S-Corp vs. LLC for Dentists: Which Entity Structure Keeps More of What You Earn?

The entity structure you choose for your dental practice is one of the most financially consequential decisions you will make as a practice owner — and yet many dentists set it up once at the start of their careers and never revisit it. As your income grows, your expenses evolve, and tax law changes, the structure that made sense when you opened your doors may no longer be the one that serves you best. Getting this right is not complicated, but it does require someone who understands both the tax code and how dental practices actually generate income.

At DrillDown Solution, entity structure analysis is a core part of how we advise dental practices. Our team has over 50 years of combined experience in dental tax planning and accounting, and we help practice owners at every stage evaluate whether their current structure is optimized for their situation. Our dental CPA services are built to help you make and keep more money — starting with making sure you are not paying more in taxes than you have to.

The Basics: LLC vs. S-Corp

Most dental practices are organized as either a limited liability company (LLC) or an S-Corporation — or sometimes both, with an LLC taxed as an S-Corp. Understanding the distinction between these structures is the first step toward knowing which one makes sense for your practice.

An LLC is a legal entity that provides liability protection for its owner. By default, a single-member LLC is taxed as a sole proprietorship, meaning all net income flows through to the owner’s personal tax return and is subject to both income tax and self-employment tax. That self-employment tax — currently 15.3% on the first $168,600 of net income and 2.9% above that — adds up quickly for a dentist generating $300,000 or more in practice income.

An S-Corporation changes that equation. When a practice is taxed as an S-Corp, the owner takes a reasonable salary from the business — which is subject to payroll taxes — and receives the remaining profit as a distribution, which is not subject to self-employment tax. For dentists at higher income levels, that distinction can result in meaningful annual tax savings.

According to the American Dental Association, the average net income for general dentists in private practice has remained well above $200,000 for the past decade, with expenses rising faster than revenues during that same period. At those income levels, the difference between an LLC and an S-Corp tax structure is rarely trivial.

When an S-Corp Makes Sense — and When It Does Not

The S-Corp structure is not automatically the right answer for every dental practice. It involves added administrative complexity — payroll processing, quarterly filings, and the requirement to pay yourself a reasonable salary — and those costs need to be weighed against the tax savings it produces.

As a general rule, the S-Corp structure tends to make financial sense once your practice is generating enough net income that the self-employment tax savings outweigh the added compliance costs. For most dental practices, that threshold falls somewhere between $80,000 and $100,000 in annual net profit, though the specific number depends on your situation.

The analysis also involves more than just current-year taxes. Retirement plan contributions, the qualified business income deduction, and state-specific tax considerations all interact with your entity structure in ways that can shift the calculation. Our tax planning team at DrillDown Solution models these variables for each practice so you are making the decision based on your actual numbers — not a generalized rule of thumb. You can explore our tax planning services.

What the Conversion Process Looks Like

If you are currently operating as a sole proprietor or a default LLC and the analysis supports converting to S-Corp status, the process is more straightforward than most dentists expect. You file an election with the IRS, establish payroll for yourself, and work with your CPA to make sure the salary you set is defensible as reasonable compensation for the services you provide to the practice. Timing matters — S-Corp elections generally need to be filed within the first two and a half months of the tax year to take effect for that year — so this is not a decision to leave until December.

Connect With DrillDown Solution

Getting your entity structure right is one of the highest-leverage financial decisions available to a dental practice owner. DrillDown Solution has been helping dentists evaluate and optimize their structure since 2004, and we bring the same dental-specific depth to this question that we bring to every aspect of your practice’s financial health. Our team is available year-round — not just at tax time — and we treat every client relationship as a long-term partnership.

To find out whether your current structure is optimized for your income level and goals, schedule a free consultation through our contact form.