Big Four Banks Now Back RBA Rate Hike to 4.85% After Hot CPI

All four major banks now expect an RBA rate hike of 25 basis points to 4.85% on 3 November after hotter-than-expected inflation data pushed NAB and CBA to abandon their pause calls.
By Branka Narancic -
Glowing 4.85% rate board over Sydney at sunset as an RBA rate hike looms after hot inflation data
  • All four major banks now forecast a 25 basis point RBA rate hike to 4.85% on 3 November, after NAB and CBA dropped their pause calls following the 28 October CPI release.
  • Market pricing for a hike jumped to about 80% from roughly 56% within the week, only five weeks after the 29 September increase to 4.60%.
  • Q3 trimmed mean inflation of 1.0% q/q (3.7% y/y) beat the RBA's August forecast of about 0.8%, and almost 60% of the basket is running above 3.5% annualised, so the surprise is broader than petrol.
  • The RBA sees a tighter labour market than it judged before, and a higher NAIRU means 4.7% unemployment will not deliver the disinflation needed, which keeps policy restrictive for longer.
  • The 25 November October CPI is the next test: card surcharge changes and a further 7% fuel rise could decide whether 4.85% is the peak or a staging point toward 5%.
Summarise with AI:

All four major banks now expect the Reserve Bank of Australia to lift the cash rate by 25 basis points to 4.85% on 3 November. NAB and CBA abandoned their pause calls after the Australian Bureau of Statistics (ABS) released hotter-than-expected inflation data on 28 October.

The shift happened fast. Market pricing for an RBA rate hike jumped to about 80% from roughly 56% earlier in the week, only five weeks after the 29 September increase to 4.60%.

Here is why the data tipped the banks, what the RBA’s thinking on labour market slack means, and how a 4.85% cash rate could flow through to your mortgage, your savings and the ASX.

Why did four banks converge on a November RBA rate hike?

Until this week, the big four were split two-to-two. Westpac and ANZ already had November pencilled in. Within hours of the CPI release, NAB and CBA joined them.

NAB’s Sally Auld, Gareth Spence and Taylor Nugent offered the clearest explanation. Trimmed mean inflation came in above the RBA’s August forecast, and they expect the November Statement on Monetary Policy (SMP) to revise underlying inflation higher. They see a pause after November, but not a declaration that tightening is over.

CBA’s Belinda Allen went further and said a cash rate above 5% cannot be ruled out. At 4.85%, the cash rate would sit about 150 basis points above the RBA’s neutral estimate of roughly 3.4%. The neutral rate is the level that neither speeds up nor slows down the economy.

CBA’s view carries weight partly because of its scale: the bank reported a CBA record profit of $11.0bn cash NPAT for FY26, with a loan loss rate of just 8bps.

Institution Position Core reasoning
NAB Hike to 4.85% (changed view) Trimmed mean above RBA forecast; NAIRU likely revised up
CBA Hike to 4.85% (changed view) Demand needs restraining; above 5% possible
Westpac Hike Sticky underlying inflation, energy-cost risks
ANZ Hike to 4.85% 1.0% trimmed mean strengthens tightening case
VanEck Sceptical of near-certainty RBA may wait to assess September move
Global X Pressure for a hike rising Underlying inflation concerning; surcharge price resets

The real argument is not about whether inflation is too high. It is about whether the RBA should follow September’s move immediately.

The counterargument Russel Chesler of VanEck argued the RBA could wait to see how the 29 September hike works through, and that markets may be overreacting in pricing a hike as near-certain.

Marc Jocum of Global X ETFs takes the other side, saying the inflation outcome raises pressure for a hike. With every major bank aligned, you should treat a hike as the base case. The dissent tells you the outcome still rests on RBA judgement, not arithmetic.

What does the RBA’s labour market reassessment and NAIRU change?

Unemployment has climbed to 4.7%, its highest since late 2021 and 60 basis points above the start of the year. Yet Governor Michele Bullock said the labour market “seems a little tighter than we had previously judged.”

That looks like a contradiction. It is not.

What is NAIRU, and why does it matter here?

NAIRU stands for the non-accelerating inflation rate of unemployment. It is the jobless rate at which inflation holds steady. If unemployment sits above it, there is spare capacity; if it sits below, there is not.

NAB expects the November SMP to lift the RBA staff’s NAIRU estimate. The RBA has also pointed to weak productivity and domestic capacity pressures. The logic runs in three links:

  • Tighter capacity: the economy has less room to grow without pushing up prices.
  • Higher NAIRU: 4.7% unemployment delivers less disinflation than the RBA once assumed.
  • Longer restrictive policy: unemployment must stay higher for longer, or rates must rise further, to return inflation to target by early 2028.

The August SMP already had underlying inflation above 3% until around mid-2027. A rising jobless rate does not guarantee relief on rates. If the RBA believes there is less slack, you should expect it to tolerate more labour market pain before easing.

The November Statement on Monetary Policy will be read closely for NAIRU and inflation revisions, much as RBA statement signals on tightening bias drove positioning in rate-sensitive equities and the Australian dollar in August.

How did fuel, travel and fruit shape the September CPI?

The headline surprise came largely from the petrol bowser and the holiday booking.

Measure Result Expected Comment
Q3 headline CPI 1.3% q/q, 3.9% y/y NAB 1.2% q/q, 3.9% y/y Near forecasts
Q3 trimmed mean 1.0% q/q, 3.7% y/y Consensus 1.0% q/q, 3.6% y/y RBA August forecast about 0.8% q/q
September monthly CPI 4.3% y/y 4.2% y/y Fuel and travel led

The ABS monthly trimmed mean series shows 3.6% annually (3.59%), slightly below the quarterly 3.66%. The two series are measured differently, so the gap is not an error. September’s monthly drivers included:

  • Automotive fuel: up 9.4% in the month and 23.6% over the year.
  • Domestic holiday travel and accommodation: up 8.0% on school holidays and major sporting events.
  • Recreation and culture: up 3.8%, with transport up 8.7% annually.
  • Fruit: rising more than normal seasonal patterns.

Key September Inflation Drivers

Signal or noise? What the trimmed mean strips out

The trimmed mean removes the biggest price moves each period, which excluded fuel this time. Travel and fruit stayed in. Grocery prices excluding fruit and vegetables rose only 2.2%, and market services excluding rents rose just 0.15% in the month.

The breadth is harder to dismiss. Almost 60% of the basket is running above 3.5% annualised. Services inflation sits at 4.1%, non-tradables at 4.5%, housing at 5.2%, and electricity jumped 12.8% after rebates ended.

The fuel spike may wash out if oil falls. The breadth tells you the RBA is looking past petrol to services and housing costs that hit your budget more persistently.

What would 4.85% mean for borrowers, savers and the ASX, and what comes next?

A move to 4.85% would land unevenly across households and portfolios.

Area Likely implication of 4.85%
Mortgage holders Higher variable repayments; less room for discretionary spending
Fixed-rate borrowers No immediate change; refinancing risk rises at rollover
Savers Higher deposit returns where banks pass the rise on
Banks Possible early margin support; weaker credit growth and arrears risk
Property Lower borrowing capacity weighs on prices and transactions
Retail Negative for discretionary spending
ASX Higher discount rates weigh on long-duration growth stocks, REITs and leveraged firms
Exporters Possibly more resilient if commodities and the AUD offset
AUD Could find support if the hike was not fully priced

If you hold a variable mortgage, another quarter-point rise would lift repayments again within weeks.

For lenders, a higher cash rate cuts both ways: net interest margins may get early support, but the bank earnings season showed guidance on deposit competition and bad debts matters more to share prices than headline profit.

The risks to the hike case

The September hike has barely taken effect, and household stress is building. A reversal in fuel and travel prices would pull headline inflation lower. Unlike the 2023 cycle, the RBA is now responding to renewed inflation after an easing phase, with unemployment already higher.

The next test: October CPI on 25 November

October’s data will be messy. Card no-surcharge rules began on 1 October 2026, and while surcharges are not directly in the CPI, merchants folding them into listed prices could lift the figure. NAB also expects fuel to rise a further 7%.

  1. 3 November: RBA cash rate decision.
  2. The following week: November SMP, with NAIRU and inflation revisions.
  3. 25 November: ABS October monthly CPI.

That last release will show whether 4.85% is a final step or a staging point toward 5%.

Past performance does not guarantee future results. Forecasts are subject to market conditions and may change based on economic developments.

What the November call settles, and what it leaves open

The case for a hike rests on the RBA seeing less slack and sticky underlying inflation, not on petrol alone. The trade-off is plain: act again to keep inflation expectations anchored, or hold back to spare stretched households and a slowing economy.

Three dates will define the answer: the 3 November decision, the SMP’s revisions to NAIRU and inflation, and the 25 November CPI.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions.

Frequently Asked Questions

What is NAIRU and why does it matter for an RBA rate hike?

NAIRU is the non-accelerating inflation rate of unemployment, the jobless rate at which inflation holds steady. If the RBA lifts its NAIRU estimate, 4.7% unemployment delivers less disinflation than assumed, which supports keeping policy restrictive for longer.

Why did NAB and CBA change their RBA rate hike forecasts?

Trimmed mean inflation of 1.0% for the quarter came in above the RBA's August forecast of about 0.8%, and NAB expects the November Statement on Monetary Policy to revise underlying inflation higher. Westpac and ANZ already expected a November hike, so all four major banks now agree.

How would a 4.85% cash rate affect my variable mortgage?

Variable-rate borrowers would face higher repayments within weeks, leaving less room for discretionary spending. Fixed-rate borrowers see no immediate change but face refinancing risk when their fixed terms roll over.

When is the next RBA decision and what data follows it?

The RBA decision is on 3 November, followed by the November Statement on Monetary Policy the following week with NAIRU and inflation revisions. The ABS releases October monthly CPI on 25 November, which will show whether 4.85% is a final step or a staging point toward 5%.

Is the September inflation surge just a fuel price spike?

No. Automotive fuel rose 9.4% in the month, but almost 60% of the basket is running above 3.5% annualised, with services inflation at 4.1%, housing at 5.2% and electricity up 12.8%. The RBA is looking past petrol to more persistent cost pressures.

Branka Narancic
By Branka Narancic
Client Success Manager
Branka Narancic is Client Success Manager at StockWireX and Discovery Alert, and an active contributor to the News sections on both platforms, bringing more than a decade of experience across financial journalism, capital markets communications, and investor engagement. A founding contributor and former Editor of Companies and Markets at The Market Herald, she combines deep ASX market knowledge with a commercially focused approach to client success.
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