The detailed financial component of the strategic plan that guides the allocation of resources and provides a mechanism for identifying deviations of actual from desired performance so corrective action can be taken. A budget assigns a dollar figure to each revenue and expense related activity. A budget is usually prepared for a period of one year by each component of an organization. A budget provides both a guide for action and a means of assessing performance. A budget is a library's post control system.

This definition is in context to Branding. See more contextual defintions for Budget.