What a Professional Corporation Is
A professional corporation is an ordinary corporation with two conditions attached. It exists to provide a service that can only be provided under a license. And its owners have to hold that license. Everything else about it works the way any corporation works: the board, the officers, the stock, the annual filings.
California's definition is a useful anchor because it is precise, and it sits at Corporations Code section 13401. Professional services means any type of professional services that may lawfully be rendered only pursuant to a license, certification or registration authorized by the Business and Professions Code, the Chiropractic Act or the Osteopathic Act.
A professional corporation, in subdivision (b) of that section, is a corporation organized under the General Corporation Law. It is engaged in rendering professional services in a single profession, pursuant to a certificate of registration issued by the governmental agency regulating that profession. And it designates itself as a professional or other corporation as required by statute.
Two phrases in that definition do most of the work. Single profession is why a medical practice and a law practice cannot share one entity in most states. Certificate of registration issued by the governmental agency regulating the profession is the licensing board layer. That is the part that turns a two-day filing into a two-month one.
The professions involved are the predictable list, though it varies more than people expect. Physicians and dentists, lawyers, accountants, architects and engineers. Veterinarians, psychologists and licensed therapists. Chiropractors, optometrists, pharmacists, nurses in several states, and land surveyors. Does your work require a state license to do lawfully? Then assume the professional entity rules apply until you have checked otherwise.
PC and PLLC, and Which States Allow Which
The two forms do the same job on different chassis. A professional corporation is a corporation with ownership restrictions. A professional limited liability company is an LLC with the same restrictions. Which one you may use is a state question. Settle that first.
New York offers both. A professional service corporation is formed under Article 15 of the Business Corporation Law. A professional service limited liability company is formed under Article 12 of the Limited Liability Company Law. Both carry the same personal-liability rule and the same licensing certificate requirement.
California effectively offers only the corporate route for most professions. Its limited liability company act sets a condition. A company may render services that may lawfully be rendered only under a license, certificate or registration authorized by the Business and Professions Code, the Chiropractic Act, the Osteopathic Act or the Yacht and Ship Brokers Act.
But it may do so only if those provisions themselves authorize a limited liability company to hold that license. For the great majority of licensed professions they do not. That is why California practices are corporations, or, in five specified professions, limited liability partnerships.
Texas runs a single title covering professional associations, professional corporations and professional limited liability companies. It applies one ownership rule across them, at Business Organizations Code section 301.007. A person may be an owner of a professional entity, or a governing person of a professional limited liability company, only if the person is an authorized person. Section 301.004 says that means an individual licensed to provide the same professional service, or an organization of such people.
State fees for the professional forms usually track the ordinary entity fees. Our fee data puts professional LLC formation at $70 in California, $110 in Delaware, $125 in Florida, $150 in Illinois, $200 in New York and $300 in Texas. The board fees sit on top. The board sets those, not the Secretary of State.
Still deciding whether a licensed practice needs a professional entity at all? Then read the professional services entity page for the threshold question, and the medical practice page for one of the strictest verticals.
The Licensing Board Step That Sits Before the Filing
This is the step that turns an ordinary formation into a professional one. It is also the step most first-time filers get out of order.
New York is the clearest statutory example. The articles of organization of a professional service limited liability company must have certificates attached. Those come from the licensing authority, or from the comparable authority of another state. They certify that each of the proposed members and managers who are individuals is authorized by law to practice a profession that the company is being formed to practice. The certificate is not a formality that follows the filing. It is an attachment to it. Without it the filing does not proceed.
California takes a different route, and it is worth reading carefully. The exception swallows a lot of the rule. Its definition of a professional corporation refers to a certificate of registration issued by the governmental agency regulating the profession. It then provides that a professional corporation rendering services by persons licensed by a specific list of boards is not required to get one.
That list includes the Medical Board of California, the Podiatric Medical Board, the Osteopathic Medical Board, the Dental Board and the Dental Hygiene Board. It includes the State Board of Pharmacy, the Veterinary Medical Board, the California Architects Board and the Court Reporters Board. It includes the Board of Behavioral Sciences, the Board of Registered Nursing, the State Board of Optometry and the California Board of Occupational Therapy. So a California psychologist and a California accountant face different paperwork for the same structural decision.
So the practical sequence runs like this. Identify your board. Ask that board what it requires for the entity, rather than for you personally. Get whatever certificate or consent it issues. Only then file. Add the name rules to that, which the board usually controls rather than the Secretary of State. A name that clears the state's availability search can still breach a board's advertising rule. You only discover that conflict by asking the board.
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We prepare it, file it with the agency, and confirm it came back accepted. Or keep reading and file it yourself; this guide covers both.
Who May Own Shares, and What Happens on Death
The ownership restriction is the defining feature of the form and the source of most of its planning problems.
Texas states the rule without qualification. A person may be an owner of a professional entity, or a governing person of a professional limited liability company, only if the person is an authorized person. An authorized person is an individual licensed to provide the same professional service the entity renders, in that state or another jurisdiction. It can also be an organization of such individuals. Most states express the same idea in their own words.
Three consequences follow, and none of them are obvious until you meet them.
You cannot leave the practice to your family. A spouse or a child who does not hold the same license cannot hold the shares. On death or disqualification of a shareholder, states typically require the shares to be redeemed by the corporation. Or transferred to another licensed practitioner inside a short statutory window. Without a funded buy-sell agreement, that redemption lands on the practice at the moment it is least able to pay it.
You cannot bring in an outside investor. Passive capital from a non-licensed party is not available through equity in most professional entities. That pushes financing toward debt, toward a management services structure, or toward a state that permits a different arrangement.
You cannot mix professions casually. The single-profession limit means a physiotherapist and a physician often cannot co-own one entity. That holds even where they practice from the same premises.
All three point in the same direction. The governing documents matter more in a professional entity than in an ordinary one, because the statute has already removed the flexible answers. The bylaws guide covers the corporate version. And the operating agreement guide covers the PLLC version, including the transfer and buyout clauses that carry the weight here.
The Shield Does Not Cover Your Own Malpractice
This is the single most misunderstood point about the form. The statutes are not ambiguous about it.
New York, for the professional service corporation: each shareholder, employee or agent shall be personally and fully liable and accountable for any negligent or wrongful act or misconduct committed by him, or by any person under his direct supervision and control, while rendering professional services on behalf of the corporation.
New York again, for the professional service limited liability company: each member, manager, employee or agent shall be personally and fully liable and accountable for any negligent or wrongful act or misconduct committed by him or her. The wording is deliberate. It is the same wording in both statutes.
Texas approaches it from the entity side and lands in the same place. A professional entity is jointly and severally liable for an error, omission, negligent or incompetent act, or malfeasance. That covers acts committed by a person who is an owner, managerial official, employee or agent of the entity while providing a professional service. The practitioner who committed the act is not relieved of anything by that provision. What the statute adds is that other owners are not subject to the same liability.
Read together, the position is straightforward. Forming a PC or a PLLC does not reduce your exposure to a claim arising from your own work by one dollar. Professional liability insurance is the instrument that does that. The entity is not a substitute for it. Some states make the point structurally by requiring insurance as a condition of the form. That is why California requires a registered limited liability partnership to maintain specified levels of cover.
What the Entity Does Protect You From
Having said what it does not do, here is what it does. The form is genuinely worth having.
Your partners' mistakes. This is the main event. Texas states it directly. An owner, managerial official, employee or agent of a professional entity, other than the one liable for the act, is not subject to the same liability imposed on the entity. In a four-partner practice, a claim arising from one partner's work reaches the practice and that partner. It does not reach the other three personally.
Ordinary business debts. The premises lease, the equipment finance, the supplier accounts, and the employment claims that are not about clinical or professional judgment. These are corporate obligations, and the ordinary liability shield applies to them. Any personal guarantee you signed is a separate matter entirely.
A structure for tax and succession. The entity gives you a share ledger, a valuation framework, and a mechanism for admitting and retiring partners. It is also the vehicle through which an S corporation election is made. For many practices that is the reason the corporate form was chosen at all. The Form 2553 guide covers the election, and what an S corporation is covers the tax treatment.
Do none of those benefits apply to your situation? Then the ordinary forms may be the better answer. Read the LLC and C corporation comparison, what an LLC is and the partnership forms comparison for the alternatives.
Five Mistakes in Forming a Professional Entity
Mistake 1: Filing with the state before the board has issued anything
What happens. The articles go in on the assumption that the board approval is a later formality. Why it fails. New York requires the licensing authority's certificate to be attached to the articles of organization of a PLLC. Consequence. The filing is rejected. The name may be taken in the meantime, and any start date the practice was working toward moves. Prevention. Ask the board what it requires before you draft anything.
Mistake 2: Forming an ordinary LLC for a licensed practice
What happens. A practitioner forms a standard LLC because it was cheaper and faster. Why it fails. California permits an LLC to render licensed services only where the licensing statute itself authorizes an LLC to hold that license. For most professions it does not. Consequence. A disciplinary issue with the board, on top of an entity that may not be able to hold the license. Prevention. Confirm the permitted forms with the board first.
Mistake 3: No funded buy-sell agreement
What happens. Shares are issued to two or three licensed owners. Nothing is written about what happens if one dies or loses their license. Why it fails. Unlicensed heirs cannot hold the shares, so a redemption becomes compulsory on a statutory timetable. Consequence. The practice has to find the redemption price from cash flow, often in the same quarter it lost a producer. Prevention. Agree the valuation method and fund it, usually with insurance.
Mistake 4: Treating the entity as a substitute for malpractice cover
What happens. A practitioner reduces or drops professional liability cover after incorporating. Why it fails. Every professional entity statute preserves personal liability for the practitioner's own negligent or wrongful acts. Consequence. A claim reaches personal assets that the owner believed were protected. Prevention. Carry the cover. Check whether your state or board requires a minimum level of it.
Mistake 5: Putting two professions inside one entity
What happens. Two practitioners in related but separately licensed fields co-own a single practice entity. Why it fails. Most states restrict the professional entity to a single profession, and restrict ownership to holders of that license. Consequence. The entity is defective, and a board can treat the arrangement as unlicensed practice. Prevention. Use separate entities with a written services arrangement between them.
Three Practices and the Entity Each One Used
Example 1: A physical therapy practice that filed before asking the board
Harrow Street Physical Therapy PLLC filed articles of organization in New York in 2024. The licensing authority certificate was not attached. The filing was rejected. Getting the certificate, refiling, and getting the entity in place before the lease commencement date took nine weeks. The practice paid $8,600 in rent on premises it could not yet operate from, plus $2,200 in additional professional fees. The certificate itself cost a fraction of that, and could have been requested first.
Example 2: An architecture practice with no buy-sell agreement
Vance and Lindley Architecture PC in San Diego was owned equally by two licensed architects. There was no buy-sell agreement and no key person cover. When one died unexpectedly in 2023, his shares could not pass to his widow, who held no architecture license. The corporation had to redeem them.
The valuation was disputed. The redemption settled at $265,000, against a practice with $61,000 in cash. The surviving partner borrowed the difference over five years, at a rate that cost an additional $38,000 in interest. A funded agreement would have cost a few thousand dollars a year in premiums.
Example 3: A dental group that used the structure correctly
Northgate Dental Arts PC is a three-dentist practice in Fort Worth. It formed as a professional corporation with all three owners licensed. It adopted bylaws with a redemption formula and cross-purchase insurance funding it. And it carried professional liability cover at the level its carrier recommended, rather than the minimum.
In 2025 a claim arising from one associate's treatment reached the practice and that practitioner. The other two owners were not personally exposed. The insurer handled the defense, and the practice continued trading through it. The structural work had been done two years earlier and cost $6,400.
File the right way, the first time.
We prepare it, file it with the agency, and confirm it came back accepted. Or keep reading and file it yourself; this guide covers both.
What Happens When the Wrong Entity Is Used
Three separate consequences, and they arrive from three different directions.
From the state: a rejected filing, a delayed start, or an entity that has to be converted or refiled. From the board: a compliance issue that sits on your license record rather than on the company's. That is the more serious of the two, because it follows the individual. From a claimant: an argument that the shield does not apply, because the entity was not validly formed for the purpose it was used for.
| Step | Cost of doing it properly | Cost of getting it wrong |
|---|---|---|
| State formation filing | $70 to $300 in state fees | Refiling, plus the delay |
| Licensing board certificate | A board fee and a short wait | A rejected filing and a moved start date |
| Buy-sell agreement, funded | Drafting plus an annual premium | A forced redemption from cash flow |
| Professional liability cover | An annual premium | Personal exposure to the full claim |
The Vance and Lindley case above is the honest figure. A $265,000 redemption obligation landed on a practice holding $61,000, plus $38,000 of interest. A document that was never drafted caused it. The entity had been formed correctly. The planning that the entity form makes necessary had not been done at all.
Once the practice is running, the compliance calendar is the same as any other entity. You need an agent on file, covered in the registered agent guide, which varies by state as set out in the state requirements page. You need an annual report. And you need a certificate of good standing whenever a hospital, insurer or landlord asks for one. When a practice is closed or sold, the dissolution sequence applies, with the board notification added on top.
Frequently Asked Questions
What is a professional corporation?
A corporation formed to render a service that may lawfully be provided only under a license, and owned by people who hold that license. California defines professional services as any type of services that may lawfully be rendered only pursuant to a license, certification or registration. Those come under the Business and Professions Code, the Chiropractic Act or the Osteopathic Act. It then defines the professional corporation as one engaged in rendering those services in a single profession.
What is the difference between a PC and a PLLC?
The underlying entity. A professional corporation is a corporation. A professional limited liability company is an LLC. Which one is available to you depends on the state and on your profession. New York offers both, with a PLLC formed under Article 12 of its Limited Liability Company Law. California generally does not permit an LLC to render licensed professional services, unless the licensing statute expressly authorizes an LLC to hold that license.
Do I need approval from my licensing board before I file?
In many states, yes, and the order matters. New York requires the articles of organization of a professional service limited liability company to have a certificate attached. It comes from the licensing authority, and certifies that each proposed member and manager who is an individual is authorized by law to practice the profession the company is being formed to practice. Filing first and asking the board afterwards is how these applications get rejected.
Can a non-licensed person own shares in a professional corporation?
Generally no. Texas provides that a person may be an owner of a professional entity, or a governing person of a professional limited liability company, only if the person is an authorized person. That means someone licensed to provide the same professional service. That rule is what stops outside investors, spouses and adult children from holding shares in a practice, unless they hold the same license.
Does a professional corporation protect me from a malpractice claim?
Not from your own. New York states it plainly for both forms. Each shareholder, member, manager, employee or agent is personally and fully liable and accountable for any negligent or wrongful act or misconduct committed by that person. The same applies to acts by anyone under their direct supervision and control, while rendering professional services on behalf of the entity. The entity is not a substitute for professional liability insurance.
So what does the entity actually protect?
Two things. It shields you from the malpractice of your co-owners. And it shields personal assets from ordinary business debts, such as the lease, the equipment finance and trade payables. Texas puts the first of those in statute. The professional entity is jointly and severally liable for a practitioner's error, and an owner other than the one who committed it is not subject to that same liability.
Do I have to register the corporation with my board as well as the state?
It depends on the profession and the state. California requires a certificate of registration from the agency regulating the profession as part of its definition of a professional corporation. It then exempts a long list of boards from that certificate requirement. The list includes the Medical Board of California, the Dental Board, the State Board of Pharmacy, the Veterinary Medical Board, the California Architects Board and the Board of Registered Nursing. Check your own board rather than assuming either way.
Next steps: the professional services entity page covers the threshold question, the organizer and agent page covers who signs the formation document, and our formation service handles the filing itself.
This guide is written from the official sources below. Fees, forms, and deadlines change. Confirm the current requirement with the agency before you file.
- California Corporations Code section 13401
- California Corporations Code section 17701.04
- New York Limited Liability Company Law sections 1203 and 1205
- New York Business Corporation Law section 1505
- Texas Business Organizations Code sections 301.007 and 301.010
- U.S. Small Business Administration, Choose a business structure
Disclosure. File.Business is a private filing service, not a government agency and not a law firm. We prepare and submit filings at your direction, and nothing on this page is legal or tax advice. Filing fees, deadlines, and statutory references are current as of the last-updated date shown above and can change. Confirm current requirements with the relevant state agency before you file.
