Australian mortgage brokers are staring at a sharp reset in borrowing capacity, with the Reserve Bank’s second consecutive 0.25 percentage point hike taking the cash rate to 4.1% as it responds to “domestic inflationary pressures” and global tensions. Another increase is still tipped for May.
Canstar analysis shows this tougher rate environment is tightening home buying budgets just as many first‑home buyers and property investors try to get in before mortgage rates climb further.
According to Canstar, a person on the average full‑time wage of $106,950 can now borrow around $12,000 less following the March 0.25 percentage point cash rate rise, assuming an owner‑occupier loan with minimal expenses and no other debts. For a couple earning two average incomes, the estimated hit from this one change is about $24,000.
“Tuesday’s rate hike will slice roughly $12,000 off the average Australian’s maximum home buying budget. For couples joining forces on the property hunt, this one move has potentially lost them as much as $24,000,” said Sally Tindall (pictured), Canstar.com.au’s data insights director.
When February’s increase is included, the cumulative reduction in borrowing capacity climbs to roughly $25,000 for a single average‑income borrower and $49,000 for a couple. Finder estimates the latest rise alone adds around $2,805 a year to repayments on an average $736,259 mortgage, compounding the pressure on new and existing borrowers.
If the big four banks are right and the RBA lifts again in May, the total hit could reach about $37,000 for an individual and $73,000 for a dual‑income household.
CBA, Westpac, NAB, and ANZ all expect another 0.25 percentage point move in May, which would take the cash rate to 4.35% and effectively unwind the three cuts delivered in 2025. RBA governor Michele Bullock has warned that not acting on inflation risks a recession, reinforcing the message that rate relief is unlikely in the short term..
Tindall notes that higher rates erode both repayments and capacity.
“Every rate hike doesn’t just hit borrowers in the hip pocket, it also quietly chips away at how much they can borrow,” she said, warning that “buyers could be staring down an almost $40,000 hit to their budgets in just four months.”
Canstar highlights a series of levers borrowers can pull to improve their position, including paying down existing debts, reducing unused credit limits, lifting income where possible, and targeting sharper home loan rates to stretch borrowing capacity.
While these are individual decisions, they are also core areas where brokers can add value in the current market by stress‑testing scenarios and steering clients towards more sustainable loan structures.
Tindall cautions that pushing too far remains risky even as clients chase rising prices. She says banks’ serviceability checks are there for good reason and urges buyers to model repayments at significantly higher mortgage rates over the life of the loan so that today’s ambitions do not become tomorrow’s arrears problem.
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