How Do Nonprofits Make Money? Revenue Streams and Tax Rules

Nonprofits make money the same ways most organizations do — they solicit donations, win grants, charge fees for services, collect membership dues, invest their reserves, and run fundraising events. What sets them apart is not a ban on earning revenue but a tax classification. Under Section 501 of the Internal Revenue Code, a recognized nonprofit can bring in as much money as it can raise, provided no portion benefits a private individual or insider and every dollar ultimately serves the organization’s charitable purpose.¹ Six revenue streams do most of the work, and each carries its own rules.

Donations From Individuals and Businesses

Contributions are the most familiar source. Individual donors give one-time or recurring gifts; corporations give through social responsibility programs, usually to organizations whose mission aligns with the company’s values. Gifts arrive either restricted to a specific project or unrestricted for general use, and misusing a restricted donation can bring legal disputes or scrutiny from state regulators.

For any single contribution of $250 or more, federal tax law requires the organization to provide a written acknowledgment before the donor can claim a deduction.² That acknowledgment states the cash amount (or describes any donated property) and says whether the organization gave anything in return. The donor must have it in hand by the time they file their return for that year.³

Donated Property

Non-cash gifts add paperwork. When a donor claims a deduction over $5,000 for donated property, the organization signs Form 8283 with its taxpayer identification number and the receipt date. If the organization later sells or disposes of that property within three years, it files Form 8282 with the IRS and sends a copy to the donor.⁴ Donated services are not deductible by the donor, so volunteer time carries no valuation obligation.

Government and Foundation Grants

Grants are formal agreements, not gifts. The organization commits to specific outcomes within a defined performance period and reports back on how every dollar was spent. Federal grants follow the Uniform Guidance, which covers allowable costs and audit thresholds.⁵ Missing those requirements can mean returning unspent funds or being barred from future federal awards.

Federal grants also allow indirect cost recovery — reimbursement for overhead like utilities, accounting, and rent that supports the grant-funded work. An organization without a negotiated indirect cost rate can elect a de minimis rate of up to 15 percent of modified total direct costs, no documentation required.⁶ Many smaller nonprofits never claim it. Private foundation grants typically fund pilot programs or capacity-building work and set their own reporting timelines.

Program Service Fees

Charging for services tied to the mission is standard. Hospitals bill for care, universities charge tuition, museums sell admission, counseling centers collect session fees. Earned income of this kind is fully consistent with tax-exempt status as long as the activity is substantially related to the organization’s charitable purpose.⁷

The trouble starts when a fee-generating activity strays from the mission. A university charging tuition is earning exempt program revenue. That same university running a commercial parking garage open to the public may owe tax on the garage income. Clean accounting keeps exempt fees separate from any commercial revenue that falls outside the mission.

Membership Dues

Professional associations, trade groups, and civic clubs collect recurring dues in exchange for benefits like voting rights, publications, event access, or professional resources. Bylaws must define what members get, and dues revenue must match what the organization reports on its annual filings.

Not all dues count as “public support” for maintaining public charity status. When dues essentially pay for goods or services — access to a members-only facility, for instance — only the portion above the fair market value of those benefits is a charitable contribution. The rest is program service revenue.⁸

Investment Income

Reserves and endowments generate interest, dividends, and capital gains. Federal law excludes these passive returns from unrelated business income tax as long as they are not tied to debt-financed property.⁹ Royalties and most rental income from real property fall under the same exclusion.

Leverage changes the picture. If an organization borrows to buy an income-producing investment, such as taking out a mortgage on a rental property, a proportional share of the income becomes taxable as unrelated debt-financed income. The taxable percentage equals the ratio of outstanding debt to the property’s adjusted basis.¹⁰ Property substantially related to the exempt purpose is excluded from the rule.

Fundraising Events, Raffles, and Merchandise

Galas, auctions, fun runs, and similar events raise money while building community. Many involve what the IRS calls a “quid pro quo contribution,” where the donor receives something in return, such as a meal or a ticket. When that payment exceeds $75, the organization must provide a written disclosure telling the donor that only the amount above the fair market value of what they received is deductible, along with a good-faith estimate of that value.¹¹ The disclosure requirement applies even when the deductible portion itself is under $75.¹²

Raffles and Gaming

Raffles carry federal withholding rules. If a prize minus the ticket cost exceeds $5,000, the organization withholds federal income tax at 24 percent from the winnings. For noncash prizes like a car, withholding applies at 24 percent of fair market value minus the ticket cost; if the organization pays the withholding on the winner’s behalf, the effective rate rises to 31.58 percent.¹³ Most states also require a permit before an organization can legally hold a raffle.

Merchandise

Branded T-shirts, tote bags, and other merchandise can raise money, but tax treatment depends on the mission connection. A literacy nonprofit selling books earns exempt revenue. A general-purpose mug sold purely for fundraising may trigger unrelated business income tax. Two exceptions matter: sales of donated goods (thrift store inventory) and sales where substantially all the work is done by unpaid volunteers are both exempt from UBIT regardless of the items’ connection to the mission.¹⁴

When Earned Revenue Becomes Taxable

Any income from a trade or business that is regularly carried on and not substantially related to the exempt purpose is subject to unrelated business income tax at the standard 21 percent corporate rate.¹⁵¹⁶ An organization with $1,000 or more in gross unrelated business income must file Form 990-T.¹⁷

Common exceptions keep everyday activities out of the UBIT net:

Any trade or business where substantially all the work is done by unpaid volunteers, such as a volunteer-run bake sale.
Sales of donated merchandise, as most thrift shops do, regardless of mission relation.
Convenience activities, like a campus bookstore or hospital cafeteria run primarily for students, patients, or employees of a 501(c)(3).
Bingo games that meet specific legal requirements.
Passive investment income — dividends, interest, annuities, royalties, most real-property rent, and capital gains.

These carve-outs are laid out in the statute and IRS guidance.¹⁴⁹ Some unrelated income by itself does not endanger exempt status. If unrelated activities grow into a substantial part of operations, the IRS may question whether the organization still qualifies.

Why the Funding Mix Matters

The sources a nonprofit relies on affect its classification, not just its budget. Organizations classified as public charities under Section 509(a)(1) must show that at least one-third of total support comes from public sources — individual donations, government grants, and similar contributions — measured over a rolling period. An organization below that threshold but at 10 percent or above may still qualify under a facts-and-circumstances test.¹⁸

Section 509(a)(2) uses a two-part test: more than one-third of total support must come from gifts, grants, membership fees, or gross receipts from exempt-purpose activities, and no more than one-third can come from gross investment income and unrelated business income combined. Failing these tests can mean reclassification as a private foundation, which brings stricter payout requirements, excise taxes on investment income, and tighter self-dealing restrictions. The math gets reported each year on Schedule A of Form 990.⁸

Compliance That Keeps the Money Flowing

Nearly every tax-exempt organization files an annual information return — Form 990, 990-EZ, or 990-N depending on size — by the 15th day of the fifth month after its fiscal year ends. Missing that filing for three consecutive years triggers automatic revocation of tax-exempt status, effective on the third missed due date.¹⁹

Private Inurement

No part of a 501(c)(3)’s net earnings may benefit a private individual, typically a board member, officer, or key employee. If an insider receives compensation or benefits above fair market value for their services, the IRS can impose a 25 percent excise tax on the excess. If the overpayment is not corrected promptly, a second tax of 200 percent applies.²⁰ In severe cases the organization itself can lose exempt status.¹

State Charitable Solicitation Registration

Before soliciting donations from the public, most nonprofits register with one or more state agencies. Requirements, fees, and renewal deadlines vary widely. Annual fees run from nothing to several hundred dollars depending on state and revenue, and some states add rules when the organization uses a paid fundraising firm. Failing to register can bring fines or a cease-and-desist order until the organization comes into compliance.²¹

1
Office of the Law Revision Counsel. 26 USC 501 – Exemption From Tax on Corporations, Certain Trusts, Etc.
2
Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts
3
Internal Revenue Service. Charitable Contributions – Written Acknowledgments
4
Internal Revenue Service. Publication 526 – Charitable Contributions
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eCFR. 2 CFR Part 200 – Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards
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eCFR. 2 CFR Part 200 Subpart E – Direct and Indirect Costs
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Internal Revenue Service. Unrelated Business Income Defined
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Internal Revenue Service. 2025 Instructions for Schedule A (Form 990)
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Office of the Law Revision Counsel. 26 USC 512 – Unrelated Business Taxable Income
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Office of the Law Revision Counsel. 26 USC 514 – Unrelated Debt-Financed Income
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Office of the Law Revision Counsel. 26 USC 6115 – Disclosure Related to Quid Pro Quo Contributions
12
Internal Revenue Service. Substantiating Charitable Contributions
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Internal Revenue Service. Instructions for Forms W-2G and 5754
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Internal Revenue Service. Unrelated Business Income Tax Exceptions and Exclusions
15
Office of the Law Revision Counsel. 26 USC 511 – Imposition of Tax on Unrelated Business Income
16
Office of the Law Revision Counsel. 26 USC 11 – Tax Imposed
17
Internal Revenue Service. Unrelated Business Income Tax
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Internal Revenue Service. Basic Determination Rules for Publicly Supported Organizations and Supporting Organizations
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Internal Revenue Service. Automatic Revocation of Exemption
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Office of the Law Revision Counsel. 26 USC 4958 – Taxes on Excess Benefit Transactions
21
Internal Revenue Service. Charitable Solicitation – State Requirements