Form 990-T Filing Requirements for Exempt Organizations

Form 990-T filing requirements kick in when a tax-exempt organization, trust, IRA, or similar account earns $1,000 or more in gross income from a trade or business unrelated to its exempt purpose. The return reports that income and pays the unrelated business income tax (UBIT) owed on it. Filing is electronic, deadlines split between corporate-type and trust-type filers, and the tax applies even when the underlying entity is otherwise tax-free.¹

Who Has to File

Any organization exempt under Section 501(a), along with certain trusts and accounts, must file Form 990-T once gross income from an unrelated trade or business reaches $1,000 in a tax year.¹ The threshold is gross income, not net, so deductions do not keep you under it.

That threshold applies separately to each account. If you own three traditional IRAs, the IRS treats each as its own trust for UBIT purposes, and each one that reaches $1,000 in gross unrelated business income needs its own Employer Identification Number and its own return.²

The pool of filers is wider than the word “nonprofit” suggests. It covers charities, social welfare organizations, trade associations, state colleges and universities, Section 529 tuition programs, Coverdell education savings accounts, health savings accounts, Archer MSAs, and every type of IRA (traditional, Roth, SEP, and SIMPLE).²

What Counts as Unrelated Business Income

Income is unrelated business income when three conditions are all present: the activity is a trade or business, it is regularly carried on, and it is not substantially related to the organization’s exempt purpose.¹ A one-off fundraiser typically fails the “regularly carried on” test. A hospital gift shop may pass the “substantially related” test because it supports patient care. A university running a year-round commercial laundry for outside clients hits all three.

The test looks at whether the activity contributes importantly to the exempt function, not whether the profits fund a good cause. Sending the money back to charitable programs does not exempt the income.³

Debt-Financed Property

Section 514 treats income from property bought with borrowed money as unrelated business income in proportion to the outstanding debt, even when the property would otherwise produce passive investment income.⁴ The formula divides average acquisition indebtedness by the property’s average adjusted basis, then multiplies by gross income from that property. As debt is paid down, the taxable share shrinks.

This rule surprises many IRA owners. When an IRA takes a non-recourse loan to buy rental real estate, the rental income and any gain on sale are partially taxable through this formula. Margin-based positions inside a retirement account can trigger the same result.

Master Limited Partnerships in Retirement Accounts

Master limited partnerships pass income through to unitholders without paying corporate-level tax. When an IRA holds MLP units directly, that distributed income flows into the account as unrelated business taxable income. Cross the $1,000 threshold and the IRA owes tax, which cuts into the tax-deferred or tax-free treatment the account normally offers.¹

Exceptions That Keep Income Out

Three statutory carve-outs remove a lot of common commercial activity from UBIT.

Volunteer labor. If substantially all the work of running the trade or business is done by unpaid volunteers, the income is not taxable. The IRS compares volunteer to compensated hours on a facts-and-circumstances basis, and courts have found that even about 23% of the work performed by paid staff can disqualify the exception.⁵
Convenience of members. For 501(c)(3) organizations, a business carried on primarily for the convenience of members, students, patients, officers, or employees is excluded. A campus cafeteria serving students is the standard example.³
Donated merchandise. Selling goods that were substantially all received as gifts or contributions does not count as an unrelated business, which is what allows thrift stores to operate tax-free.³

Section 512(b) also excludes several categories of passive income, including dividends, interest, royalties, and most rents from real property, provided the property is not debt-financed.⁶

How the Tax Is Calculated

The rate depends on how the filer is structured. Most exempt organizations pay the flat 21% corporate rate on their unrelated business taxable income.⁷ Trusts, including IRAs and qualified pension plans, use the compressed trust brackets. For 2026, those brackets reach 37% on income above just $16,000, so an IRA with $20,000 of unrelated business taxable income hits the top individual rate while a corporation on the same income would owe 21%.⁸

The $1,000 Specific Deduction

Every filer gets a $1,000 specific deduction under Section 512(b)(12), applied automatically. Religious organizations receive an additional $1,000 deduction for each local unit (parish, individual church, or district) that carries on its own unrelated trade or business.⁹ For a filer right at the gross-income threshold, this deduction can wipe out the tax owed. The return still has to be filed.

Deductions for Expenses

Only expenses directly connected to the unrelated activity are deductible. If a building is used 30% for commercial activity and 70% for exempt purposes, only 30% of the rent, utilities, and maintenance can be deducted against the unrelated income. The same allocation applies to wages when staff split time between exempt and commercial work.⁶ Weak allocation is where audits focus. If you deduct 50% of a salary, keep the time records that support the number.

Separate Calculation for Each Business

When an organization runs more than one unrelated trade or business, it must calculate income and deductions for each one on its own. A loss from one cannot offset a gain from another. This siloing rule under Section 512(a)(6), added by the Tax Cuts and Jobs Act, stops filers from using a money-losing venture to shelter profits from a separate commercial operation.¹⁰ Each separate business gets its own Schedule A attached to Form 990-T.

Deadlines, Extensions, and Late Penalties

Most exempt organizations taxed as corporations file by the 15th day of the 5th month after the tax year ends. For a calendar-year nonprofit, that is May 15.¹¹

Retirement accounts run on a different clock. IRAs (Section 408(a) trusts) and qualified pension plans (Section 401(a) trusts) file by the 15th day of the 4th month, which is April 15 for calendar-year filers. Other trusts file by May 15.¹² The earlier deadline catches IRA owners off guard because it lines up with the personal income tax deadline rather than the nonprofit filing season.

Form 8868 gives an automatic six-month extension of time to file.¹³ It does not extend the time to pay. Any tax owed is still due by the original deadline.

Filing late without reasonable cause triggers a penalty of 5% of the unpaid tax per month or partial month, capped at 25%.¹⁴ A separate failure-to-pay penalty of 0.5% per month can stack on when tax remains unpaid. In months both apply, the failure-to-file penalty is reduced to 4.5%, keeping the combined monthly hit at 5%.

Estimated Tax Payments

If you expect to owe $500 or more in UBIT for the year, quarterly estimated tax payments are required.¹⁵ Calendar-year filers pay on April 15, June 15, September 15, and January 15 of the following year.¹⁶

Missing installments can trigger an underpayment penalty under Section 6655. You can generally avoid it by paying at least the smaller of the current year’s total tax liability or 100% of last year’s tax, spread across the four installments.² Form 990-W is the worksheet for figuring each installment. It is not filed with the IRS.

How to File and Pay

The Taxpayer First Act requires Form 990-T to be filed electronically for tax years ending December 2020 and later.¹⁷ Nearly every filer must use IRS-approved software or a tax professional who can transmit electronically. Paper filing is no longer available for almost anyone.

Payment options are broader than filers often realize. You can pay through the Electronic Federal Tax Payment System, IRS Direct Pay, an IRS Online Account, ACH credit through a financial institution, or same-day wire transfer.¹⁸ Keep the confirmation number as proof of timely payment.

Records to Have Ready

A clean return depends on records sorted by each separate unrelated trade or business. At a minimum, gather the Employer Identification Number, ledgers of gross income broken out by activity, invoices and receipts for deductible expenses, depreciation schedules for assets used in the commercial activity, and documentation showing how shared costs were allocated between exempt and commercial use. For debt-financed property, pull loan statements showing outstanding principal on the first day of each month the property was held, since the UBIT calculation depends on averaging that indebtedness across the year.

Public Inspection for 501(c)(3) Charities

Charities organized under Section 501(c)(3) face a disclosure rule other exempt organizations do not: their Form 990-T must be made available for public inspection.¹⁹ The requirement applies to returns filed after August 17, 2006, and follows the same inspection and copying rules that govern Form 990. Trade associations, social welfare groups, and other exempt organizations are not subject to public inspection for their 990-T filings. Charities weighing whether to run a commercial side venture should factor this disclosure in before starting.

1
Internal Revenue Service. Unrelated Business Income Tax
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Internal Revenue Service. Instructions for Form 990-T
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Office of the Law Revision Counsel. 26 U.S. Code 513 – Unrelated Trade or Business
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Internal Revenue Service. Unrelated Business Income From Debt-Financed Property Under IRC Section 514
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Internal Revenue Service. Volunteer Labor Exclusion From Unrelated Trade or Business
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Office of the Law Revision Counsel. 26 U.S. Code 512 – Unrelated Business Taxable Income
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Internal Revenue Service. Unrelated Business Income Tax Returns
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Internal Revenue Service. Form 990-T – Exempt Organization Business Income Tax Return
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Office of the Law Revision Counsel. 26 USC 512 – Unrelated Business Taxable Income
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Federal Register. Unrelated Business Taxable Income Separately Computed for Each Trade or Business
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Internal Revenue Service. Return Due Dates for Exempt Organizations – Form 990-T (Corporations)
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Internal Revenue Service. Return Due Dates for Exempt Organizations – Form 990-T (Trusts)
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Internal Revenue Service. About Form 8868, Application for Extension of Time To File an Exempt Organization Return
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Internal Revenue Service. 20.1.2 Failure To File/Failure To Pay Penalties
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Internal Revenue Service. Estimated Tax: Unrelated Business Income
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Internal Revenue Service. Estimated Tax
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Internal Revenue Service. E-File for Charities and Nonprofits
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U.S. Department of the Treasury. Electronic Federal Tax Payment System
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Internal Revenue Service. Public Inspection and Disclosure of Form 990-T