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Westpac joins the big four in tipping an RBA rate hike on 29 September

Westpac has become the last of the big four banks to forecast a Reserve Bank rate rise at the 29 September meeting, joining CBA, NAB and ANZ. Here's what a unanimous call means for first home buyers a week out from the decision.

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Unpack Property
23 September 20265 min read

For the first time this cycle, Australia's four major banks are reading from the same page on interest rates. Westpac has now joined CBA, NAB and ANZ in forecasting that the Reserve Bank will lift the cash rate at its meeting on 29 September, closing off what had been the last major bank still tipping a hold. With the decision about a week away, first home buyers weighing up a purchase or a pre-approval now have a clearer, if less welcome, picture of where borrowing costs may be heading next.

On this page (4 sections)

How the banks lined up

The cash rate has sat at 4.35% since the Reserve Bank's August meeting. NAB was first to call a September move back in late August, and Westpac was the last holdout, shifting only in the past fortnight after previously expecting a hold. CBA and ANZ have both brought their own calls forward from November to September in recent days, pointing to stronger than expected inflation and activity data.

  • All four major banks now expect a quarter point rise to approximately 4.6% at the September meeting.
  • ANZ is going further, forecasting a second rise in November that would take the cash rate close to 4.85% by year end.
  • CBA has also pushed out its expected timing for future rate cuts, now looking well into 2027 rather than this year.

Why forecasts have shifted so quickly

A few threads have come together at once. Underlying inflation, the measure the Reserve Bank watches most closely, has stayed firmer than officials expected through the September quarter. Rising global oil prices have added a fresh source of pressure on petrol and transport costs, which can flow through to broader inflation figures. On top of that, Reserve Bank governor Michele Bullock and deputy governor Andrew Hauser used a parliamentary hearing in mid-September to signal that current rates are only just back to what they consider a sensible level, language markets read as leaving the door open to another move.

It's worth remembering a bank forecast is not the same as a Reserve Bank decision. The board weighs the full run of data available to it at each meeting, and economists have revised their calls more than once already this year as new figures have landed. A hold in September remains possible even with all four majors now pointing the other way.

What this means for first home buyers

A unanimous forecast from the big banks does not guarantee a rate rise, but it is a reasonable prompt to check your own numbers before the decision lands. Lender serviceability assessments already build in a buffer above the advertised rate, so shifting expectations can affect how much a lender may be willing to approve even before the Reserve Bank meets.

  • If you have a pre-approval, check how it was assessed and whether it allows room for a further rate increase before it expires.
  • If you are still saving or comparing loans, build a buffer into your budget for repayments above today's rate rather than assuming your current quote holds indefinitely.
  • Speak with your lender or a mortgage broker about fixed, variable and split loan options. A broker can weigh those trade-offs against your own circumstances in a way general information like this cannot.

Run the numbers

Rather than guessing how a possible rate rise would affect you, it may help to test it directly against your own situation before the 29 September decision:

This article is general information only. It does not take into account your objectives, financial situation, or needs. Consider seeking independent financial advice before making financial decisions. See our disclaimer for full details.

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