Professional LLC

Not all states recognize the PLLC as a distinct entity type. Only 32 states and the District of Columbia currently authorize PLLC formation.

In states that do, licensed professionals are often prohibited from forming a standard LLC and must instead organize as a PLLC. The rules governing who qualifies and what requirements apply vary significantly by state, as legislators and state licensing boards have each shaped distinct frameworks for how licensed professionals may organize.

The core purpose of a PLLC is to give licensed professionals access to the liability protection and tax flexibility of an LLC while satisfying state-level regulations that govern how certain professions may be organized and operated.

How a professional LLC works

A PLLC is formed through the same basic process as a standard LLC: filing articles of organization with the state, designating a registered agent, and drafting an operating agreement. However, PLLCs face additional requirements that standard LLCs do not.

Most states require that all members of a PLLC hold an active license in the profession in which the entity is organized to practice. In many jurisdictions, non-licensed individuals, including investors or business partners, cannot hold membership interests in a PLLC.

Some states also require proof of licensure as part of the formation filing, or mandate approval from the relevant professional licensing board before the PLLC can be registered. The specific profession covered by the PLLC is typically stated in the articles of organization, and the entity is generally restricted to practicing only that profession.

Why a professional LLC matters

For licensed professionals, operating without the correct business structure can create legal and regulatory exposure. Practicing through an improperly formed entity may violate state licensing laws—violations can result in license suspension, civil fines, or contract invalidation, potentially jeopardizing a professional's license or the entity's legal standing; an industry analysis found that 43% of board matters led to action against a clinician's license.

A PLLC also provides personal liability protection for business debts and general claims, meaning a member's personal assets are generally shielded from the entity's liabilities. However, a PLLC does not protect a professional from personal liability arising from their own malpractice or professional negligence. With 11,440 malpractice claims totaling $4.8 billion reported in 2023, that distinction is critical.

From a tax perspective, a PLLC is treated the same as a standard LLC by the IRS. It can be taxed as a sole proprietorship, partnership, S corporation, or C corporation, depending on the number of members and elections made.

Common uses and examples of a professional LLC

PLLCs are most commonly used in fields where state law mandates a specific entity type for licensed practitioners. Examples include:

• Medical practices. A group of physicians forming a practice together—representing just 35.4% of physicians who retained practice ownership in 2024—may be required to organize as a PLLC rather than a general LLC, often due to corporate practice of medicine laws that prohibit unlicensed entities from owning medical practices—a doctrine states continue to strengthen through recent legislation, including California's SB 351, signed in October 2025.
• Law firms. Attorneys in many states must use a PLLC (or a professional corporation) when forming a multi-member practice entity.
• Accounting firms. CPAs forming a shared practice often use a PLLC to comply with state board of accountancy requirements.
• Architecture and engineering. Design professionals in states that restrict standard LLC formation for licensed practitioners frequently rely on the PLLC structure.

In each case, the PLLC allows the professionals involved to operate as a formal business entity while remaining compliant with their state's licensing and regulatory framework.

Key characteristics of a professional LLC

Several features distinguish a PLLC from a standard LLC.

• Member licensing requirements: All or most members must hold an active professional license in the relevant field.
• Restricted ownership: Non-licensed individuals are typically barred from membership, limiting outside investment—a restriction that directly intersects with the rise of private equity in physician practices, which grew from 4.5% to 6.5% between 2022 and 2024.
• Profession-specific scope: The PLLC is generally limited to practicing the profession named in its formation documents.
• State-specific availability: Not every state authorizes PLLCs. Some states use alternative structures, such as professional corporations (PCs) or professional associations (PAs), for the same purpose.
• Malpractice liability: Personal liability for professional malpractice is not eliminated by the PLLC structure. Members remain personally liable for their own negligent acts—a significant exposure given that 99% of high-risk specialty physicians face a claim by age 65, according to a New England Journal of Medicine study.

Professional LLC vs. standard LLC

The primary difference between a PLLC and a standard LLC is who can form one and for what purpose. A standard LLC is available to virtually any business owner and imposes no licensing requirements on its members. A PLLC is restricted to licensed professionals in designated fields and carries additional regulatory obligations.

Both structures offer limited liability protection and pass-through taxation. However, a standard LLC does not satisfy the legal requirements that many states impose on licensed professionals. A licensed professional who forms a standard LLC in a state that requires a PLLC may be operating out of compliance with state law.

Considerations and limitations

State law governs every aspect of PLLC formation and operation, and requirements differ substantially across jurisdictions. Before forming a PLLC, it is important to confirm whether the state where the business will operate recognizes the PLLC structure and what specific rules apply to the relevant profession.

Some states do not use the term "PLLC" at all, 22 states do not allow PLLC formation, and may instead require licensed professionals to form a professional corporation (PC) or use another designated entity type. Checking with the applicable state licensing board, in addition to the Secretary of State's office, is an important step in the formation process.

An operating agreement is a foundational document for any LLC, including a PLLC. It should address membership eligibility, what happens if a member loses their professional license, and how the entity will be managed. Because PLLCs often involve multiple licensed professionals, a well-drafted operating agreement is particularly important for preventing disputes.

Related terms and next steps

Understanding how a PLLC fits within the broader landscape of LLC structures helps clarify when and why it applies. The following related concepts are useful for anyone evaluating this entity type:

• Domestic limited liability company (LLC). It covers the foundational LLC structure that the PLLC is modeled on
• Multi-member LLC. Relevant for licensed professionals forming a group practice with multiple members
• Single-member LLC. Applicable when a solo practitioner is evaluating whether a PLLC or single-member structure is appropriate
• Operating agreement for an LLC. An essential document for any PLLC, particularly those with multiple licensed members
• Professional license. Explains the licensing requirements that typically trigger the need for a PLLC rather than a standard LLC

Licensed professionals considering a PLLC should verify their state's specific requirements and consult with a business attorney to confirm the correct entity type for their profession. LegalZoom's LLC formation services and attorney consultation options can help professionals navigate the formation process.

FAQs about professional LLCs

What happens to a PLLC if one of its members loses their professional license?

The consequences depend on the state and what the operating agreement specifies. Most states require that all members maintain active licensure, so a member who loses their license may be required to forfeit their membership interest or be removed from the entity. This is one of the primary reasons a well-drafted operating agreement is particularly important for PLLCs, as it should establish a clear process for handling exactly this situation before it arises.

Can a non-licensed investor or business partner hold an ownership stake in a professional LLC?

In most states that authorize PLLCs, non-licensed individuals are prohibited from holding membership interests, which effectively bars outside investors from taking an equity position in the entity. This restriction is one of the more significant practical limitations of the PLLC structure compared to a standard LLC, where ownership is generally open to any individual or business entity.

Is a PLLC taxed differently than a standard LLC?

The IRS does not treat a PLLC as a distinct tax classification. It is taxed under the same rules that apply to standard LLCs, meaning it can be taxed as a sole proprietorship, partnership, S corporation, or C corporation, depending on the number of members and any elections the entity makes. The tax treatment is determined by the entity's structure and elections, not by the "professional" designation.

What entity type should a licensed professional use in a state that does not allow PLLC formation?

In states that do not authorize PLLCs, which accounts for 22 states, licensed professionals are typically required to use a professional corporation (PC) or professional association (PA) instead, and the specific requirement varies by both state and profession. Confirming the correct entity type requires checking with the applicable state licensing board, not just the Secretary of State's office, since licensing boards often impose requirements that go beyond what general business formation statutes address.

Does forming a PLLC protect a professional from personal liability for their own malpractice?

No, a PLLC shields members from personal liability for the entity's general business debts and the malpractice of other members, but each professional remains personally liable for their own negligent acts or professional errors. This distinction matters significantly in high-risk fields: a physician or attorney operating through a PLLC is still fully exposed to personal liability for claims arising from their own professional conduct.

Can a solo practitioner form a single-member PLLC, or is the structure only available to group practices?

A single licensed professional can form a PLLC as its sole member in states that authorize the structure, and many solo practitioners do so specifically to separate business liabilities from personal assets while complying with state licensing requirements. The same formation rules apply; the member must hold an active license in the profession the PLLC is organized to practice, and the entity is still restricted to that profession's scope of services.