Australian major banks balance margin pressure with disciplined investment as sector navigates shifting rate environment

Tuesday, 19 May 2026

Australia's major banks delivered solid earnings and capital positions in the first half of 2026, but rising macro and credit risks are beginning to test the cycle, according to new analysis by PwC Australia.

The Banking Matters half-year analysis, which draws on results from the three major banks that reported in early May alongside the most recent half year results from the fourth, found:

• Banks set aside 3 per cent more for total credit provisions this half ($22.8bn), with the loss rate reaching its highest level since the pandemic, despite borrowers not yet showing significant signs of stress.
• Capital buffers stand at $36 billion above regulatory minimums, providing substantial reserves as the Middle East supply-side shock begins transmitting into inflation and living costs.
• Cash earnings rose 7.6 per cent to $15.3 billion and return on equity recovered to 10.7 per cent from a four-year low, signaling how the banks have been able to maintain profitability despite competition reducing margin.
• All four major banks are pursuing a similar growth strategy, with a focus on business lending (now exceeding 34 per cent of Australian books), while mortgage brokers hit an all-time high for the December quarter despite banks investing in proprietary channels.
• Lending growth of 4.7 per cent annualised continues to offset margin compression (NIM down three basis points to 1.82 per cent), but the trade-off is tightening.
• Cost-to-income improved 350 basis points to 47.9 per cent and income per employee reached a three-year inflation-adjusted high, though the durability of those gains remains untested against a full credit cycle.

Noel Williams, PwC Australia's Banking and Capital Markets Leader, said the results reflect a sector in strong shape but facing a narrowing path forward.

"Earnings growth continued through the March quarter and the capital position gives the sector resilience, but the competitive dynamics are tightening, margins are under sustained pressure, and banks are clearly preparing their balance sheets for economic conditions that haven't yet shown up in borrower behaviour,” she said.  

Strategic convergence is narrowing the field

All four major banks have pursued a similar strategic shift toward business lending, which now exceeds 34 per cent of Australian loan books. In home lending, mortgage brokers continue to deliver the majority of volume, hitting an all-time high for the December quarter, despite sustained investment in proprietary origination channels.

"When four banks converge on a segment simultaneously, the competitive benefit erodes quickly. Brokers are still preferred by mortgage borrowers despite banks' preference otherwise. These dynamics have shifted at the big four, but are not changing at an overall industry level,” Williams said.

Efficiency gains are real but untested

Banks have delivered their strongest cost discipline in several years, with the expense-to-income ratio improving 350 basis points and income per employee reaching its strongest inflation-adjusted level since 2023. The source of those gains, whether structural simplification or cyclical conditions, will determine whether they hold as credit demands increase.

"The productivity story is the most encouraging feature of the half. But it remains untested against a full credit cycle. When loan losses rise, so do operational demands. Collections, hardship, and remediation. That's when we'll know if these gains are lasting,” Williams said.

Provisioning built ahead of observable stress

Banks have set aside more money for potential loan losses, applied more pessimistic economic scenarios and raised additional overlays, despite not yet observing meaningful deterioration in borrower performance. Total provisions rose to $22.8 billion, and successive shocks since 2020 have reinforced rather than depleted the overall buffer, creating a structural floor beneath coverage.

The Middle East supply-side shock, however, has not yet appeared in loan staging data.

"Banks are provisioning for deterioration they expect but cannot yet see in their portfolios," Mr Williams said. "The discipline since 2020 has given the sector a strong foundation. But this cycle's test is still ahead."

Supply shock complicates the outlook

PwC Australia chief economist Amy Lomas said the Middle East fuel supply disruption is adding cost pressure to households and businesses while complicating the Reserve Bank's policy options.

"Supply-side shocks push up fuel, transport and goods prices, and that flows directly into what households and businesses are paying week to week. Banks have built their buffers early, which is the right discipline. But the shock hasn't yet shown up in borrower behaviour. The uncertainty is whether provisions are sized correctly for what's still to come," Lomas said.

The full Banking Matters report can be viewed here.