Nonprofits do not pay federal income tax on donations. An organization recognized by the IRS under Section 501(c)(3) is exempt from income tax on money it receives in support of its charitable mission, and a straightforward gift from a donor sits squarely inside that exemption.1Internal Revenue Service. Exempt Organization Types The fuller answer has edges to it, though. Not every dollar a nonprofit receives is a donation, not every kind of income is tax-free even when the donations are, and the exemption itself can be lost if the organization misses certain obligations.
What Actually Counts as a Donation
A donation is a voluntary transfer of cash or property where the donor gets nothing of significant value in return. A check written to a food bank with no strings attached is a donation, and the food bank owes no tax on it. A museum admission fee is not a donation, because the payer receives entry. Tuition paid to an educational nonprofit is a fee for service. These distinctions matter because only the donation side of the ledger enjoys the clean exemption.
Mixed payments are common and have their own rule. If a donor pays $200 for a gala ticket and the dinner is worth $80, only the $120 above fair market value is a charitable contribution. The IRS calls this a quid pro quo contribution, and when the payment exceeds $75 the nonprofit is required to give the donor a written disclosure stating the fair market value of what they received, so the donor can figure out the deductible portion.2Internal Revenue Service. Charitable Contributions: Quid Pro Quo Contributions Skipping that disclosure carries penalties.
Paperwork the Nonprofit Owes the Donor
For any single contribution of $250 or more, the organization must give the donor a written acknowledgment that names the nonprofit, states the cash amount or describes the property donated, and says whether any goods or services were provided in return. If anything was provided, the acknowledgment has to include a good-faith estimate of its value.3Internal Revenue Service. Charitable Contributions: Written Acknowledgments Without that letter the donor cannot claim the deduction, so this is as much a donor-relations matter as a compliance one.
Non-cash gifts worth more than $5,000 require the donor to file Form 8283 with a qualified appraisal attached. The nonprofit’s part is to sign the donee acknowledgment section confirming it received the property. The nonprofit is not vouching for the appraised value, only for the fact of the gift.4Internal Revenue Service. Instructions for Form 8283
Income That Is Taxable Even Though Donations Are Not
The donation exemption does not stretch to every revenue stream. The biggest exception is the Unrelated Business Income Tax, or UBIT. If a nonprofit earns money from an activity that has nothing to do with its charitable mission, that income is taxed at the regular 21% corporate rate.
The IRS applies a three-part test: the income has to come from a trade or business, the activity has to be regularly carried on, and the activity cannot be substantially related to the organization’s exempt purpose.5Internal Revenue Service. Unrelated Business Income Tax One point trips up a lot of boards: an activity isn’t related to the mission just because the profits fund mission work. The activity itself has to advance the mission.
A nonprofit with $1,000 or more in gross unrelated business income has to file Form 990-T, and if the expected tax runs $500 or more for the year, quarterly estimated payments are required too. A $1,000 specific deduction is available against unrelated business taxable income, which means small amounts of unrelated revenue often produce no tax after filing.6Internal Revenue Service. Publication 598 – Tax on Unrelated Business Income of Exempt Organizations
Several categories of income are specifically excluded from UBIT even when the activity is unrelated to the mission:7Internal Revenue Service. Unrelated Business Income Tax Exceptions and Exclusions
- Activities where substantially all the work is done by unpaid volunteers. A volunteer-run bake sale is the textbook case.8Internal Revenue Service. Volunteer Labor Exclusion From Unrelated Trade or Business
- Sales of donated merchandise, such as thrift store operations.
- Passive investment income, including dividends, interest, annuities, royalties, and most rental income from real property.
The passive-income exclusion has a wrinkle for property bought with borrowed money. When a nonprofit uses debt to acquire investment property, a share of the income from that property loses the passive exclusion and gets pulled into UBIT, roughly in proportion to how much of the property is financed. Finance 75% of a rental building and about 75% of the rent is unrelated business income.9Internal Revenue Service. Unrelated Business Income From Debt-Financed Property Under IRC Section 514 Property used at least 85% for the exempt purpose is not treated as debt-financed, and the usual UBIT exclusions still protect debt-financed property used in a volunteer-run business or to sell donated goods.
Payroll Taxes Still Apply
Tax-exempt status is not a pass on employment taxes. A nonprofit with paid staff withholds Social Security and Medicare taxes from employee wages and pays the matching employer share, exactly like a for-profit employer. Federal income tax withholding and the usual payroll tax returns are also required.10Internal Revenue Service. Exempt Organizations: What Are Employment Taxes?
There is one genuine break. Organizations described in Section 501(c)(3) do not pay Federal Unemployment Tax Act (FUTA) taxes.11Internal Revenue Service. Section 501(c)(3) Organizations – FUTA Exemption Employees remain eligible for unemployment benefits; most states simply require the nonprofit to reimburse the state for benefits paid rather than pay into the FUTA system. Falling behind on payroll deposits is one of the fastest ways for a nonprofit to find itself in serious trouble with the IRS, exempt status notwithstanding.
File Every Year or Lose the Exemption
Almost every tax-exempt organization has to file an annual information return, even in a year with nothing but donation income and no tax to pay. Which form depends on size: Form 990-N (the electronic “e-Postcard”) for organizations with gross receipts normally $50,000 or less; Form 990-EZ for those with gross receipts under $200,000 and total assets under $500,000; and the full Form 990 at or above those thresholds.12Internal Revenue Service. Form 990 Series: Which Forms Do Exempt Organizations File Churches and certain religious organizations are among the few groups not required to file at all.13Internal Revenue Service. Annual Exempt Organization Return: Who Must File
The consequence of ignoring this is severe. Miss the filing for three straight years and the exemption is revoked automatically, by operation of law, on the due date of the third missed return. There is no warning and no advance appeal.14Internal Revenue Service. Automatic Revocation of Exemption After revocation the organization must reapply from scratch, and income earned during the gap, including donations, may be taxable. Small organizations are most at risk, often because they assume the brief e-Postcard is optional.
Other Ways to Forfeit the Exemption
Running afoul of the political campaign ban can also cost a 501(c)(3) its status. The prohibition on participating in any campaign for or against a candidate is absolute, covering contributions, endorsements, and statements that could be read as taking sides.15Office of the Law Revision Counsel. 26 U.S. Code 501 – Exemption From Tax on Corporations, Certain Trusts, Etc. Violations trigger excise taxes on both the organization and the managers who approved the spending, and the IRS can revoke the exemption on top of those taxes.16Office of the Law Revision Counsel. 26 U.S. Code 4955 – Taxes on Political Expenditures of Section 501(c)(3) Organizations Lobbying on legislation is allowed in moderation; nonpartisan voter registration drives and candidate forums are fine.
Insider dealings are the other common path to trouble. A 501(c)(3) exists to serve the public, and none of its net earnings can benefit a private individual beyond reasonable pay for services rendered. When an officer, director, or key employee receives compensation or another benefit above fair market value, the IRS can treat it as an excess benefit transaction and impose intermediate sanctions under Section 4958, with excise taxes falling on both the recipient and any managers who approved the deal. In serious cases revocation remains available.17Internal Revenue Service. Intermediate Sanctions Documenting compensation decisions and benchmarking against comparable organizations is the practical defense.
State and Local Taxes Are a Separate Question
Federal exemption does not automatically carry over to state and local taxes. States set their own rules, and many require a separate application for state income or franchise tax exemption. A nonprofit operating in multiple states may need to apply in each one.
Sales tax is where nonprofits most often get caught. Many states require nonprofits to pay sales tax on their purchases unless they obtain a specific state exemption certificate, and some require nonprofits to collect sales tax on items they sell. Renewal cycles vary from permanent certificates to short-term ones.
Property tax exemptions follow the same pattern. Most states offer them, but eligibility typically depends on the property being used primarily or exclusively for charitable purposes as the state defines them. A nonprofit that rents part of its building to a commercial tenant may find that portion fully taxable. Because the rules are set at the state and sometimes municipal level, the only reliable path is to check with the local taxing authority before assuming anything.