Loan serviceability concept showing lender stress tests at current, +1.5%, and +3% interest rates to assess borrowing capacity and repayment resilience.

How Interest Rate Scenarios Affect Serviceability Simple Lender Stress Tests

August 18, 20261 min read

Lenders assess serviceability by stress testing your repayments at higher interest rates. You should do the same to avoid surprises. We use three practical scenarios to show how borrowing power and repayments change: current rate, +1.5% stress, and +3.0% severe stress.

Under each scenario calculate repayments, then compare to rental income and business cashflow. For company purchases, lenders will also review TJSS Management Pty Ltd’s cashflow and director financials. The goal is to demonstrate that even under stress your obligations remain serviceable.

Practical steps to strengthen your position include increasing deposit size to lower LVR, reducing other debt, securing a portion of the loan on a fixed rate, and preparing robust business financials. For investors, dual-income properties and conservative rent assumptions improve lender confidence.


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Sally Blyth

Sally Blyth

Sally Blyth, is the founder and director of Baxter & Mason Property Buyers Agent. Sally has a deep passion for property and a strong desire to assist individuals, particularly single women, in achieving financial independence. Sally utilises her extensive real estate expertise and network to provide a stress-free, seamless and timesaving property buying journey, drawing from her own personal experiences of purchasing multiple houses since 1996.

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