Reserve Bank of Australia deputy governor Andrew Hauser has told investors that the bank faces a tougher inflation profile than it expected in August, a development that has pushed markets to reassess the likelihood of another interest rate increase at the RBA meeting on November 3. Hauser delivered the comments at a Citi conference in Sydney, saying staff were finalising updated forecasts and that several factors had pushed the inflation outlook higher.

What Hauser said and why it matters

Hauser said the inflation outlook looked "materially worse" than the central bank projected two months ago. He cited rising oil prices, higher costs for some technology components linked to the artificial intelligence and data boom, and domestic capacity pressures as contributors to upward price pressures. The remarks underline an ugly trade off for the RBA, between cooling demand to restrain inflation and the risk of causing further weakness in activity and employment.

That shift in the RBA's internal assessment matters because the bank publishes fresh economic projections at the same time as it decides on interest rates. Markets and mortgage holders now face renewed uncertainty. Traders have already adjusted pricing to reflect a higher probability that the RBA will tighten policy again in early November, reversing some of the easing in expectations seen after September.

Market and household ripple effects

Financial markets typically react quickly to central bank signals. Since Hauser's public comments investors have pushed up the chances of a 25 basis point rise next month. That would lift the official cash rate from its current level and feed through to borrowing costs for households and businesses.

For many Australian mortgage borrowers the prospect of another rise is meaningful. Each 25 basis point increase translates into a noticeable cut in borrowing capacity for new and existing borrowers, tightening household budgets already strained by higher energy and grocery bills. Analysts and mortgage brokers warn renewed rate pressure could slow consumer spending, add to mortgage stress among recent buyers and weigh on housing activity.

Implications for businesses and investment

Higher for longer rates also reshape corporate decisions. Firms that planned expansion financed with debt must now reprice projects. Smaller firms with tighter margins face a double squeeze from higher input costs and more expensive credit. At the same time Hauser and other RBA officials have argued that inaction could allow inflation expectations to become entrenched, raising long term costs for the economy.

Some sectors stand to be affected more than others. Construction and real estate are especially sensitive to mortgage rates, while energy exposed businesses could see further cost pass through if oil prices remain elevated. Conversely, sectors less reliant on domestic financing, or those able to pass on higher costs quickly, will be better placed to absorb the change.

Policy choices ahead of the November meeting

The RBA board will weigh Hauser's signals against new data, including the Australian Bureau of Statistics quarterly inflation print scheduled ahead of the bank's meeting. If underlying inflation prints come in higher than expected, the board will face stronger pressure to act. Policymakers will consider the pace of wage growth, labour market slack, and whether price increases are broad based or concentrated in volatile items such as energy.

Raising rates further risks deepening weakness in the economy, including slower business investment and higher unemployment. Holding rates risks allowing inflation to remain above target for longer, which could embed higher wage demands and push up long term interest rates. That blunt trade off is the core of the debate played out in Hauser's remarks.

How investors and companies are responding

Portfolio managers and banks updated their models after Hauser's comments, with some traders increasing the odds of a November hike. Corporate treasurers are revisiting hedging and refinancing plans, while advisers to small and medium enterprises are urging clients to stress test cash flows against higher borrowing costs.

Business confidence is likely to be tested if rate expectations remain elevated. Investment projects that are dependent on a low interest rate environment, such as speculative property development or highly leveraged buyouts, may be delayed or rescoped. Sectors with near term government or export demand are less exposed to a domestic tightening cycle.

What to watch next

Key indicators to follow in the coming fortnight include the September quarter inflation release, labour market data and any additional RBA commentary. Financial markets will also watch global drivers such as oil prices and international risk events that can shift imported inflation. For households and firms the central question is whether the RBA judges that inflation risks are sufficiently entrenched to justify further tightening in early November.

Hauser's public warning has sharpened that question. The bank must now reconcile the need to restore price stability with the real cost that higher rates impose on borrowers, businesses and the broader economy. The November decision will be judged not only on the immediate data but on how convincingly the RBA can show that inflation has a credible path back to the target band.