking sector. The interbank overnight rate helps banks meet their reserve requirements.
In Australia, the Reserve Bank of Australia (RBA) is responsible for setting monetary policy to maintain price stability and full employment. The RBA also works to maintain a stable financial system and issues the nation's banknotes. The cash rate, or interbank overnight rate, is the rate that the RBA uses to control the level of interest rates in the economy. The RBA collects data on the amount and weighted average rate at which banks transact in the domestic interbank market for overnight unsecured funds. This data is used to calculate the Interbank Overnight Cash Rate (IBOC), which is the RBA's operational target for monetary policy.
By setting the interbank overnight rate, the RBA can influence the broader economy. A change in the interbank overnight rate can affect short-term interest rate movements, which in turn impact economic indicators such as employment and inflation. The RBA aims to keep inflation low and stable while maintaining a high level of employment to promote a prosperous economy.
The interbank overnight rate is a crucial tool for the implementation of monetary policy as it allows the central bank to influence the cost of borrowing and lending between banks. This, in turn, can impact the availability of credit in the economy and influence economic activity. The RBA's use of the interbank overnight rate as an operational target for monetary policy demonstrates its active role in managing the Australian economy.
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Interbank rates are constantly fluctuating
Interbank rates, also known as market rates, are the official live conversion rates for a given currency pair. They represent the constantly fluctuating prices at which banks trade currencies with each other. These rates are influenced by market factors such as interest rates, consumer and inflation data, political climate, and fluctuations in the value of critical exports.
In Australia, the interbank overnight rate, also referred to as the cash rate, is the operational target for the implementation of monetary policy by the Reserve Bank of Australia (RBA). The RBA is responsible for setting monetary policy to maintain price stability, contribute to the stability of the payments system and the financial system, and promote economic prosperity and welfare for Australians. The cash rate is the rate that banks charge each other for overnight borrowing and is calculated as a weighted average interest rate on overnight unsecured loans between banks in the Australian dollar market.
The RBA Rate Indicator is a tool used to monitor market expectations of a change in the Official Cash Rate (OCR). It calculates the probability of an interest rate change based on market-determined prices in the ASX 30 Day Interbank Cash Rate Futures. This indicator is updated at the end of each business day, allowing market participants to track changes in expectations.
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Frequently asked questions
The interbank rate in Australia is the constantly fluctuating price at which banks trade currencies with each other. It is also known as the market rate.
Banks charge a margin on the interbank rate when sending money overseas. This can cost customers hundreds depending on the size of the transfer.
The interbank overnight rate, also known as the cash rate, is the interest rate on overnight unsecured loans between banks in the Australian dollar market. The Reserve Bank of Australia uses the interbank overnight rate as the operational target for implementing monetary policy.
As of November 2022, the overnight indexed swaps rates were 3.010% pa for 3 months and 3.220% pa for 6 months.


















