
Cours : ENTERPRISE RISK MANAGEMENT (ERM)/ Niveau: (AFC) 2025-2026 Par: TCHIENGANG D.
PEGUY R.
Page 5 sur 8
Strengthen internal controls, and
Align risk-taking with strategic objectives.
As the Cameroonian business environment evolves under digitalization, regional integration, and environmental pressures,
organizations must continually refine their risk identification and assessment tools for resilience and sustainability.
Probability–Impact Matrix and Risk Appetite & Tolerance
1. Introduction
In Enterprise Risk Management (ERM), organizations must evaluate, prioritize, and decide how much risk they are willing
to accept.
Two important tools support this process:
1. The Probability–Impact Matrix (PIM) – for assessing and ranking risks.
2. Risk Appetite and Tolerance – for defining acceptable risk boundaries.
These tools ensure that decision-makers balance risk exposure with strategic objectives, resource allocation, and
stakeholder expectations.
2. Probability–Impact Matrix (PIM)
2.1 Definition
The Probability–Impact Matrix, also known as a Risk Heat Map, is a visual tool used to evaluate and prioritize risks
based on two key dimensions:
Probability (Likelihood): The chance that a risk event will occur.
Impact (Severity): The magnitude of consequences if the risk event occurs.
Each risk is assessed qualitatively or quantitatively and placed in a grid (matrix) to identify which risks require immediate
attention.
2.2 Structure of a Probability–Impact Matrix
Color Coding (Typical):
� Green: Low risk – acceptable/manageable.
� Yellow: Moderate risk – monitor closely.
� Red: High risk – requires urgent mitigation or control.
2.3 Steps to Construct a Probability–Impact Matrix
1. Identify risks: Using techniques such as brainstorming, checklists, or risk mapping.
2. Define rating scales:
o Probability Scale (e.g., 1–5)
1 = Rare, 2 = Unlikely, 3 = Possible, 4 = Likely, 5 = Almost Certain
o Impact Scale (e.g., 1–5)
1 = Negligible, 2 = Minor, 3 = Moderate, 4 = Major, 5 = Catastrophic
3. Assign scores: Based on expert judgment or data.
4. Plot risks on the matrix.
5. Prioritize risks: High-probability/high-impact risks are prioritized for mitigation.
2.4 Advantages of the Probability–Impact Matrix
Simplifies complex risk information into a clear visual format.
Encourages strategic discussion and prioritization.
Links directly to resource allocation and contingency planning.
Can be updated periodically as risks evolve.