Legal MSOs and ABA Rule 1.17: Why Most Transactions Are Structured to Avoid It

Takeaways

• Legal MSO structures allow law firms to access capital and operational support while preserving attorney ownership, client relationships, and independent professional judgment.
• The legal MSO model closely mirrors healthcare MSO structures, separating professional services from business operations while navigating professional practice restrictions.
• As legal MSOs gain traction, successful transactions require careful structuring to address corporate, regulatory, and legal ethics requirements.

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The legal industry is in the early stages of a transformation that has already occurred in other professional services sectors. Law firms are increasingly exploring new ways to access capital, improve operational efficiency, address succession challenges, and create long-term growth opportunities. As a result, legal management services organization (MSO) structures have attracted significant attention from law firm owners, investors, consultants, and legal industry advisors. One of the more common questions raised when discussing legal MSO transactions is whether they implicate ABA Model Rule 1.17, which governs the sale of a law practice. The answer is generally “no” because, in most cases, legal MSO transactions are intentionally structured to avoid Rule 1.17 altogether.

Understanding Rule 1.17

ABA Model Rule 1.17 was designed to facilitate the orderly sale of a law practice while protecting client interests. Not every state in the country has adopted some form of the ABA model rule, with Texas, Alabama, and Louisiana being the only states that have not adopted it in any form. The rule generally permits a lawyer or law firm to sell a practice or an area of practice to another lawyer or law firm, provided certain requirements are met, namely, that the selling lawyer must stop practicing in the practice area being sold (or stop practicing entirely, depending on the jurisdiction’s version of the rule). Among other things, the rule is intended to ensure that clients retain the ability to choose their counsel, that confidentiality is preserved, and that the transaction does not negatively affect the quality of legal representation.

Traditionally, Rule 1.17 applies in situations where a lawyer retires, exits a practice area, or otherwise transfers an existing practice to another lawyer. At first glance, many legal MSO transactions may appear similar. Investors often provide substantial capital, founders may receive significant liquidity, and long-term contractual relationships are established between the law firm and the MSO. However, the legal theory supporting these transactions is fundamentally different.

The Core Premise of the Legal MSO Model

Most legal MSO transactions are built around a simple premise: The investor is not acquiring the law practice. Instead, the investor acquires or invests in a separate management company that provides administrative and operational services to the law firm. The law firm remains owned by licensed attorneys and continues to control the attorney-client relationship, legal strategy and professional judgment, legal fees, legal work product, and ethical and professional obligations.

The MSO, on the other hand, may provide services such as marketing, client intake, human resources, accounting and bookkeeping, information technology, billing and collections support, real estate and facilities management, administrative personnel, and business operations support.

Under this framework, the law firm continues practicing law while the MSO functions as a business services platform. Because the law practice itself is not being sold, proponents of this structure argue that Rule 1.17 is not implicated.

Why Rule 5.4 Often Receives More Attention

For lawyers evaluating these transactions, Rule 1.17 is often not the primary ethics concern. Instead, the focus typically shifts to Rule 5.4 and related state-law restrictions concerning fee splitting with non-lawyers, non-lawyer ownership interests, professional independence, investor influence over legal services, and control rights and governance structures. The central question becomes whether the transaction preserves the attorney’s independent professional judgment while avoiding impermissible economic arrangements between lawyers and non-lawyers. As a result, much of the legal work in these transactions involves carefully structuring management agreements, compensation arrangements, governance rights, and operational relationships to ensure compliance with applicable ethics rules.

The Healthcare Analogy

One reason legal MSOs have gained traction is that many of the underlying concepts have existed in healthcare for decades. Healthcare MSO structures were developed to navigate corporate practice restrictions that limit ownership and control of professional medical practices. In a typical healthcare MSO structure, physicians own the professional entity while investors own a separate management company that provides administrative support. Many legal MSO transactions borrow heavily from that framework.

The parallels are difficult to ignore: The Physician-owned professional corporation becomes a lawyer-owned law firm. The healthcare MSO becomes a legal MSO. The focus on corporate practice restrictions changes to a focus on fee-splitting and professional independence restrictions. And management services agreements remain at the center of the structure. While the legal and regulatory frameworks differ, the business objectives are very similar.

Looking Ahead

The legal industry is facing many of the same pressures that have transformed healthcare and other professional services sectors: succession challenges, rising operating costs, increased competition, technology investments, and growing demands for scale and legal MSOs have emerged as a potential solution to those challenges. Whether they become a dominant industry model remains to be seen, but there is little question that these structures are gaining traction.

For potential sellers, investors, and industry participants, the most important takeaway should be that legal MSO transactions are not simply M&A transactions; they exist at the intersection of corporate law, professional responsibility, regulatory compliance, and business strategy, and it is vitally important that these parties work with counsel that understands these nuances.