If you start earning independent income outside of your primary employment as a physician, it likely won’t be long before someone says to you, “form an LLC.” But once you start researching types of business structures, that advice might seem overly simple.
Sermo polling reveals that physicians are split on who the LLC advice is right for. When asked at what level of annual 1099 income an LLC becomes “worth it,” the largest group (32%) believed it only makes sense if you are making more than $100,000 in side hustle income. Meanwhile, 16% of respondents think it’s worthwhile for any amount above $10,000. “Is the tax shield worth the extra paperwork, or is simplicity the ultimate luxury?” questions one family medicine doctor and Sermo member, “I don’t know enough to intelligently respond to this question.”
Technically, “Should I form an LLC?” is usually the wrong question for a doctor. Many states don’t allow physicians to form an LLC, but doctors can form a Professional LLC (PLLC) or are required to form a Professional Corporation (PC) or Professional Medical Corporation (PMC), depending on the state. Your best starting point is to determine what entity your state allows you to form, and whether you should elect S-corp taxation on top of it. Here’s what you need to know.
This article is for informational purposes only and does not constitute legal, tax or financial advice. State laws governing physician entities vary significantly. Consult a qualified attorney and a Certified Public Accountant (CPA) familiar with physician entity structures regarding your specific situation.
Why would physicians prefer operating as an LLC for their medical practice?
PLLC formation isn’t guaranteed to be worthwhile for everyone, according to a nephrologist on Sermo. “For many physicians, the real question isn’t how much you save, but whether the added complexity aligns with how you want to practice medicine and live your life,” they explain. “Simplicity has a return too.” A general practitioner feels similarly: “While operating through an LLC or S-Corp can unlock valuable tax advantages and liability protection, it also demands discipline, compliance, and administrative effort.”
When asked about their primary driver to incorporate, 31% of Sermo members cited liability protection, 23% pointed to tax savings and 19% highlighted business deductions. Indeed, PLLC or PC election is most useful when you’re aiming to achieve three goals: unlocking significant tax savings through an S-Corporation election, shielding personal assets from non-malpractice business liabilities and maximizing retirement contributions via a solo 401(k).
Tax savings (only with the S-corp election)
An important distinction that’s often misunderstood: A PLLC or PC by itself does not save tax dollars. Instead, they set up the legal eligibility for you to elect S-Corp taxation, which does save tax dollars. Without the S-Corp election, your net 1099 income is subject to the full 15.3% self-employment tax (12.4% Social Security up to the 2026 wage base of $184,500, plus 2.9% Medicare on all earnings). With an S-corp election, only the portion of income paid to you as a “reasonable compensation” is subject to payroll taxes, while the remaining profit distributions generally avoid the 15.3% self-employment tax.
Liability protection for non-malpractice business risk
Practice ownership exposes a physician to additional risks. Vendor disputes, employee claims, contract issues, a slip-and-fall in the waiting room and equipment lease disputes are all standard business risks. A properly maintained PLLC or PC limits that exposure to the entity’s assets. This legal barrier generally keeps your home, personal savings or other personal assets outside the reach of general business creditors. A PLLC or PC does not shield you from personal liability for your own medical malpractice.
Retirement contribution capacity
A physician operating through a PLLC or PC can open a solo 401(k), provided the practice has no full-time employees who must be covered by the plan. While employee salary deferrals are generally shared across all 401(k) plans, a solo 401(k) may allow additional employer contributions based on self-employment income. The combined 2026 employee plus employer contribution limit is $72,000. For a high-earning physician, this structure dramatically expands tax-advantaged savings capacity.
What is the difference between an LLC and a PLLC for physicians?
An LLC (Limited Liability Company) is a standard business structure, while a PLLC (Professional Limited Liability Company) is specifically designated for licensed professionals. Many states mandate that doctors form a PLLC or a Professional Corporation (PC) rather than a standard LLC to ensure professional accountability.
An LLC is a state-law business entity that separates the business from its owner for non-malpractice liability purposes while allowing flexible tax treatment. However, the LLC itself does not change how the IRS taxes the business. A single-member LLC defaults to being taxed as a sole proprietorship, while a multi-member LLC defaults to a partnership. Both can proactively elect to be taxed as an S-Corporation or C-Corporation.
Because medicine requires a specialized license, most states require physicians to form a PLLC or similar professional entity rather than a standard LLC. California represents the most restrictive environment, prohibiting both LLCs and PLLCs for physicians, requiring a Professional Medical Corporation (PMC) instead.
Where can physicians form a standard LLC in the United States?
In most cases, physicians cannot form a regular LLC in the U.S. Only a few states, such as Oregon, allow doctors to use a standard LLC. State requirements vary widely. Approximately 30 states require a PLLC, about 20 states mandate a Professional Corporation (PC), and California specifically requires a Professional Medical Corporation (PMC). Texas gives physicians the option to form either a PLLC or a Professional Association (PA), treating PLLCs differently for state franchise tax purposes. Before you dive into complex tax strategies, it’s best to confirm what entity your state actually permits.
Variations in state law create complexity for a locum tenens LLC or a telemedicine provider practicing across state lines. If you practice in multiple states, you’ll have to comply with each state’s professional entity rules, frequently requiring separate entity registrations.
State-level tax laws also vary. A Pass-Through Entity Tax (PTET) is an optional, entity-level tax available in many states. It can allow partnerships and S-Corps to pay state income tax on business income, legally bypassing the federal $10,000 SALT (State and Local Tax) deduction limit. Business owners receive a credit for this tax, reducing personal state tax liability and increasing overall federal tax benefits.
This can make business formation enticing, a general practice and orthopedic surgery physician on Sermo believes. “If you’re netting over $250,000, the potential $15,000–$20,000 in annual savings is hard to ignore, especially when paired with Pass-Through Entity Tax (PTET) strategies that finally let us bypass that frustrating $10,000 SALT cap in high-tax states,” they write.
How much can a physician save with an S-Corp tax election?
Exact savings will depend on your net income, the amount paid as a reasonable salary, state taxes, and added costs like payroll processing and tax prep. High-earning doctors can often save thousands of dollars annually by electing S-Corp taxation. “Paying a ‘reasonable salary’ and taking the rest as distributions can save tens of thousands of dollars,” confirms an intensive care specialist on Sermo.
What is the basic mechanism for physician self-employment tax savings?
Without the S-Corp election, your net 1099 income is classified as ordinary self-employment income, immediately triggering the full 15.3% self-employment tax. By making the S-Corp election, you technically become an employee of your own entity. Your income is then split into two distinct buckets: a reasonable W-2 salary and distributions. Only the salary, not the distributions, is subject to self-employment and payroll taxes. Depending on your reasonable salary, this can create tax savings compared to paying the full 15.3% if you don’t elect to form an S-corp.
At what income threshold does an S-Corp make sense?
CPAs often recommend making the S-Corp election once net 1099 income consistently surpasses $150,000 – $200,000, though the exact break-even point depends on salary, payroll costs, and state taxes. Below that income threshold, the added compliance costs—which include running payroll, filing a separate corporate tax return and bookkeeping—frequently consume the entirety of the tax savings. “I was told by an accountant years ago that he would charge $4K per year to administer the paperwork,” a psychiatrist reveals on Sermo.
What is ‘reasonable compensation?’
With an S-corporation, the IRS requires you to pay yourself a “reasonable” W-2 salary. This salary must accurately reflect what a similarly qualified physician would earn in the exact same role and geographic market. Attempting to pay yourself an artificially low salary just to maximize tax-free distributions can lead to an IRS audit. A physician-focused CPA can help benchmark this reasonable compensation based on your specific specialty.
When is the Form 2553 deadline?
To elect as an S-corporation you’ll need to file IRS Form 2553. You’ll need to submit the form within 75 days of the entity’s formation, or by March 15 of the tax year the election should apply to.
What changes operationally once you elect S-Corp status?
An S-Corp requires upkeep. You’ll need to run formal payroll, file a separate Form 1120S tax return, utilize a separate business bank account and maintain accurate financial books. “Compliance cost is real,” an internal medicine resident writes on Sermo. “This can easily offset marginal gains for moderate earners.”
Common misconceptions about PLLCs for doctors
It can be helpful to familiarize yourself with a few prevailing myths surrounding the physician business entity:
It won’t protect you from malpractice claims
A physician operating through a PLLC, PC, or any other corporate structure remains personally liable for their own clinical negligence. “Liability protection is often cited, but in medical practice, professional negligence liability isn’t fully shielded by a company structure anyway,” one internal medicine resident notes on Sermo.
Some Sermo members believe that forming a PLLC/PC offers additional meaningful protection in addition to malpractice insurance; others think the added benefit is negligible. In a poll, 37% said it offers meaningful protection, pointing to protection of personal assets from business creditors; 29% said it offers minimal added protection, since most incidents are covered by malpractice insurance and 20% said it doesn’t offer meaningful additional protection.
In a multi-member PLLC, the structure generally does not protect one medical partner from liability arising directly from another partner’s individual clinical negligence.
It won’t eliminate self-employment tax automatically
A standard PLLC alone will do little for your tax burden. The legal entity creates the structural eligibility; the S-Corp tax election creates the actual financial savings.
It doesn’t work if you fail to maintain it
Commingled personal and business funds, missed annual state filings and casual operational habits can undermine the entity. If a lawsuit occurs, plaintiffs can attempt “piercing the corporate veil.” If you’ve failed to treat the business like a distinct entity, the courts will not treat it as one either.
It doesn’t avoid QBI limitations
The IRS classifies medicine as a Specified Service Trade or Business (SSTB), leading to limitations around the Qualified Business Income (QBI) deduction. In 2026, those with taxable income between $394,600 and $494,600 (if filing jointly), and $197,300 and $247,300 (for all other returns) face limitations on the deduction. Those with taxable incomes exceeding those ranges aren’t eligible for the deduction at all. This applies whether you operate as a sole proprietor or an S-Corp.
What are the biggest mistakes physicians make with LLC formation?
When navigating PC vs PLLC physicians requirements, doctors sometimes make errors. The common mistakes include:
- Forming a standard LLC in a state that strictly requires a PLLC or PC (wasting filing fees)
- Forming an entity under the false assumption it acts as a shield against medical malpractice
- Missing the Form 2553 deadline, requiring you to wait a year or apply for a late election
- Electing S-Corp status prematurely, before 1099 income is high enough to justify the heavy compliance costs
- Setting an artificially low W-2 salary as an S-Corp owner, which can draw IRS scrutiny
- Commingling personal and business funds in a single checking account, weaken liability protection and increasing the risk of veil-piercing claims
- Skipping the creation of an accountable plan, thereby missing tax-free reimbursements for home offices and mileage
- Relying on a generalist CPA who lacks experience with physician-specific entity structures
- Using automated online filing services that fail to account for state medical board licensing requirements
- Neglecting mandatory annual state filings, resulting in the administrative dissolution of the business
Do physicians need a Certified Public Accountant (CPA) to form an LLC?
While you’re not legally required to hire a CPA to form an LLC, it tends to be a smart move. A physician-focused CPA ensures compliance with state-specific professional entity laws and helps accurately calculate specialty-specific reasonable compensation for S-Corp tax benefits.
While it is technically possible to file paperwork independently, the nuance of medical entities strongly warrants hiring professionals. An intensive care specialist on Sermo suggests “a great specialized medical CPA” rather than a generalist. State entity rules for physicians vary dramatically, and the IRS requirement for calculating reasonable compensation is specialty-specific.
Similarly, it is recommended to utilize an attorney who has a proven track record of forming medical entities. Many attorneys can generate a generic LLC, but fewer understand the intricacies of state professional licensing rules. Avoid online filing services that promote ten-minute formations. They can be adequate for non-professional entities, but physicians have specific compliance hurdles required by state medical boards.
As one physician specializing in diabetology suggested: “Doctors should consult a Certified Public Accountant (CPA) who has a specialization in TCP (Tax Compliance and Planning). Bookkeeping is a good habit even if one has no immediate plan of forming an LLC. It allows smooth transition in future.”
Optimize your physician business entity
As a physician, forming a PLLC, PC, or PMC can result in tax savings and non-malpractice liability protection. Your state laws determine exactly what entity you can form. The S-Corp election on top of business entity formation reduces self-employment taxes, provided your 1099 income exceeds the threshold where tax savings outweigh accounting fees.
Keep in mind that these structures secure your personal assets against business creditors, but they never replace medical malpractice insurance. Ultimately, a 30-minute consultation with a specialized medical CPA can clarify whether the benefits justify the required compliance for your specific situation.
While you navigate a transition to 1099 work, or wondering if your side gig justifies forming a PLLC, you can hear from physicians who have already taken the step. On Sermo, more than one million verified physicians compare notes on what actually works in practice. Join the conversation today to crowdsource recommendations for specialized CPAs, review peer feedback on business structures and get the insights you need to manage your finances with confidence.
