Stress-test loans for vacancy, tourism and building risk

Key Takeaway

This article explains how Australians can stress-test home and investment loans against local vacancy risk, tourism downturns and new construction pipelines before committing. It recommends modelling repayments at interest rates 2–3% higher, rent 10–25% lower, and vacancy up to 6–12 weeks, reflecting APRA’s 3% serviceability buffer. By combining these shocks with a 6–12 month cash buffer, borrowers can decide whether to proceed, restructure, or strengthen buffers before markets soften.

You should stress-test your loans by combining three shocks: (1) interest rates 2–3% higher, (2) lower rent or business income from local vacancy/tourism hits, and (3) longer vacancy from new supply. If you can still cover repayments and essentials from income plus a 6–12 month buffer, the deal is usually manageable; if not, you need to change the structure, buffer or decision.

Roy Morgan’s 2026 data shows over 30% of Australian mortgage holders are now ‘At Risk’ of stress, largely because they didn’t run these scenarios before borrowing. Use this week to check your position before the next rate move or local shock.

Homeowner reviewing loan stress-test scenarios on laptop. Simple stress tests can reveal how local vacancy and tourism shifts affect your loans.

Step 1: Map your exposure to local vacancy and tourism

First, be clear how your loan relies on local conditions.

Ask yourself:

How much of my income is tied to this postcode or industry?
Is the property in a tourism-heavy area or a construction hotspot?
Do I need high rent or full bookings for the numbers to work?

Common high‑risk situations:

Short‑stay or Airbnb‑style income in areas with tightening rules (see /insights/land-tax-investment-short-stay-rules-finance-impacts-states).
High‑density suburbs where multiple towers are completing at once.
Regional or coastal towns where local jobs and visitor numbers swing quickly.

If you’re refinancing an investment, remember lenders already price these risks differently from owner‑occupier loans, so your buffers and structure need to be tighter than for your home loan (see /insights/refinancing-investment-property-vs-home-whats-different).

Step 2: Run three simple local stress tests

Use your current figures, then run the following three tests. You don’t need a spreadsheet; a calculator and 20 minutes is enough. ### 1. Interest rate shock (2–3% higher) APRA expects banks to test you at least 3% above current rates. You should do the same. Example: $800,000 loan, 25 years remaining - Current rate: 6.0% → about $5,160/month - Stressed rate: 9.0% → about $6,690/month Extra $1,530/month needs to come from income, rent or savings. If that pushes total repayments above ~35% of your after‑tax income, you’re moving into…

Frequently asked questions

How is a local vacancy stress test different from the bank’s serviceability test?▾

Banks mainly stress-test interest rates and shade rent using broad policy assumptions. A local vacancy stress test adds postcode-level factors like new buildings coming online, tourism reliance and local job markets. It gives you a more realistic view of how quickly your actual rent or business income might fall if conditions change.

What vacancy and rent assumptions are reasonable for a stress test?▾

For long-term residential rentals, assuming 6–8 weeks’ vacancy per year and a 10–15% rent reduction is a practical starting point. For tourism and short-stay areas, 8–12 weeks’ vacancy and up to 20–25% lower effective income is more conservative. If the deal only works with perfect occupancy and top-of-market rent, risk is high.

Should I change my buffer target if my area is booming now?▾

Yes, a boom can actually increase risk if it rests on tourism or a big construction cycle. In hot markets with lots of cranes or visitor traffic, it’s safer to hold a larger 6–12 month buffer of stressed repayments and living costs. That way, if the boom fades or projects finish, you have time to adjust without being forced to sell.

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How To Stress-Test Loans Against Local Vacancy, Tourism And Building Risk