Public universities are not non-profit organizations in the usual legal sense. They are government entities, and they receive a separate, broader federal tax exemption than the 501(c)(3) status that covers private non-profit colleges. So while a public university operates without a profit motive, calling it a “non-profit” misses what it actually is under federal law: an arm of the state.
That distinction shapes how these schools are taxed, how they borrow money, what they owe their employees, and what obligations they carry to the public.
What Public Universities Actually Are Under the Law
Public universities are state instrumentalities. A state creates them through a constitutional provision or a statute that defines the school’s purpose and powers, and they function as extensions of the government rather than independent corporations.1Internal Revenue Service. Exempt Organizations Continuing Professional Education – Integral Parts of Government Private non-profit colleges, by contrast, are formed when individuals file articles of incorporation and then apply to the IRS for tax-exempt status.
The consequences run deeper than paperwork. A public university’s campus is public property held by the state or a governing body acting on behalf of the public. Government status also gives these schools powers a private non-profit cannot claim, including eminent domain and direct legislative appropriations.1Internal Revenue Service. Exempt Organizations Continuing Professional Education – Integral Parts of Government
The Federal Tax Exemption: Section 115, Not 501(c)(3)
The primary federal tax exemption for public universities comes from Internal Revenue Code Section 115. That statute excludes from federal income tax any income derived from an “essential governmental function” that accrues to a state or its political subdivisions.2Office of the Law Revision Counsel. 26 U.S.C. 115 – Income of States, Municipalities, Etc. Higher education counts as such a function, so public universities owe no federal income tax on tuition, state appropriations, or other revenue tied to their educational mission.
Private non-profit colleges take a different path. They qualify under Section 501(c)(3), which requires an application to the IRS, proof that the organization is run exclusively for charitable or educational purposes, and ongoing compliance with restrictions on political activity and private benefit.3Internal Revenue Service. Compliance Guide for 501(c)(3) Public Charities Public universities get their exemption automatically as part of the government. No application needed.
Why Many Public Universities Hold 501(c)(3) Status Too
Even with Section 115 already covering their income, many public universities also obtain 501(c)(3) recognition. Dual status gives donors a well-recognized framework for claiming charitable deductions and simplifies administering employee benefit programs like 403(b) retirement plans.4Internal Revenue Service. IRC 403(b) Tax-Sheltered Annuity Plans
There is a tradeoff. A school relying solely on Section 115 does not have to file IRS Form 990, the annual information return that private non-profits and university-supporting foundations must submit.5Internal Revenue Service. Instructions for Form 990 Return of Organization Exempt From Income Tax Adding 501(c)(3) status brings additional IRS compliance obligations, including limits on lobbying and an absolute prohibition on participating in political campaigns.3Internal Revenue Service. Compliance Guide for 501(c)(3) Public Charities
Where the Exemption Stops: Unrelated Business Income
Tax-exempt status does not cover everything a university does. When a public school earns money from commercial activity that isn’t substantially related to its educational mission, those profits are subject to unrelated business income tax (UBIT). Congress extended UBIT to state colleges and universities so that government-run schools would not have an unfair advantage over private businesses in commercial markets.6Office of the Law Revision Counsel. 26 U.S.C. 511 – Imposition of Tax on Unrelated Business Income
UBIT is charged at the standard 21 percent federal corporate rate. Activities that can trigger it include leasing stadium facilities to professional sports teams, running manufacturing operations unrelated to teaching, or operating retail businesses aimed primarily at the general public.7Internal Revenue Service. The Marketing of Goods and Services by Institutions of Higher Learning – UBIT Implications Revenue directly tied to the educational mission (tuition, research grants, related campus operations) stays exempt. So does passive investment income like dividends, interest, and most real property rental income.3Internal Revenue Service. Compliance Guide for 501(c)(3) Public Charities
No Endowment Excise Tax
Wealthy private colleges pay a federal excise tax on the net investment income of their endowments under IRC Section 4968. For tax years after December 31, 2025, the tax uses a tiered structure with rates from 1.4 percent to 8.4 percent depending on the size of an institution’s per-student endowment.8Office of the Law Revision Counsel. 26 U.S.C. 4968 – Excise Tax Based on Investment Income of Private Colleges and Universities
Public universities are excluded from this tax entirely. The statute carves out state colleges and universities by cross-referencing Section 511(a)(2)(B), which defines them as agencies or instrumentalities of a government.8Office of the Law Revision Counsel. 26 U.S.C. 4968 – Excise Tax Based on Investment Income of Private Colleges and Universities Even public universities with multi-billion-dollar endowments owe nothing under this provision.
Tax-Exempt Bond Financing
Public universities finance construction and renovation projects by issuing tax-exempt municipal bonds through state or local government entities. Under IRC Section 103, interest earned by investors on these bonds is excluded from federal income tax.9Office of the Law Revision Counsel. 26 U.S.C. 103 – Interest on State and Local Bonds Because investors accept lower returns when the interest is tax-free, universities borrow at rates that can run roughly two percentage points below taxable debt. On dormitories, research laboratories, and athletic facilities, the difference adds up.
Private non-profit colleges can also tap tax-exempt bond markets, but they generally use a different mechanism (qualified 501(c)(3) bonds) with tighter restrictions on how the proceeds may be used.
Benefits That Reach Employees
Two federal provisions tied to a public university’s status flow directly to the people who work there.
403(b) retirement plans. Public schools and 501(c)(3) organizations can offer 403(b) tax-sheltered annuity plans, which let employees contribute pre-tax income toward retirement.4Internal Revenue Service. IRC 403(b) Tax-Sheltered Annuity Plans Faculty, researchers, and administrative staff at state schools commonly use these plans alongside or instead of state pension systems.10Internal Revenue Service. Retirement Plans FAQs Regarding 403(b) Tax-Sheltered Annuity Plans
Tax-free tuition reductions. Under IRC Section 117(d), employees of educational institutions can receive tax-free tuition reductions for undergraduate education at their own school or another qualifying institution. The benefit extends to spouses and dependents under Section 132(h). Graduate students working as teaching or research assistants also qualify, even though the general rule caps the exclusion at undergraduate education. One catch: the tuition reduction must be offered on a nondiscriminatory basis. A school cannot limit it to highly compensated employees.11Office of the Law Revision Counsel. 26 U.S.C. 117 – Qualified Scholarships
The Obligations That Come With Being the Government
Government status is not all upside. It brings constitutional duties and transparency requirements that private non-profit colleges do not carry.
First Amendment
The First Amendment restricts government action, and public universities count as government actors bound by it.12Legal Information Institute. State Action Doctrine and Free Speech Campus speech policies, protest regulations, and academic freedom standards at public schools operate under First Amendment constraints that do not apply to private institutions.
Due Process
Students at public universities have a constitutionally protected property interest in their education. Before suspending or expelling a student, the school must provide due process, which at minimum means written notice of the charges, an explanation of the evidence, and a chance to respond.13Justia Law. Goss v. Lopez, 419 U.S. 565 (1975) Heavier penalties can require formal hearings, the ability to question witnesses, or access to an advisor.
Sovereign Immunity
As arms of the state, public universities generally hold Eleventh Amendment sovereign immunity, which limits federal-court lawsuits against them for money damages. Whether a specific university qualifies depends on how much the state controls and funds it and whether a judgment would effectively come from the state treasury.14Constitution Annotated. Amdt11.5.3 Suits Against States Most flagship state universities are treated as arms of the state. States often waive some immunity through tort claims acts, but usually cap the damages a plaintiff can recover.
Public Records and Open Meetings
Because they are government agencies funded by taxpayers, public universities are subject to state public records laws. Citizens can request employee salary information, vendor contracts, and detailed spending records. Governing board meetings are generally open under state open meeting laws, with advance notice and publicly available minutes required. Private non-profit colleges have no equivalent obligation, and their board deliberations are typically confidential. Public universities also publish annual financial reports audited by state auditors or independent firms, covering revenue sources, expenditures, debt levels, and endowment performance.
What “Non-Profit” Really Means Here
Public universities have no shareholders, owners, or investors. Any revenue that exceeds expenses is reinvested in teaching, research, and public service, and no part of net earnings may benefit private individuals. That last rule applies equally to public and private non-profit educational institutions.3Internal Revenue Service. Compliance Guide for 501(c)(3) Public Charities In everyday speech, calling a state school “non-profit” is close enough. In legal and tax terms, the more accurate description is a government instrumentality that operates under a different, and in several ways broader, set of federal exemptions than a private non-profit college.