The term pertains to expenditures which could not pass the test of prudence or the diligence of a good father of a family, thereby denoting non-responsiveness to the exigencies of the service. Unnecessary expenditures are those not supportive of the implementation of the objectives and mission of the agency relative to the nature of its operation. This would also include incurrence of expenditure not dictated by the demands of good government, and those the utility of which cannot be ascertained at a specific time. An expenditure that is not essential or that which can be dispensed with without loss or damage to property is considered unnecessary. The mission and thrusts of the agency incurring the expenditures must be considered in determining whether or not an expenditure is necessary.
COA Circular No. 2012- 003 dated October 29, 2012 provides for Updated Guidelines for the Prevention and Disallowance of Irregular, Unnecessary, Excessive, Extravagant, and Unconscionable Expenditure.