Why Do Projects Fail?

Learning How to Avoid Project Failure


An impossible business case is one common reason for project failure.

© iStockphoto/emmgunn

We can probably all think of projects that have "failed" – perhaps processes got worse rather than better, maybe they were cancelled because of cost overruns, or perhaps systems were launched with fundamental errors.

How do you know when – and why – a project has failed? In many cases, the reason for failure is obvious. However, the definition of failure isn't always clear: one project with a significant delay might be described as a failure; yet another, with a similar delay, might be seen as a stunning success.

In this article, we'll define project failure, and explore the factors that cause some projects to fail.

Definition of Project Failure

A project is considered a failure when it has not delivered what was required, in line with expectations. Therefore, in order to succeed, a project must deliver to cost, to quality, and on time; and it must deliver the benefits presented in the business case.

The requirements for success are clear and absolute – right? Unfortunately, it's not that simple. Because the second part of our definition of success is that the project must be delivered "in line with expectations."

If key stakeholders agreed that a project had to exceed its initial budget, the project may still be considered a success. Likewise, if a project delivered everything that was in the detailed project designs, it may still be considered a failure if it didn't include vital elements that the key stakeholders needed. This doesn't seem fair, but project success and failure isn't just about the facts, nor is it simply about what was delivered. It's also, crucially, about how the project is perceived.

Reasons for Project Failure

Here are some of the main reasons why projects fail:

In many cases, business case documentation is written before a project manager is assigned. If you're the incoming project manager, make sure you don't simply accept these documents as they are!

You're responsible for delivering the project, so be sure to review the business case. Validate assumptions, and identify any gaps or areas that need more detail. If difficult conversations are needed, have them now. Once deadlines, requirements, and budgets are set, expectations are much more difficult to change!

Key Points

For a project to be successful, it's not enough simply to manage your project competently, and deliver a good quality product. To avoid failure, make sure you have identified the right business requirements, created an achievable business case, put strong project governance into place, managed a high-quality implementation, focused on benefits, and monitored your changing environment.

Above all, be sure to manage the expectations of your stakeholders, so that they stay supportive. After all, these are the people who will declare your project to be successful – or otherwise.

This site teaches you the skills you need for a happy and successful career; and this is just one of many tools and resources that you'll find here at Mind Tools. Click here for more, subscribe to our free newsletter, or become a member for just $1.

Add this article to My Learning Plan

Where to go from here:

Join the Mind Tools Club

Click to join Mind Tools
Printer-friendly version
Return to the top of the page

Create a Login to Save Your Learning Plan

This ensures that you don’t lose your plan.


Connect with…

Or create a Mind Tools login. Existing user? Log in here.
Log in with your existing Mind Tools details
Lost Username or Password
You are now logged in…

Lost username or password?

Please enter your username or email address and we'll send you a reminder.

Thank You!

Your log in details have been sent to the email account you registered with. Please check your email to reset your login details.

Create a Mind Tools Login
Your plan has been created.

While you're here, subscribe to our FREE newsletter?

Learn a new career skill every week, and get our Personal Development Plan workbook (worth $19.99) when you subscribe.


Thank You!

Please check your Inbox, and click on the link in the email from us. We can then send you the newsletter.