
Preliminary Purchasing Managers' Index (PMI) data have left the Australian Dollar (AUD) steady, with AUD/USD trading near 0.7020 in early European trading on Friday after modest losses the day before. The figures were released by S&P Global. Its S&P Global Composite PMI fell from 51.3 in September to 47.7 in October, the weakest reading since March and the first contraction in private-sector activity since May.

At 49.7 in October, the Manufacturing PMI was slightly above September's 21-month low of 49.6, although it still signalled a second consecutive month of contraction. The Services PMI dropped from 51.9 in September to 47.8 in October, its lowest level since March and its first contraction since May. New business continued to expand, however, despite a marked slowdown in growth.
Remarks by Reserve Bank of Australia (RBA) monetary policy board member Andrew Hauser have prompted traders to increase bets on an RBA rate rise. Speaking on Wednesday, Hauser described the inflation outlook for the coming months as "materially worse". The Guardian reported that the likelihood of a rate increase at November's policy meeting had risen to 45%, compared with 30% before his comments. Such a move would be the fifth increase this year, taking the Official Cash Rate (OCR) target from 4.6% to 4.85%, the highest since the global financial crisis.
A recovering US Dollar (USD) could nevertheless limit further gains in AUD/USD. On Friday, the US 10-year Treasury yield climbed back towards 4.98%, having dropped by more than 10 basis points to a one-month low the day before. Safe-haven demand had previously put upward pressure on US bonds as the sell-off in technology and artificial intelligence shares deepened. With concerns mounting over the sustainability of AI investment, a major driver of US economic growth, financial markets have also pared back expectations of additional Federal Reserve rate increases.
Interest rates set by the Reserve Bank of Australia (RBA) are among the strongest influences on the Australian Dollar (AUD). Australia's abundant natural resources also make the price of iron ore, its largest export, an important driver. Other influences include economic conditions in China, Australia's biggest trading partner, alongside domestic inflation, economic growth and the trade balance. Investor sentiment matters too: an appetite for riskier assets, known as risk-on, supports AUD, whereas a preference for safe havens is described as risk-off.
By setting the interest rate at which Australian banks can lend to one another, the Reserve Bank of Australia (RBA) affects borrowing costs across the economy and, in turn, the Australian Dollar (AUD). Its primary objective is to keep inflation stable at 2-3%, raising or lowering interest rates as needed. Rates that are relatively high compared with those of other major central banks tend to support AUD; relatively low rates have the reverse effect. The RBA can also alter credit conditions through quantitative easing, which weighs on AUD, or quantitative tightening, which supports it.
As Australia's largest trading partner, China has a substantial influence on the Australian Dollar (AUD). A strong Chinese economy buys more Australian raw materials, goods and services, increasing demand for AUD and lifting its value. When Chinese growth falls short of expectations, the reverse applies. Surprises in Chinese growth figures, whether positive or negative, therefore frequently affect the Australian Dollar and its currency pairs directly.
According to 2021 figures, iron ore accounts for $118 billion in annual exports, making it Australia's biggest export, with China the main destination. Changes in its price can therefore influence the Australian Dollar. Rising iron ore prices generally lift AUD by increasing overall demand for the currency, while falling prices have the reverse effect. Higher prices also tend to make an Australian trade surplus more likely, providing further support for AUD.
Another influence on the Australian Dollar is the trade balance: the difference between a country's export earnings and its spending on imports. Strong overseas demand for Australian exports can lift the currency when the demand generated by foreign buyers exceeds Australia's spending on imports. A positive net trade balance therefore supports AUD, while a negative balance has the opposite effect.