When it comes to forecasting, there are a variety of expressions that can be used instead of "planning estimate." A planning estimate is defined as a reasonable approximation of the amount of effort required to complete a task. Other synonyms for this term include "ballpark estimate," "rough estimate," "preliminary estimate," and "initial estimate". Each of these phrases conveys the notion that the estimate is not final and subject to change. This type of estimate can be valuable to businesses as it allows them to forecast resource allocation and project timelines, and it can give project members a starting point for planning and outlining their work.