zero-base budgeting

or zero-based budgeting

noun
  1. a process in government and corporate finance of justifying an overall budget or individual budgeted items each fiscal year or each review period rather than dealing only with proposed changes from a previous budget. Abbreviation: ZBB

Origin of zero-base budgeting

First recorded in 1970
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018