While endowments are often presented as a tool for long-term transformation, in practice their design can constrain flexibility, access, and alignment with mission. Below, we present a few alternative structures for financial sustainability and resilience that bolster movement autonomy in a volatile funding environment

Endowments are typically understood as a financial structure that converts a large stock of capital into a predictable flow of income. Through a carefully managed investment portfolio and a disciplined payout policy, often in the range of 3-5% of total asset value, they are intended to produce a steady revenue stream while preserving principal in real terms. This structure is designed to smooth income over time and reduce exposure to volatility in fundraising environments.

Yet this framing carries a particular set of assumptions about what financial sustainability requires. It assumes that the central challenge is insufficient long-term income, rather than a mismatch between capital structure and operational reality. It prioritizes preservation over deployment and separates the investment function from the mission function. For organizations operating in complex, resource-constrained, and rapidly changing contexts, these assumptions often create mismatch rather than solve it.

Reframing financial sustainability as capital design

A more precise way to understand the problem is to view financial sustainability as an issue of capital design. Beyond accumulation of assets, the question is how to structure capital so that it meets liquidity needs, manages risk, aligns with mission, and enables effective deployment over time.

That framing also has implications for power. Endowments structure who holds power over capital, how decisions are made, and how organizational priorities are defined over time. The design of an endowment therefore has implications beyond financial sustainability, touching on governance and accountability within and around an organization.

The financial constraints built into endowment structures

Endowments are highly effective at achieving a specific financial objective - long-term income stability - but less suited in situations where flexibility, alignment, and capital deployment are equally important.

The first constraint is the relationship between principal and income. Because payout rates are intentionally conservative, you need a very large amount of capital to generate meaningful annual revenue. Even a relatively modest operating requirement translates into a substantial capital target, creating a structural inefficiency for organizations that cannot realistically accumulate such a base.

The second constraint is liquidity. Endowment principal is typically restricted, either legally or through governance norms, and cannot be drawn down without undermining the long-term premise of the structure. This creates a situation in which an organization may appear well-capitalized on paper but lack accessible funds to manage short-term obligations, invest in new opportunities, or respond to unexpected shocks.

A third constraint lies in the construction of the investment portfolio itself. Endowment assets are generally managed to prioritize risk-adjusted return. In practice, this often results in a separation between the portfolio and the organization’s mission, with the majority of capital deployed in markets and sectors that are not directly connected to programmatic goals and may even conflict with them.

Finally, governance arrangements often concentrate authority over large pools of capital within a relatively narrow set of actors, typically investment committees and external managers. Decision-making is usually guided by financial performance metrics rather than impact considerations, reinforcing a division between financial expertise and social purpose. These constraints are not inherent to all forms of endowment design, but they do reflect prevailing governance norms and investment practices.

It's worth noting that these constraints aren’t evenly distributed. Evidence shows that larger endowments consistently outperform smaller ones, in part because they can access a wider range of asset classes and absorb management costs more easily. For most civil society organizations, which operate with relatively small capital bases, relying on endowment-based models can therefore create a structural disadvantage.

The stability that endowments are intended to provide is also contingent on external conditions. Their ability to generate income is directly tied to the performance of capital markets, which introduces exposure to cycles that organizations cannot control. In periods of lower returns, the expected income from endowments may fall below what is required to sustain operations.

Below, we present some alternatives to endowment structures that support financial resilience for nonprofit organizations.

Mission-aligned reserve funds: Structuring for liquidity and stability

A mission-aligned reserve fund approaches financial resilience from a different starting point. Rather than attempting to generate income from a permanent capital base, it seeks to ensure that sufficient cash flow is available to manage operating risk and volatility.  

In practice, this involves designating a portion of the organization’s balance sheet as a reserve, typically sized to cover several months of operating expenses. The capital is invested with a focus on capital preservation and modest yield, often through low-volatility instruments or impact-oriented fixed income products. Because the reserve is not permanently restricted, it can be drawn upon when needed, whether to bridge temporary funding gaps, stabilize operations during downturns, or finance strategic transitions.

The reserve fund structure changes the financial dynamics of the organization. Instead of relying on a small annual payout, the organization maintains direct access to its own capital, improving its ability to manage cash flow and reducing reliance on external financing on unfavorable terms. The reserve becomes a tool for liquidity management and risk absorption rather than a source of passive income.

Evergreen funds: Recycling capital rather than preserving it

An evergreen or revolving fund represents a more fundamental departure from the endowment model.  

Capital is initially pooled (often from a combination of philanthropic and concessional sources) and deployed into financial instruments such as low-interest loans, revenue-based financing agreements, or recoverable grants. As these investments are repaid, the capital flows back into the fund and is redeployed, creating a continuous cycle of use. The financial performance of the fund is therefore measured not only in terms of return rates, but also in terms of capital velocity: how many times a given unit of capital can be deployed over a defined period.

In many cases, this structure incorporates elements of blended finance. A first-loss tranche, funded by philanthropic capital, absorbs initial losses and improves the risk profile for additional investors. This enables the fund to mobilize larger pools of capital than would otherwise be available, while maintaining a focus on mission-driven deployment.

The critical distinction from an endowment is that value is generated through circulation rather than preservation. Instead of extracting a small percentage of return each year, the full amount of capital is put to work repeatedly, potentially achieving a greater cumulative impact over time.

Multi-year capital commitments: predictable inflows

Multi-year capital commitments address the problem of revenue volatility by structuring predictable inflows. In this approach, funders make binding commitments to provide support over an extended period, typically several years, under agreed terms.

From a financial perspective, these commitments function as a forward revenue stream. They enable organizations to plan over longer time horizons without the need to generate income from invested capital. The predictability of these inflows can also improve internal financial management, allowing for more efficient allocation of resources and reducing the need to maintain large reserves.

In some cases, these commitments may be structured in ways that resemble financial contracts, with clearly defined payment schedules and conditions. This creates a degree of certainty that is comparable to the payout from an endowment, but without requiring the accumulation of a large capital base. The organization effectively substitutes contractual obligations for financial assets.

This approach is particularly relevant in contexts where capital markets are underdeveloped or where the costs of managing an investment portfolio would outweigh the benefits. It shifts the burden of financial structuring away from the nonprofit and toward funders who are better positioned to manage long-term capital.

Guarantee and first-loss facilities: Using capital to reallocate risk

Guarantee structures operate on different financial principles altogether. Rather than providing capital directly for deployment, they use capital to alter the distribution of risk within a financial system.

In a typical arrangement, philanthropic or concessional capital is set aside to absorb a defined portion of potential losses within a portfolio of investments. This may take the form of a first-loss facility, where the initial losses are covered by the guarantee pool, or a broader credit enhancement that reduces the perceived risk for other investors.

The effect of this structure is to improve the risk-return profile of investments that would otherwise be considered too risky. By lowering expected losses, it encourages participation from banks, development finance institutions, or impact investors, thereby increasing the total volume of capital available.

From a balance sheet perspective, not all of the committed capital is deployed at once. Much of it remains contingent, only being called upon in the event of defaults. This creates a leverage effect, where a relatively small amount of capital supports a much larger volume of underlying transactions.

In contrast to an endowment, which generates income through returns on invested assets, a guarantee facility generates impact through the reallocation of risk and the mobilization of additional capital.

Real assets: Anchoring value outside financial markets

The final alternative shifts the focus from financial instruments to physical assets. Instead of holding capital in investment portfolios, organizations deploy it to acquire assets that directly support their work, such as land, buildings, or infrastructure.

These assets can generate value in several ways. They may produce income through rental or usage fees, reduce operating costs by eliminating the need for external leases, or provide long-term security through stable ownership. In some cases, they are held within specially designed governance structures, such as trusts or cooperatives, that ensure they remain aligned with the mission over time.

From a financial standpoint, this approach transforms the organization’s balance sheet by converting recurring expenses into owned assets. The benefits are not limited to financial returns but include control, stability, and resilience. Unlike an endowment, where value is mediated through financial markets, real assets provide direct and tangible forms of capital that are embedded within the organization’s operational context.

From accumulating capital to designing financial architecture

Taken together, these alternatives illustrate a shift in how financial sustainability can be understood. Each of these structures also distributes power in different ways. Decisions about how capital is governed, who controls its deployment, and what forms of knowledge are valued are embedded in financial design choices. Endowments concentrate many of these decisions within investment governance structures, while alternative approaches can distribute authority more directly within organizations or communities.

The implication is not that endowments are inherently flawed, but that they are often overgeneralized. They solve one type of financial problem well but are misapplied in situations where other forms of capital would be more effective. Endowments also reshape the organization’s relationship to capital providers. Fundraising strategies often shift toward fewer, larger contributions, which can change both the composition of the donor base and the dynamics of accountability. This introduces additional considerations around concentration of influence and long-term alignment with mission.

A more sophisticated approach, requiring a shift in perspective, involves combining multiple structures into a coherent financial architecture. A reserve fund can provide liquidity, a revolving fund can support ongoing deployment, multi-year commitments can stabilize revenue, and guarantee facilities can expand the overall pool of capital. Real assets can anchor value in ways that financial instruments can’t.

Instead of asking how to build an endowment, organizations and funders must ask how to design a system of capital that aligns with their specific risks, opportunities, and objectives. That shift moves the conversation beyond accumulation of assets and toward a more precise and flexible understanding of financial resilience.

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