Interest rate is one of Australia’s strongest search trends on September 28, with the Reserve Bank of Australia beginning its two-day Monetary Policy Board meeting. The fact that matters right now is straightforward: the official cash rate target is 4.35%, effective since August 12, 2026. The RBA says its next update is due at 2:30 pm AEST on September 29.
That means any article claiming the September decision has already been made is premature. Commentators can discuss expectations, but the rate remains 4.35% until the RBA publishes the decision. For households, the useful work is to understand what a 0.25 percentage-point move would mean if it happens—and what to check if the Bank holds instead.
What is the cash rate?
The cash rate is the overnight interest rate targeted by the Reserve Bank. It influences the cost of money throughout the financial system. Banks do not have to move every mortgage or savings rate by exactly the same amount, but changes in the cash rate often flow through to home loans, deposits and business credit.
The RBA uses monetary policy to pursue price stability and full employment. Its inflation target is 2–3% over time. The latest figures shown on the Bank’s homepage put annual CPI inflation for July 2026 at 3.5%, one of the data points the Board considers alongside jobs, wages, spending, financial conditions and the global economy.
When is the September decision?
The Board meeting runs on September 28 and 29. The RBA schedules the monetary-policy statement for 2:30 pm AEST on Tuesday, September 29, followed by a media conference at 3:30 pm.
Borrowers should wait for that statement rather than treating a bank economist’s forecast as the official outcome. Markets can assign probabilities to a move, but the Board’s published decision is what changes the cash rate.
What would a 0.25 percentage-point rise mean for a mortgage?
The effect depends on loan balance, remaining term and whether the lender passes the full change through. As a rough illustration, a borrower with a large variable-rate mortgage can see monthly repayments rise by tens or hundreds of dollars after a 25-basis-point increase.
Do not rely on a generic number from a headline. Use your actual outstanding balance, interest rate and term in a mortgage calculator, then compare the current rate with a rate 0.25 percentage points higher. That produces a much more useful estimate.
Do banks pass RBA changes on immediately?
Not always. Each lender sets its retail rates and decides when a change takes effect. Some announce movements within hours of the RBA decision; others take longer or move by a different amount.
If you have a variable loan, check your lender’s announcement and the effective date. If you have a fixed-rate loan, your repayment may not change now, but the rate available when your fixed period expires could be different.
What if the RBA holds at 4.35%?
A hold would mean the cash-rate target stays the same, not that every mortgage rate is frozen. Banks can adjust pricing for funding costs, competition or product strategy independently of an RBA meeting.
It would also not settle the rest of 2026. The Board meets again under its published schedule and will continue to respond to inflation, labour-market and economic data.
Should borrowers refinance before the announcement?
A one-day rate decision should not be the only reason to refinance. Compare the full package: interest rate, annual or package fees, discharge costs, application costs, cashback conditions, offset account value and whether changing loans resets the repayment schedule in a way that increases total interest.
A lower advertised rate can save money, but refinancing repeatedly for small headline differences can create costs. Ask the existing lender for a pricing review as part of the comparison.
What should people with an offset account check?
An offset account reduces the balance on which mortgage interest is calculated, subject to the product terms. When rates rise, each dollar held in a full offset can become more valuable because it prevents interest at the mortgage rate.
That does not mean keeping every dollar in an offset is always optimal. Emergency liquidity, other debt and investment goals still matter. But borrowers should understand whether their offset is 100% or partial and whether account fees reduce the benefit.
What happens to savings rates?
Higher cash rates can support higher savings and term-deposit rates, but banks decide how much to pass on. A lender may raise mortgage rates faster than deposit rates, or offer a promotional savings rate with conditions such as monthly deposits or no withdrawals.
Compare the base rate and the bonus rate separately. A headline savings rate is less useful if normal account behaviour causes the bonus to disappear.
How can renters be affected?
Rent is not mechanically linked to the RBA cash rate. Landlords face financing costs, but rent levels also depend on local supply, vacancy rates, incomes and tenancy law. A rate rise therefore does not create an automatic right to increase rent by the same percentage.
Tenants should refer to the rules in their state or territory about notice periods and rent increases rather than accepting a claim that “the RBA raised rates” is itself a legal formula for a new rent.
What can households do before the decision?
- Record your current mortgage rate and repayment.
- Calculate the effect of +0.25 and +0.50 percentage points on your own loan.
- Check whether your lender offers a lower equivalent product to existing customers.
- Review expensive credit-card or personal-loan debt before focusing only on the mortgage.
- Keep a buffer for the effective date rather than waiting for the first higher direct debit.
Why is the decision attracting so much attention?
Australia has had several rate increases in 2026, and mortgage holders are sensitive to another change because the cumulative effect matters more than one meeting. At the same time, savers and investors watch the decision for different reasons.
The key discipline is to separate the current rate, which is known, from tomorrow’s decision, which is not yet official. That prevents household planning from becoming a bet on a forecast.
Where to check the official result
The Reserve Bank of Australia currently lists the cash-rate target at 4.35% and the next update at 2:30 pm AEST on September 29. Once the statement is published, that page and the monetary-policy release should be your primary reference. More Australia-focused practical guides are available under Life.
