CPA for Dentists: Tax Planning and Entity Structuring | SDO CPA

CPA for Dentists: Tax Strategies Built for Dental Practices

Dental practices face many of the same tax challenges as medical practices — and a few that are uniquely their own. A good CPA for dentists isn’t just filing returns; they’re analyzing your entity structure, timing your equipment purchases, and modeling what happens to your tax bill when you buy into a practice.

The S-Corp structure, Section 179 for equipment, and retirement planning work the same way for dentists as for physicians. But the practice transition market — moving from associateship to ownership, or selling to a DSO — creates a layer of complexity that most general CPAs aren’t equipped to handle.

Whether you’re a general dentist earning $200,000 a year or an oral surgeon clearing $600,000, the strategies available to you are significant. The difference between implementing them and missing them is often tens of thousands of dollars per year.

What does a CPA for dentists actually do?

A dental CPA analyzes your entity structure, handles your S-Corp or PLLC elections, maximizes equipment deductions (including Section 179 for chairs, X-ray equipment, and CBCT scanners), models practice buy-in and transition scenarios, and builds a retirement strategy that can shelter $72,000–$290,000 annually. The goal: keep more of what you earn and build a practice that’s worth something when you’re ready to exit.

Key Takeaways

• Most dentists earning $200K+ in net income may benefit from an S-Corp election — the same FICA savings concept that applies to physicians works for dentists too
• Dental equipment qualifies for Section 179 immediate expensing — chairs, X-ray machines, CBCT scanners, and CAD/CAM units all qualify, up to $2,500,000 in 2026
• Practice transitions from associateship to ownership are one of the most tax-sensitive events in a dentist’s career — the structure of your buy-in affects your taxes for years
• Retirement accounts can shelter $72,000–$290,000+ annually depending on plan type, income level, and age
• Asset sale vs. stock sale creates very different tax outcomes for both buyer and seller in a dental practice transaction
• DSO contracts have unique tax considerations compared to solo or group practice — equity rollovers, earnouts, and restrictive covenants each carry separate treatment

S-Corp for Dental Practices

If you’ve looked into S-Corp for dental practices, the core concept is straightforward: the S-Corp splits your income into two buckets — a W-2 salary and distributions. FICA taxes (Social Security and Medicare) apply only to the salary, not the distributions. For dentists earning well above the FICA wage base, that difference adds up.

The key is setting a reasonable W-2 salary. The IRS expects it to reflect what you’d pay someone else to do the same work. For dentists, the ADA’s annual income survey provides useful benchmarks. A general dentist earning $280,000 might set a salary around $150,000–$160,000. A specialist earning $500,000 would need a higher salary benchmark — MGMA and ADA data for their specialty applies.

Here’s an illustrative example: a general dentist with $350,000 in net practice income sets a W-2 salary of $160,000. The remaining $190,000 flows as S-Corp distributions. The FICA tax on $190,000 — both employee and employer sides — is what the S-Corp structure may save. That’s real money, every year.

One structural note: most states allow dentists to form PLLCs, but some require Professional Corporations (PCs) for licensed professionals. Check your state dental board rules before choosing an entity type. The PLLC vs PC analysis matters here.

Dental Equipment and Section 179

This is one of the most valuable deductions available to dental practices, and it’s also one of the most time-sensitive.

What qualifies for Section 179:

• Dental chairs and delivery units
• Digital X-ray systems (panoramic, periapical, bitewing)
• CBCT (cone beam CT) scanners
• CAD/CAM milling units
• Intraoral scanners
• Sterilizers and autoclaves
• Computers and tablets used in the practice
• Practice management software (Dentrix, Eaglesoft, Curve, etc.)
• Dental instruments and handpieces

The 2026 Section 179 deduction limit is $2,500,000. Equipment must be placed in service before December 31 to count for that tax year. Section 179 applies to both new and used equipment when purchased — not leased. If you lease equipment, those payments are deductible, but you lose the ability to expense the asset under Section 179 at purchase.

Bonus depreciation is 100% — permanently restored by the OBBBA (signed July 2025). For most dental practices, Section 179 covers all new equipment purchases well within its $2,500,000 limit.

Timing matters. A practice opening or major expansion in Q4 can front-load significant deductions into a single tax year. A dentist who equips a new operatory in November can potentially deduct the full cost in that year rather than spreading it over 5–7 years.

For more on equipment and practice tax deductions, the IRS guidelines are at IRS.gov Section 179.

Associateship vs. Practice Ownership — The Tax Difference

The jump from associate to owner changes your entire tax situation. Here’s what that looks like side by side:

As an associate, your employer handles payroll taxes and most deductions. You get a W-2 and file a relatively simple return. As an owner, every business decision has a tax dimension: how you buy equipment, how you pay yourself, how you fund retirement, and how you eventually sell.

The year you buy into a practice is one of the most important tax years of your career. What you pay, how it’s structured, and when it closes all affect your taxes going forward.

Practice Buy-In and Buy-Out Tax Strategy

Most dental practice sales are structured as asset sales, not stock sales. Here’s why that matters:

From the buyer’s perspective: An asset purchase gives you a stepped-up tax basis in everything you buy — equipment, furniture, patient records, and goodwill. You can depreciate those assets starting day one. With Section 179, you may be able to expense a large portion of the tangible assets in year one.

From the seller’s perspective: A stock sale is usually more favorable. The seller gets capital gains treatment on the full sale price rather than breaking it into ordinary income components. But most buyers resist stock sales because they inherit the entity’s liabilities and don’t get the stepped-up basis.

Goodwill is typically the largest component of a dental practice’s value — often 60–80% of the total purchase price. As a buyer, you amortize purchased goodwill over 15 years as an intangible asset. As a seller, goodwill is generally taxed at long-term capital gains rates.

DSO transactions are more complex. They often involve equity rollovers (you keep a stake in the larger organization), earnouts tied to future production, and restrictive covenants (non-competes) with separate tax treatment. Each piece carries different tax implications, and the structure of the deal can significantly affect your after-tax proceeds.

Getting a CPA involved before you sign — not after — is where the value is. The ADA’s practice resources at ADA.org include salary and practice sale data that helps contextualize valuations.

Dental-Specific Tax Deductions

Beyond equipment, dental practices have a wide range of deductible expenses that should be tracked and documented:

• Dental supplies and materials — composites, bonding agents, impression materials, implant components, lab-fabricated restorations
• Lab fees — outsourced crown and denture fabrication from external dental labs
• Staff uniforms and scrubs — required work attire qualifies
• Continuing education — CE courses required for licensure renewal are deductible; dental conferences also qualify
• Licensing and certification fees — dental board renewal fees, specialty board fees, DEA registration
• Professional association dues — ADA, state dental association, local society memberships
• Dental software subscriptions — Dentrix, Eaglesoft, Curve Dental, and similar practice management systems
• Malpractice and professional liability insurance — fully deductible as a business expense
• Staff costs — salaries, payroll taxes, health insurance premiums, retirement contributions
• Marketing and patient acquisition — website maintenance, Google Ads, patient communication platforms (Weave, Solutionreach, etc.)

Retirement Planning for Dentists

Dentists often start their careers later than other professionals — dental school typically runs 4 years after a 4-year undergraduate degree, sometimes followed by a residency. That late start makes aggressive retirement contributions especially important.

The same retirement plan options available to physicians apply to dentists:

Solo 401(k): For practice owners with no employees other than a spouse. The 2026 limit is $72,000 ($24,500 employee contribution + up to $46,500 employer contribution, subject to income limits). Catch-up contributions available at age 50.

SEP-IRA: Simpler to administer, but limited to 25% of compensation up to $72,000. No catch-up contributions.

Defined Benefit Plan: High-income specialists — oral surgeons, orthodontists, periodontists — earning $400,000–$600,000+ may find that a defined benefit plan allows annual contributions of $200,000 or more, depending on age and actuarial calculations.

Cash balance plan + Solo 401(k) combination: This pairing is particularly effective for specialists in their 40s and 50s who want to shelter $200,000–$290,000+ annually. The math is actuarial, but the result is real: a 50-year-old oral surgeon could potentially defer a substantial portion of income from taxation each year.

For more on physician retirement planning and S-Corp 401(k) strategy, those guides cover the same principles that apply to dental professionals.

Frequently Asked Questions

Do dentists need a CPA who specializes in dental practices?

Not necessarily a dental-only CPA, but you do need one familiar with healthcare practice structures, S-Corps for licensed professionals, Section 179 for medical equipment, and practice buy-sell transactions. A CPA who handles general small businesses may miss deductions or structure your entity in a way that costs you more over time.

Can a dental associate form an S-Corp?

It depends on how you’re classified. If you’re a W-2 employee, you can’t run a separate S-Corp for that income. But if you work as an independent contractor (1099) for one or more dental offices, you may be able to establish your own entity and elect S-Corp status — if your state allows it for licensed professionals.

Is dental equipment always fully deductible in year one?

Not always. Section 179 applies to equipment you purchase and place in service during the tax year, up to $2,500,000 in 2026. If your total equipment purchases exceed that limit, bonus depreciation (100% (restored permanently by OBBBA, signed July 2025)) applies to the excess. Leased equipment doesn’t qualify for Section 179 — only purchased assets do.

How is a dental practice buy-in taxed?

It depends on the structure. In an asset purchase, the buyer allocates the purchase price across tangible assets and intangibles (including goodwill). Tangible assets depreciate based on their class lives; goodwill amortizes over 15 years. In a stock purchase, the buyer takes the seller’s existing basis. Most dental practice transactions are asset sales.

Can a DSO transaction be structured to minimize taxes?

To a degree, yes. The equity rollover portion — where you retain a stake in the DSO — may allow for tax deferral. Earnout provisions, restrictive covenant payments, and employment agreements each carry different tax treatment. DSO transactions are complex enough that you’ll want both a CPA and a healthcare attorney involved well before the deal closes.

What’s the right retirement account for a dentist?

It depends on income, age, and how many employees you have. A solo general dentist in their 30s might start with a solo 401(k). A specialist in their late 40s earning $500,000+ may benefit significantly from adding a cash balance plan. The right combination can shelter $200,000–$290,000 annually for the right candidate — but the analysis is income- and age-specific.

Talk to a CPA Who Understands Dental Practices

SDO CPA works with dental and healthcare professionals on healthcare tax planning — from S-Corp elections and equipment deductions to practice buy-ins and retirement planning. We analyze your specific numbers and structure before you make decisions that affect multiple years of taxes.

If you’re a dentist with questions about your entity structure, a practice transition, or your current tax strategy, view our pricing or reach out to start a conversation.

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