UBIT: When Your Nonprofit Actually Owes Tax on Revenue
TL;DR
Unrelated business income tax applies when a tax exempt organisation runs a trade or business, regularly, that is not substantially related to its exempt purpose. The rate is a flat 21 percent on net income, and the filing trigger is $1,000 of gross unrelated income rather than $1,000 of profit, which catches organisations out every year. The most misunderstood point is that spending the money on your mission does not protect it. The activity that generated the income is what determines the tax, not what you did with the proceeds afterwards. Since 2018 the silo rule under Section 512(a)(6) has also prevented losses in one unrelated activity from offsetting gains in another, so a gift shop making $50,000 and a car park losing $20,000 no longer net to $30,000. This guide covers the three part test, the exclusions worth knowing, and the places Delaware nonprofits most often cross the line without noticing.
KEY TAKEAWAYS
- Unrelated business income tax is charged at a flat 21 percent on net income, after directly connected expenses and a $1,000 specific deduction.
- Form 990-T must be filed once gross unrelated income reaches $1,000. That is a gross receipts trigger, not a profit trigger.
- The three part test asks whether the activity is a trade or business, regularly carried on, and not substantially related to your exempt purpose. All three must be true.
- Using the income for mission purposes does not shield it. The activity generating the income is what triggers the tax.
- The silo rule under Section 512(a)(6) prevents losses from one unrelated activity offsetting income from another. Group activities by the first two digits of the NAICS code.
- Sponsorship becomes taxable advertising the moment you promote a product, list prices or include a call to action rather than simply acknowledging a supporter.
- Rental income loses its exclusion if you provide substantial services or the property is debt financed.
What Is Unrelated Business Income Tax?
Unrelated business income tax, usually shortened to UBIT, is the federal tax charged on income a tax exempt organisation earns from activities outside its exempt purpose. It exists so that nonprofits running commercial operations do not hold an unfair advantage over taxable businesses doing the same thing.
The rate is a flat 21 percent, matching the corporate rate, and it applies to net income rather than gross. You may deduct expenses that are ordinary, necessary and directly connected to the unrelated activity, including staff time, supplies, a fair share of rent and utilities, and depreciation on equipment used in it. Exempt trusts subject to the tax are charged at trust rates rather than 21 percent.
Incurring UBIT is not in itself a failure. Plenty of well run nonprofits pay it every year on a deliberate revenue stream. The failures are not knowing you owe it, not filing, and building a programme around an exclusion that turns out not to apply.
FAST FACT
Form 990-T must be filed once gross unrelated business income reaches $1,000 in a tax year. This is a gross receipts trigger, not a net profit trigger, so a filing obligation can exist even where no tax is due.
Source: IRS Form 990-T instructions, via 2026 nonprofit tax guidance
How Do You Know If Income Is Unrelated?
Section 512(a) sets a three part test. All three conditions must be met before income is treated as unrelated. If any one fails, the income is not subject to the tax.
Is it a trade or business? Broadly, an activity carried on for the production of income from selling goods or performing services. Most revenue generating activity qualifies here, so this condition rarely rules anything out on its own.
Is it regularly carried on? The test compares frequency and continuity to how a commercial business would operate. An annual gala is not regularly carried on. A gift shop open six days a week is. This is where many one off fundraising activities fall outside the tax entirely.
Is it substantially related to your exempt purpose? The activity must contribute importantly to accomplishing the exempt purpose, and specifically not merely through producing money to fund it. This is the condition organisations most often misread, and it deserves its own section.
Why Does Spending the Money on Your Mission Not Help?
Because the test looks at the activity, not the destination of the proceeds.
A youth charity that runs a commercial print shop and puts every dollar of profit into its programmes has not made the print shop related. The printing does not itself advance the charitable purpose. It produces money that does, which the statute explicitly excludes as a basis for relatedness.
Contrast that with a museum shop selling reproductions of works in its collection. Selling those items arguably furthers the educational purpose directly, because the objects themselves carry the mission. The same shop selling unrelated homeware alongside them is running two activities, and only one of them is related.
The practical consequence is that you cannot reason from intent. Asking what the money funds is the wrong question. Ask what the activity does, and whether that thing, on its own, advances the exempt purpose.
Which Exclusions Actually Apply?
Several activities are excluded by statute even where the three part test is met. These are worth knowing precisely, because a misapplied exclusion is more dangerous than no exclusion at all.
Volunteer labour. An activity where substantially all the work is performed by uncompensated personnel is excluded. Substantially all is generally read as around 85 percent, and it is measured by work performed rather than by headcount.
Convenience of members. Activities carried on for the convenience of members, students, patients, officers or employees. Note that this covers your own community, not the general public. A hospital cafeteria serving staff and patients is treated differently from one primarily serving passers by.
Donated merchandise. Selling goods that were substantially all received as gifts or contributions. This is what keeps most thrift shop revenue outside the tax.
Qualified sponsorship payments. Payments where the sponsor receives no substantial return benefit beyond acknowledgment of their name, logo or product lines. This is the most valuable exclusion for most nonprofits and the easiest to lose, which is why it has its own section below.
Passive income. Dividends, interest and royalties are generally excluded under the Section 512(b) modifications, as is convention and trade show income for organisations whose exempt purpose includes holding them.
If you are relying on an exclusion to keep a meaningful revenue stream outside the tax, get that position confirmed in writing before you build the programme around it, not after.
FAST FACT
The unrelated business income tax rate is a flat 21 percent on net income. Organisations expecting $500 or more in liability must make quarterly estimated tax payments.
Source: Nonprofit UBIT guidance, 2026
Where Is the Line Between Sponsorship and Advertising?
This is the single most common place Delaware nonprofits cross into taxable territory, usually without intending to and often in a gala programme or an email footer.
A qualified sponsorship payment is one where the sponsor gets acknowledgment and nothing substantially more. Displaying the sponsor name, logo, general contact details, a value neutral description of their products, or listing their product lines is all acknowledgment. It stays outside the tax.
It becomes advertising, and therefore taxable, when the message does any of the following: promotes the quality or merits of a product, lists prices or indicates savings, includes a call to action such as visit or buy, or contains comparative or qualitative language endorsing what the sponsor sells.
The distinction is not about how much money changed hands or how the two parties described the arrangement. A written sponsorship agreement does not make the treatment sponsorship if the actual message reads as an advertisement. The wording controls.
A practical test worth applying. Read the acknowledgment aloud and ask whether a listener would understand it as thanks or as a pitch. Thank you to Wilmington Motors, proud supporter of our annual programme, is acknowledgment. Wilmington Motors, best prices in Delaware, visit us this weekend, is advertising.
What Is the Silo Rule and Who Does It Affect?
The Tax Cuts and Jobs Act added Section 512(a)(6), which changed how organisations with more than one unrelated activity calculate what they owe. It applies from 2018 onward and remains in force.
Before the change, a nonprofit could net its unrelated activities against each other. A gift shop making $50,000 and a public car park losing $20,000 produced $30,000 of taxable income. After the change, each unrelated trade or business is calculated separately, informally called siloing. The gift shop is taxed on $50,000. The car park loss stays in its own silo and cannot reduce it.
Final regulations issued in December 2020 established that organisations group activities by the first two digits of the North American Industry Classification System code. Activities sharing the first two digits sit in the same silo and can offset each other. Activities in different two digit groups cannot.
Net operating losses generated after 2017 remain locked to the silo that produced them and can offset only 80 percent of that silo future income. Losses carried forward from before 2018 sit outside the silo structure and are deducted against total UBTI before silo specific losses apply.
For organisations with two or more unrelated activities, this makes expense allocation considerably more consequential than it used to be. Direct expenses attach to their activity. Indirect expenses such as overhead and shared staff time must be allocated on a reasonable and consistently applied basis, whether by square footage, headcount or timesheet. Getting that allocation right is ordinary bookkeeping work, and it is where our nonprofit accounting team spends a good deal of time.
How Much Unrelated Income Is Too Much?
There is no statutory percentage cap, and anyone who quotes you one is repeating a myth.
What exists instead is a qualitative test. If unrelated activity grows to the point where it, rather than the exempt purpose, looks like the organisation primary activity, exempt status itself comes into question. The Internal Revenue Service assesses the overall picture rather than applying a formula, which means patterns and trajectory matter more than any single year percentage.
The practical guidance is straightforward. Track unrelated revenue as a share of total gross revenue each year and watch the trend rather than the level. An organisation where it has grown from 4 percent to 18 percent across three years should be having a structured conversation with its accountant about whether a separate taxable subsidiary is the right structure, well before anyone at the Internal Revenue Service asks.
FAST FACT
Section 512(b)(12) provides a flat $1,000 specific deduction against gross unrelated business income when computing UBTI. See IRS Publication 598 for the full conditions on each exclusion.
Source: IRS Publication 598, via 2026 nonprofit tax guidance
What Should a Nonprofit Do Each Year?
An annual review, built into the close process rather than left to the tax preparer, catches almost everything.
- Inventory every revenue stream for the year, not only the material ones. The $1,000 trigger is low enough that small streams matter.
- Apply the three part test to each. Trade or business, regularly carried on, substantially related.
- Check the exclusions for anything that looks unrelated. Volunteer labour, convenience, donated merchandise, qualified sponsorship, and the Section 512(b) modifications.
- Read your sponsorship acknowledgments as published. Not as drafted, not as agreed, as they actually appeared in the programme or on the website.
- Allocate by silo if you have more than one unrelated activity, grouping by the first two digits of the NAICS code.
- Track expenses by activity throughout the year. Reconstructing allocations in March for the previous calendar year produces weaker positions and larger bills.
- File on time. A return with no tax due must still be filed if gross unrelated income reached $1,000.
One further point on disclosure. Form 990-T is subject to public inspection in the same way as Form 990, so how you present unrelated activity is visible to funders and board members. That is a reason to get the treatment right rather than a reason to avoid the activity, and it belongs alongside the other filings in your Delaware nonprofit compliance calendar.
Summary
Unrelated business income tax applies at a flat 21 percent when a tax exempt organisation runs a trade or business, regularly, that is not substantially related to its exempt purpose. All three conditions must hold. The filing trigger is $1,000 of gross unrelated income rather than profit, so a Form 990-T obligation can exist in a year with no tax due. The most costly misunderstanding is assuming that spending the proceeds on the mission protects the income. It does not. The activity is what determines the treatment.
Two areas produce most of the exposure. Sponsorship becomes taxable advertising the moment an acknowledgment promotes a product, quotes a price or includes a call to action, and the published wording controls regardless of what the agreement says. And since 2018 the silo rule has prevented losses in one unrelated activity offsetting income from another, which makes expense allocation across activities considerably more consequential. Run the inventory and the three part test once a year as part of your close, and confirm any exclusion you are relying on in writing before you build a programme on it.
Not sure whether a revenue stream crosses the line? The review takes an afternoon and is considerably cheaper than discovering the answer on examination. Talk to Breakwater about your revenue mix, see how we handle grant tracking and reporting, or read our guide to single audit requirements if you also receive federal funding.
Frequently asked questions
It is federal tax charged at 21 percent on income a tax exempt organisation earns from commercial activity that has nothing directly to do with its exempt purpose. The point is to prevent nonprofits holding a tax advantage over ordinary businesses doing the same work. It applies to net income after directly connected expenses and a $1,000 specific deduction, and a filing is required once gross unrelated income reaches $1,000.
Usually not, because rental income from real property is generally excluded. Two things break that exclusion. Providing substantial services to tenants beyond ordinary building maintenance, such as catering, cleaning of tenant space or event staffing, converts the arrangement into a service business. And if the property is debt financed, a proportion of the income becomes taxable regardless of services. Nonprofits with a mortgage on a partly rented building should have this reviewed specifically.
Almost certainly not, because a once yearly event fails the regularly carried on test. Frequency and continuity are compared to how a commercial business operates, and an annual event does not meet that standard. Elements within the gala can still create exposure, particularly advertising sold in a printed programme, which is evaluated on its own rather than as part of the event.
It depends entirely on what the slogan says. A name, logo, established slogan that is purely identifying, location and contact details are all acknowledgment. Anything comparative or qualitative about their product, any price or savings claim, or any call to action tips the payment into advertising and makes it taxable. The safest approach is to control the wording yourself rather than accepting supplied copy, because the published words determine the treatment.
Generally no. Dividends, interest and royalties are excluded under the Section 512(b) modifications. The main exception is debt financed investment income, where borrowing was used to acquire the asset producing the return. Organisations using a line of credit or margin arrangement alongside an investment portfolio should confirm the position rather than assuming the general exclusion applies.
Late filing and late payment penalties apply, calculated on the tax due, plus interest. The larger risk is pattern rather than penalty. Repeated failure to report unrelated activity, particularly where it is growing, contributes to a picture that can put exempt status in question. If you believe a prior year should have been reported, raise it with your accountant. Voluntary correction is treated considerably better than discovery on examination.
Sometimes, and the trigger is usually scale rather than tax. A taxable subsidiary can make sense when unrelated activity is growing toward a level that raises questions about the organisation primary purpose, when the activity carries liability you want ring fenced, or when outside investment is involved. It also adds a corporate return, separate governance and intercompany accounting. Below a meaningful revenue level the administrative cost usually exceeds the benefit.