Why do project budgets overrun, and what can the system do about it?

When we review projects that went wrong financially, the pattern is strikingly similar. It wasn't one major event. It was many small deviations whose cumulative impact no one noticed until it was too late to do anything.

The three most common causes

Unclear scope, where small additional requests are never priced. Optimistic estimates that are repeated because no one compares them with actual usage. And delays in time tracking, which make usage always appear lower than it actually is.

What the system actually helps with

Project Operations does not solve any of the three causes on its own. What the system does is continuously track spending against the budget, making any variance visible in week three rather than during final settlement. This makes a significant difference in practice, because a variance detected early can be addressed through a conversation with the customer — whereas the same variance detected at the end can only be handled through a write-down.

The prerequisite

All of this assumes that hours are logged continuously and that the work plan is kept up to date. Without that, the system presents a polished picture that does not reflect reality, leaving you worse off than with a spreadsheet you know is inaccurate.