Here is the sentence most licensed professionals never read until they are already sued: your professional entity shields your personal assets from your partner's malpractice, but not from your own. If you are a doctor, lawyer, CPA, architect, or engineer practicing through a PLLC, the entity protects your house when your business partner commits malpractice. When you commit it, the plaintiff names you personally, and the PLLC changes nothing about that. The same rule applies to a plain LLC, a professional corporation, and every other structure your state offers. No filing fee buys your way out of liability for your own professional negligence.
That single fact reframes the whole PLLC-versus-LLC question. You are not shopping for malpractice protection, because neither entity sells it. You are satisfying your state's licensing rules, accepting ownership restrictions a regular business never faces, and setting up the tax posture that fits your income. This guide covers exactly that: which states force doctors, lawyers, and CPAs into a professional LLC, the ownership and malpractice-liability limits that come with it, and how PLLC and PC tax elections compare.
PLLC vs. LLC in One Minute
A limited liability company is the default small-business entity: pass-through taxation, flexible management, no board meetings or minutes, and limited liability for business debts. Anyone can own one, and members can split profits however the operating agreement says.
A professional limited liability company is the same chassis with guardrails bolted on for licensed practice. Tax treatment and day-to-day management closely resemble an LLC. What changes is eligibility and ownership: only licensed professionals can be members, usually all in the same profession; formation typically requires proof of licensure and sometimes pre-approval from your licensing board; the entity may practice only that profession; and the name must carry a designator such as PLLC. About thirty states plus the District of Columbia offer the PLLC form. Where your state mandates a professional entity, a plain LLC for your practice is not a cheaper alternative — it is a filing your board will not accept.
Which States Force Licensed Professionals Into a Professional Entity
States fall into three camps, and your camp decides the question before any tax or liability analysis begins.
States that mandate a professional entity
In these states, a licensed professional rendering professional services must organize as a PLLC, professional corporation, or registered LLP — not a plain LLC. New York requires licensed professionals in Education Law professions to practice through a PLLC, PC, or registered LLP. Texas restricts PLLC ownership and management to licensed professionals practicing the same service and bars the plain-LLC route for professional practice. Florida requires state-licensed professionals to form a PLLC rather than a standard LLC for their practice, and its Division of Corporations can reject a plain-LLC filing for a licensed field. Illinois similarly requires PLLC members and managers to be licensed in the profession the company practices. North Carolina follows the same pattern for its licensed professions.
The failure mode here is quiet and expensive: the secretary of state sometimes accepts the articles for a plain LLC, because that office does not check your license, and the problem surfaces only when your licensing board refuses to register the practice — or when a creditor argues you were practicing without a valid professional entity all along. File the board-compliant entity first.
States that let professionals use a plain LLC, with strings attached
A second group of states permits licensed professionals to organize as a regular LLC but layers profession-specific restrictions on top through the licensing statutes. The LLC works as a business entity, but unlicensed ownership, profit-sharing with non-professionals, or multi-profession practice that would be unremarkable for any other business can still violate your profession's rules. The permission to use the form is not permission to ignore the licensing regime. If your state is in this camp, your operating agreement needs to reflect the licensing restrictions even though the LLC statute itself does not impose them.
California: no LLC of any kind for licensed professionals
California is the famous outlier. Its Corporations Code bars licensed professionals — lawyers, doctors, accountants, architects, engineers, physical therapists, and others — from practicing through any LLC at all, professional or otherwise, because the state does not recognize the PLLC form. California professionals choose between a professional corporation and, for a few professions such as law and accounting, a registered limited liability partnership. If you practice in California and hold a multi-state structure, the California arm of the practice needs its own compliant entity; a PLLC formed elsewhere does not fix the California prohibition.
How to verify your state in fifteen minutes
Do not rely on a formation service's marketing page for this. The authoritative sequence is short: first, your state licensing board's published entity rules for your profession; second, the secretary of state's professional-entity filing instructions, which usually link back to the board; third, a call or email to the board asking two questions — which entity forms may my profession use, and must the board approve the filing before or after it goes to the secretary of state. Write down the answers with the date. Boards change rules, and a dated note of what the board told you is worth more than any blog post, including this one.
Ownership Limits: Who Can Own a Piece of Your Practice
The ownership rules are where professionals accustomed to regular LLCs feel the most friction, because every one of them exists to keep practice under licensed control.
Same-profession ownership is the default. In most PLLC states, every member must hold a license in the same profession the PLLC practices — all dentists, all attorneys, all CPAs. Mixing professions in one PLLC is prohibited in most states, which is the first thing multidisciplinary practices trip over: the physical therapy group that wants to add a physician partner, or the accounting firm eyeing an affiliated law practice, generally needs separate entities plus service agreements between them, not one shared PLLC.
Minority and temporary exceptions are narrow. Some states allow a small minority of non-licensed owners or permit a surviving spouse to hold a deceased member's interest temporarily until it is sold back. Treat every exception as state-specific and time-limited: the spouse's interest typically must transfer to a licensed professional within months, and some states require the entity to document the forced buyback in its governing documents from day one.
The single-purpose rule limits what the entity may do. A PLLC is generally organized solely to render the professional services its members are licensed for, plus activities incidental to that practice. Running an unrelated side business through the same PLLC — the dental practice that also wants to hold rental property — violates the rule in most states. Hold the real estate or side venture in a separate plain LLC.
Losing a license means losing membership. If a member's license is suspended, revoked, or surrendered, most states require that member's interest to be transferred or redeemed promptly, because an unlicensed owner violates the ownership statute every day it persists. Your operating agreement should spell out the trigger, the valuation method, and the payment terms before anyone needs them. The same clause should cover death and disability, since a membership interest that passes to an unlicensed heir creates the identical problem on a grief timeline.
New partners need new paperwork. Admitting a partner to a PLLC is not just an amended operating agreement. Expect to verify the incoming member's license and good standing, update the board registration, and in some states obtain board approval of the new ownership. Build weeks, not days, into any partner-admission timeline.
Malpractice Liability: What the Shield Covers and What It Does Not
This is the section to read twice, because the most common belief about professional entities is exactly backward. Organizing as a PLLC or PC never insulates you from claims arising from your own professional acts. State laws say so explicitly. Here is the full map:
Your own malpractice: full personal liability. When you commit professional negligence, the injured client sues you personally alongside the entity, and the entity changes nothing. Your defense is competence, documentation, and malpractice insurance — not the articles of organization. Budget for real coverage from the first client, and confirm whether your state or board sets minimum limits.
Your partner's malpractice: generally shielded. This is the protection the entity actually sells. If your PLLC co-member commits malpractice on a matter you never touched, supervised, or directed, your personal assets are normally out of reach, and the claim runs against the at-fault professional and the entity. The same shield covers malpractice by the firm's employees for which you bear no supervisory responsibility.
Supervision erases the shield. If you supervised, directed, or controlled the work that went wrong — the associate's brief you reviewed, the hygienist working under your license, the junior engineer stamping drawings you approved — you can be personally liable for that malpractice too. Senior professionals with review authority over others' work carry the widest exposure surface in the firm, which is another reason the partners with the most authority usually carry the highest policy limits.
Business debts and obligations: shielded, with the usual holes. Office leases, equipment loans, vendor contracts, and employment claims against the firm stay with the entity — unless you personally guaranteed the loan or lease, which landlords and lenders routinely require of small professional practices. A personal guarantee bypasses the shield by contract, so read every guarantee before signing and negotiate caps, burn-off clauses, or time limits where you can.
Your behavior can forfeit the shield. Courts pierce professional entities for the same reasons they pierce regular ones: commingled bank accounts, personal expenses run through the practice, undocumented owner draws, nonexistent records, and chronic undercapitalization. The liability shield only holds if the entity behaves like an entity. Separate accounts from day one, document every owner withdrawal as a draw or payroll payment, and reconcile the books monthly. A creditor's attorney exhibits commingling first and argues the law second.
Tax Elections: The Decision That Actually Moves Money
Entity choice determines what your state allows. Tax elections determine what you keep. The two decisions are independent: an S election never changes your state-law entity type, and forming a PLLC instead of a PC never elects anything with the IRS.
Default classifications. A single-member PLLC defaults to disregarded-entity status, reporting on Schedule C of your personal return. A multi-member PLLC defaults to partnership taxation, with income flowing through on Schedule K-1. Either way, every dollar of net earnings is generally subject to self-employment tax. A professional corporation defaults to C-corporation taxation at the flat 21 percent corporate rate — a posture almost no small practice keeps, because it layers corporate tax under the tax on getting money out to the owners.
The S election is where the planning lives. A PLLC or an eligible PC elects S-corporation taxation by filing Form 2553, generally no later than two months and fifteen days after the start of the tax year the election takes effect. As an S corporation, owner-employees take a reasonable W-2 salary subject to payroll taxes, and remaining profit passes through as distributions not subject to self-employment tax. The savings are real but not free: payroll administration, a defensible reasonable-salary analysis, and a separate S-corporation return all cost money, so the election pays off only once profits comfortably exceed what a reasonable salary for your role would be. Model it at your actual income with your CPA rather than adopting a rule of thumb from the internet.
Doctors, lawyers, and CPAs face the SSTB limits on the QBI deduction. The 20 percent qualified business income deduction under Section 199A is permanent, but specified service trades or businesses — expressly including health, law, and accounting — lose it above inflation-adjusted taxable-income thresholds. For 2026 the phase-out starts at $201,750 single and $403,500 joint, with expanded phase-out ranges of $75,000 and $150,000, so the deduction disappears entirely above $276,750 single and $553,500 joint. Below the thresholds, SSTB income qualifies like any other; above them, no entity choice restores it. High-earning practices should model pass-through-plus-QBI against S-election-plus-salary because the right answer flips as income crosses these lines.
State quirks can override the federal math. A handful of states do not fully recognize the S election and tax S corporations at the entity level. Others impose franchise taxes or professional-entity fees that dwarf the federal savings for small practices. Run the combined federal-plus-state model for every state where the practice is registered before filing anything.
The Formation Sequence, in Order
Expect more steps and more weeks than a plain LLC. The typical order:
- Confirm eligibility with your licensing board — entity forms allowed, ownership rules, and whether board approval comes before or after the state filing.
- Reserve and clear the name, including the required PLLC designator and any board naming rules. Some states require board sign-off on the name itself.
- Obtain board pre-approval or a certificate of good standing where required, with license numbers for every founding member.
- File articles of organization with the secretary of state and pay the filing fee, attaching licensure proof where the state requires it.
- Get an EIN, open practice bank accounts, and draft the operating agreement — including license-loss buyback terms, admission procedures, and any state-mandated provisions.
- Register with the board after formation if your state sequences it that way, and calendar every renewal: entity, licenses, and board registration all expire on different cycles.
- Foreign-qualify in every additional state where you practice, each with its own board registration. A PLLC formed in one state does not authorize practice in another.
Five Mistakes That Unwind the Whole Structure
Filing a plain LLC for a licensed practice. The most common error and the cheapest to avoid. Confirm the entity form with your board before paying any filing fee.
Mixing professions in one PLLC. One entity, one profession, in most states. Price the multi-entity structure before promising anyone a shared company.
Admitting an unlicensed co-owner. A non-professional spouse, investor, or key employee cannot hold PLLC membership in most states. If they need economics, structure it as employment compensation or a management arrangement your profession's fee-splitting rules permit — with counsel, not improvisation.
Skipping board registration after the state filing. The secretary of state's stamped articles are half the job in states that require separate board registration. An unregistered practice can face fines, and the gap complicates every later filing.
Assuming the shield covers malpractice. Restated because it is the costliest misunderstanding in this entire area: nothing about your entity choice reduces the malpractice coverage you need or your personal exposure for your own work.
Clean Books Are Part of the Liability Shield
Return to the veil-piercing point, because it is the one liability risk entirely within your control. Commingled accounts and unreconciled ledgers are the exhibits that dissolve a liability shield. The same discipline powers the tax side: an S election on top of sloppy books produces a return your CPA reconstructs at hourly rates, while clean books produce a return that practically writes itself. Separate the practice's money from yours on day one, run every owner withdrawal through documented draws or payroll, and reconcile monthly.
Plain-text accounting fits a professional practice well here: every transaction traceable, every balance reproducible, the whole ledger version-controlled. The Beancount documentation on getting started walks through the setup, and a ledger you can show an auditor without flinching is precisely the posture you want if your entity's separateness is ever questioned.
Run Your Practice on a Ledger You Can Defend
As you choose between a PLLC and an LLC and work through your state's ownership and registration rules, remember that the entity is only as strong as the records behind it. Beancount.io provides plain-text accounting that gives you complete transparency and control over your financial data — no black boxes, no vendor lock-in. Get started for free and see why developers and finance professionals are switching to plain-text accounting.
