The functional budget is one that relates to any of the functions of an organization. The number of functional budgets depends upon the size and nature of business. The following are the commonly used:
A budget manual is a document that sets outstanding instructions governing the responsibilities of persons and the procedures, forms and records relating to the preparation and use of budgets and it is a booklet containing standing instructions regarding the procedures to be followed and the time schedules to be observed.
To line up the various functions of the Budget Committee, to bring them together and to co-ordinate their efforts in the matter of preparation of target figures, there should be a person usually designated as the Budget Controller, who can provide ready data relating to all the functions. He is more or less the secretary to the budget committee. The Budget Controller does not control; he is a staff man; he advises but does not issue instructions.
Zero-based budgeting emerged in the late 1960s as a response to incremental budgeting. With zero-based budgeting, all budgets start at zero and activities/costs are only allowed if they are justified under investigation. All requests for resources must be presented and evaluated on the basis of cost-benefit. Zero-based budgeting is best suited to discretionary spending where there is no clearly defined input-output relationship such as in marketing, research and development, and training or public sector organization such as district councils.