
Balancing Spending Policy and Growth for Nonprofit Endowments
Bronwyn Tierney, CFA®
Partner and Chief Financial Strategist · May 28, 2026
Nonprofit endowments exist at the intersection of two sometimes competing objectives: providing meaningful support for current programs and preserving purchasing power for future generations. Striking the right balance between these goals is one of the most consequential decisions an endowment's board and investment committee can make. A spending policy that is too aggressive may erode the endowment's real value over time, while one that is too conservative may leave current programs underfunded and mission impact unrealized.
Most endowments establish a spending rate, typically expressed as a percentage of the fund's market value, that determines how much can be distributed annually to support operations. Common approaches include spending a fixed percentage of a trailing average of the endowment's value, often calculated over three to five years. This smoothing mechanism helps reduce the impact of short-term market volatility on year-to-year distributions. The specific rate an organization selects should reflect its unique circumstances, including the endowment's size relative to operating needs, the organization's other revenue sources, and the time horizon over which the endowment is expected to exist.
A frequently referenced guideline suggests that endowment spending rates in the range of four to five percent of a rolling average market value may allow for both current distributions and long-term preservation of purchasing power, assuming a diversified investment approach and moderate inflation. However, this range is a starting point for discussion rather than a universal rule. Organizations with shorter time horizons, concentrated revenue sources, or specific programmatic commitments may need to think about their spending rate differently. The key is to model various scenarios and understand the tradeoffs involved.
Investment strategy and spending policy are deeply interconnected. An endowment that adopts a higher spending rate generally needs its investment portfolio to generate higher returns to maintain its real value, which typically means accepting greater investment risk. Conversely, a lower spending rate may allow for a more conservative investment posture. Board members and investment committees should consider these dynamics together rather than in isolation. It can be helpful to model how different combinations of spending rates and expected portfolio returns might affect the endowment's value over ten, twenty, or even fifty years.
Underwater endowment provisions are another important consideration. During periods of significant market decline, an endowment's market value may fall below its historical gift value, a condition sometimes called being underwater. State laws, including the Uniform Prudent Management of Institutional Funds Act (UPMIFA) adopted in most states, provide guidance on whether and how institutions may continue spending from underwater funds. Boards should understand the legal framework that applies to their organization and develop policies that address this scenario before it arises.
Donor intent adds another layer of complexity. Many endowments consist of multiple individual funds, each with its own purpose and, in some cases, specific restrictions established by the donor. Managing a collection of funds with varying objectives requires careful attention to both legal requirements and practical administration. Clear documentation of donor restrictions, consistent application of spending policies, and transparent reporting can help organizations honor donor intent while managing the endowment effectively.
Regular review of both spending policy and investment strategy is essential. Economic conditions change, organizational needs evolve, and new board members bring fresh perspectives. An annual or biennial review that examines the endowment's current funded status, recent investment performance, spending trends, and forward-looking projections can help ensure that the endowment continues to serve its intended purpose. By approaching these reviews with both discipline and flexibility, nonprofit leaders can work toward a balance that supports their mission today while preserving resources for the future.
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