Moody's analysts, Letitia Wong and Patrick Winsbury, have indicated that this policy is unlikely to slow home loan growth in the near term, as most banks currently underwrite well below the 20% limit. However, the cap is expected to impact highly leveraged investors more than owner-occupiers. Investor lending has grown more rapidly, reaching 35% of new loans in June 2025, up from 30% five years ago. Australia's household debt remains among the highest in developed economies, standing at 182% of disposable income as of December 2024. The policy aims to curb future risks rather than address immediate concerns.

For borrowers, this development underscores the importance of maintaining a healthy debt-to-income ratio. Prospective homebuyers and investors should assess their financial positions carefully, considering how their total debt compares to their income. Lenders are likely to scrutinize applications more rigorously to ensure compliance with the new cap, making it essential for applicants to present strong financial profiles.

In summary, APRA's introduction of a 20% cap on high DTI loans is a strategic move to safeguard Australia's financial system. While it may pose challenges for highly leveraged investors, it promotes responsible lending practices and encourages borrowers to maintain manageable debt levels relative to their income.