Introduction

Section 1402(a)(13) of the Internal Revenue Code provides that the distributive share of “limited partners, as such” from a partnership is not subject to self-employment tax.[1]  Managers of private equity and hedge funds are routinely structured as limited partnerships to exclude management and incentive fees from self-employment taxes. On November 28, 2023, the Tax Court in Soroban Capital Partners LP v. Commissioner[2] held that the phrase “limited partner, as such” means that, in order to benefit from the self-employment exclusion, a limited partner must be passive and cannot actively participate in the partnership. The Tax Court did not consider whether even de minimis participation would disqualify a limited partner from the exclusion. Accordingly, under Soroban, limited partners in private equity and hedge fund managers must pay self-employment tax if they actively participate in the manager. 

The Tax Court did not set forth the specific factors that would indicate when a limited partner is actively participating in the partnership’s business.  Notwithstanding this continued uncertainty, under the Tax Court’s reasoning, it is likely that most limited partners of investment management firms structured as limited partnerships who participate in the day-to-day activities of the firm would not be considered “limited partners, as such”. And therefore, managers who take the position that their active limited partners are not subject to self-employment tax may wish to review that position in light of Soroban.

Summary of the Law

Generally, section 1401(a) imposes self-employment tax on an individual’s distributive share of income or loss from any trade or business carried on by a partnership of which the individual is a partner.[3] However, section 1402(a)(13) excludes from the computation of self-employment tax the distributive share of income or loss of a “limited partner, as such”. The limited partner exception does not apply to “guaranteed payments” to a limited partner for services actually rendered to, or on behalf of, the partnership to the extent that the payments represent remuneration for those services.[4]

Neither the Code nor the Treasury regulations define “limited partner” for these purposes. The legislative history indicates that Congress enacted section 1402(a)(13) to prevent limited partners from using passive limited partnership interests to qualify for Social Security benefits.

In 1997, regulations were proposed that, if finalized, would have defined a “limited partner” as a person that provides less than 500 hours per year in services to the partnership. Congress questioned the authority of Treasury to issue regulations defining a “limited partner” for these purposes and imposed a moratorium on the issuance of any temporary or final regulations on this matter until July 1, 1998.  

No regulations on this point have subsequently been issued. In 2007, the Joint Committee on Taxation interpreted the statute to mean that all state limited partners are exempt from self-employment tax.[5] However, two Tax Court cases defined the meaning of a “limited partner” for entities other than state law limited partnerships.[6]

In 2011, the Tax Court held in Renkemeyer v. Commissioner that a limited partner of a limited liability partnership is liable for self-employment taxes if the limited partner actively participates in the partnership’s business.[7] In doing so, the Tax Court looked to the legislative history of section 1402(a)(13) and concluded that the limited partner exception applies to income from a return on a partner’s investment and not income for services.

In 2017, the Tax Court held in Castigliola v. Commissioner that active members of a professional limited liability company were not limited partners for purposes of section 1402(a)(13).[8] There, the Tax Court concluded that, based on Renkemeyer, the determination of whether the owner of an entity that is not a state law limited partnership (but is otherwise a partnership for U.S. federal income tax purposes) should be based on whether the owner is the functional equivalent of a limited partner.  

Summary of the Case

Soroban Capital Partners LP (“Soroban”) is a hedge fund manager that is a Delaware limited partnership and a partnership for U.S. federal income tax purposes.[9]

The limited partners of Soroban each provided over 2,000 hours of services to Soroban and affiliates, for which they received guaranteed payments. On its 2016 and 2017 partnership tax returns, Soroban reported the guaranteed payments to each limited partner (but not the remaining ordinary business income) as net earnings from self-employment, but not the limited partners’ share of Soroban’s ordinary business income. On audit, the IRS challenged the exclusion of the limited partners’ share of Soroban’s ordinary business income from self-employment earnings.

Soroban moved for summary judgment, asking the Tax Court to find that, as a matter of law, tax items allocated by a state law limited partnership to its limited partners are not subject to self-employment taxes. The Tax Court rejected that argument and ruled that a “functional analysis” test is applicable in determining “limited partner” status for these purposes. The Tax Court’s reasoning is based on its interpretation of Congressional intent that a “limited partner, as such” was only intended to refer to passive investors and, therefore, section 1402(a)(13) only excludes from self-employment earnings from investments.  

The Tax Court did not provide guidance on the requisite level of participation to constitute “active participation.” Similarly, the Tax Court did not provide guidance on the scope of the limited partner exception in other fact patterns, such as a limited partner that is an affiliate of a person providing services. 


[1] All references to section numbers are to the Internal Revenue Code of 1986 or the proposed Treasury regulations promulgated thereunder.

[2] 161 T.C. No. 12.

[3] Sec. 1401(a); Sec. 1402(a). The self-employment tax of 15.3% consists of the Old-Age, Survivors, and Disability Insurance tax and Hospital Insurance tax (Medicare) on each individual’s self-employment income. Sec. 1401(a)-(b).

[4] Sec. 1402(a)(13).

[5] In 2007, the Joint Committee on Taxation briefly discussed the definition of “limited partner” and read the statute to mean that all state law limited partners are exempt from self-employment tax. See, e.g., Staff of J. Comm. On Tax’n, 110th Cong., Present Law and Analysis Relating to Tax Treatment of Partnership Carried Interests and Related Issues, Part I, JCX-62-07, at 35 n.64 (J. Comm. Print 2007).

[6] The IRS Office of Chief Counsel addressed the scope of the exception in two Chief Counsel Advice (“CCA”) Memoranda. CCA 201436049 concludes that the limited partner exception should only apply to income of an investment nature. CCA 201640014 appears to conclude that partners who actively participate in the business are required to include in self-employment earnings all income of the business from its operations, even if some portion of the earnings are attributable to a return on investment.

[7] 136 T.C. 137.

[8] See Castigliola v. Comm’r, T.C. Memo. 2017-62.

[9] Soroban, a TEFRA partnership, also argued in its motion for summary judgment that, even if state law limited partners could theoretically be subject to self-employment tax, the Tax Court did not have jurisdiction to consider their role in a TEFRA partnership-level hearing. Ultimately, however, the Tax Court held that it had jurisdiction to consider the level of their involvement in a TEFRA partnership-level hearing.

Photo of Jean Bertrand Jean Bertrand

Jean Bertrand is a partner in the Tax Department and a member of the Private Funds Group. Jean advises clients on a broad range of domestic and international tax issues. Her practice focuses on hedge and private equity fund formation, investment structuring, cross-border…

Jean Bertrand is a partner in the Tax Department and a member of the Private Funds Group. Jean advises clients on a broad range of domestic and international tax issues. Her practice focuses on hedge and private equity fund formation, investment structuring, cross-border lending transactions and other financings, and providing general tax advice to corporations, partnerships, high-net-worth individuals and families. In addition, Jean has significant experience in advising public charities, private foundations and other tax-exempt organizations on structural and operating matters, including obtaining tax-exempt status, managing unrelated business taxable income, complying with the excess benefit transaction rules, grant-making, fundraising, and structuring investments.

Prior to becoming a lawyer, Jean was registered as a certified public accountant in New York and worked for several years as an auditor at a major public accounting firm. Prior to joining the Firm, Jean was a Special Counsel at Cadwalader, Wickersham and Taft LLP.

Photo of Scott S. Jones Scott S. Jones

Scott S. Jones is a partner in the Tax Department and a member of the Private Funds Group.

Scott’s practice focuses on tax planning for private equity fund managers in connection with their fund-raising and internal organizational matters, as well as investment activities.

Scott S. Jones is a partner in the Tax Department and a member of the Private Funds Group.

Scott’s practice focuses on tax planning for private equity fund managers in connection with their fund-raising and internal organizational matters, as well as investment activities. In addition, he represents U.S. and non-U.S. investors in connection with their investments in venture capital funds, buyout funds, hedge funds and other investment partnerships. In this capacity, as well as in connection with advising private equity funds with respect to their investment activities, Scott regularly advises on international tax issues that arise with investments in the U.S. by non-U.S. investors (including non-U.S. investors subject to special U.S. tax treatment, such as governmental pension plans and tax-exempt organizations), as well as investments outside of the U.S. by U.S. persons.

He also has significant experience structuring tax-free and taxable mergers and acquisitions (including cross-border transactions), equity compensation arrangements and innovative financing techniques for investments in tax transparent entities such as partnerships, limited liability companies and Subchapter S corporations.

Photo of Mary B. Kuusisto Mary B. Kuusisto

Mary B. Kuusisto is a partner in the Private Investment Funds Group, a member of the Tax Department and head of the London office.

Mary has almost 30 years of experience in the private equity industry. She advises clients on structuring and operations…

Mary B. Kuusisto is a partner in the Private Investment Funds Group, a member of the Tax Department and head of the London office.

Mary has almost 30 years of experience in the private equity industry. She advises clients on structuring and operations of private investment funds globally, including secondary transactions, with particular experience in tax-related matters. She has represented numerous private investment funds in their formation and operational activities, including venture capital, buyout, distressed debt, mezzanine finance, natural resource, secondary, and funds of funds, as well as geographic and sector specific funds. Mary also advises investment fund managers and general partners with respect to their internal governance, compensation arrangements and economic structures.

Photo of Arnold P. May Arnold P. May

Arnold P. May is a partner in the Tax Department and a member of the Private Funds Group. His practice focuses on tax planning for private equity fund managers in connection with their fund-raising and internal organizational matters, as well as investment activities.…

Arnold P. May is a partner in the Tax Department and a member of the Private Funds Group. His practice focuses on tax planning for private equity fund managers in connection with their fund-raising and internal organizational matters, as well as investment activities.

In addition, Arnold represents U.S. and non-U.S. investors in connection with their investments in venture capital funds, buyout funds, hedge funds and other investment partnerships. In this capacity, as well as in connection with advising private equity funds with respect to their investment activities, he regularly advises on international tax issues that arise in connection with investments in the U.S. by non-U.S. investors (including non-U.S. investors subject to special U.S. tax treatment, such as governmental pension plans and tax-exempt organizations), as well as investments outside of the U.S. by U.S. persons. Arnold also has significant experience structuring tax-free and taxable mergers and acquisitions (including cross-border transactions), equity compensation arrangements and innovative financing techniques for investments in tax transparent entities such as partnerships, limited liability companies and Subchapter S corporations.

Arnold is a frequent speaker at industry conferences, including Financial Research Associates Tax Practices for Private Equity Funds, Institute for International Research Private Equity Tax Practices, Private Equity International Strategic Financial Management for Private Equity Firms, and Private Equity CFO Association. Highly-regarded for his thought leadership, Arnold is the editor of Private Equity International‘s “US Tax Considerations for Investment Fund Structuring”, which was published in August of 2015. He also co-authored an article on “Management Company Structuring” (with Scott Jones) for the April 2008 Private Equity International Fund Structures Supplement.

Photo of David S. Miller David S. Miller

David Miller is a partner in the Tax Department. David advises clients on a broad range of domestic and international corporate tax issues. His practice covers the taxation of financial instruments and derivatives, cross-border lending transactions and other financings, international and domestic mergers…

David Miller is a partner in the Tax Department. David advises clients on a broad range of domestic and international corporate tax issues. His practice covers the taxation of financial instruments and derivatives, cross-border lending transactions and other financings, international and domestic mergers and acquisitions, multinational corporate groups and partnerships, private equity and hedge funds, bankruptcy and workouts, high-net-worth individuals and families, and public charities and private foundations. He advises companies in virtually all major industries, including banking, finance, private equity, health care, life sciences, real estate, technology, consumer products, entertainment and energy.

David is strongly committed to pro bono service, and has represented more than 200 charities. In 2011, he was named as one of eight “Lawyers Who Lead by Example” by the New York Law Journal for his pro bono service. David has also been recognized for his pro bono work by The Legal Aid Society, Legal Services for New York City and New York Lawyers For The Public Interest.

Photo of Jeremy Naylor Jeremy Naylor

Jeremy Naylor is a partner in the Tax Department and a member of the Private Funds Group. Jeremy works with fund sponsors across asset classes, and their investors, in all tax aspects of private investment fund matters.

In addition, Jeremy works with his…

Jeremy Naylor is a partner in the Tax Department and a member of the Private Funds Group. Jeremy works with fund sponsors across asset classes, and their investors, in all tax aspects of private investment fund matters.

In addition, Jeremy works with his fund sponsor clients in designing and implementing carried interest plans and other compensation arrangements for the general partners of private funds.

Jeremy also advises U.S. and non-U.S. institutional investors, governmental investors, pension trusts and other tax-exempt organizations in their investments in private funds and joint ventures.

He also frequently represents secondary fund managers in connection with the tax aspects of their business, including fund formation, secondary transactions (including restructurings and private tender offers), primary investments and co-investments.

Jeremy also advises on M&A transactions involving his investment management clients, including minority sale transactions, preferred financing and control transactions.

Jeremy has significant experience structuring inbound investment in U.S. real estate by non-U.S. investors. In addition, Jeremy has significant experience in structuring domestic and cross-border mergers and acquisitions, advising on capital markets transactions and equity compensation arrangements.

Jeremy is a frequent speaker at industry conferences related to private investment funds, including the Merrill Lynch Private Equity and Venture Capital CFO Conference and the Practising Law Institute’s series on international tax. In addition, Jeremy frequently participates in webinars and provides other thought leadership in print media related to changes in the tax laws and their impact on private fund managers.

Photo of Amanda H. Nussbaum Amanda H. Nussbaum

Amanda H. Nussbaum is the chair of the Firm’s Tax Department as well as a member of the Private Funds Group. Her practice concentrates on planning for and the structuring of domestic and international private investment funds, including venture capital, buyout, real estate…

Amanda H. Nussbaum is the chair of the Firm’s Tax Department as well as a member of the Private Funds Group. Her practice concentrates on planning for and the structuring of domestic and international private investment funds, including venture capital, buyout, real estate and hedge funds, as well as advising those funds on investment activities and operational issues. She also represents many types of investors, including tax-exempt and non-U.S. investors, with their investments in private investment funds. Business partners through our clients’ biggest challenges, Amanda is a part of the Firm’s cross-disciplinary, cross-jurisdictional Coronavirus Response Team helping to shape the guidance and next steps for clients impacted by the pandemic.

Amanda has significant experience structuring taxable and tax-free mergers and acquisitions, real estate transactions and stock and debt offerings. She also counsels both sports teams and sports leagues with a broad range of tax issues.

In addition, Amanda advises not-for-profit clients on matters such as applying for and maintaining exemption from federal income tax, minimizing unrelated business taxable income, structuring joint ventures and partnerships with taxable entities and using exempt and for-profit subsidiaries.

Amanda has co-authored with Howard Lefkowitz and Steven Devaney the New York Limited Liability Company Forms and Practice Manual, which is published by Data Trace Publishing Co.

Photo of Janicelynn Asamoto Park Janicelynn Asamoto Park

Janicelynn Asamoto Park is a partner in the Tax Department and a member of the Private Funds Group. She counsels fund sponsors and their investors as to the tax and economic considerations relating to forming, operating, and investing in private investment funds, co-investment…

Janicelynn Asamoto Park is a partner in the Tax Department and a member of the Private Funds Group. She counsels fund sponsors and their investors as to the tax and economic considerations relating to forming, operating, and investing in private investment funds, co-investment vehicles, and other investment partnerships across asset classes. Janicelynn also regularly advises investors and sponsors in buy-side and sell-side secondary transactions (including in connection with GP-led fund restructurings).

Her practice also includes advising on domestic and cross-border financings and investments, inbound and outbound private mergers and acquisitions, and equity-compensation arrangements.

Janicelynn currently serves on the board of Reach Out and Read of Greater New York, a not-for-profit organization that partners with physicians to promote early literacy in low-income communities.

Before joining Proskauer, Janicelynn served as a law clerk for the Honorable Denny Chin of the U.S. Court of Appeals for the Second Circuit, and was a youth development volunteer in Honduras with the U.S. Peace Corps.

Photo of Stuart Rosow Stuart Rosow

Stuart Rosow is a partner in the Tax Department and a leader of the transactional tax team. He concentrates on the taxation of complex business and investment transactions. His practice includes representation of publicly traded and privately held corporations, financial institutions, operating international…

Stuart Rosow is a partner in the Tax Department and a leader of the transactional tax team. He concentrates on the taxation of complex business and investment transactions. His practice includes representation of publicly traded and privately held corporations, financial institutions, operating international and domestic joint ventures, and investment partnerships, health care providers, charities and other tax-exempt entities and individuals.

For corporations, Stuart has been involved in both taxable and tax-free mergers and acquisitions. His contributions to the projects include not only structuring the overall transaction to ensure the parties’ desired tax results, but also planning for the operation of the business before and after the transaction to maximize the tax savings available. For financial institutions, Stuart has participated in structuring and negotiating loans and equity investments in a wide variety of domestic and international businesses. Often organized as joint ventures, these transactions offer tax opportunities and present pitfalls involving issues related to the nature of the financing, the use of derivations and cross-border complications. In addition, he has advised clients on real estate financing vehicles, including REITs and REMICs, and other structured finance products, including conduits and securitizations.

Stuart’s work on joint ventures and partnerships has involved the structuring and negotiating of a wide range of transactions, including deals in the health care field involving both taxable and tax-exempt entities and business combinations between U.S. and foreign companies. He has also advised financial institutions and buyout funds on a variety of investments in partnerships, including operating businesses, as well as office buildings and other real estate. In addition, Stuart has represented large partnerships, including publicly traded entities, on a variety of income tax matters, including insuring retention of tax status as a partnership; structuring public offerings; and the tax aspects of mergers and acquisitions among partnership entities.

Also actively involved in the health care field, Stuart has structured mergers, acquisitions and joint ventures for business corporations, including publicly traded hospital corporations, as well as tax-exempt entities. This work has led to further involvement with tax-exempt entities, both publicly supported entities and private foundations. A significant portion of the representation of these entities has involved representation before the Internal Revenue Service on tax audits and requests for private letter rulings and technical advice.

Stuart also provides regular advice to corporations, a number of families and individuals. This advice consists of helping to structure private tax-advantaged investments; tax planning; and representation before the Internal Revenue Service and local tax authorities on tax examinations.

A frequent lecturer at CLE programs, Stuart is also an adjunct faculty member of the Columbia Law School where he currently teaches Partnership Taxation.

Photo of Rita N. Halabi Rita N. Halabi

Rita Halabi is an associate in the Tax Department. She advises public and private companies on a variety of U.S. federal corporate, partnership and international tax matters, including private equity and investment fund transactions, tax controversy, mergers and acquisitions, and financing transactions. In…

Rita Halabi is an associate in the Tax Department. She advises public and private companies on a variety of U.S. federal corporate, partnership and international tax matters, including private equity and investment fund transactions, tax controversy, mergers and acquisitions, and financing transactions. In addition, Rita regularly blogs about developments in federal tax law on the Proskauer Tax Talks blog.