Unrelated business income tax.

A self-directed IRA stays tax-exempt while it earns the kind of income Congress designed retirement accounts to earn. Interest, dividends, rent, royalties, and capital gains generally pass through tax-free until you take distributions.

Two situations break that exemption. The IRA owes unrelated business income tax (UBIT) when it earns active business income, and it owes UBIT on debt-financed income (UDFI) on the borrowed share of any asset it holds. Both apply only to the portion of income that loses the exemption. The rest of the account keeps growing tax-deferred or tax-free as normal.

The starting point

Most IRA income is excluded from UBIT.

Under 26 U.S.C. §512(b), the IRS strips most passive income out of UBIT before any tax is calculated. Lead with the exclusions, then check the exceptions.

• Interest on trust deeds, private notes, and tax-lien certificates. Excluded.
• Rent from real property, with limited carve-outs for personal-property rent and mixed leases. Excluded.
• Dividends and royalties. Excluded.
• Capital gains from selling property the IRA holds for investment. Excluded.

The exemption breaks in two scenarios.

• Active business income. Profits from running a business inside the IRA, including a wholly-owned LLC that operates rather than invests. 26 U.S.C. §513.
• Debt-financed income. Any of the otherwise-excluded categories becomes taxable on the borrowed share when the IRA takes on a mortgage or loan to buy the asset. 26 U.S.C. §514.

The two flavors

UBTI vs UDFI.

UBTI is the taxable slice from an active business. UDFI is the taxable slice tied to borrowed money. Both are taxed under the same UBIT rules and reported on the same return, but they come from different places.

UDFI is proportional. If the IRA owns a rental property and 70% of the purchase was financed by a mortgage, 70% of the rent each year and 70% of any sale profit is UDFI. As the loan is paid down, the taxable share shrinks. The all-cash share keeps growing tax-free as normal.

UBTI from a business is not proportional. Once the IRA is earning active business income, the full income from that activity is subject to UBIT, less ordinary business expenses.

What sets it off

Common triggers.

A few asset structures put an IRA on the active-business side of the line.

• An operating business held in the IRA. A wholly-owned LLC that runs an operation, like a carwash, a storage facility, or a service company. Income flows through to the IRA as UBTI.
• High-volume real-estate flipping. Buying, fixing, and reselling property on a scale that looks like a trade rather than an investment. Capital-gain treatment is lost.
• Extensive private lending. Originating, underwriting, and servicing loans at the scale of a money-lending business. Interest stops being passive yield and becomes business income.
• Any IRA asset bought with borrowed money. Mortgages on rental real estate are the most common. The financed share of every dollar of income or gain is UDFI.

If the IRA holds a partnership interest (an LLC taxed as a partnership), the partnership’s Schedule K-1 reports whether any of the IRA’s share is UBTI. Pull the K-1 first and read box 20, code V.

The math

How to calculate UBIT.

Four steps. Run them once a year, in time for the April 15 filing deadline.

1. Establish gross unrelated income

Total the IRA’s annual income from sources that fall outside the §512(b) exclusions. Include the financed share of any debt-financed income. If the total is $1,000 or more, the IRA must file Form 990-T. The IRA needs its own federal Employer Identification Number to file. Apply for the EIN before the first return is due.

2. Determine deductions and exemptions

For UBTI, subtract business operating expenses tied to producing the income. For UDFI, exclude the share of gross income that matches the unfinanced portion of the asset. If the IRA owns 30% of a property outright and 70% is debt-financed, 70% of gross UDFI flows through to the next step.

3. Find the taxable amount

Subtract the deductions and exemptions from gross unrelated income. The difference is net UBTI subject to tax.

4. Apply the UBIT rate

UBTI is taxed at the rates that apply to trusts and corporations. The brackets are compressed, so even modest UBTI can hit a high rate. Apply the rate to net UBTI to get the UBIT due. The IRA pays the tax from inside the account.

Plan ahead

Strategies to reduce UBIT exposure.

UBIT is a cost to account for, not a reason to avoid alternative assets. A few structural choices can keep more of the income excluded.

• Stay in the passive-income lanes. Rent from long-term tenants, interest from trust deeds, dividends from a portfolio company, and capital gains from a held-for-investment property are all excluded under §512(b). When the strategy can stay there, UBIT does not apply.
• Pay down debt before earning. UDFI shrinks as the loan balance shrinks. Acquisition financing is also disregarded for UDFI purposes 12 months after the loan is paid off.
• Use a blocker corporation for active businesses. The IRA owns a C-corp. The corporation runs the operating business and pays corporate income tax on its profits. Dividends from the corporation flow to the IRA as passive income, excluded from UBIT. This adds an entity and a tax return, so weigh it against the UBIT bill before deciding.
• Match the account type to the strategy. A Roth self-directed IRA pays UBIT the same way a traditional one does, but qualified withdrawals come out tax-free. Compare the long-run after-tax outcome before choosing the wrapper.
• Bring a tax pro into the deal early. UBIT planning is most effective at acquisition, not at the K-1. A CPA or attorney familiar with self-directed structures can flag exposure before the deal closes.

Get started

Open a self-directed IRA with Accuplan.

A self-directed IRA opens the door to alternatives that can outpace a stock-only portfolio. UBIT is part of the cost of that flexibility on a few specific asset structures, and most accounts never trigger it. Accuplan, as third-party administrator, handles day-to-day servicing of the account. American Estate & Trust serves as custodian and files the year-end Form 5498. The account holder files Form 990-T when UBIT applies.

When you are ready, schedule a call or open a self-directed IRA with Accuplan.