Zero-base budgeting (ZBB)
Budgeting method that disregards the previous year's budget in setting a new budget, since circumstances may have changed. Each and every expense must be justified in this system.
Zero Based Budgeting
A system of budgeting where each department or division of a company must justify all expenditures and allocations rather than simply increases over the previous fiscal year. That is, the budget is made with every department starting at zero dollars to spend, and each department must demonstrate need for what it wants to receive. Zero-based budgeting is advantageous because it is more detail-oriented than other forms of budgeting; among other things, it makes it easier to detect and eliminate over-inflated budgets. On the other hand, zero-based budgeting is more difficult and time consuming to put together and often has a bias toward departments that directly produce revenue instead of departments like R&D.