Key Highlights

  • Three increases came between February and May, and September’s 25 basis point rise took the cash rate from 4.35% to 4.60%, effective 30 September.
  • The minutes cite a stronger-than-expected July monthly CPI and petrol and diesel prices in August that were 13% higher than forecast.
  • Bullock gave no forward guidance; market pricing implied about 15 basis points more by year-end, which are market expectations rather than RBA forecasts.

Putting September's increase in context, Governor Michele Bullock described it simply as "one more" after three earlier rises in 2026, a framing that presents the move as a continuation of an existing effort rather than a change of course.

Four words did a lot of work at the Reserve Bank of Australia's (RBA) media conference on 29 September 2026. Reflecting on the three cash rate increases delivered between February and May, Governor Michele Bullock summed up the latest decision in a single line: "This is one more."

The Monetary Policy Board had just lifted the cash rate target by 25 basis points, from 4.35% to 4.60%, effective 30 September. The decision was unanimous. It was the fourth increase of 2026, and the first move since the run of three rises that ended in the first half of the year.

Counting the rises

The official documents are consistent on the arithmetic. The Board's statement refers to "The three increases in the cash rate target since the beginning of the year", meaning the moves made before September. The Governor said there had been three earlier in the year, between February and May, and that September's rise was "one more".

The steps were not evenly spaced. Three rises came within the first five months of the year, followed by a pause over the winter months, before the September move took the cash rate target to 4.60%.

That pause matters for understanding how the Governor framed the decision. By describing September as "one more" rather than the start of a new phase, she linked it to the same objective that drove the earlier increases: bringing inflation back to the 2–3% target, and specifically to the 2.5% midpoint.

What the earlier rises were doing

In August, before the September decision, Assistant Governor (Financial Markets) Christopher Kent gave an assessment of how 2026's tightening was working. In a fireside chat titled "The Restrictive Stance of Monetary Policy", he said "the three cash rate increases earlier this year are having their intended effects".

He also described the overall setting at the time: "monetary policy in Australia is somewhat restrictive". Kent noted that lending and deposit rates had risen in line with the cash rate, that "Housing prices have declined in Sydney and Melbourne", and that the Australian dollar was about 5% higher on a trade-weighted basis since the start of 2026.

In other words, the earlier rises were being transmitted to the economy broadly as the RBA intended. So the September increase was not a response to policy failing to work. It was a response to new information suggesting more was needed.

What changed between May and September

The Board's statement pointed to developments since August: "some of the upside risks flagged in August are materialising." It concluded that "a further tightening in financial conditions is warranted to support a return of inflation to target".

The minutes of the 28–29 September meeting, published on 13 October, fill in the detail:

  • Inflation surprised: July monthly CPI was stronger than expected, particularly for market services.
  • Fuel costs jumped: domestic petrol and diesel prices in August were 13% higher than forecast.
  • Capacity pressures: staff judged the underlying inflation surprise more likely reflected domestic capacity pressures than the pass-through of Middle East-related costs.
  • Risk assessment: developments "pointed to an increase in the risk of persistently elevated inflation."

The statement, in paraphrase, also cited a broader Middle East conflict, higher global energy prices, AI-related demand lifting the prices of technology goods, and higher fuel costs spreading to other goods and services.

The latest figures show the gap the Board is trying to close. Headline CPI was 4.0% over the year to August 2026 (monthly CPI). Underlying inflation, measured by the trimmed mean, was 3.6% over the year to the June quarter of 2026. Bullock said underlying inflation had been "about 3.5 per cent for the past six months", which she described as "a percentage point above our target".

Why "one more" is not a promise of the last

The framing could be read as implying that September's increase was a final top-up. The Governor was careful not to say that.

"I'm not going to give you forward guidance," she said. On whether the move would be sufficient, she was candid: "Will it be enough? I don't know." And she set out the condition for further action: "The Board will increase interest rates again if that's what's needed to get inflation down."

The minutes reinforce the open-ended stance. The Board's strategy is to return inflation to target "in a timely manner", and it will consider "increasing the cash rate target further if required."

Financial markets were not treating September as the end point either. According to the minutes, market pricing at the time of the meeting implied about 15 basis points more by year-end and a further 30 basis points in the first half of 2027. These are market expectations rather than RBA forecasts.

The "one more" line came alongside a frank acknowledgement of who bears the burden. "Those who have mortgages, yes, this clearly impacts them and it hurts them," Bullock said.

She explained the purpose plainly: "Today's increase in interest rates is needed to slow the economy and return inflation to target." And she located the source of the problem domestically: "Inflation is too high and has been driven by domestic capacity pressures."

The minutes record that scheduled mortgage payments were about 10% of household disposable income, near their 2024 peak, while arrears remained low.

The bottom line

"This is one more" positions September's rise as part of the same campaign that began earlier in 2026, rather than a fresh departure. It acknowledges the cumulative weight of four increases while explaining the latest as a response to upside inflation risks that had begun to materialise. What the phrase does not do is close the door on further moves. The next cash rate decision is scheduled for 2.30 pm on 3 November 2026, with the next CPI release, covering September data, scheduled for 28 October.