Reserve Bank of Australia warns global shocks could test a resilient financial system

The Reserve Bank of Australia said on 1 October that the country’s financial system remains resilient, but mounting global market and operational risks could test it. In its October Financial Stability Review, the bank warned that a severe overseas shock could tighten financing conditions in Australia even as most domestic borrowers appear able to manage falling house prices. The distinction matters for households and businesses: current resilience does not shield them from every disruption originating abroad.

The RBA identified geopolitical tensions, vulnerabilities in global financial markets, risks linked to artificial intelligence and disruptions at critical service providers. Its assessment said domestic pressures warrant monitoring, but do not currently amount to systemic financial stability risks. The bank called for financial institutions to strengthen their ability to withstand shocks and their plans for managing crises.

How a global market shock could reach Australia

The review said sovereign debt in some large overseas economies is rising from already elevated levels. It also pointed to greater participation by investors who respond quickly to price changes or use borrowed money in bond markets. A disorderly repricing in those markets could spill into other assets. The RBA said low risk premia in major share and credit markets leave prices vulnerable to a sharp correction after an adverse shock.

A change in sentiment towards the AI investment boom is one possible trigger, according to the RBA. Its concern centres on expectations of sustained rapid earnings growth and financing arrangements it described as increasingly opaque and circular. The review presents this as a potential source of market stress, rather than saying an AI-driven sell-off has begun.

Operational failures present another route for disruption. The review warned that an outage at a common technology or financial-market service provider could affect many institutions at once. If payments stopped flowing or people temporarily lost access to funds, an operational event could turn into financial stress. The bank urged firms to prepare for financial and operational problems occurring together, including through stronger crisis simulations.

What the review says about mortgage risk

Against those external threats, the RBA judged most Australian households with mortgages to be well placed to manage more difficult conditions, including a sharp fall in housing prices. It credited borrowers’ savings and property-equity buffers, as well as prudent lending standards. That is an assessment of the system overall: the bank acknowledged pockets of household stress and did not say every borrower could absorb the same loss.

The Guardian reported that fewer than one in 100 borrowers currently owe more on their home than the property is worth, according to the RBA’s analysis. It also reported the bank’s estimate that a 20 per cent property-price fall would push about 5 per cent of mortgages into negative equity. That figure describes a scenario, not a forecast of house prices or an estimate that 5 per cent of borrowers would default.

Negative equity means the outstanding loan exceeds the home’s value. The RBA said it is insufficient by itself to trigger default while a borrower can continue making payments. The Guardian reported that recent borrowers who took out large loans, including some first-home buyers using the government’s 5 per cent home guarantee scheme, were more exposed to that risk. It said the share of those borrowers falling behind on payments remained contained.

The Guardian also reported an RBA estimate that just under 2 per cent of mortgaged homeowners lacked enough income to cover essentials and mortgage payments, roughly the same share as six months earlier. The report said the bank expected that measure to stay broadly stable for some time. Those system-wide figures sit alongside the RBA’s acknowledgement that some households continue to experience hardship.

What the RBA wants financial institutions to watch

The RBA said Australian banks have substantial capital buffers and are positioned to keep lending even if economic conditions deteriorate. It nevertheless urged lenders to maintain sound standards amid competition for loans. For the wider financial system, its priorities include stronger operational resilience, planning for recovery after disruptions and preparation for scenarios in which market stress and service failures reinforce each other. The review’s warning is therefore about vulnerabilities that could emerge under a shock, alongside its finding of present resilience.