A recent consumer sentiment survey found 65% of respondents believe another cash rate increase would hurt their household finances. The figure has been widely reported as evidence of widespread mortgage stress, but the methodology matters, and so does the gap between what people fear and what actually happens when repayments climb.
The survey polled a general population sample, not just mortgage holders. With roughly 31% of Australians owning outright and another cohort renting, the headline number includes households whose exposure to rate changes varies sharply. Among those still paying off a mortgage, the proportion feeling the pinch is likely higher, but the survey design means we’re looking at aggregate sentiment, not a direct measure of borrower distress.
What ‘breaking the budget’ actually means
When someone says a rate rise would break their budget, the practical outcome can range widely. Some households would need to trim streaming subscriptions or delay a holiday. Others would face harder choices: skipping fresh produce, drawing down offset accounts, or requesting a hardship variation from their lender.
Nearly three in ten survey respondents said they’d cut discretionary spending if rates rose again. Another 21% pointed to essentials, groceries, fuel, utilities, as the line item they’d reduce. Sixteen per cent would tap savings, 13% would defer major purchases, and 12% would look for extra income. Seventeen per cent flagged the impact as financial stress or anxiety, language that sits somewhere between budget pressure and genuine hardship.
The question is which group tips from manageable pressure into actual default risk. Household budgets are already under pressure from rising energy costs, and the cumulative effect of three 0.25 percentage point increases earlier this year means many borrowers have less room to absorb another hit.
The two-speed economy and why it blunts monetary policy
The split between mortgaged households and outright owners creates a mechanical problem for the Reserve Bank. When a meaningful share of the population holds no debt, rate increases hit unevenly, borrowers and renters bear the full weight while debt-free owners see higher term deposit returns and unchanged living costs.
That uneven distribution softens the aggregate demand impact the RBA is trying to engineer. If inflation persists because cashed-up households keep spending while leveraged households pull back, the board may need to raise rates further to achieve the same cooling effect, which in turn deepens the stress on those already stretched.
The dynamic isn’t new, but the proportions matter. As the share of outright owners grows, driven by an ageing population and years of price growth that locked out younger buyers, the transmission mechanism weakens. The RBA’s tool still works, but the dosage required to shift inflation climbs, and the side effects on leveraged households intensify.
The $120-per-month calculus and serviceability buffers
A 0.25 percentage point increase adds roughly $120 per month to repayments on a $735,000 loan, the approximate median mortgage size for recent borrowers. That figure is manageable for households with income growth or savings buffers, but tight for those already running close to serviceability limits or facing stagnant wages.
The serviceability assessment applied when the loan was written assumes the borrower can handle repayments at a rate roughly three percentage points above the actual loan rate. For loans written in 2021 or early 2022, that buffer has narrowed sharply as the cash rate climbed from 0.10% to 4.35%. Borrowers assessed at a floor rate of 5.5% when they took out a 2.5% loan are now paying 6.5% or higher on a variable rate, and another increase would push them past the stress-test threshold entirely.
That doesn’t mean immediate default, most lenders allow some flexibility, and many borrowers will find the money by cutting elsewhere, but it does mean the margin for error has disappeared. A job loss, an unexpected repair bill, or a second income dropping out turns a tight budget into a hardship case.
Where the risk concentrates
Not all mortgage holders face the same exposure. Fixed-rate borrowers who locked in low rates in 2020 or 2021 and haven’t yet rolled off are insulated for now, though their risk arrives in a lump when the fixed term ends. Variable-rate borrowers have absorbed every increase already, and another rise hits immediately.
Geography matters too. Borrowers in Sydney and Melbourne, where median loan sizes are higher and price-to-income ratios stretched further, carry larger absolute debt loads. A $120 monthly increase on a $735,000 loan is a bigger share of disposable income for a household earning $130,000 than for one earning $180,000, and the former is more common in outer suburbs where prices climbed but incomes didn’t keep pace.
Renters face a different version of the same squeeze. Landlords with variable-rate investment loans often pass rate increases through as rent hikes, and rental vacancy rates below 1% in most capital cities mean tenants have limited bargaining power. The survey found 11% of respondents were concerned about rising rents, a figure that likely understates the issue, given renters make up roughly 30% of households and face direct exposure to both rate-driven rent increases and broader cost-of-living pressure.
The inertia problem and why borrowers don’t switch
More than a quarter of mortgage holders surveyed, 28.4%, admitted they should be comparing rates but hadn’t acted. Another 11.4% said they didn’t know where to start. The inertia is predictable: refinancing takes time, involves paperwork, and requires comparing products with different fee structures, offset features, and rate discounts that expire after a honeymoon period.
But the cost of inertia is real. Borrowers who haven’t refinanced in three or four years are often paying 50 to 80 basis points above the best available rate for their risk profile. On a $735,000 loan, that’s $300 to $500 per month, more than double the impact of a single 0.25 percentage point RBA increase.
The gap between advertised rates and the rates existing customers actually pay, sometimes called the loyalty tax, has widened as lenders compete hard for new borrowers while raising back-book rates more quietly. A borrower who took out a loan at 2.5% in 2021 and hasn’t switched might now be paying 6.8% while a new borrower with the same profile gets 6.2%. The difference compounds over time.
The catch
- A 0.25% rate rise adds roughly $120/month to a $735,000 loan, but borrowers paying a loyalty premium above market rates are already losing $300–500/month by not refinancing.
- Households that refinanced within the past 12 months typically save more in the first year than they’d lose from the next two rate rises combined.
- Switching costs (application fees, discharge fees, valuation) usually break even within 6–9 months if the rate gap is 50 basis points or more.
What the RBA does next and what borrowers can control
The cash rate has been on hold since the June meeting, and the next decision lands on 11 August. Market pricing suggests a hold is more likely than a hike, but the board’s guidance has been clear: if inflation stays elevated, further increases remain on the table.
Borrowers can’t control that decision, but they can control their rate. If you haven’t compared loans in the past 18 months, check what you’re paying against current advertised rates for your loan-to-value ratio and employment type. If the gap is 40 basis points or more, refinancing is worth the effort. If it’s 70 basis points or higher, the savings are large enough to absorb the next rate rise entirely and still come out ahead.
For households already at or near serviceability limits, the priority shifts from rate optimisation to cashflow protection. That means building an offset balance if the loan structure allows it, consolidating higher-rate consumer debt, and stress-testing the budget against one more 0.25 percentage point increase even if it doesn’t arrive, because the margin for error is thin, and the next shock might not be a rate rise at all.
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General info, not financial advice.
