Key Highlights

  • The Board’s statement said housing prices have fallen in most capital cities and new housing loans have declined noticeably.
  • The Board targets inflation, not house prices, and judged that domestic capacity pressures kept underlying inflation around a percentage point above target.
  • Softer housing is partly evidence that policy is working, partly the result of other factors such as budget tax changes, and a risk the RBA judges most borrowers can withstand.

The Reserve Bank lifted the cash rate in September while acknowledging that housing prices were falling faster than expected, a combination that looks odd at first glance but follows from what the central bank is actually trying to achieve.

At first sight, the sequence seems back to front. In the same statement that announced a rate rise, the Reserve Bank of Australia's Monetary Policy Board noted that "housing prices have fallen in most capital cities" and that "new housing loans have declined noticeably". If property is already weakening, why push borrowing costs higher still?

The short answer is that the RBA does not set interest rates to target house prices. Its job is to keep inflation within the 2–3% target range, aiming for the 2.5% midpoint. Housing is one channel through which higher rates affect the economy, and one indicator the Board watches, but it is not the objective. Once that distinction is clear, the apparent contradiction largely dissolves.

What the Board saw in housing

The evidence of a softening market was clear in the RBA's own documents. The minutes of the 28–29 September 2026 meeting said established housing prices had fallen faster than expected and that "the cumulative fall in housing prices is likely to be greater than had been assumed." New housing loan commitments fell sharply, led by investors.

Assistant Governor (Financial Markets) Christopher Kent had already flagged the trend in an August fireside chat, noting that "Housing prices have declined in Sydney and Melbourne". As at August, national housing prices had been falling by about 0.5% a month over the previous three months, with four consecutive monthly falls. Kent also observed that the declines were not yet as steep as in 2018–19 or 2022.

Kent also said "tax changes announced in the federal budget appear to have contributed to reduced demand". That matters for interpretation: not all of the housing weakness can be attributed to interest rates.

Why the RBA raised rates anyway

The Board's focus was on inflation, which it judged was not coming down fast enough. The statement said "Inflation remains elevated" and that "some of the upside risks flagged in August are materialising."

Underlying inflation, measured by the trimmed mean, was 3.6% over the year to the June quarter 2026. Headline CPI, a separate and more volatile measure, was 4.0% in the year to August 2026. Governor Michele Bullock said underlying inflation had run at "about 3.5 per cent for the past six months", describing it as "a percentage point above our target".

Crucially, the RBA traced the source of that inflation to domestic demand outstripping the economy's capacity. "Inflation is too high and has been driven by domestic capacity pressures," Bullock said. The minutes recorded that staff judged the underlying inflation surprise more likely reflected those capacity pressures than cost pass-through from the Middle East. Members concluded that "inflation remained too high."

Housing prices falling does not, by itself, relieve those pressures. The Board noted that "growth in business investment and debt is strong", and the minutes said June quarter GDP was a little stronger than expected, led by private business investment, up more than 10% over the year. Weak housing was one part of a wider picture in which overall demand still looked too strong for inflation to settle.

There is another way to see the combination: falling house prices are partly a sign that tighter policy is doing what it is meant to do. Kent said in August that "the three cash rate increases earlier this year are having their intended effects" and that "monetary policy in Australia is somewhat restrictive".

Higher interest rates reduce how much people can borrow and make property less attractive to investors. Softer housing prices and lower lending are among the expected consequences. From the RBA's perspective, those consequences are part of how tighter financial conditions eventually restrain spending and inflation, rather than a reason in themselves to stop.

The Board also faced the question of how restrictive policy really was. The minutes said financial conditions "remained somewhat restrictive", with the extent uncertain, and members argued that the previous 4.35% cash rate might be less restrictive than two years earlier if the neutral rate had risen. If so, the housing slowdown may have been happening despite policy being less tight than it appeared.

A supply problem rates cannot fix

Bullock also pointed to a longer-term issue in housing that sits outside monetary policy's reach. "We have a structural under supply of housing," she said at her media conference.

That comment is a reminder that lower prices do not necessarily mean the underlying imbalance between housing supply and demand has eased. A shortage of homes relative to demand is a structural matter. Interest rates can influence demand in the near term, but they do not build more dwellings.

Did the Board weigh the risks?

The RBA did consider the downside. The minutes show members weighed a 25 basis point increase against holding, with arguments for holding centred on downside risks to activity. Members judged those risks modest, and "all members judged that it was appropriate to increase the cash rate target by 25 basis points".

The minutes also assessed the resilience of borrowers. Very few were in negative equity, and the RBA judged that was likely to remain the case even if housing prices fell 20%. Arrears were low and loan impairments around historical lows, while scheduled mortgage payments were about 10% of household disposable income, near their 2024 peak. Under 2% of owner-occupier borrowers faced a cash flow shortfall.

The October Financial Stability Review reached a similar conclusion, finding that most mortgage holders should cope with harder conditions even if house prices fell sharply, though there are some pockets of stress.

The Board has kept its options open. The minutes said it would consider "increasing the cash rate target further if required", while Bullock said: "I'm not going to give you forward guidance." She also noted the full effect of rate changes takes 12 to 18 months, so the housing market is still absorbing earlier moves.

September CPI data are scheduled for release on 28 October, and the next cash rate decision is scheduled for 2.30 pm on 3 November 2026.

The bottom line

A rate rise alongside falling home values is not a contradiction once the RBA's mandate is kept in view. The Board targets inflation, not house prices, and in September it judged that domestic capacity pressures were keeping underlying inflation around a percentage point above target. Softer housing is partly evidence that tighter policy is working, partly the result of other factors such as budget tax changes, and, on the RBA's assessment, a risk that most borrowers are positioned to withstand.