Westpac Banking Corp., Australia’s second-largest lender, has reported a sharp decline in mortgage applications following changes to the country’s tax treatment of property investment. The 20% drop highlights how fiscal policy, financing costs, and investor expectations are increasingly influencing Australia’s housing market at a time when households are already facing elevated borrowing costs.

Tax Changes Reshape the Economics of Property Investment

The decline in mortgage applications comes after Australia introduced changes affecting the tax treatment of residential property investment. The reforms are designed to reduce some of the tax advantages associated with investing in existing housing, while maintaining greater incentives for investment in new housing supply.

For prospective property investors, changes to after-tax returns can materially influence borrowing decisions. Property purchases typically involve substantial leverage, meaning even relatively modest changes in taxation or interest costs can alter the expected profitability of an investment. Westpac’s reported decline therefore indicates that some borrowers may be reassessing property purchases rather than simply delaying applications.

The development is particularly significant for Australia’s housing market because investors represent an important source of demand in several major metropolitan markets. A sustained reduction in investor participation could affect transaction volumes and the composition of housing demand.

Investor Credit Growth Faces a Sharp Slowdown

Westpac expects the impact of weaker investor demand to extend beyond mortgage applications. The bank forecasts growth in investor housing credit to fall from 9.1% in 2026 to 4.5% in 2027 and 4.4% in 2028, representing a substantial moderation in the pace of lending.

Overall housing-credit growth is also expected to slow, declining from 6.8% in 2026 to 4.7% in 2027 before recovering to 5.2% in 2028. Owner-occupier demand is expected to provide some support as investor activity weakens.

Higher borrowing costs add another layer of pressure. For households considering property purchases, mortgage rates remain a major factor in affordability and purchasing decisions. For banks, slower credit growth could increase competition for borrowers and place greater emphasis on maintaining margins, deposit growth, and credit quality.

What the Australian Housing Shift Means for Global Markets

The developments at Westpac highlight a broader relationship between tax policy, monetary conditions, and asset markets. When governments change fiscal incentives while financing costs remain elevated, investors can quickly reassess the attractiveness of leveraged assets such as residential property.

For investors in Israel, Australia’s housing market provides a useful international example of how policy changes can influence real estate demand and bank lending. Similar dynamics are relevant across developed markets, where elevated property valuations, interest-rate expectations, and affordability pressures remain important considerations for financial institutions and real estate investors.

The consequences for Westpac and the wider Australian economy will depend on how persistent the decline in investor activity becomes. A weaker housing market could reduce transaction-related economic activity, while limited housing supply and continued population growth could provide underlying support for prices and owner-occupier demand.

Looking ahead, investors will be watching mortgage applications, housing-credit growth, property transactions, house prices, interest-rate decisions, and bank lending conditions. The key question will be whether the 20% decline remains concentrated among property investors or develops into a broader slowdown in Australian housing demand and credit growth.