This document discusses library budgeting. It defines a library budget as an estimate of expected income and expenditures for a given period, usually a year. The budget allows the library to systematically limit spending to available funds. Budgeting is an important management tool that coordinates functions, ensures resource sharing, and allows periodic review and reassessment of needs. Key factors that influence the budget are the library's size, location, services, users, and costs. Common budgeting techniques include line-item, lump sum, formula, performance, programmed, planning programming budgeting, and zero-based budgeting. The document provides examples of typical budget allocations for different types of libraries.