Bottom-up Budget overview

You can create a bottom-up budget based on the project requirements. For bottom-up budgeting, all the departments or sections of a company create a list of all the anticipated expenses. The sum of all these expenses is used to create an overall budget. This method of budgeting is considered to be the most detailed budget as all the lower levels of expenses must be known and defined correctly in order to achieve a correct budget.

The bottom-up budget can be used for existing projects or when all the expenses and resources are known.