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K Alain v. Commissioner — Fifth Circuit vacated and remanded for a new limited-partner tax analysis

Reported / Citable

Case
K Alain, L.L.L.P.; K Alain GP, L.L.C.; Tax Matters Partner v. Commissioner of Internal Revenue
Court
U.S. Court of Appeals for the Fifth Circuit
Judge
James E. Graves Jr. (Barack Obama, 2011); Kurt D. Engelhardt (Donald Trump, 2018); Andrew S. Oldham (Donald Trump, 2018)
Date Decided
August 12, 2026
Docket No.
24-60240
Topics
Federal Tax; Self-Employment Tax; Limited Partnerships; Statutory Interpretation
Source
Read the full opinion

Background

K Alain, L.L.L.P., formerly Sirius Solutions, L.L.L.P., is a Delaware limited liability limited partnership operating a business-consulting firm. For tax years 2014 through 2016, Sirius allocated its ordinary business income or loss to its individual limited partners but reported no net earnings from self-employment, relying on 26 U.S.C. § 1402(a)(13). That provision generally excludes a “limited partner’s” distributive share from net earnings subject to self-employment tax, except for qualifying guaranteed payments for services.

After auditing the returns, the IRS determined that the individual partners were not “limited partners” within the statute’s meaning and adjusted Sirius’s net earnings from self-employment. The Tax Court upheld the adjustments under Soroban Capital Partners LP v. Commissioner, which treated the exception as available only to partners functioning as passive investors. Sirius appealed.

On rehearing, the Fifth Circuit withdrew its prior opinion, denied rehearing en banc, granted panel rehearing, and issued a substituted opinion. The panel majority again vacated the Tax Court’s judgment; Judge Graves dissented.

The Court’s Holding

The Fifth Circuit held that the original public meaning of “limited partner” when Congress enacted § 1402(a)(13) in 1977 was a partner who plays no significant role in managing or running the business. The court concluded that federal law—not merely a partner’s status under state organizational law—governs the term’s meaning for federal tax purposes.

The majority rejected the Tax Court’s stricter Soroban rule limiting the exception to entirely passive investors. Drawing on contemporaneous dictionaries, uniform partnership laws, treatises, and case law, it reasoned that a limited partner could have some nonmanagerial involvement without losing limited-partner status. Because the Tax Court had applied the wrong standard, the panel vacated its judgment and remanded for the Commissioner to consider whether Sirius’s partners fell within the Fifth Circuit’s definition.

Judge Graves would have affirmed. He concluded that the statutory text and structure restrict the exemption to partners functioning as passive investors and maintained that the parties had stipulated Sirius’s partners would not qualify under the Tax Court’s functional analysis.

Key Takeaways

  • For § 1402(a)(13), a “limited partner” is one who plays no significant role in managing or running the partnership’s business.
  • The Fifth Circuit rejected Soroban’s categorical “passive investor” standard and held that limited nonmanagerial participation does not necessarily defeat the exemption.
  • The court did not decide whether Sirius’s individual partners qualify; it vacated and remanded for application of the newly announced standard.

Why It Matters

The decision narrows the circumstances in which partnership involvement automatically subjects a limited partner’s distributive share to self-employment tax. Within the Fifth Circuit, the inquiry now focuses on whether a partner played a significant managerial or operational role, rather than whether the partner was completely passive.

The ruling may materially affect self-employment-tax treatment for limited partnerships whose partners perform some functions for the business. It does not, however, establish that state-law designation alone controls or that K Alain’s partners ultimately qualify for the statutory exclusion.

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