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Publication 598

Tax on Unrelated Business Income of Exempt Organizations


Future Developments(p1)

The IRS has created a page on for information about Pub. 598, at Information about any future developments affecting Pub. 598 (such as legislation enacted after we release it) will be posted on that page.

What's New(p1)



An exempt organization isn’t taxed on its income from an activity substantially related to the charitable, educational, or other purpose that is the basis for the organization's exemption. Such income is exempt even if the activity is a trade or business.
However, if an exempt organization regularly carries on a trade or business not substantially related to its exempt purpose, except that it provides funds to carry out that purpose, the organization is subject to tax on its income from that unrelated trade or business.
This publication covers the rules for the tax on unrelated business income of exempt organizations. It explains:
  1. Which organizations are subject to the tax (chapter 1),
  2. What the requirements are for filing a tax return (chapter 2),
  3. What an unrelated trade or business is (chapter 3), and
  4. How to figure unrelated business taxable income (chapter 4).
All section references in this publication are to the Internal Revenue Code.


Useful items

You may want to see:

 557  Tax-Exempt Status for Your Organization
Form (and Instructions)
 990-T : Exempt Organization Business Income Tax Return
See chapter 5 for information about getting these publications and forms.

Comments and suggestions. (p2)

We welcome your comments about this publication and your suggestions for future editions.
You can send your comments from Click on "More Information" and then on "Give us feedback." Or you can write to:

Internal Revenue Service
Tax Forms and Publications
1111 Constitution Ave. NW, IR-6526
Washington, DC 20224

We respond to many letters by telephone. Therefore, it would be helpful if you would include your daytime phone number, including the area code, in your correspondence.
Although we can’t respond individually to each comment received, we do appreciate your feedback and will consider your comments as we revise our tax products.