LLC vs S-Corp for Clinicians: Which Structure Is Right?

The Three Options

When clinicians ask about entity structure, they are really asking about three levels of complexity, each with different tradeoffs:

1. Sole Proprietorship -- the default. No entity formation required.
2. LLC (taxed as sole prop or partnership) -- liability protection, same tax treatment.
3. LLC with S-Corp Election -- liability protection plus tax optimization.

There is no single right answer. The best structure depends on your income level, state laws, and how much administrative complexity you are willing to manage.

Sole Proprietorship: The Baseline

If you do nothing -- no LLC, no incorporation -- you are a sole proprietor by default. You report all business income on Schedule C of your personal tax return.

Advantages:

• Zero setup cost or paperwork
• Simplest tax filing
• No annual fees or compliance requirements

Disadvantages:

• No liability separation -- your personal assets (home, savings, investments) are exposed to business claims
• No self-employment tax optimization
• Looks less professional to facilities and agencies

Best for: Clinicians doing occasional 1099 work under $40K, or those testing the waters before committing to independence.

LLC: The Foundation

An LLC (Limited Liability Company) creates a legal wall between your business and personal assets. If someone sues your practice, they can reach business assets but not (generally) your personal home, retirement accounts, or other personal property.

By default, a single-member LLC is taxed identically to a sole proprietorship -- all income flows to Schedule C. The IRS considers it a "disregarded entity" for tax purposes. You still pay self-employment tax on all net earnings.

Advantages:

• Liability protection (the primary reason to form one)
• No change in tax complexity versus sole prop
• Foundation for S-Corp election when income justifies it
• Professional credibility with facilities and agencies
• Simple formation ($50-500 depending on state)

Disadvantages:

• Annual state fees (varies: $0 in some states, $800 in California)
• Requires basic record-keeping (operating agreement, separate bank account)
• No self-employment tax savings versus sole prop

Best for: Clinicians earning $40K-$80K in 1099 income, or anyone who wants liability protection regardless of income level.

S-Corp Election: The Tax Optimizer

Here is where the real savings happen. An S-Corp is not a separate entity type -- it is a tax election you make on top of your LLC. You file Form 2553 with the IRS, and your LLC begins being taxed as an S-Corporation.

The key mechanism: as an S-Corp, you split your business income into two streams:

1. Salary -- a reasonable amount you pay yourself as a W2 employee of your own company. Subject to payroll taxes (Social Security + Medicare = 15.3%).
2. Distributions -- the remaining profit, paid to you as the owner. Subject to income tax, but NOT subject to self-employment/payroll taxes.

The Math That Matters

Consider a CRNA netting $200,000 from 1099 work:

Without S-Corp (Schedule C):

• Self-employment tax on $200,000 = approximately $28,000
• (15.3% on the first $168,600 + 2.9% on the remainder)

With S-Corp (reasonable salary of $100,000):

• Payroll tax on $100,000 salary = approximately $15,300
• No payroll tax on $100,000 in distributions
• Annual savings: approximately $12,700

At higher income levels, the savings grow. A clinician netting $300,000 with a $120,000 salary saves roughly $18,000-$20,000 per year.

The Compliance Cost

S-Corp taxation adds administrative requirements:

• Payroll processing -- you must run regular payroll for yourself ($40-60/month via Gusto or similar)
• S-Corp tax return -- Form 1120-S, in addition to your personal return. CPA fees increase by $1,000-$2,000.
• Reasonable compensation documentation -- the IRS requires your salary to be justifiable. Your CPA should maintain documentation.
• Quarterly payroll tax filings -- Form 941, quarterly

Total additional annual cost: approximately $3,000-$5,000 in CPA fees and payroll costs.

The Decision Framework

Net business income under $40K: Sole proprietorship is fine. The administrative cost of an LLC is not justified for occasional 1099 work, and S-Corp savings are negligible.

Net business income $40K-$80K: Form an LLC for liability protection. S-Corp election is borderline -- the tax savings may not exceed the additional compliance costs. Run the numbers with your CPA.

Net business income above $80K: LLC with S-Corp election is almost always the right answer. The self-employment tax savings significantly outweigh the additional compliance costs.

Multiple owners or complex arrangements: Consult an attorney. Multi-member LLCs, partnerships, and professional corporations have additional considerations beyond the scope of this guide.

State-Specific Considerations

Entity structure interacts with state tax law in important ways:

• California charges an $800 minimum franchise tax on LLCs regardless of income, plus a gross receipts fee for higher earners. S-Corps also pay the $800 minimum plus a 1.5% net income tax.
• Texas has no personal income tax but does have a franchise (margin) tax on entities.
• New York requires LLCs to publish a notice of formation in two newspapers -- this can cost $1,000-$2,000.
• Florida, Nevada, Wyoming -- no state income tax and low formation costs. Popular for clinicians who work across state lines.

Your CPA should factor state-specific costs into the S-Corp savings analysis.

Common Mistakes

Setting salary too low. The IRS scrutinizes S-Corp salaries. A clinician paying themselves $40,000 on $250,000 in net income is asking for an audit. Keep your salary at 40-60% of net income, benchmarked against industry standards.

Electing S-Corp too early. If your first year of 1099 income is unpredictable, wait. You can always elect retroactively (within 75 days of the tax year) or prospectively.

Ignoring state costs. In California, the LLC + S-Corp combined state costs can eat into savings for lower-income clinicians.

Not running payroll consistently. S-Corp salary must be paid via actual payroll (with withholding and W-2 issuance), not owner draws. Informal payments defeat the structure.

Not sure which structure is right for your situation? CCA members can connect with CPAs who specialize in 1099 clinician tax strategy. Learn more.