High DTI lending has been on the rise, particularly among investors. As of June 2025, investor lending constituted 35% of new loans, up from 30% five years prior. Such loans often carry higher DTI ratios, raising concerns about financial stability. APRA's move is a pre-emptive measure to curb potential systemic risks associated with high DTI lending, especially in the context of easing interest rates and increasing credit demand.

For borrowers, this policy means that obtaining loans with high DTI ratios will become more challenging. Prospective homebuyers and investors may need to reassess their borrowing capacities and financial strategies. Lenders, on the other hand, will need to adjust their lending practices to comply with the new cap, potentially leading to stricter loan approval processes.

While the cap aims to enhance financial stability, it may also have implications for the housing market. By limiting high DTI loans, the policy could temper housing demand, potentially influencing property prices. However, the exact impact will depend on various factors, including borrower behavior and broader economic conditions.

In summary, APRA's introduction of a 20% cap on high DTI loans is a proactive step towards safeguarding Australia's financial system. Borrowers and lenders alike should stay informed and consider how this change may affect their financial decisions and strategies.