There are some activities that the IRS has ruled will not be subject to the unrelated business income tax: activities in which almost all the work is handled by volunteers. activities engaged ...
The unrelated business income tax (UBIT) applies to all organizations exempt from tax under section 501(a) except certain U.S. instrumentalities. State and municipal colleges and universities are also ...
Sponsorship prop. regs. may increase UBIT liability.(IRS regulations; unrelated business income tax) : An article from: The Tax Adviser, William H. Hall, Travis L.