How to build a risk matrix step by step

A risk matrix is one of the most useful tools for making decisions with a clear head. In this article we explain what it is and how to put one together, step by step.

What is a risk matrix?

It's a table (or a grid of colors) that shows how serious each risk is, by combining two questions:

• How likely is it to happen?
• If it happens, how strong would the impact be?

By crossing those two answers, each risk lands in a cell with a color: green (low), yellow (medium) or red (high). That way, at a glance, you know where to focus first.

Step 1: Gather the information

Before you start, keep at hand whatever you already have documented: policies, manuals, procedures, previous reports. It doesn't need to be perfect; begin with whatever you have.

Step 2: Identify the risks

For each important process, ask yourself: what could go wrong? Think in terms of cause → event → consequence. For example:

Cause: the payment system does not validate identity properly. Event: a third party makes a fraudulent transaction. Consequence: loss of money and damage to reputation.

Writing risks out this way, in full, prevents confusion later on.

Step 3: Rate likelihood and impact

Use a simple scale, usually from 1 to 5:

• Likelihood: 1 = very rare, 5 = almost certain.
• Impact: 1 = minor nuisance, 5 = serious harm.

Be honest and consistent. What matters is not the exact figure, but being able to compare some risks against others.

Step 4: Place them on the matrix

Multiply or cross both values and place each risk in its cell. The ones that land in red are your priority; the yellow ones, to watch; the green ones, under control.

Step 5: Decide what to do with each one

For the important risks, choose an action:

• Prevent or reduce: put a control in place (for example, a double check).
• Transfer: insurance, a specialized third party.
• Accept: if the cost of avoiding it is greater than the risk itself.

Step 6: Review it often

A risk matrix is not a document you make once and file away. The business changes, new risks appear and others go away. Review it from time to time (quarterly or every six months is a good habit).

The most common mistake

Building the matrix from memory and from a single perspective. Whatever one person doesn't remember simply doesn't get in. That's why it helps to involve several viewpoints (operations, compliance, strategy) or to rely on a tool that reviews the documents for you.

In short: identify, rate, place, decide and review. With those five steps you already have a professional risk matrix.

If you want to skip the manual work, Fractal Risk builds your complete risk matrix in minutes and leaves it ready to present.