How to Choose a Legal Structure for a New Dental Practice
Learn how to choose the right legal structure for your new dental practice, including LLC, PC, and S-Corp options, with costs and steps.
Choosing a legal structure for your new dental practice is one of the first and most important business decisions you’ll make. The structure affects your taxes, personal liability, and ability to raise money. This guide explains the most common options for dental practices, their costs, and the practical steps to decide and implement one.
Why the Legal Structure Matters for Dentists
Your legal structure determines how you pay taxes, whether your personal assets are protected if the practice is sued, and how you handle partners or employees. For dentists, the most common structures are the Limited Liability Company (LLC), Professional Corporation (PC), and S-Corporation (S-Corp). Each has different implications for malpractice liability and tax treatment.
The Main Legal Structure Options
1. Sole Proprietorship
A sole proprietorship is the simplest structure: you and the practice are the same legal entity. There is no separate filing with the state, and you report business income on your personal tax return (Schedule C).
- Cost: $0 to $100 for a business license.
- Liability: Unlimited. Your personal assets (home, savings) are at risk if the practice is sued.
- Taxes: You pay self-employment tax (15.3% in 2026) on all net income, plus your marginal income tax rate.
- Best for: Very low-risk practices with no employees and minimal assets. However, most dentists should avoid this due to malpractice risk.
2. Limited Liability Company (LLC)
An LLC is a flexible structure that limits your personal liability for business debts and lawsuits. You can choose to be taxed as a sole proprietor (pass-through) or as an S-Corp.
- Cost: State filing fee ranges from $50 to $500, depending on the state. Annual report fees are $0 to $200.
- Liability: Limited. Your personal assets are protected, but you are still liable for your own malpractice.
- Taxes: Pass-through taxation. You pay self-employment tax on all net income unless you elect S-Corp status.
- Best for: Most new dental practices, especially solo owners. It offers liability protection without the formalities of a corporation.
3. Professional Corporation (PC) or Professional Association (PA)
A PC is a corporation formed specifically for licensed professionals like dentists. It provides liability protection and allows you to deduct certain benefits, but it requires more formalities (board meetings, minutes, etc.).
- Cost: Filing fee $100 to $800, plus annual fees. Legal and accounting setup can cost $1,000 to $3,000.
- Liability: Limited, but you are still personally liable for your own malpractice.
- Taxes: Can be taxed as a C-Corp (double taxation) or elect S-Corp status. Many PCs choose S-Corp to avoid double taxation.
- Best for: Practices with multiple owners or those who want to deduct health insurance premiums more easily.
4. S-Corporation (S-Corp)
An S-Corp is a tax election, not a separate entity type. You can form an LLC or PC and then elect S-Corp status with the IRS. This allows you to pay yourself a reasonable salary and take the rest as distributions, which are not subject to self-employment tax.
- Cost: Same as the underlying entity (LLC or PC) plus an additional $100 to $200 for the S-Corp election.
- Liability: Same as the underlying entity.
- Taxes: You must file Form 2553. You pay payroll taxes on your salary, but distributions are taxed only at your income tax rate, not self-employment tax.
- Best for: Practices with net income above $40,000 to $50,000, where the tax savings outweigh the extra payroll costs.
5. C-Corporation (C-Corp)
A C-Corp is a separate tax entity. It pays corporate tax on profits, and shareholders pay tax on dividends. This is rare for small dental practices due to double taxation.
- Cost: Similar to PC, with higher accounting fees.
- Liability: Limited.
- Taxes: Double taxation: corporate tax (21% federal in 2026) plus individual tax on dividends.
- Best for: Practices planning to go public or seeking venture capital, which is unlikely for a dental practice.
Comparison Table
| Structure | Liability Protection | Tax Treatment | Setup Cost (2026) | Annual Fees | Best For |
|---|---|---|---|---|---|
| Sole Proprietorship | None | Pass-through, self-employment tax | $0-$100 | $0 | Low-risk, solo, no employees |
| LLC | Limited | Pass-through, self-employment tax | $50-$500 | $0-$200 | Most solo practices |
| PC/PA | Limited | C-Corp or S-Corp election | $100-$800 | $100-$300 | Multi-owner practices |
| S-Corp (election) | Limited | Salary + distributions | Same as LLC/PC + $100-$200 | Same | Profitable practices |
| C-Corp | Limited | Double taxation | $100-$800 | $100-$300 | Rare for dental practices |
How to Choose: A Step-by-Step Process
Step 1: Assess Your Risk and Goals
Consider your practice’s risk level. If you will have employees, own equipment, or lease space, you need liability protection. If you plan to bring in partners, a PC or LLC with multiple members is better.
Step 2: Estimate Your Income
If your practice will net more than $50,000 after expenses, an S-Corp election can save you thousands in self-employment taxes. For lower income, an LLC without S-Corp is simpler and cheaper.
Step 3: Check State Requirements
Some states require dentists to form a PC or PA. For example, in California, dentists must form a PC. Check with your state dental board or a business attorney.
Step 4: Consult a Professional
Talk to a CPA and a business attorney who works with dental practices. They can help you project tax savings and ensure compliance. Expect to pay $200 to $500 for an initial consultation.
Step 5: File the Paperwork
Once you choose, file the articles of organization (for LLC) or incorporation (for PC) with your state. You’ll also need an Employer Identification Number (EIN) from the IRS, which is free.
Step 6: Set Up Bank Accounts and Insurance
Open a business bank account using your EIN. Purchase malpractice insurance and general liability insurance. Your legal structure does not replace insurance.
Common Mistakes to Avoid
- Choosing a sole proprietorship: Most dentists underestimate malpractice risk. Even with insurance, a lawsuit can exceed coverage limits.
- Ignoring state requirements: Some states mandate a PC for dentists. Check before filing.
- Electing S-Corp too early: If your income is low, the extra payroll costs (payroll service, unemployment insurance) can outweigh tax savings.
- Not updating your structure as you grow: If you add partners or employees, revisit your structure.
FAQ
Can I change my legal structure later?
Yes, you can convert an LLC to a PC or add S-Corp status later. However, converting may have tax consequences, so it’s best to choose correctly from the start.
Do I need a lawyer to form an LLC?
You can file yourself using online services like LegalZoom, but a lawyer can ensure you meet state-specific requirements. Costs range from $500 to $2,000 for professional setup.
How does malpractice insurance interact with my legal structure?
Your legal structure limits business liability, but it does not protect you from malpractice claims against you personally. You still need malpractice insurance.
What is the cheapest option for a new practice?
A sole proprietorship is cheapest, but it offers no liability protection. An LLC is the most cost-effective way to get liability protection, with filing fees often under $200.
The Bottom Line
For most new dental practices, an LLC is the best starting point. It offers liability protection, is simple to manage, and allows you to elect S-Corp status later when your income grows. If your state requires a PC, form that instead. Always consult a CPA and attorney before making the final decision. Take action this week: research your state’s requirements, estimate your first-year income, and book a consultation with a dental-specific professional.