The accountant overcalculated the expenses for the project.

She overcalculated the cost of the project.

She is always overcalculating the risks before making a decision.

She always overcalculates the amount of time it takes to complete a task.

I tend to overcalculate the amount of time it takes to complete a task.

There were many overcalculations in the project.

The overcalculation of the project's budget led to financial difficulties.