The Noncompete Problem: What New York law means for law firms considering private equity investment

Private equity investment in U.S. law firms is accelerating through MSO structures, but New York's noncompete restrictions create a fundamental structural challenge absent from comparable professional services deals. Unlike physicians or dentists—sectors where PE has successfully deployed capital through management services organizations—attorneys generally cannot be bound by noncompete agreements, eliminating a cornerstone investor protection mechanism. This absence of enforceable noncompetes removes a key lever that private equity buyers routinely demand in purchase agreements to protect their investment thesis and incentivize partner retention.

To circumvent this constraint, PE sponsors are increasingly adopting dual-entity MSO architectures that separate legal practice from business operations. Under this model, the MSO entity controls non-legal services including billing, pricing, information technology, and administrative operations—functions that can be subject to standard noncompete and restrictive covenant requirements. This structure preserves ABA Model Rule 5.4 compliance, which prohibits fee-sharing arrangements between lawyers and non-lawyers, while allowing PE firms to establish operational control and protect their investment through the non-legal subsidiary. However, this approach leaves the core legal partnership—where rainmakers, relationship managers, and originating partners reside—outside the reach of enforceable noncompetes, creating unmitigated key-person risk.

The regulatory environment compounds these structural challenges. While Arizona, Utah, D.C., and Puerto Rico permit non-lawyer ownership or investment in law firms, California, Illinois, and Colorado are advancing explicit restrictions on PE involvement (2025–2026). This jurisdictional fragmentation forces deal structures to be tailored market-by-market, increasing complexity and limiting scalability—a critical concern given that most major law firms operate across multiple restrictive states.

According to market data, the U.S. legal services industry generates approximately $400 billion in annual revenue, yet remains one of the last major professional services sectors largely untouched by institutional capital. That dynamic is shifting. McDermott Will & Emery's November 2025 announcement that it was exploring restructuring to sell a stake to private equity investors signals BigLaw's entry into this capital wave. As PE participation accelerates, firms are now requiring explicit contractual buy-in from all significant rainmakers and relationship managers as a condition of investment—compensating, in part, for the inability to enforce traditional noncompetes.