What is unrelated business income (UBTI) and when does a nonprofit have to file Form 990-T?

Unrelated business taxable income is income a nonprofit earns from a trade or business that is regularly carried on and not substantially related to the organization’s tax-exempt purpose. All three of those conditions have to be met for income to qualify as UBTI.

“Trade or business” means selling goods or services. “Regularly carried on” means the activity happens with a frequency and continuity comparable to how a for-profit business would operate. A one-time fundraiser auction typically doesn’t count, but a year-round gift shop does. “Not substantially related” means the activity doesn’t contribute meaningfully to the organization’s exempt mission beyond just generating money.

Common examples include a church renting its parking lot to weekday commuters, a charity selling branded merchandise that has no connection to its educational programs, or a nonprofit running a commercial café open to the general public. In each case the organization is operating something that looks like a regular business and isn’t directly tied to why the IRS granted it tax-exempt status.

Certain types of income are specifically excluded from UBTI even when they would otherwise qualify. Investment income like dividends, interest, and most capital gains is generally excluded. Rental income from real property is excluded in most situations. Revenue from activities staffed entirely by volunteers is also excluded. These carve-outs matter because many nonprofits assume all non-donation revenue is taxable when it may not be.

A nonprofit must file Form 990-T when gross unrelated business income reaches $1,000 or more in a tax year. That threshold is based on gross income, not net. Even if expenses completely offset the profit, the filing obligation is triggered by the gross number. The form is due on the 15th day of the 5th month after the organization’s fiscal year ends, which means May 15 for calendar-year filers.

The bookkeeping side of UBTI is where many organizations fall short. Unrelated business revenue and the expenses directly connected to it need to be tracked in separate accounts from mission-related activity. Expenses allocated against unrelated income on the return can reduce or eliminate the tax owed, but only if your books actually support the allocation. When everything is lumped into one general revenue account, filing an accurate 990-T becomes guesswork and defending those numbers under audit becomes nearly impossible.

If your nonprofit generates any revenue outside its core mission, set up dedicated income and expense accounts for those activities from day one. Review them quarterly to confirm transactions are coded correctly. Our nonprofit tax return services include Form 990-T preparation, and the process is dramatically smoother when the books are already organized to support it. This kind of upfront structure is exactly what Northern Virginia nonprofit bookkeeping services should provide, because catching the problem at filing time means you’re already behind.