What the RBA's Fourth Hike of 2026 Actually Costs You, Whether You Own, Rent or Save

The Reserve Bank of Australia has raised the cash rate by 25 basis points to 4.60%, the highest level since late 2011 and the fourth increase of 2026. The decision, announced on Tuesday afternoon, was unanimous. On Canstar's modelling, a borrower with a $600,000 loan faces roughly $91 more a month once lenders pass it on, taking the total added this year to about $364 a month. First home buyers lose an estimated $11,200 in borrowing capacity with each hike, or $47,400 across 2026. Governor Michele Bullock has not ruled out further increases, with meetings remaining on 2-3 November and 7-8 December.

What it costs, by loan size

The figures below come from Canstar, modelled on an owner-occupier paying principal and interest with 25 years remaining, at the RBA's average existing customer variable rate, and assuming lenders pass the increase on in full the month after the decision.

Finder's modelling takes a different starting point and reaches a similar place: a borrower on the average loan of $731,000, paying a typical variable rate of 6.21%, would see repayments rise about $113 a month, and would be paying roughly $427 more per month than in January.

Both sets of numbers carry the same caveat, and it matters. They assume your lender passes on the full 0.25 percentage points, and that it does so from next month. Some lenders move faster than others, some pass on slightly less, and the timing varies. Your actual increase will arrive by letter or app notification, and that is the number to budget against.

The number that decides whether you can buy at all

Repayment figures dominate the coverage. Borrowing capacity is arguably more consequential and gets a fraction of the attention.

Canstar's analysis puts the loss at roughly $11,200 of borrowing power per rate hike for a first home buyer, which across the four increases this year totals around $47,400.

That is not an abstraction. It is the difference between qualifying for a property and not qualifying for it, and unlike a repayment increase it cannot be absorbed by cutting spending. A buyer who was pre-approved in January for a certain amount is, on these numbers, approved for nearly $50,000 less today on the same income.

Legal Home Loans director of sales Cullen Haynes put the reduction at around $30,000 to $40,000 per 25-basis-point move, depending on the borrower, and noted that a single hike adds approximately $161 a month to repayments on a $1 million mortgage.

For anyone holding a pre-approval issued earlier this year, the practical step is to ask your lender or broker to re-run it. Pre-approvals expire, and the amount on an old one may no longer be available.

Why the RBA did it

The Board's own language is unusually direct.

"The Board remains focused on ensuring that high inflation does not become embedded," its statement said. "To achieve this, growth in aggregate demand needs to remain subdued for a period to reduce capacity pressures and bring inflation back to target. But inflation is still too high and the Board judged that, in light of recent developments, a further tightening in financial conditions is warranted to support a return of inflation to target in a reasonable period."

The immediate trigger is core inflation, which July CPI figures showed stuck at 3.6% for the third consecutive month. A number that stops falling is a different problem from a number that is falling slowly, and the Board has responded to the former.

Commonwealth Bank head of Australian economics Belinda Allen framed it as a loss of patience, noting inflation has sat above the target band for most of the past six years.

The decision was not a surprise to anyone watching. Markets had priced a hike at around 90%, all four major banks expected it, and all 29 economists surveyed by Bloomberg tipped the same move.

RBA hikes interest rates to 4.6 per cent in 15-year high, open to further hikes https://t.co/b2eUVI3eQr pic.twitter.com/UVEZECWI2D

— The Sydney Morning Herald (@smh) September 29, 2026

Where this sits historically

4.60% is the highest Australian cash rate since late 2011. A 15-year high.

For a sense of how much has changed in the interval: the last time rates were at this level, Sydney's median house price was around $634,000.

Australia's cash rate is now among the highest in the developed world, second only to one other country on the measure cited during Tuesday's coverage. The RBA has developed a reputation internationally for hawkishness, and this decision reinforces it.

It is also the fourth hike in eight months, following two consecutive holds in June and August. The pause is over.

If you have a mortgage

Wait for your lender's notification before recalculating anything. Banks typically announce within days and apply the change the following month. The modelled figures above are a guide, not your bill.

Check what rate you are actually on. This is the single most valuable thing to do this week. Haynes noted that residential home loan rates currently sit roughly between 5.89% and 6.5% depending on lender, loan size, loan-to-value ratio and borrower profile. If you have not reviewed your loan this year, after four hikes there is a reasonable chance your rate is no longer competitive.

Consider whether refinancing makes sense — but do the arithmetic properly. Switching costs money in discharge fees, application fees and valuation, and a lower headline rate does not automatically leave you better off. The comparison that matters is total cost over the time you expect to hold the loan, not the advertised rate.

Ask your existing lender first. Retention teams frequently match competitor pricing for customers who ask, and a phone call costs nothing. Existing customers are often paying more than new ones at the same institution, which is a negotiating position rather than a fixed fact.

If repayments are becoming genuinely difficult, contact your lender early. Hardship arrangements exist, they work better when requested before arrears accumulate, and asking does not damage your credit file the way missed payments do.

If you rent

Renters are affected indirectly, and the effect is real but slower and less predictable than for mortgage holders.

Higher borrowing costs for investors put upward pressure on rents in tight markets, though how much of that gets passed on depends on local vacancy rates rather than the cash rate itself. In markets with very low vacancy, the pass-through tends to be faster.

There is a second effect that cuts the other way. Rate rises reduce borrowing capacity, which keeps some would-be buyers in the rental market for longer, adding to demand. And as one strand of Tuesday's coverage noted, younger Australians may now wait for rates to fall before entering the housing market at all.

Rent increases are also regulated by state and territory law, with notice periods and frequency limits that vary considerably between jurisdictions. A rate rise does not entitle a landlord to raise rent outside those rules.

If you have savings

This is the part of the story that is genuinely good news for some households, and it is routinely buried.

Higher rates make saving more attractive, as Allen put it. Deposit rates, term deposits and high-interest savings accounts all tend to improve when the cash rate rises.

But banks are consistently faster to pass on increases to borrowers than to savers. The gap between the best and worst savings rates in the market is typically far wider than the gap between home loan rates, and loyalty is rarely rewarded.

If you hold meaningful savings, comparing accounts after a hike is one of the few genuinely easy financial wins available. Check whether your rate has moved at all, and check what introductory or bonus rates require of you — many demand a minimum monthly deposit or no withdrawals to pay the headline figure.

Retirees and others living on interest income are among the clearer beneficiaries of a tightening cycle, a group that rarely features in rate rise coverage.

If you are buying

Your borrowing capacity has fallen by roughly $47,400 this year on Canstar's figures. Re-run your pre-approval before you make an offer.

There is a counterweight. Rate rises typically cool buyer demand and take heat out of prices, and Tuesday's coverage described the housing market as having been hit by both rate increases and tax reforms. A smaller loan in a softer market is not automatically a worse position than a larger loan in a hot one.

If you have a fixed-rate loan expiring soon, model the new repayment now rather than discovering it at rollover. The gap between an older fixed rate and current variable pricing can be substantial.

The Australian dollar and the wider economy

Higher rates generally support the currency, because they make Australian assets more attractive to international investors seeking yield. A stronger dollar makes imports and overseas travel cheaper and makes Australian exports more expensive abroad.

The broader economic picture is less comfortable. Tuesday's coverage described a slowing economy, and Bullock was asked directly about the possibility of a recession, a question she did not answer directly. Treasurer Jim Chalmers responded to the decision publicly.

The Housing Industry Association had warned the RBA might "rip the Band-Aid off" with a 50-basis-point move. It did not, choosing the smaller increment instead.

Is this the last one?

Bullock left the door open to further hikes.

Two Board meetings remain in 2026, on 2-3 November and 7-8 December. Home owners have been told to brace for the possibility of back-to-back increases.

A few months ago, economists at the big four banks were broadly of the view that the tightening cycle had ended for 2026. The persistence of core inflation at 3.6% has changed that assessment, and a fifth hike is now considered live.

What decides it is the inflation data between now and November. If core inflation starts falling again, the Board has room to hold. If it stays where it is, the argument that made Tuesday's decision unanimous will still be there in five weeks.

This article is information only and is not financial advice. Modelled repayment and borrowing capacity figures are estimates produced by Canstar, Finder and other third parties on stated assumptions, and your circumstances will differ. Consider seeking advice from a licensed financial adviser or mortgage broker before making decisions about your loan.