Will earning income from an unrelated side activity trigger UBTI and put my nonprofit’s tax-exempt status at risk?

< Back to Q&A

Nonprofits increasingly look beyond donations and grants to generate revenue, but some activities can create unexpected federal income tax obligations. Advertising, merchandise sales, rental income, and commercial partnerships may generate Unrelated Business Taxable Income (UBTI), even when the profits support a charitable mission. Understanding the IRS rules can help organizations pursue additional revenue while protecting their nonprofit tax exempt status.

What UBTI Is and How the IRS Defines an Unrelated Business Activity

The IRS generally identifies UBTI through three conditions:

• an activity constitutes a trade or business,
• operates regularly,
• and is not substantially related to the organization’s exempt purpose.

Under Internal Revenue Code Sections 511–513, Unrelated Business Taxable Income represents taxable income from qualifying activities after allowable deductions. Operating a commercial venture to fund charitable programs does not automatically make that venture mission-related.

For example, a nonprofit educational organization selling unrelated consumer products year-round may generate taxable income despite directing every dollar toward scholarships.

Earning unrelated business income does not automatically jeopardize an organization’s tax-exempt status. However, an organization’s exemption can be at risk if its unrelated commercial activities become substantial in relation to its exempt activities or otherwise indicate that it is no longer operated primarily for its exempt purpose.

Which Side Activities Most Commonly Generate UBTI for Nonprofits

Revenue diversification creates opportunities, but certain activities frequently trigger unrelated business income tax.

Common examples include paid advertising in newsletters, websites, and publications; retail sales of merchandise unrelated to the organization’s mission; commercially operated parking facilities; and fee-based services offered primarily to outside customers.

Rental income also warrants examination. Although qualifying rents from real property are generally excluded from UBTI, substantial services provided to tenants can affect the exclusion. Income from debt-financed property may also be treated as unrelated debt-financed income.

Partnership investments may generate taxable pass-through business income, including income attributable to leveraged investments.

Sponsorship agreements require particular attention. Acknowledging a sponsor generally differs from promoting its products, prices, or services.

Ultimately, the nature and operation of the activity, together with the applicable UBTI exclusions and exceptions, determine its tax treatment.

What Activities Are Specifically Exempt From UBTI

Federal tax law provides several exceptions that allow nonprofits to generate revenue without triggering unrelated business income tax.

Under Section 513(a), qualifying activities performed substantially by unpaid volunteers are excluded. Sales of substantially donated merchandise, including qualifying thrift store operations, also receive favorable treatment. Certain activities conducted primarily for members’, students’, patients’, or employees’ convenience qualify.

Other exclusions cover qualifying bingo games, dividends, interest, royalties, certain research income, real property rents, and investment gains.

Exceptions have limitations. Debt financing, substantial services, or compensation arrangements may change otherwise favorable treatment.

These distinctions also matter in Nonprofit vs For-Profit Accounting, particularly when identifying revenue classifications and documenting exempt activities for financial reporting.

How a Nonprofit Calculates and Pays the UBTI It Owes

Nonprofits calculate taxable unrelated business income by subtracting directly connected, allowable expenses from qualifying gross business income.

Deductible expenses may include employee compensation, supplies, depreciation, and reasonably allocated overhead.

Under Section 512(a)(6), organizations generally calculate income separately for each unrelated business, preventing current losses from one activity from offsetting another’s profits.

For 2026 planning, tax-exempt corporations generally face a 21% federal tax rate on taxable unrelated business income.

Organizations with at least $1,000 in gross unrelated business income generally must file Form 990-T. A calendar-year organization’s 2026 return is generally due May 17, 2027, because May 15 falls on Saturday.

How Nonprofits Can Structure Side Activities to Reduce UBTI Exposure

Effective nonprofit compliance begins before launching revenue-generating activities.

Organizations should evaluate whether proposed ventures meaningfully advance their exempt purposes and document that relationship. When appropriate, restructuring activities around educational, charitable, or other qualifying functions may support favorable tax treatment.

Larger commercial ventures may warrant separate taxable subsidiaries, allowing the nonprofit to distinguish charitable operations from unrelated businesses. However, subsidiaries introduce additional administrative responsibilities, and related-party transactions require careful scrutiny.

Nonprofits should also evaluate sponsorship agreements, debt-financed investments, and expense allocation methods.

How BT Can Help

For more than four decades, Bennett Thrasher has provided businesses and individuals with strategic business guidance and solutions through professional tax, audit, advisory, and business process outsourcing services. Contact Bennett Thrasher’s nonprofit accounting practice, or call us at 770.396.2200.

Back to Q&A