The owner of a law firm is most often called a partner, but the correct title depends on how the firm is legally organized. Attorneys who incorporate are shareholders, those who form a limited liability company are members, a lawyer practicing alone is a sole proprietor, and some boutique firms use principal. Each title says something different about ownership, liability, and how the firm is run.
Partner
Partner is the traditional ownership title and the one most people recognize. A partner holds an ownership stake, shares in the firm’s profits, and has a voice in how the firm is run. In a general partnership, each partner is personally on the hook for the firm’s debts, which means a creditor could reach a partner’s personal savings, home, or other assets to satisfy a business obligation.
Because of that exposure, most multi-lawyer firms today organize as limited liability partnerships. An LLP shields each partner from liability for the mistakes or debts of the other partners while still letting the firm operate as a partnership for tax and governance purposes.1U.S. Small Business Administration. Choose a Business Structure
For tax purposes, a partnership does not pay income tax itself. The firm files an informational return and issues a Schedule K-1 to each partner reporting their share of income, which the partner then reports on a personal return.2Internal Revenue Service. Partnerships A partner’s share is treated as self-employment income under federal law.3Office of the Law Revision Counsel. 26 U.S. Code 1402 – Definitions
Equity vs. Non-Equity Partner
Not every attorney with “partner” on the door actually owns a piece of the firm. An equity partner has a true ownership interest. They contribute capital, share in profits and losses, and vote on major firm decisions. Capital contributions vary widely: smaller firms may require nothing upfront, while large national firms can expect $100,000 or more. When an equity partner eventually leaves, that capital is returned, either in a lump sum or through installments.
A non-equity partner carries the title but typically receives a fixed salary rather than a share of profits and has limited or no voting power over firm governance. The distinction matters for compensation, for recruiting, and for how the firm presents its leadership to clients.
Shareholder
When a law firm is organized as a professional corporation, its owners are called shareholders. A professional corporation limits stock ownership to licensed attorneys: you cannot hold shares unless you are authorized to practice law in the relevant jurisdiction. Shareholders receive stock certificates that formalize their ownership interest and determine how dividends are distributed.
The tax treatment is different from a partnership. Officers of a corporation are treated as employees under federal tax law, so shareholder-attorneys receive W-2 wages and the firm withholds payroll taxes.4Office of the Law Revision Counsel. 26 USC Subtitle C – Employment Taxes Many professional corporations elect S-corporation status by filing Form 2553, which lets the firm’s income pass through to shareholders’ personal returns and avoids the double taxation of a standard C-corporation.5Internal Revenue Service. S Corporations
Member
In a professional limited liability company, or PLLC, the owners are called members. An operating agreement sets out each member’s ownership share, voting rights, and responsibilities. Members get pass-through taxation by default, so the firm’s income is taxed only once, on each member’s individual return, rather than at both the entity and individual level.5Internal Revenue Service. S Corporations
Member is also the title used by a solo attorney who forms a single-member PLLC rather than practicing as a sole proprietor. The structure creates a legal barrier between personal and business assets while preserving pass-through taxation.
Sole Proprietor
An attorney who practices alone without forming a corporation or LLC is a sole proprietor. This is the simplest ownership arrangement: no formation documents, no operating agreement, no co-owners. The lawyer has complete control over which cases to take and how to spend the firm’s money.
The tradeoff is full personal liability. There is no legal separation between the attorney and the business, so personal assets are exposed if the practice is sued or cannot pay its debts. A sole proprietor reports all business income and expenses on Schedule C, filed alongside the personal return,6Internal Revenue Service. About Schedule C (Form 1040), Profit or Loss from Business (Sole Proprietorship) and owes self-employment tax on net earnings.7Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) Because of that exposure, many solo lawyers form a single-member PLLC and take the title member instead.
Principal
Some firms, particularly specialized boutique practices, use the title principal for their lead owners. Functionally, a principal carries the same weight as an equity partner: they share in profits, contribute capital, and hold decision-making authority. The word choice is a branding decision that signals leadership without the older connotations of “partner.”
Principal also shows up in firms with mixed professional teams that include non-lawyer professionals such as consultants or lobbyists. In Arizona and Utah, the two jurisdictions that currently allow non-lawyers to hold ownership interests in legal practices, this title may be used for owners who are not licensed attorneys. Arizona eliminated traditional restrictions on law firm ownership in 2021, and Utah operates a regulatory sandbox that permits various service models.
Managing Partner
Managing partner is a leadership role layered on top of ownership rather than a separate kind of owner. This is the person responsible for running the business side of the firm: hiring, office operations, budgets, technology, and strategic direction. The managing partner is typically elected by the other partners and serves a set term, often three to six years.
A managing partner usually holds the same ownership stake as the other equity partners but takes on administrative duties in exchange for the leadership role. They often chair an executive or management committee that sets compensation and approves major expenditures. Depending on the firm’s legal structure, the equivalent title may be managing member or president, but the function is the same.
What “Of Counsel” Is Not
Some senior-sounding titles at a law firm do not signal ownership. The most commonly misunderstood is “of counsel,” which describes an attorney with a close, ongoing relationship with the firm who is neither a partner nor a junior associate. The American Bar Association has identified four types of of counsel relationships: a part-time practitioner affiliated differently from full-time lawyers; a retired partner available for consultation; a lateral hire on a trial track toward partnership; and a permanent role between partner and associate with no expectation of promotion.8American Bar Association. Formal Opinion 90-357
An of counsel attorney does not own a share of the firm, does not contribute capital, and is not personally responsible for the firm’s debts. Other non-ownership titles include senior counsel, staff attorney, and associate, each describing an employment relationship rather than an ownership stake.
Who Is Allowed to Own a Law Firm
In most of the United States, only licensed attorneys can hold an ownership title at a law firm. Professional conduct rules adopted in nearly every state prohibit lawyers from sharing fees with non-lawyers and from forming partnerships with non-lawyers for the practice of law. A non-lawyer also cannot hold an ownership interest in a professional corporation or association authorized to practice law. These rules exist to protect the independent judgment of lawyers and prevent outside business pressures from influencing legal advice.
Arizona and Utah are the only states that have created formal exceptions, with a handful of others exploring similar programs. Everywhere else, every ownership title — partner, shareholder, member, principal — belongs to a licensed attorney.