Operating Reserve
Unrestricted funds set aside by a nonprofit to sustain operations during periods of financial difficulty or unexpected expenses.
An operating reserve is a designated pool of unrestricted net assets that a nonprofit maintains as a financial safety net to cover ongoing expenses during revenue shortfalls, emergencies, or unexpected costs. The Nonprofit Operating Reserves Initiative (NORI) and most nonprofit financial advisors recommend maintaining an operating reserve equal to three to six months of average operating expenses, though the appropriate level depends on the organization's revenue volatility, funding concentration, and contractual obligations. Operating reserves differ from endowments in that they are available for immediate use at the board's discretion, whereas endowments have spending restrictions. A formal operating reserve policy approved by the board should specify the target reserve level, permissible uses, replenishment strategies, and the authority required to access reserve funds. On Form 990, operating reserves are not reported as a separate line item — they must be inferred from the unrestricted net assets on the balance sheet minus any board-designated funds for other purposes. NonprofitTruth calculates an approximate reserve ratio by dividing total net assets by annual expenses and expressing the result in months. This metric carries a 15% weight in the Efficiency Score. Organizations with fewer than three months of reserves face elevated risk of disruption, while those with more than 18 months may be accumulating assets beyond what prudent management requires.