Fifth Circuit Reverses Tax Court, Sides with Taxpayer and Roundtable in Limited Partnership Tax Dispute

The U.S. Court of Appeals for the Fifth Circuit issued a 2-1 decision in Sirius Solutions, L.L.L.P. v. Commissioner (No. 24-60240) on Jan. 16, restricting the federal government’s effort to extend self-employment taxes to a broad range of limited partners in limited partnerships. The Real Estate Roundtable (RER) submitted an amicus brief in the case, and the Court’s ruling closely aligns with the RER’s position.

Court Ruling

  • Since 1977, the tax code has exempted limited partners from self-employment taxes. In recent years, the IRS has asserted a new and more restrictive test to determine whether a limited partner qualifies for the exclusion.
  • The Fifth Circuit held that the Section 1402(a)(13) “limited partner” exception from self-employment (SECA) tax applies to a partner in a state-law limited partnership who has limited liability. (TaxNotes, Jan. 27)
  • The ruling vacates and remands the Tax Court decision that followed Soroban Capital Partners LP v. Commissioner (No. 25-2079), and applied a “functional analysis” of partner roles and activities to determine whether the SECA exclusion applies. (Sullivan Cromwell, Jan. 27)
  • The Fifth Circuit rejected that approach and held that “limited partner” in Section 1402(a)(13) is a status-based, state-law concept tied to limited liability, not an activity test.
  • The decision is the first appellate ruling to reach the issue and reverse the Tax Court’s restrictive interpretation. (Reuters, Jan. 21)
  • This ruling has set a precedent for future SECA tax cases, with significant consequences for real estate and other industries that use limited partnerships for business purposes.

Roundtable Advocacy

  • In August 2024, RER submitted an amicus brief to the Fifth Circuit. The brief argued that the IRS’s interpretation was flawed and inconsistent with decades of state law recognizing that limited partners can provide services while retaining limited partner status. (Roundtable Weekly, Sept. 6, 2024)
  • The brief emphasized that pre-1977 state court decisions and the IRS’s own 1994 proposed regulations contradict the government’s position that limited partners must be passive to avoid SECA taxes.
  • RER argued the Tax Court’s “passive investor” test is found nowhere in the statute and reflects a misunderstanding of partnership law that real estate and other businesses have relied on for decades.
  • RER has continued this advocacy across the circuits. In Dec. 2025, RER filed an amicus brief with the Second Circuit in Soroban, challenging the IRS’s restrictive interpretation of the “limited partner exception” under Section 1402(a)(13). (Roundtable Weekly, Dec. 19, 2025)
  • This successful outcome in the Sirius case supports RER’s position and could reduce momentum for formal tax guidance that would broaden the reach of SECA taxes.

What’s Next

  • Related appeals are pending in the First Circuit (Denham) and Second Circuit (Soroban). (TaxNotes, Jan. 27)
  • Divergent outcomes could create a circuit split and increase the odds of Supreme Court review. (Skadden Arps, Jan. 27)
  • The First Circuit is scheduled to hear oral arguments in Denham on Feb. 5. (TaxNotes, Jan. 27)

RER remains committed to protecting entrepreneurs’ ability to flexibly organize in partnerships and other pass-through entities that promote capital formation, risk-taking, and economic growth, and it will remain engaged as the SECA dispute moves forward.

Roundtable Urges Second Circuit Court of Appeals to Preserve Employment Tax Exemption for Limited Partners

The Real Estate Roundtable (RER) filed an amicus brief this week with the Second Circuit Court of Appeals in Soroban Capital Partners LP v. Commissioner, a case that challenges the IRS’s restrictive interpretation of the “limited partner exception” from self-employment (SECA) taxes under section 1402(a)(13) of the tax code. (Amicus Brief, Dec. 15)

Why It Matters

  • Income-producing real estate—rental housing, neighborhood shopping centers, office buildings, etc.—is predominantly owned and operated in partnership form. In 2022, there were over 2.2 million real estate partnerships in the United States, with nearly 9.6 million partners.
  • The Self-Employment Contributions Act (SECA) imposes Social Security and Medicare taxes on net earnings from self-employment. The SECA tax rate on earnings above $250,000 is 3.8%. While the tax applies to a broad range of trade or business income, Congress expressly exempted limited partners from SECA in the Social Security Amendments of 1977.
  • Legislative proposals and proposed regulations have unsuccessfully attempted to extend the 3.8% SECA tax or the 3.8% net investment income tax to limited partners.
  • The IRS has undertaken an aggressive effort to redefine what it means to be a limited partner by challenging taxpayers and litigating the issue in several cases before the Tax Court.

Roundtable View

  • Real estate partnerships have relied for decades on longstanding tax law as it relates to limited partners and the SECA exception.
  • In Soroban and related cases, the Tax Court has imposed a judge-made test and concluded contrary to decades of established state law that a limited partner must be a ‘passive investor,’ notes the RER amicus brief.
  • The Tax Court’s 2023 Soroban ruling wrongly introduced a federal “passivity” requirement that is unmoored from statute, legislative history, and Treasury’s own prior interpretations. However, limited partners have routinely provided business services to their partnerships without losing their limited liability status. (Roundtable Weekly, Sept. 12)
  • “A shift in the federal tax definition of a limited partner could alter underlying partnership economics, increase tax burdens, and create significant uncertainty for real estate and other pass-through businesses,” said RER President and CEO Jeffrey DeBoer. “Such changes need to go through Congress and withstand legislative scrutiny.”

Background

  • RER’s amicus brief was drafted by litigation counsel at Sullivan & Cromwell LLP, in consultation with RER’s Tax Policy Advisory Committee (TPAC). RER also filed an amicus brief in August
    with the First Circuit Court of Appeals in a related case, Denham Capital Management LP v. Commissioner. (Roundtable Weekly, Sept. 12)

Next Steps

The decision in any of the pending cases could have nationwide implications for how partnerships are treated under SECA. A ruling against the Tax Court’s passive investor test would reinforce state law’s central role in defining “limited partner” status.