Westpac’s loan book plummets as mortgage growth collapses
Westpac's mortgage loan book fell $14.12 billion in August, with owner-occupier and investor portfolios declining. CBA's housing loans rose $2.60 billion, but growth slowed. NAB and ANZ saw minimal increases. Macquarie grew its book by $1.98 billion, the strongest among major lenders. Mid-tier banks like Bendigo, Suncorp, and HSBC reported declines. Cooling demand due to rate hikes and tax changes contributed to the slowdown.
How this was made

The 30-second read
Why it matters
The divergent loan‑book trends highlight which banks are better positioned to navigate a tighter credit environment.
Market read
Bank‑specific loan‑book data provides actionable insight for sector rotation within Australian equities.
What to watch
Reserve Bank rate hikes and fiscal budget changes are driving demand, not just bank performance.
Background
Australian mortgage demand is cooling after multiple Reserve Bank rate hikes and budget tax changes, affecting loan growth across major banks.
Ticker impact
Westpac's loan book fell $9.69 bn (‑2.83%) in August, its biggest monthly drop.
likely downside as market prices in weaker loan growth.
Declining loan balances signal reduced earnings outlook and may trigger sell‑offs.
Commonwealth Bank added $2.60 bn to its housing loan book in August, widening its lead.
potential upside as investors reward growth relative to rivals.
Higher loan growth supports earnings expectations.
NAB's housing book grew only $200 m (0.06%) in August, far slower than prior months.
possible pressure if market views slowdown as earnings risk.
Marginal growth may disappoint investors.
Market effects
Australian banking sector shows divergent loan growth, potentially reshaping relative valuations.
May influence broader Australian equity indices, especially the banking weightings.
Limited; primarily a regional banking story.
Counterpoint
Investors could view Westpac's decline as a buying opportunity if the dip is over‑reacted.
Key entities
- BankWestpac
Australia's second‑largest mortgage lender, reporting a sharp loan‑book contraction.
- BankCommonwealth Bank of Australia
Largest Australian lender, showing modest loan‑book growth.




