As Australia approaches the Reserve Bank of Australia’s (RBA) upcoming board meeting on 29 September 2026, financial markets and mortgage holders are bracing for what could be a pivotal shift. Following months of speculation and a steady hold at 4.35%, the conversation has sharply pivoted from “if” rates will rise to “when.”
Major economic indicators, stubborn core inflation, and shifting stances from the big four banks have put a September rate hike firmly on the table.
What is Driving the Shift Toward a Rate Rise?
For much of the year, major bank economists held mixed views on the trajectory of the official cash rate. However, recent economic data and commentary from RBA officials have forced a consensus.
- Sticky Underlying Inflation: While annual headline inflation showed some easing, the RBA’s preferred measure—trimmed mean inflation—has remained stubbornly high at 3.6%, sitting well above the central bank’s 2–3% target band.
- Global Pressures and Oil Prices: Escalating tensions in the Middle East have pushed global oil prices higher, stoking renewed fears that transport and energy costs will flow back into domestic inflation figures.
- Hawkish RBA Commentary: Governor Michele Bullock and senior RBA officials have increasingly signaled that upside risks to inflation are materialising, effectively retiring notions of an imminent policy easing cycle.
Major Bank Predictions: What Do the Experts Say?
Market pricing reflects a high probability of a move, with financial markets pricing in a strong likelihood of a 25-basis-point increase (taking the cash rate from 4.35% to 4.60%).
- Commonwealth Bank (CBA) & Westpac: Brought their calls forward, now forecasting a 25 basis point hike to 4.60% at the September meeting.
- NAB: Early among the major banks to pencil in a September increase to 4.6%, warning that persistent core inflation leaves little room for a prolonged pause.
- ANZ: Expects a September hike to 4.60%, but remains unique in warning that back-to-back increases (with another following in November) could push the cash rate as high as 4.85% by the end of the year.
What a Rate Rise Means for Your Mortgage
If the RBA lifts the official cash rate by 0.25% to 4.60% on 29 September and lenders pass it on in full, household budgets will feel the squeeze once again.
- The Numbers: For a standard owner-occupier with a $600,000 loan (assuming 25 years remaining), a 25-basis-point increase adds roughly $76 to $91 extra per month to minimum repayments, depending on your lender’s variable rate structure.
- Savings and Term Deposits: While borrowers face higher interest expenses, savers can generally expect to see higher returns on cash savings and term deposits, though these adjustments often lag behind lending rate hikes.
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How to Prepare Ahead of 29 September
With the RBA board meeting scheduled for Tuesday, 29 September, reacting impulsively to headline news is rarely the best strategy. Whether you are a homeowner looking at your mortgage health or an investor evaluating portfolio diversification:
- Know Your Numbers: Calculate precisely how a 25bp (or cumulative 50bp) increase impacts your monthly cash flow.
- Review Your Rate: Lenders do not always move uniformly, and fixed-rate products have already begun shifting upward. Shop around or speak with a broker to ensure your home loan remains competitive.
- Focus on the Long Term: Interest rate cycles fluctuate, but a resilient financial plan is built to weather both hikes and cuts without requiring constant tinkering.
Frequently Ask Questions:
When is the next RBA interest rate decision?
The Reserve Bank of Australia’s next monetary policy board meeting is scheduled for Tuesday, 29 September 2026. The official decision and statement will be released at 2:30 PM AEST, followed by Governor Michele Bullock’s media conference at 3:30 PM.
How much will a 0.25% rate rise add to a home loan?
If the RBA increases the official cash rate by 25 basis points (from 4.35% to 4.60%) and lenders pass it on in full, minimum monthly repayments on a standard $600,000 variable mortgage (with 25 years remaining) will increase by roughly $76 to $91 per month, depending on your lender.
What are the major banks predicting for September?
Major institutional forecasts have largely converged. Most major lenders—including the Commonwealth Bank, NAB, and Westpac—are forecasting a 25-basis-point rate hike at the September meeting. ANZ also expects a September increase, though it stands out by warning that a subsequent hike could follow later in the year.