Should a Locum Tenens Clinician Form an LLC?

No. A single-member LLC by itself produces zero federal tax savings for a locum tenens physician, CRNA, or AA. The IRS treats a one-owner LLC as a "disregarded entity" — in the IRS's own words, "an LLC with only one member is treated as an entity disregarded as separate from its owner" — so the income still flows to Schedule C of Form 1040 and is taxed in the same manner as a sole proprietorship, including the full 15.3% self-employment (SE) tax. Forming the LLC does not change your taxable income, your tax bracket, or your SE-tax bill by a single dollar.

The actual SE-tax lever is the S-corp election (Form 2553), which you can make on an LLC, PLLC, or PC later — once net 1099 income is high enough (often cited as roughly $200k+, though the break-even is fact-specific) that splitting a reasonable W-2 salary from distributions saves more in FICA than payroll and Form 1120-S compliance cost. The LLC is merely the legal vehicle that makes that election possible; it is not the savings. See the locum-tenens-s-corp guide for that analysis.

QBI/§199A does not rescue this either. Physicians, CRNAs, and AAs are a Specified Service Trade or Business (SSTB), and for 2026 the §199A deduction phases out above $201,750 single / $403,500 MFJ and reaches $0 above $276,750 single / $553,500 MFJ (Rev. Proc. 2025-32, reflecting the OBBBA-widened $75k single / $150k MFJ phase-in). Above those ceilings an entity creates no QBI deduction. Note that several otherwise-current CPA blogs still cite the stale pre-OBBBA $276,750 / $553,500 figures — those are outdated; use the $276,750 / $553,500 values.

No. An LLC or PLLC does not shield you from your own professional malpractice. This is the single most-misunderstood point about clinician entities, so lead with it: if you are sued for malpractice, your personal assets may still be at risk because you are the one providing the service and are personally liable for your own clinical actions. An entity cannot wall off your own negligence — that is an "inside risk" that follows the licensed individual.

What an entity does separate is "outside"/business liability that is not your personal clinical negligence — for example, a business contract dispute, a commercial lease, a business loan, or an employee's act — keeping those from reaching your personal assets, and vice versa. The only thing that addresses the malpractice exposure is a malpractice policy: occurrence coverage, or claims-made plus tail coverage when you leave an assignment. Do not form an LLC believing it replaces malpractice insurance; it does not.

A second caveat: even the "outside" liability shield is only as strong as your separation of funds. Commingling personal and business money, skipping the operating agreement, or failing to keep a dedicated business bank account invites "veil-piercing," where a court disregards the entity. The liability benefit is real but conditional on good housekeeping.

It depends on your state — and getting it wrong can void your liability protection or run afoul of your licensing board. A standard LLC is often not permitted for licensed clinicians under "corporate practice of medicine" (CPOM) rules, because state licensing boards must verify that each owner holds a license. There is no single national rule.

California is the clearest example: under Business & Professions Code §13401 and CPOM doctrine, it prohibits LLCs and PLLCs for medical practice entirely — physicians must use a Professional Corporation (PC) / medical corporation. New York and Texas are also strict CPOM states that bar a generic LLC and require a professional entity (a PC, or in New York a PLLC authorized by the Office of the Professions). Many states that do allow PLLCs require that professional form rather than a generic LLC. Because the requirement varies by state, confirm with a healthcare attorney licensed where you work and your state board before filing.

Multi-state work adds a layer. Locums often work across several states; you generally form the entity in your home/resident state, then register as a foreign entity in states where required. Some states impose an annual franchise or minimum tax — California's minimum franchise tax is $800 (with a first-year exemption for newly formed corporations). S-corp recognition and franchise taxes also vary by state, so factor ongoing per-state cost into the decision.

Often not — and this is the threshold question to answer before you spend anything on an entity. Many locum agencies will only contract with and 1099 the individual clinician, because credentialing is tied to your personal license, NPI, and SSN, not to a business. As SDO CPA advises locum clinicians: confirm with your locum agency whether they will contract with your PLLC or PC instead of you personally — some agencies work with physician entities; others require the contract to be with an individual.

If the agency will not contract your entity, the LLC adds formation cost, a registered-agent fee, annual reports, and (where applicable) franchise tax with little operational benefit for that engagement — the income still lands on you personally and on a personal 1099-NEC (the 2026 reporting threshold is $2,000 under OBBBA §70433). The entity may still be worth forming for asset separation, future S-corp plans, or non-agency work (e.g., direct facility contracts or moonlighting), but do not assume the agency relationship will route through it.

LocumStory similarly notes that an LLC or S-corp is optional for locum tenens and that your taxes are roughly the same with or without an entity — reinforcing that the entity decision is about liability and structure, not a tax shortcut.

Start as a sole proprietor when you are new or your income is uncertain — it has the lowest cost and is taxed identically to a single-member LLC. Form an LLC (or your state's required PLLC/PC) when you want business-vs-personal asset separation, your state requires a professional entity, or you are building toward an S-corp election. Add the S-corp election only when net 1099 income is high enough (often cited as roughly $200k+, though the break-even is fact-specific) that SE-tax savings outweigh payroll and Form 1120-S compliance costs.

Keep the attribution straight: the SE-tax savings people associate with "forming an LLC" actually come from the S-corp election layered on top — splitting a reasonable W-2 salary (subject to FICA) from distributions (not subject to SE tax). The IRS requires that the W-2 portion be "reasonable compensation" for the clinician's services before non-wage distributions are made, and can reclassify under-paid distributions as wages. The LLC alone changes nothing on the tax return. And remember the SSTB ceiling: above $276,750 single / $553,500 MFJ (2026), physicians, CRNAs, and AAs get $0 QBI regardless of entity, and W-2 wages do not rescue an SSTB above that limit.

If you have confirmed the entity is right for your state and your agency situation, the formation steps are straightforward and largely the same nationwide, with extra board approval for a PLLC/PC. The benefit of an LLC depends on maintaining separation between business and personal funds — so the bank account and operating agreement are not optional formalities; they are what preserves the liability shield. The steps below are summarized in the formation checklist; the optional S-corp election (step 7) is covered in the locum-tenens-s-corp guide, and the EIN/bank-account specifics in locum-tenens-business-bank-account-ein.