Guide to inherent and residual risk

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  • Create Date July 30, 2024
  • Last Updated July 30, 2024
This guide covers the evolution and application of the concept of inherent risk, originally rooted in insurance practices. In the past, underwriters used Maximum Possible Loss (MPL) to assess potential catastrophic losses, focusing on worst-case scenarios. However, this approach was highly theoretical and often unrealistic. Over time, insurers transitioned to Estimated Maximum Loss (EML), which uses probabilistic models and historical data for more accurate risk assessments. This shift highlights the limitations of the inherent risk concept.
In modern risk management, it is crucial to distinguish between inherent risk, current risk, and residual risk. While inherent risk represents the hypothetical risk without any controls, current risk reflects the risk with existing controls, and residual risk projects the future risk after implementing new mitigation measures. Internal auditors often compare inherent risk to current risk, while risk managers focus on current versus residual risk to optimize mitigation efforts.
Qualitative assessments of risk, such as those using subjective scales, often lead to inconsistent and unreliable evaluations. A more effective approach involves quantitative methods and decomposition techniques, which provide a clearer picture of control effectiveness and potential risk reduction. This guide emphasizes the importance of using modern, probabilistic approaches to risk assessment, aligning risk management practices with strategic decision-making to ensure a realistic and actionable evaluation of risks.

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