A U.S. blocker is an intermediary corporate vehicle used in fund structures to manage specific U.S. tax exposures for certain investor groups.
It is commonly used by non-U.S. investors and U.S. tax-exempt investors investing into U.S. strategies through partnership-style funds, particularly where the underlying investments may generate income treated as effectively connected with a U.S. trade or business or give rise to unrelated business taxable income.
When blocker structures typically become relevant
In practice, the use of blocker structures is closely linked to the composition of the investor base and the geographic focus of the underlying investments.
Common scenarios include:
Non-U.S. managers raising capital from U.S. tax-exempt investors, such as pension funds or endowments, where mitigation of potential Unrelated Business Taxable Income (UBTI) exposure may be required
International fund structures investing into U.S. strategies or assets, where the underlying activity may generate Effectively Connected Income (ECI) for non-U.S. investors and associated U.S. filing obligations
Multi-investor class structures, where different investor groups participate in the same fund but require differentiated tax treatment
In these situations, the use of a blocker is not simply a structural preference, but a practical mechanism that can support broader investor participation while helping to manage specific tax and reporting considerations.
Many private funds are structured as pass-through vehicles. This means income and gains flow directly to investors for tax purposes. While this is efficient for many investors, it can create adverse outcomes for others, particularly where U.S. tax rules apply.
A U.S. blocker is typically structured as a corporation that sits between the investor and the underlying fund. Income is taxed at the corporate level within the blocker, rather than flowing directly to the investor. This can help prevent the underlying income from being allocated directly to the investor in a form that creates ECI or UBTI exposure, although the blocker itself is generally expected to be subject to corporate-level taxation.
U.S. blockers are commonly used to address two key concerns:
Using a blocker may allow investors to participate in U.S. investment strategies while managing specific tax sensitivities and reducing direct filing or reporting complexity, albeit with an additional layer of cost and corporate-level taxation, which requires careful assessment at the structuring stage.
U.S. blockers may be established onshore or offshore depending on the overall fund structure, investor mix, and tax considerations. Their use is a well-established feature of institutional fund structuring and is typically addressed upfront in fund documentation and investor disclosures.
To learn more about U.S. blockers and how we can help, please download our service brochure.
Important Note: This material is for general information only and does not constitute tax, legal or investment advice.