Stress-Tested Internal Rate of Return (under downside scenario) measures the project’s likely IRR if adverse conditions occur, such as cost overruns, slower sales, or reduced values. In property development finance, it is a vital sensitivity analysis tool for evaluating how resilient projected returns are under less favourable assumptions. By modelling a downside scenario, developers and investors can identify the potential impact on equity returns, inform risk mitigation strategies, and ensure funding structures remain viable even in weaker market conditions. It is often compared alongside the base case IRR in project appraisals.
This sits beneath Equity-Based Returns, introducing a more specific variant of the measure without changing its core interpretation. It is commonly considered alongside Rolling IRR (Monthly or Quarterly), as both are closely related measures used to assess similar aspects of performance or risk.
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