Nonprofit UBIT: When Tax-Exempt Organizations Owe Income Tax

A 501(c)(3) organization does not pay income tax on revenue from its exempt-function activities. But when it earns income from a trade or business that is regularly carried on and not substantially related to its exempt purpose, that income is “unrelated business income” (UBI) and is taxed at the regular corporate rate (21% for organizations taxed as corporations, or the individual rates for trusts taxed as trusts). The tax is reported on Form 990-T, which is filed in addition to (not instead of) the organization’s annual Form 990. The filing threshold is $1,000 in gross UBI, and that threshold applies to gross income, not net, so an activity that generates $2,000 in revenue and $5,000 in expenses still triggers the filing requirement even though no tax is owed.

What counts as unrelated business income?

Three conditions must all be met for income to be UBI under IRC 512(a)(1):

It comes from a trade or business. The activity must have the characteristics of a trade or business: it is carried on for the production of income from selling goods or performing services. This is a broad definition, and almost any revenue-generating activity qualifies.

The trade or business is regularly carried on. An activity that occurs occasionally or sporadically is not “regularly carried on.” A nonprofit that holds one fundraising dinner per year where it charges admission is not regularly carrying on a restaurant business. A nonprofit that operates a coffee shop five days a week, 50 weeks a year, is regularly carrying on a food service business. The IRS compares the frequency and continuity of the activity to how a comparable for-profit business operates.

The trade or business is not substantially related to the organization’s exempt purpose. The activity must contribute importantly to the accomplishment of the organization’s exempt purposes (other than through the production of income). A university bookstore that sells textbooks to students is substantially related to the educational mission. The same bookstore selling branded apparel to the general public is not substantially related, and the apparel revenue is UBI. The “substantially related” test looks at the activity itself, not the use of the income; using UBI profits to fund exempt activities does not make the activity related.

Common examples of UBI for nonprofits:

• Advertising revenue in an exempt organization’s publication (the editorial content is related, but the advertising is a separate business)
• Rental income from debt-financed property (under the IRC 514 debt-financed income rules)
• Revenue from commercial services provided to non-members or the general public
• Parking lot revenue from spaces rented to the public (beyond what is needed for the organization’s own use)
• Fees from licensing the organization’s name or mailing list for commercial use

What is excluded from UBI?

The exclusions under IRC 512(b) are broad and cover most passive income:

Dividends, interest, and annuities. Investment income from stocks, bonds, bank accounts, and annuity contracts is excluded. This is the most important exclusion for organizations with endowments or investment portfolios.

Royalties. Payments for the use of intellectual property (trademarks, patents, copyrights) are excluded. Licensing the organization’s name for use on merchandise is a royalty if the organization does not provide services beyond the license. If the organization actively participates in the marketing or production, the income may not be a royalty.

Capital gains. Gains from the sale or exchange of property (stocks, bonds, real estate) are excluded, unless the property was held primarily for sale to customers in the ordinary course of business (dealer property).

Rental income from real property. Rents from real property are excluded, unless the property is debt-financed (in which case the portion of rental income attributable to the debt is UBI under IRC 514) or the rental involves substantial personal services (hotel-style services, for example).

Income from activities staffed substantially by volunteers. If substantially all the work in carrying on the trade or business is performed without compensation, the income is excluded. A thrift store operated almost entirely by volunteers is not UBI, even though it is a regularly carried-on retail business.

Revenue from selling donated merchandise. A thrift store that sells goods donated by the public is excluded because the merchandise was donated, not purchased for resale.

Convenience income. Revenue from an activity carried on primarily for the convenience of the organization’s members, students, patients, or employees. A hospital cafeteria serving staff and patients is a convenience activity; revenue from it is not UBI.

Qualified sponsorship payments. Payments by a sponsor in exchange for acknowledgment (the sponsor’s name and logo) are excluded under IRC 513(i). The exclusion breaks when the acknowledgment becomes advertising (qualitative or comparative language, calls to action, pricing information, or endorsements).

How does the silo rule work?

The Tax Cuts and Jobs Act of 2017 added IRC 512(a)(6), which requires organizations with more than one unrelated trade or business to calculate UBI separately for each trade or business (the “silo rule”). Before this change, organizations could offset UBI from a profitable activity with losses from an unprofitable activity, netting the two and owing tax only on the combined net. Under the silo rule, each activity stands on its own.

If an organization operates a profitable parking lot (UBI of $50,000) and an unprofitable gift shop (loss of $30,000), it cannot net the two. It owes tax on $50,000 of UBI from the parking lot, and the $30,000 loss from the gift shop can only offset future income from the gift shop (carried forward under the normal net operating loss rules for that silo).

The IRS issued final regulations (T.D. 9933, January 2021) providing guidance on how to identify separate trades or businesses. The primary method is the NAICS (North American Industry Classification System) code: each activity is classified by its NAICS code, and activities with different codes are treated as separate silos. Activities with the same code may be combined.

The silo rule requires more detailed record-keeping: the organization must track revenue, expenses, and net income for each unrelated trade or business separately. The allocation of shared expenses (rent, utilities, administrative costs) between activities requires a reasonable method, and the IRS will scrutinize allocations that shift costs from profitable activities to loss activities.

How is UBI taxed?

UBI is taxed at the regular corporate rate (21%) for organizations taxed as corporations (most 501(c)(3) and 501(c)(6) organizations). Organizations taxed as trusts (certain 501(c)(3) organizations organized as trusts, some pension trusts) pay tax at the trust income tax rates (which reach 37% at just $15,200 of taxable income for 2026).

The organization receives a $1,000 specific deduction under IRC 512(b)(12), which reduces the taxable UBI by $1,000. This is a flat deduction, not a threshold: an organization with $5,000 of net UBI pays tax on $4,000.

Deductions against UBI include the direct expenses of the unrelated business (cost of goods sold, direct labor, supplies, depreciation on assets used in the activity) and a reasonable allocation of overhead expenses (rent, utilities, administrative costs) to the extent they are attributable to the unrelated business. The allocation must be based on a reasonable method (square footage, time spent, revenue generated) and must be applied consistently.

Net operating losses from a silo carry forward under the normal NOL rules (indefinite carryforward, limited to 80% of taxable income from that silo in any future year under the post-TCJA rules). Pre-TCJA NOLs may have different carryback and carryforward periods depending on when they were generated.

Estimated tax payments are required if the organization expects to owe $500 or more in UBIT for the year (IRC 6655 for corporate-taxed entities, IRC 6654 for trust-taxed entities). The estimated payments follow the same quarterly schedule as corporate or individual estimated taxes.

When does debt-financed property create UBIT?

Under IRC 514, income from “debt-financed property” is UBI to the extent of the debt. Debt-financed property is any property held to produce income (rental property, for example) on which there is acquisition indebtedness (a mortgage or other borrowing used to acquire or improve the property).

The calculation: the percentage of income treated as UBI equals the average acquisition indebtedness divided by the average adjusted basis of the property during the year. If a nonprofit owns a rental building with a $600,000 mortgage and an adjusted basis of $1,000,000, the debt-to-basis ratio is 60%, and 60% of the net rental income is UBI.

The debt-financed income rule has an important exception for property used for the organization’s exempt purpose. If more than 85% of the use of the property is for the organization’s exempt function, none of the income is debt-financed. If between 85% and 100% of the use is exempt, the debt-financed income rules do not apply to the exempt-use portion.

The “neighborhood land rule” under IRC 514(b)(3) provides a temporary exemption for land acquired for future exempt use: if the organization intends to use the land for its exempt purpose within 10 years (or within a period approved by the IRS), income from the land during the holding period is not treated as debt-financed income.

What should I do next?

If your nonprofit has revenue-generating activities beyond its core exempt function, the first step is to classify each activity as related or unrelated. For each unrelated activity, determine whether an exclusion applies (volunteer-staffed, donated merchandise, passive income, convenience). For the remaining UBI, set up separate tracking by activity (the silo rule requires it). If gross UBI from all activities exceeds $1,000, file Form 990-T and make estimated tax payments if the liability exceeds $500.

• Nonprofit Form 990 filing guide, the annual information return filed alongside Form 990-T
• Church bookkeeping and fund accounting, the 990-T filing obligation for churches with UBI (churches are exempt from 990 but not from 990-T)
• Nonprofit grant management, restricted fund tracking and compliance reporting for grant-funded programs
• Self-directed IRA real estate: UBIT and UDFI, the parallel UBIT and debt-financed income rules for tax-exempt retirement accounts
• IRS accuracy-related penalty, reasonable cause defense for any UBIT-related understatement
• Restaurant bookkeeping, the operational bookkeeping parallel for organizations that operate food service activities

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