Tax-exempt investors, including endowments, foundations, pension funds, and IRAs, are generally exempt from federal income tax on investment returns. But unrelated business taxable income (UBTI) is an exception. If a tax-exempt LP's share of fund income includes UBTI, the LP owes tax on that income even though it is otherwise tax-exempt. UBTI can create unexpected tax liability, additional filing requirements, and, for some institutional investors, reputational concerns that affect their willingness to invest.
What Generates UBTI
UBTI arises when a tax-exempt entity receives income from an activity that is not substantially related to its exempt purpose. In the context of private funds, three categories are most relevant:
- Debt-financed income. When a fund uses leverage to acquire investments, the income attributable to borrowed funds is treated as UBTI for tax-exempt partners. This includes income from subscription credit facilities, margin borrowing, and leveraged acquisitions. The UBTI is calculated proportionally based on the average amount of debt used relative to the investment's adjusted basis.
- Operating business income. If the fund holds a direct interest in an operating business (as opposed to a passive investment), the income from that business may constitute UBTI. This is more common in private equity funds that acquire controlling interests in companies than in venture capital funds with minority positions.
- Income from controlled foreign corporations (CFCs). Certain income from foreign corporations controlled by the fund or its affiliates can trigger UBTI under the Subpart F rules, even if the income would otherwise be exempt as passive investment income.
Why UBTI Matters to Fund Managers
UBTI is not just a tax-exempt investor's problem. It directly affects your ability to raise capital from a significant segment of the institutional market.
- UBTI creates a direct tax liability for the tax-exempt LP, requiring payment of federal income tax at trust rates (up to 37%) on the unrelated business income
- Tax-exempt LPs must file Form 990-T to report and pay tax on UBTI, adding administrative cost and complexity to what was supposed to be a tax-free investment
- UBTI can trigger state income tax filing obligations in states where the fund operates or invests, compounding the administrative burden
- Many endowments and foundations have internal UBTI thresholds and will decline to invest in funds that are likely to generate more than a de minimis amount
- For foundations subject to the excise tax on net investment income, UBTI adds further complexity to their annual tax calculations
Blocker Corporations
The most common structural solution to UBTI is a blocker corporation. A blocker is a taxable entity interposed between the fund and the tax-exempt LP. The blocker entity holds the LP interest in the fund, absorbs UBTI at the corporate level, and distributes after-tax dividends to the tax-exempt investor.
- The tax-exempt investor owns shares in the blocker corporation, not a direct LP interest in the fund
- The blocker pays corporate income tax on its share of fund income, effectively absorbing the UBTI
- Distributions from the blocker to the tax-exempt investor are dividends, which are generally not UBTI
- Blockers add cost (entity formation, corporate tax returns, potential double taxation) and are only justified when the expected UBTI exposure is significant enough to warrant the expense
Blocker corporations can be domestic C-corps or offshore entities (commonly formed in the Cayman Islands). The choice depends on the investor's specific situation, the fund's structure, and the applicable tax treaty benefits.
Fund Manager Obligations
Fund managers with tax-exempt investors in their LP base have specific obligations related to UBTI:
- Disclose UBTI risk in the PPM. Your offering documents should identify the activities that may generate UBTI (leverage, operating businesses, CFCs) and explain the potential tax consequences for tax-exempt investors.
- Track and report UBTI-generating activities. Your administrator and tax preparer must identify income items that constitute UBTI and report them accurately on each tax-exempt LP's K-1.
- Ensure accurate K-1 reporting. K-1s for tax-exempt investors must separately state UBTI items so the LP can file Form 990-T correctly. Errors in UBTI reporting can result in penalties for the LP and damage the fund's relationship with institutional investors.
- Consider structural accommodations. Some funds offer parallel blocker vehicles or UBTI-minimizing structures for tax-exempt investors. Whether this makes sense depends on the size of your tax-exempt LP base and the expected level of UBTI-generating activity.
This article is for informational purposes only and does not constitute legal or tax advice. Consult qualified professionals for guidance specific to your situation.