How Much Do Nonprofits Have to Donate? The 5% Rule

How much do nonprofits have to donate depends entirely on how the IRS classifies the organization. Public charities have no minimum spending requirement under federal law. Private foundations do: they must distribute at least 5% of their net investment assets each year for charitable purposes, or pay a steep excise tax on the shortfall.

The word “donate” is also a bit misleading. A nonprofit spends money to advance its charitable mission, whether by making grants, running its own programs, or paying reasonable operating costs. The rules below govern that spending, not “donations” in the everyday sense.

The 5% Payout Rule for Private Foundations

A private foundation is typically funded by a single source — an individual, a family, or a corporation. Because Congress did not want wealthy donors parking assets in a tax-advantaged structure indefinitely without ever putting them to charitable use, Internal Revenue Code Section 4942 requires a private non-operating foundation to distribute at least 5% of its net investment assets each year.¹

“Net investment assets” means assets not directly used in charitable activities, such as stocks, bonds, and investment real estate, minus any debt incurred to acquire them. The IRS values publicly traded securities monthly and averages those values over the year rather than relying on a single year-end snapshot.

What Counts Toward the 5%

The 5% payout must consist of “qualifying distributions,” and that category is broader than most people assume. Grants to a public charity are the most straightforward form, but they are not the only one. Qualifying distributions also include:

Direct charitable program costs the foundation incurs running its own programs, such as funding research it conducts itself or operating a museum.
Reasonable administrative expenses, including staff salaries and travel, when they are necessary to carry out the foundation’s exempt activities.²
Assets acquired for exempt use, such as purchasing a building to house a charitable program.
Set-asides for specific projects, if the project will be funded within five years and the IRS approves the set-aside.¹

Investment management fees do not count. Expenses tied to managing the foundation’s endowment serve its financial interests, not its charitable mission, so they fall outside the definition. When an expense serves both purposes, the IRS requires the foundation to allocate it on a reasonable and consistent basis.²

Carrying Excess Distributions Forward

A foundation that distributes more than 5% in a given year can carry the excess forward and apply it against future requirements. The carryover period is five years. Any excess not used within that window expires, and a foundation cannot refresh expiring carryovers by reclassifying current-year distributions as coming from a prior year’s surplus.³ This gives foundations room to make a large one-time grant without locking themselves into an artificially even schedule afterward.

Penalties for Falling Short

The consequences for missing the annual distribution requirement escalate quickly. If undistributed income remains unspent by the start of the second tax year after it should have been distributed, the IRS imposes an initial excise tax of 30% on the shortfall. If the foundation still has not corrected the shortfall by the end of the “taxable period” (which runs until the IRS mails a deficiency notice or the tax is assessed), an additional tax of 100% applies to whatever remains undistributed.¹

That 100% second-tier tax is not a typo. Congress designed it to make hoarding assets inside a foundation more expensive than distributing them. In practice, most foundations that trip the initial 30% tax correct the problem quickly.

The 1.39% Excise Tax on Investment Income

Separate from the payout rule, every private foundation owes an annual excise tax of 1.39% on its net investment income. This applies to interest, dividends, rents, royalties, and net capital gains, and it applies regardless of whether the foundation meets its 5% distribution obligation.⁴ Foundations report and pay it on Form 990-PF, which all private foundations must file annually regardless of size.⁵

Private Operating Foundations Follow a Different Standard

Not every private foundation follows the 5% rule. A private operating foundation, one that directly runs its own charitable programs rather than primarily making grants to other organizations, faces a separate test. Instead of distributing 5% of net investment assets, it must spend at least 85% of the lesser of its adjusted net income or its minimum investment return directly on its own exempt activities.⁶

A private museum funded by a single family is the classic example. Rather than writing grants to other charities, it spends money running the museum. As long as at least 85% of the relevant income goes into those operations, it satisfies the income test for operating foundation status.

Why Public Charities Have No Spending Floor

Most 501(c)(3) organizations people recognize by name, from food banks to universities to animal shelters, are classified as public charities. No federal law tells these organizations they must spend a specific percentage of their income or assets on programs in any given year. Their central financial obligation is to demonstrate broad public support, not to hit a spending target.

A public charity sitting on large reserves while spending almost nothing on its mission would draw attention from state regulators, donors, and the media. The absence of a legal spending floor does not mean spending patterns are irrelevant. The enforcement mechanism is transparency and public accountability rather than a hard statutory rule.

The Public Support Test

To keep public charity status, an organization must pass the IRS “public support test.” The primary version requires that at least one-third of total support come from government sources, other public charities, or the general public, measured over a rolling five-year period and reported on Schedule A of the Form 990. Organizations that fall between 10% and one-third can still qualify by demonstrating, under all the facts and circumstances, that they genuinely operate as publicly supported.⁷

An organization that fails the test does not lose tax-exempt status. It is reclassified as a private foundation, which triggers the 5% payout rule, the 1.39% excise tax on investment income, and additional reporting.⁸ A charity that loses a major government grant may not realize it has failed until it files its next return, at which point it is already subject to rules it may not have the infrastructure to handle.

Excess Benefit Rules

The absence of a spending mandate for public charities does create a risk: insiders could divert funds to themselves through inflated salaries or sweetheart deals. The excess benefit rules serve as the guardrail. If a “disqualified person” receives compensation or benefits beyond what is reasonable, the initial tax on the recipient is 25% of the excess amount. Any organization manager who knowingly approved the transaction owes 10% of the excess, capped at $20,000 per transaction. If the excess is not returned within the correction period, the recipient faces an additional 200% tax.⁹

Form 990 as the Real Enforcement Mechanism

The primary check on public charity spending is not a payout rule but public disclosure. Most tax-exempt organizations must file some version of the Form 990, which breaks down revenues, expenses, executive compensation, and program accomplishments.¹⁰ These returns are publicly available, so donors, journalists, and watchdog organizations can see how a charity spends its money. That transparency is, by design, the substitute for a mandated spending percentage.

State Rules Add Another Layer

Beyond the IRS, nonprofits answer to the state where they are incorporated and any state where they solicit donations. No state imposes a specific payout percentage like the federal rule for private foundations, but states regulate financial conduct in other ways. Many require charities and their professional fundraisers to register before soliciting donations, with annual financial reports as part of the registration. Some states scrutinize the ratio of fundraising costs to program spending as a measure of whether solicitations are deceptive.

Nearly every state and the District of Columbia has adopted a version of the Uniform Prudent Management of Institutional Funds Act, with Pennsylvania as the lone holdout. UPMIFA does not dictate how much a charity must spend. It sets a fiduciary standard for how boards manage and invest charitable funds, weighing factors like the fund’s purpose, economic conditions, inflation, expected returns, and the organization’s other resources. Board members who ignore those obligations face legal liability, even where no minimum spending rule applies.

1
Office of the Law Revision Counsel. 26 USC 4942 – Taxes on Failure to Distribute Income
2
Internal Revenue Service. Directly for the Conduct of Exempt Activities
3
Internal Revenue Service. Private Foundations: Carryover of Excess Qualifying Distributions
4
Office of the Law Revision Counsel. 26 USC 4940 – Excise Tax Based on Investment Income
5
Internal Revenue Service. Instructions for Form 990-PF (2025)
6
Internal Revenue Service. Private Operating Foundation – Income Test
7
Internal Revenue Service. Form 990, Schedules A and B: Facts and Circumstances Public Support Test
8
Internal Revenue Service. Advance Ruling Process Elimination – Public Support Test
9
Office of the Law Revision Counsel. 26 US Code 4958 – Taxes on Excess Benefit Transactions
10
Internal Revenue Service. Form 990 Series: Which Forms Do Exempt Organizations File