Many law firm leaders and partner-attorneys operate under the misconception that partnership pass-through distributions can be sheltered from self-employment taxes by adopting specific entity forms, such as Limited Liability Partnerships (LLPs), Professional Limited Liability Companies (PLLCs), or Limited Partnerships (LPs), or by attempting to treat distributive shares as tax-exempt distributions.
Unlike corporate structures, partnerships operate under a distinct statutory pass-through framework under Subchapter K of the Internal Revenue Code:
- No Employee Status for Partners: Under long-standing Treasury and IRS tax guidance (Rev. Rul. 69-184), a partner cannot be treated as an employee of their own partnership and cannot receive W-2 wages.
- Rejection of Wage-Splitting Shortcuts: The IRS has explicitly rejected attempts by partnerships and LLCs to split partner earnings into a low service payment and an exempt profit distribution. In Chief Counsel Advice (CCA) 201436049, an investment management LLC attempted to pay low service compensation/guaranteed payments and exclude the remaining profit allocations from SECA tax. The IRS explicitly rejected this approach, ruling that partnerships cannot alter the character of pass-through net income by mislabeling profits or carving out artificial service fees.
- Statutory Pass-Through Rule: Under IRC § 1401 and § 1402(a), an individual partner’s distributive share of ordinary business income derived from any trade or business carried on by the partnership is automatically included in "net earnings from self-employment" (NESE) and subject to Self-Employment Contributions Act (SECA) tax.
The "Service Partnership" Override and Limits of Entity Choice
When Congress enacted the limited partner exclusion under IRC § 1402(a)(13) in the Social Security Amendments of 1977, its primary objective was to prevent purely passive investors who purchased limited partnership interests from acquiring Social Security coverage without performing actual work. The statute excludes a "limited partner, as such" from SECA tax on their distributive share of partnership income, while specifically including guaranteed payments made for services under IRC § 707(c). IRC § 1402(a)(13).
As business entities evolved, giving rise to state-law LLPs, PLLCs, LLCs, and LLLPs, many taxpayers argued that holding a limited partner title or enjoying state-law limited liability protection automatically secured the § 1402(a)(13) SECA exemption.
For professional service firms, the IRS is challenging this position.
Landmark Tax Court Precedents: Renkemeyer and Castigliola
The IRS’s enforcement campaign against service partnerships has been repeatedly validated by the courts:
Renkemeyer, Campbell & Weaver, LLP v. Commissioner (136 T.C. 137)
In Renkemeyer, attorney-partners in a Kansas LLP law firm allocated the vast majority of firm net income to an S corporation partner owned by an ESOP, while treating their remaining law firm distributive shares as exempt under § 1402(a)(13). The Tax Court thoroughly examined the legislative history of § 1402(a)(13) and held that Congress never intended to exclude partners who perform services for a partnership in their capacity as partners. Because the law firm’s income derived directly from legal services performed by the attorney-partners rather than an investment return on capital, the court ruled that their entire distributive shares were subject to SECA tax.
Castigliola v. Commissioner (T.C. Memo 2017-62)
In Castigliola, member-managers of a Mississippi law firm organized as a PLLC received substantial guaranteed payments for their services. The attorneys argued that their guaranteed payments satisfied their SECA tax obligations and that their remaining distributive shares of law firm profit were exempt limited partner returns. The Tax Court rejected this wage-splitting attempt, concluding that because the attorneys practiced law full-time, supervised staff, and participated in management, their entire distributive share of law firm net earnings, not just their guaranteed payments, was subject to SECA tax.
The Financial Exposure for Law Firms
A partnership SECA audit creates a profound financial risk for law firms due to the binary nature of the functional test:
- No Partial Adjustment: Unlike typical tax adjustments where only specific items are recharacterized, a partnership SECA audit applies an all-or-nothing standard. If an active attorney-partner fails the functional status test under § 1402(a)(13), the IRS recharacterizes the partner's entire distributive share of ordinary partnership income as net earnings from self-employment.
- The Tax Rate Burden: SECA tax consists of two main components:
- Social Security Tax: 12.4% on self-employment earnings up to the annual wage base cap ($184,500 for 2026).
- Medicare Tax: 2.9% uncapped tax on all net earnings from self-employment, plus an Additional Medicare Tax of 0.9% for high-income earners above threshold amounts.
- Firm-Level Impact: For high-earning law firm equity partners, having 100% of distributive shares reclassified under SECA exposes millions of dollars in firm profit allocations to the uncapped 2.9% + 0.9% Medicare taxes.
Key Takeaways for Part 1
- Entity Choice Is Not a Shield: Operating as an LLP, PLLC, LLC, or LP under state law does not protect active attorney-partners from SECA tax.
- Wage-Splitting Shortcuts Fail: Attempts to pay low guaranteed payments and treat remaining law firm profit distributions as exempt will be rejected by the IRS.
- Comprehensive Exposure: Active law partners who bill hours, manage clients, or direct firm operations must prepare for SECA tax exposure across their total pass-through net income.
Part 2: The Modern SECA Landscape for Law Firms covers the 2026 Soroban and K Alain appeals court decisions, the retired partner exception, BBA audits, and a compliance plan for firm leadership.