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What is the Influence/Impact Grid (Influence/Impact Matrix)?

written by: Rupen Sharma, PMP • edited by: Elizabeth Wistrom • updated: 8/9/2010

In a meeting, you need support for a couple of ideas from one of the stakeholders. Unfortunately, the support isn’t provided and to make matters the stakeholder influenced others to not accept your idea. You could avoid such scenarios by using the Influence/Impact grid.

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    The Influence/Impact grid, which is also known as the Influence/Impact matrix, is a tool that helps you understand which stakeholders have the most influence and the impact they can make on project success. This tool is very similar to the Power/Interest or Power/Influence grids. By focusing on the key set of project stakeholders, you can prioritize stakeholders requests, spend time as per influence and impact stakeholders have, and lead your project to a success without stakeholder conflicts.

    By definition, Influence is the level of involvement the person has and impact is the ability of the stakeholder to bring out a desired change. This could be during project planning or project execution. For example, a stakeholder that has the ability to set deadlines and hence the project schedule would be classified as high impact. This stakeholder would also have the ability to dictate the length of the critical path.

    PMP Tip: The Influence/Impact grid is part of Project Communication Management as per the fourth version of the PMBOK. You should know what it is and how to apply it.

    During the Stakeholder Analysis of a project, you:

    • Document the interests and motivations of stakeholders in the project
    • Which stakeholder has influence over project resources?
    • Identify the stakeholders that can make the project unsuccessful
    • Identify conflicting interests and relationships between stakeholders
    • Identify stakeholders whose influence evolves during the project
    • Determine communication media and style is best suited for each stakeholder
    • Etc.

    The Influence/Impact grid in stakeholder management pertains to the level of influence stakeholders have on the project. By using this matrix, you can determine which stakeholders to manage closely and which stakeholders to put minimum effort in. This helps you channel you time and energy on the stakeholders that can make-or-break your project. In addition, it helps you create a communication and stakeholder strategy.

    Next, let’s see how the Influence/Impact Grid looks like.

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    Influence/Impact Grid

    The Influence/Impact grid contains four quadrants. Each quadrant gives you an indication of the level of stakeholder management that you’ll have to employ. The four quadrants of the Influence/Impact Grid is shown below.


    Image created by Rupen Sharma

    Stakeholders that lie in the Manage Closely quadrant can easily ensure project failure, if you don’t manage them properly. For example, suppose you the project manager of a software product development project. The sign-off authority on the deliverables is someone who’ll fall in the Manage Closely quadrant in the Influence/Impact Grid.

    As you might have already deduced, influence is very subjective and can be error prone. You might think a certain stakeholder has high level of influence in project success, but in relative terms, may actually not. Hence, identifying and gaging the interest levels of stakeholders is critical when using the Influence/Impact grid for stakeholder management.

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    Questions to Determine Stakeholder Influence and Impact

    The following questions can help you gage the level of influence and impact of stakeholders have on the outcome of your project:

    • What are the responsibilities of the stakeholders?
    • What do stakeholders expect from the project and how to they benefit?
    • Are there any conflicting interests that the stakeholder may have with the project?
    • How committed is the stakeholder to the project? Is he/she willing to commit tangible resources?
    • What are the consequences of the not managing this stakeholder?
    • Can stakeholders influence others, who are the dominant stakeholders?
    • Are there any threats posed by stakeholders?

    By getting answers to these questions, you’ll be able to determine the actual influence of stakeholders and manage them appropriately by using the Influence/Impact grid for stakeholder management.

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