Unrelated Business Income for Nonprofits: What It Is and When It Applies

Most nonprofit founders assume that tax-exempt status means all income is tax-free. That is mostly true, but not entirely. The IRS allows nonprofits to earn income in many ways without triggering taxes, including grants, donations, membership dues, and revenue from programs directly tied to their mission. When a nonprofit earns income from activities that fall outside that mission, however, a different set of rules applies.

This distinction matters, especially as nonprofits grow and look for ways to sustain themselves financially. Understanding where the line is, and how to stay on the right side of it, is a core part of nonprofit compliance.

What Is Unrelated Business Income?

Quick Answer

Unrelated business income (UBI) is money a nonprofit earns from a trade or business activity that is regularly carried on and not substantially related to the organization's tax-exempt purpose. If that income meets the IRS's three-part test, it is subject to unrelated business income tax (UBIT), even for 501(c)(3) organizations.

How the IRS Defines Unrelated Business Income

The IRS applies a three-part test to determine whether income qualifies as unrelated business income. All three conditions must be met for income to be taxable.

1. It must come from a trade or business. The activity must involve selling goods or services for profit. General fundraising or passive income typically does not meet this standard.

2. It must be regularly carried on. An annual bake sale is not the same as operating a weekly retail shop. The IRS looks at how frequently and consistently the activity occurs. A one-time event rarely qualifies.

3. It must not be substantially related to the organization's exempt purpose. This is the key question. If the activity directly advances your nonprofit's mission, the income is likely exempt. If it does not, it may be taxable. The fact that a nonprofit uses the money for charitable purposes does not make the underlying activity exempt.

For a clear explanation of how tax-exempt status works more broadly, including what kinds of income are and are not taxable, the Do Nonprofits Pay Taxes? overview is a helpful starting point.

Common Examples of UBI in Nonprofits

Not every revenue-generating activity creates a tax problem. The IRS also recognizes several important exceptions, which are covered below. First, here are some examples of activities that commonly raise UBI questions.

A nonprofit hospital that operates a gift shop selling items to the general public may generate UBI if the shop's inventory is not tied to patient care or the hospital's charitable mission. An environmental organization that rents out its office space to an unrelated business on a regular basis could face similar scrutiny. A professional association that sells advertising in its member newsletter may owe UBIT on that advertising revenue, since selling ads is not substantially related to its educational mission, even if the newsletter itself is.

By contrast, a food bank that charges a small handling fee to partner agencies for food distribution would likely not face UBI treatment, because that activity is directly related to its charitable purpose.

These examples illustrate why context matters so much. The same type of activity can be taxable for one organization and not for another, depending on how the activity connects to the organization's mission.

Key Exceptions: What UBI Is Not

The IRS carves out several categories of income that are excluded from UBIT even if they appear to come from business activity.

Volunteer labor exception. If an activity is carried out almost entirely by unpaid volunteers, the income is generally not subject to UBIT. Thrift stores operated by volunteers are a common example.

Donated goods exception. Income from selling donated goods, such as items received through donation drives, is typically excluded.

Convenience exception. Services provided primarily for the convenience of members, students, patients, or employees of the organization are usually exempt. A cafeteria run for a nonprofit's staff, for instance, would fall under this exception.

Passive income. Dividends, interest, royalties, and certain rental income are generally excluded from UBIT, as long as the income is truly passive and does not involve active business operations. There are nuances here, particularly with debt-financed property, so it is worth reviewing IRS Publication 598 for specifics.

Understanding these exceptions can help a nonprofit structure its revenue streams in a way that minimizes tax exposure while still supporting its operations.

When UBI Becomes a Problem: Tax Exposure and Compliance Risks

If your nonprofit does have unrelated business income, it is subject to the same federal corporate tax rates that apply to for-profit businesses. As of 2024, that is a flat 21% under current federal law. The IRS requires nonprofits with $1,000 or more in gross UBI to file Form 990-T, Exempt Organization Business Income Tax Return, each year.

This is separate from your regular annual information return. Nonprofits that file Form 990 or 990-EZ still need to file 990-T separately if they meet the UBI threshold. Understanding your IRS Form 990 filing requirements is important context here, since both filings are part of your annual compliance picture.

Beyond the tax liability itself, excessive reliance on unrelated business income can create broader concerns. The IRS monitors whether a nonprofit's unrelated activities have become so significant that they undermine the organization's charitable purpose. If unrelated business activities start to dominate, the organization's tax-exempt status could be at risk. This is one of the more common, and often overlooked, reasons nonprofits lose tax-exempt status.

How to Track and Report UBI Correctly

Good recordkeeping is essential if your nonprofit earns any income that might qualify as UBI. You need to be able to show the IRS that you have correctly categorized your income and calculated any taxes owed.

Practically, this means keeping separate accounts or ledgers for activities that may generate UBI, tracking direct expenses related to those activities (which can offset taxable income), and working with an accountant or bookkeeper familiar with nonprofit tax rules. Solid nonprofit recordkeeping practices make this process significantly more manageable and protect you if questions arise during an audit.

Each unrelated trade or business must also be reported separately on Form 990-T. The IRS does not allow nonprofits to net losses from one unrelated business against income from another, a rule that was clarified in the Tax Cuts and Jobs Act of 2017 and confirmed in subsequent IRS guidance on UBIT.

Final Thoughts

Unrelated business income is one of those areas where a little awareness goes a long way. Most small nonprofits will never face a UBIT issue, especially in their early years. But as your organization grows and explores new revenue streams, understanding how the IRS defines and taxes UBI helps you make informed decisions before income becomes a liability.

If you are still in the process of building your foundation, reviewing how to form a nonprofit organization in 8 steps gives you a clear picture of the full formation process and what comes after. And when compliance questions come up along the way, including ones like this, Beacon is here to help you move forward with clarity.