Nonprofit UBIT: When a Tax-Exempt Organization Owes Income Tax, What's Excluded, and How Form 990-T Works

A tax-exempt organization owes income tax on the net income of any trade or business it regularly carries on that isn’t substantially related to its exempt purpose, at the 21% corporate rate under IRC 511 (trust rates if it’s set up as a trust), after a $1,000 specific deduction. Investment income, most rent from real property, volunteer-run activities, sales of donated goods and true sponsorships are excluded. The organization files Form 990-T once gross income from unrelated business reaches $1,000, even if the activity lost money, and pays estimated tax once the year’s tax is expected to reach $500.

What counts as unrelated business income?

Income from a trade or business that’s regularly carried on and not substantially related to the organization’s exempt purpose, under IRC 512(a)(1) and IRC 513(a). All three parts have to be present. Relatedness is judged on the activity, so an unrelated business stays unrelated however charitably its profits are spent; 513(a) says so in terms, setting aside “the need of such organization for income or funds or the use it makes of the profits derived.”

• A trade or business. 513(c) covers “any activity which is carried on for the production of income from the sale of goods or the performance of services,” and an activity “does not lose identity as a trade or business merely because it is carried on within a larger aggregate of similar activities.” That’s the fragmentation rule: the advertising pages in a related journal, and the branded mugs in a related gift shop, are each judged on their own.
• Regularly carried on. Reg. 1.513-1(c) looks at “the frequency and continuity with which the activities productive of the income are conducted and the manner in which they are pursued,” compared with “comparable commercial activities of nonexempt organizations.” The regulation’s own examples: a hospital auxiliary’s sandwich stand “for only 2 weeks at a state fair” isn’t regular, “the operation of a commercial parking lot on Saturday of each week” is, and “an annual dance or similar fund raising event” isn’t.
• Substantially related. Under Reg. 1.513-1(d)(2) the activity must “contribute importantly to the accomplishment of those purposes,” and the relationship has to be causal and substantial. A university’s concert series for students and the public is related; a professional association’s journal is related while the consumer advertising inside it is not; a museum theater that shows educational films by day and runs as a commercial cinema after the museum closes is an unrelated business in the evening, per Publication 598.
• Payments from a controlled subsidiary. Rent, interest and royalties from an entity the organization controls are pulled back into unrelated income under 512(b)(13) “to the extent such payment reduces the net unrelated income of the controlled entity,” so routing an unrelated business through a taxable subsidiary and stripping its profits out as rent doesn’t work.

What income is excluded from UBIT?

Most passive income, plus three activity-based exceptions. IRC 512(b) excludes dividends, interest, annuities, royalties, most rent from real property and most gains on selling property. IRC 513(a) takes out any business where “substantially all the work” is done without pay, one run “primarily for the convenience” of members, students, patients, officers or employees, and the sale of merchandise “substantially all of which” was donated. Every one of these has an edge where it stops working.

Income	Excluded?	Where the exclusion breaks	Authority
Dividends, interest, annuities	Yes	Debt-financed investments; payments from a controlled subsidiary	512(b)(1), 512(b)(13), 514
Royalties (name, logo, mailing list, content licenses)	Yes	Debt-financed property; payments from a controlled entity	512(b)(2), Reg. 1.512(b)-1(b)
Rent from real property	Yes	Personal property rent above 10% of the lease is taxed on its own and above 50% none of the rent is excluded; rent tied to the tenant’s net profits; space with services to the occupant, which by regulation includes parking lots, hotels and storage garages; debt-financed property	512(b)(3), Reg. 1.512(b)-1(c)
Gains on selling property	Yes	Inventory and property held for sale to customers; debt-financed property	512(b)(5), Reg. 1.512(b)-1(d)
A business run by volunteers	Yes	”Substantially all the work” must be unpaid	513(a)(1)
A convenience business (cafeteria, campus store, hospital pharmacy)	Yes, for 501(c)(3)s and state colleges	Sales to outsiders that are “systematically and consistently promoted”	513(a)(2), Reg. 1.513-1(c)(2)(ii)
A thrift shop selling donated goods	Yes	The stock has to be “substantially all” donated	513(a)(3)
Qualified sponsorship payments	Yes	Advertising; payments contingent on attendance or ratings; acknowledgments in periodicals	513(i), Reg. 1.513-4

• The rent rules in detail. 512(b)(3) excludes “all rents from real property” and the rent on personal property leased with it “if the rents attributable to such personal property are an incidental amount”; Reg. 1.512(b)-1(c)(2)(ii) says personal property rent is “generally … not an incidental amount” once it exceeds “10 percent of the total rents.” The exclusion is lost entirely “if more than 50 percent of the total rent” is for personal property, or if the rent “depends in whole or in part on the income or profits derived by any person from the property leased” other than a fixed percentage of gross receipts.
• Services turn rent into business income. Reg. 1.512(b)-1(c)(5): payments “for the use or occupancy of rooms and other space where services are also rendered to the occupant,” including “the use or occupancy of space in parking lots, warehouses, or storage garages,” don’t count as rent from real property. Maid service is such a service; “the furnishing of heat and light, the cleaning of public entrances … the collection of trash” are not. A building leased to an office tenant is rent. The same organization’s parking lot rented to the public is a business.
• The convenience exception belongs to 501(c)(3) organizations and state colleges only, by the words of 513(a)(2). A 501(c)(6) trade association’s snack bar has to find another exclusion.

Do sponsorships and advertising create UBIT?

Sponsorships don’t and advertising does, and the line is drawn by what the sponsor gets back. A “qualified sponsorship payment” under IRC 513(i) is one with “no arrangement or expectation” of “any substantial return benefit other than the use or acknowledgement of the name or logo (or product lines)” of the sponsor’s business. Once the message carries “qualitative or comparative language, price information … an endorsement, or an inducement to purchase,” it’s advertising, an unrelated business even inside a related publication.

• The regulation’s test. Reg. 1.513-4(c)(2)(v) defines advertising as any message that “promotes or markets any trade or business, or any service, facility or product,” and then closes the obvious workaround: “A single message that contains both advertising and an acknowledgment is advertising.” A logo, a slogan that doesn’t compare or promise, a web address and a product line are acknowledgment. “Best pizza in town, mention this ad” is advertising.
• Two carve-outs from the safe harbor. A payment “contingent upon the level of attendance at one or more events, broadcast ratings, or other factors indicating the degree of public exposure” isn’t a qualified sponsorship payment, and neither is one that buys the sponsor’s name in “regularly scheduled and printed material” that isn’t tied to a specific event, which is how sponsorship pages in a newsletter get analysed as advertising instead.
• Advertising in a related publication is still unrelated. Reg. 1.513-1(d) Example 6: a professional association’s monthly journal is related, but its “regular sale of space and services for general consumer advertising” is “gross income from unrelated trade or business,” and Example 7 says the same for ads aimed at the members’ professional interests. Example 4 reaches the same result for a classical-music station that sells commercial time.

How does the silo rule work?

Each unrelated business is taxed on its own. Since 2018, IRC 512(a)(6) requires an organization with more than one unrelated business to compute the taxable income “separately with respect to each such trade or business,” and a business’s result “shall not be less than zero,” so a loss in one can’t offset a profit in another. Businesses are identified by the first two digits of their NAICS code under Reg. 1.512(a)-6, and all investment activity counts as one business.

• The code rule. An organization “identifies each of its separate unrelated trades or businesses using the first two digits of the North American Industry Classification System code (NAICS 2-digit code) that most accurately describes the unrelated trade or business,” and “will report each NAICS 2-digit code only once.” The regulation’s example: a hospital system with pharmacies at several sites “would include all the pharmacies under the NAICS 2-digit code for retail trade.” The Form 990-T instructions repeat the rule for Schedule A.
• Investments are one silo. Under Reg. 1.512(a)-6(c)(1) an organization’s “investment activities … are treated collectively as a separate unrelated trade or business,” which is where debt-financed investment income and partnership interests land.
• Losses stay home. 512(a)(6)(A) applies the separate computation “including for purposes of determining any net operating loss deduction.” A post-2017 loss carries forward “to each taxable year following the taxable year of the loss” under IRC 172(b)(1)(A), with the deduction capped at “80 percent” of that silo’s taxable income in the year it’s used.
• Costs. Only deductions “directly connected with the carrying on of such trade or business” come off under 512(a)(1). Cost of goods sold, the wages of the people running the activity and the supplies it consumes are easy; the share of the executive director’s time and the building is an allocation you’ll need to show your work on, and the 990-T instructions ask for it silo by silo.

When does debt-financed property create UBIT?

When borrowed money bought or improved an asset that produces income. IRC 514 pulls in a share of the income from “debt-financed property”: the share is the average acquisition indebtedness for the year over the average adjusted basis of the property, and the same share of the deductions comes with it. A rental building with a $600,000 average mortgage and a $1,000,000 average basis has 60% of its net rent taxed, and the share falls as the loan is paid down. Property used for the exempt purpose is carved out.

• The fraction. 514(a)(1) includes the “same percentage (but not in excess of 100 percent) of the total gross income derived during the taxable year from or on account of such property as (A) the average acquisition indebtedness … is of (B) the average amount … of the adjusted basis of such property,” and 514(a)(3) allows depreciation “only by use of the straight-line method.”
• The exempt-use carve-out. 514(b)(1)(A) excludes “any property substantially all the use of which is substantially related” to the exempt purpose, and Reg. 1.514(b)-1(b)(1)(ii) puts “substantially all” at “85 percent or more of the use.” Below that, only the non-exempt portion is debt-financed: the regulation’s example of a college office building half used for administration and half rented out taxes the rental half at the building’s 60% debt-to-basis ratio.
• Land bought for future use. 514(b)(3) leaves land out of the rule when the organization acquires it “for the principal purpose of using the land (commencing within 10 years of the time of acquisition)” for its exempt purpose and the land “is in the neighborhood of other property owned by the organization” already used that way. After the first five years the organization has to satisfy the IRS that the conversion is “reasonably certain.”
• Sales count too. The gain exclusion in 512(b)(5) “does not apply to the gain derived from the sale or other disposition of debt-financed property” under Reg. 1.512(b)-1(d)(1), so a leveraged building sold at a profit produces unrelated income in the year of sale. The self-directed IRA guide works the same rule for retirement accounts.

How is UBIT calculated, and when is Form 990-T due?

Gross income from each unrelated business, less the deductions directly connected with it, summed across the profitable silos, less the $1,000 specific deduction, taxed at 21% for organizations taxed as corporations or at trust rates for trusts. The return is Form 990-T, due the 15th day of the fifth month after year end (the fourth month for employee trusts and IRAs), filed electronically, with an automatic six-month extension on Form 8868 that extends the return and never the payment.

• The filing line is gross income. The instructions require Form 990-T from any organization exempt under 501(a) “if it has gross income of $1,000 or more from a regularly conducted unrelated trade or business,” and “Gross income is gross receipts minus the cost of goods sold.” Churches, which don’t file Form 990, file Form 990-T on the same terms; the instructions even give a diocese or convention of churches one specific deduction per parish or local unit.
• The specific deduction. 512(b)(12) allows “a specific deduction of $1,000,” except “for purposes of computing the net operating loss,” and 512(a)(6)(B) applies it once, after the silos are summed. It’s a flat deduction, so $5,000 of net unrelated income is taxed on $4,000.
• Who pays trust rates. 511(b) taxes a trust that “if it were not for such exemption, would be subject to subchapter J” at the rates in section 1(e). For 2026 the 37% trust bracket starts at $16,000 of taxable income under Rev. Proc. 2025-32; for 2025 returns it started at $15,650 under Rev. Proc. 2024-40. Everyone else, including nearly every 501(c)(3) and 501(c)(6), pays “a tax computed as provided in section 11,” which is 21% under IRC 11(b).
• Deadlines and payment. IRC 6072(e) sets the fifth-month due date. The instructions add that “an employees’ trust defined in section 401(a), an IRA (including SEPs and SIMPLEs), a Roth IRA, a Coverdell ESA, or an Archer MSA must file Form 990-T by the 15th day of the 4th month,” that filers “are required to file electronically,” and that the organization “must pay any tax due in full by the due date of the return without extension.”
• Estimated tax. The instructions require installments “if its estimated tax (tax minus allowable credits) is expected to be $500 or more,” and IRC 6655(f) waives the underpayment addition only where the tax “is less than $500.”
• Public inspection. For a 501(c)(3), IRC 6104(d)(1)(A)(ii) opens “any annual return which is filed under section 6011 … and which relates to any tax imposed by section 511” to the same inspection as the Form 990, so the 990-T isn’t a private document for a charity.
• Nothing changed in 2025. The One Big Beautiful Bill Act left sections 511 to 514 alone; the amendment history for 512 ends with the 2019 repeal of the parking-benefit inclusion in former 512(a)(7), and 2017’s addition of the silo rule before that.

What should I do next?

List every revenue line and run it through the three tests, then through the exclusions, and write the answer down next to each one. For whatever is left, set up a silo in the books with its own revenue, cost of goods sold, directly connected costs and an allocation basis for shared costs you can explain. Check every loan against every asset that produces income, because section 514 is the rule boards forget. Then calendar the fifth-month Form 990-T date and the quarterly payments if the tax will reach $500.

• Nonprofit Form 990 filing guide, the information return that rides alongside the 990-T and its own thresholds and penalties
• Church bookkeeping and fund accounting, for the organizations that skip the 990 and still owe the 990-T
• Nonprofit grant management, keeping grant revenue, which isn’t unrelated income, separate from the lines that might be
• Self-directed IRA real estate: UBIT and UDFI, the same debt-financed rule inside a retirement account
• Nonprofit ERC eligibility, the credit analysis for exempt employers
• Starting a 501(c)(3), where the exempt purpose that every UBIT test points back to gets written down
• The accuracy-related penalty, if an unreported unrelated business turns up on exam

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.