SONIA Shock Sensitivity (bps to zero NPV) quantifies the exposure of a property development project to changes in the Sterling Overnight Index Average (SONIA) rate. It calculates the number of basis points the SONIA must move to reduce the project’s net present value (NPV) to zero, effectively identifying interest rate risk for lenders and developers. This metric is crucial in property development finance UK as it informs financing structures, debt service planning, and risk mitigation strategies. Developers and investors use SONIA shock sensitivity to evaluate how fluctuations in prevailing market rates impact project viability, funding costs, and overall financial performance.
This sits beneath Timing Sensitivity, introducing a more specific variant of the measure without changing its core interpretation. It is commonly considered alongside Forward Rate Sensitivity, as both are closely related measures used to assess similar aspects of performance or risk.
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