In the toolkit of sophisticated philanthropy, program-related investments occupy a peculiar and powerful niche. They are neither grants nor conventional investments. They deploy capital into mission-aligned ventures, expect (and often receive) repayment, and satisfy the IRS’s distribution requirements that govern private foundations—all simultaneously. For foundations willing to navigate their complexity, PRIs can extend philanthropic impact far beyond what grant dollars alone could achieve.
What a Program-Related Investment Actually Is
Under Section 4944 of the Internal Revenue Code, a private foundation is generally prohibited from making “jeopardizing investments”—transactions that sacrifice financial return for non-financial objectives. PRIs are the explicit exception. The IRS permits foundations to make below-market loans, loan guarantees, equity investments in social enterprises, and other financial instruments to mission-aligned recipients, provided three conditions are met.
First, the primary purpose must be to accomplish one or more of the foundation’s exempt purposes. Second, no significant purpose of the investment can be the production of income or the appreciation of property. Third, no purpose of the investment may be lobbying or political influence.
When these conditions are satisfied, the investment counts toward the foundation’s mandatory five-percent annual distribution requirement—the same as a grant. This is the regulatory insight that makes PRIs powerful: repayable capital can satisfy the same legal obligation as non-repayable capital, effectively doubling or tripling the foundation’s philanthropic deployment over time as repaid funds are recycled into new investments.
The Mechanics: How PRIs Differ From Grants
The practical difference between a PRI and a grant begins at the term sheet. A grant transfers ownership of funds to the recipient with no expectation of return. A PRI creates an obligation—debt to be repaid, equity to be liquidated, a guarantee that may eventually be called.
This creates accountability dynamics that grants do not. A nonprofit receiving a PRI loan must demonstrate it can generate sufficient revenue to service the debt—through earned income, future grants, government contracts, or other sources. This disciplines organizational strategy in ways that pure grant dependence does not. For organizations capable of generating revenue, the discipline is often beneficial. For organizations serving populations with no ability to pay for services, the discipline can be a mismatch.
PRIs also involve legal documentation that grants do not require: promissory notes for loans, operating agreements for equity investments, guarantee agreements for credit enhancements. Foundations making PRIs need legal counsel experienced in both nonprofit law and financial instruments—an additional operational cost that smaller foundations may find prohibitive.
Common Applications
Affordable housing loans. Among the most established PRI applications, below-market loans to community development financial institutions (CDFIs) and affordable housing developers have a decades-long track record. A foundation might lend $5 million at two percent over 10 years to a CDFI, which on-lends to affordable housing projects in its service area. When the loan is repaid, the foundation redeploys the capital. Ford, MacArthur, and Robert Wood Johnson foundations have extensive PRI portfolios in this space.
Microfinance equity. Early-stage microfinance institutions often cannot access commercial capital at rates consistent with serving the very poor. Foundation equity investments provide patient capital during the institution’s growth phase, with the expectation of eventual repayment as the organization achieves financial sustainability. The Omidyar Network has used PRIs extensively in this domain, investing in microfinance institutions across South Asia and sub-Saharan Africa.
Social enterprise equity and near-equity. Social enterprises—businesses that generate revenue while pursuing social objectives—often inhabit a gap between philanthropy and commercial investment. They generate some revenue but cannot sustain commercial debt service. PRIs in the form of revenue-based financing, recoverable grants, or preferred equity can bridge this gap. The Gates Foundation has used PRIs to capitalize pharmaceutical companies willing to develop drugs for neglected tropical diseases at regulated prices.
Loan guarantees. Rather than deploying capital directly, a foundation can guarantee a portion of a loan made by a commercial bank to a mission-aligned borrower. The guarantee reduces the bank’s risk, enabling lending at affordable rates to organizations the bank would otherwise not serve. The guarantee counts as a PRI even if it is never called—and when it is called, the foundation’s exposure is limited to the guaranteed portion.
IRS Requirements and Risk Management
The IRS has issued numerous private letter rulings and revenue procedures clarifying what does and does not qualify as a PRI. Foundations considering novel PRI structures should seek a private letter ruling before committing capital—an expensive and time-consuming process but one that eliminates regulatory uncertainty.
Due diligence for PRIs must assess both mission alignment and financial viability. A PRI to a financially insolvent organization is not automatically disqualified, but the foundation must document that the investment is nevertheless reasonably expected to accomplish the exempt purpose. For loan PRIs, underwriting should assess the borrower’s revenue streams, debt coverage ratios, and realistic path to repayment.
Foundations must also monitor PRIs as part of their investment oversight obligations. Unlike grants, which are typically subject to programmatic reporting but not financial covenants, PRI loans may include financial reporting requirements, covenant compliance, and site visits. The monitoring burden is meaningful—a foundation with a $50 million PRI portfolio should expect significant staff time devoted to portfolio management.
When PRIs Outperform Grants
The case for PRIs over grants is strongest when several conditions align. The recipient organization generates revenue or has a credible path to doing so. The capital need is large enough that repayment and recycling materially extend philanthropic impact. The foundation has or can acquire the legal and financial expertise to structure and monitor the investment. And the mission alignment is clear enough to satisfy the primary-purpose test.
Conversely, grants remain preferable when the recipient serves populations with no ability to generate revenue; when the capital need is for core operating expenses rather than balance-sheet-strengthening assets; when the foundation lacks capacity to manage the additional complexity; or when the amount involved does not justify the transaction costs.
The Emerging Role of Mission-Related Investments
PRIs are sometimes confused with mission-related investments (MRIs), but the distinction matters. PRIs satisfy the distribution requirement and must pass the primary-purpose test. MRIs are investments made from a foundation’s endowment that are aligned with its mission but are expected to generate market-rate returns—they do not satisfy the distribution requirement and are not governed by Section 4944.
The most sophisticated foundations manage all three levers simultaneously: grants for unrestricted capacity-building and advocacy; PRIs for large-scale, revenue-generating mission work; and MRIs that ensure the endowment itself does not undermine the foundation’s mission through harmful holdings.
This integrated approach—sometimes called total portfolio activation—represents the frontier of institutional philanthropy. It treats the entire balance sheet as a tool for social change, not merely the five percent distributed annually. For foundations willing to invest in the legal, financial, and programmatic expertise required, it dramatically expands the territory available for impact.
The conversation around PRIs ultimately returns to a question of ambition. Are private foundations satisfied with annual grant-making as their primary instrument? Or are they willing to engage the full range of financial tools available to them in the pursuit of change that markets alone will not produce? Program-related investments, at their best, are a commitment to the latter.
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