Top Tax Strategies for Dermatologist / Plastic Surgeons
Defined Benefit / Cash Balance Plan
At $400,000+ income, a defined benefit or cash balance plan can shelter $200,000–$300,000+ per year from taxation — far more than the $70,000 limit of a 401(k). These plans are complex and require an actuary, but the tax savings justify the cost for high earners. A dermatologist earning $600,000 who contributes $250,000 to a cash balance plan reduces their taxable income to $350,000 — saving $92,500 in federal income tax at the 37% rate.
S-Corp Election for Practice Income
Dermatologists and plastic surgeons in private practice should evaluate S-Corp election to reduce self-employment tax on practice distributions. With $600,000 in practice income, a reasonable salary of $250,000 and $350,000 in distributions saves approximately $21,000/year in SE tax.
Real Estate Professional Status
Many high-earning physicians invest in real estate as a tax shelter. Real estate professional status (§469) allows the physician to deduct rental losses against ordinary income — but requires 750+ hours per year in real estate activities and more time in real estate than any other profession. For a full-time physician, this is extremely difficult to achieve. However, short-term rental properties (average rental period of 7 days or less) are not subject to the passive activity rules and can generate losses that offset ordinary income without the REP status requirement.
NIIT Planning
Dermatologists and plastic surgeons earning over $200,000 (single) or $250,000 (MFJ) pay the 3.8% Net Investment Income Tax on investment income. Strategies to reduce NIIT: maximize retirement plan contributions (reduces MAGI), invest in tax-exempt municipal bonds (interest is excluded from NIIT), and use tax-loss harvesting to offset capital gains.
More Tax Planning FAQs
How does the S-Corp election reduce self-employment tax?
An S-Corp election allows the owner to split income between a reasonable salary (subject to 15.3% FICA on the first $176,100 in 2026) and distributions (not subject to FICA). For a business owner with $200,000 in net profit paying an $80,000 salary, the annual SE tax savings are approximately $15,500–$18,500. The S-Corp must file
Form 2553 within 75 days of formation.
What is the Section 199A QBI deduction and how does it apply?
The §199A deduction allows pass-through business owners to deduct up to 23% of qualified business income (QBI) from taxable income (increased from 20% under OBBBA). For taxpayers above $403,500 (MFJ) in 2026, the deduction is limited to the greater of 50% of W-2 wages or 25% of W-2 wages plus 2.5% of qualified property. Specified Service Trades or Businesses (SSTBs) phase out above this threshold.
What retirement plan options are available for self-employed professionals?
Self-employed professionals can establish a Solo 401(k) (up to $70,000 in 2026), a SEP-IRA (25% of net self-employment income up to $70,000), a SIMPLE IRA ($16,500 + $3,500 catch-up), or a Defined Benefit Plan (up to $280,000+ depending on age). The Solo 401(k) is the best option for most self-employed professionals because it allows the highest contributions relative to income.
How does the home office deduction work for self-employed professionals?
Self-employed professionals who use a dedicated home office space exclusively and regularly for business qualify for the home office deduction under §280A. The deduction is calculated as a percentage of home expenses (mortgage interest, utilities, insurance, depreciation) equal to the office square footage divided by total home square footage. The simplified method allows $5/sq ft up to 300 sq ft ($1,500 maximum).
What vehicle deductions are available for self-employed professionals?
Self-employed professionals can deduct vehicle expenses using either the standard mileage rate (70 cents/mile in 2026) or actual expenses. Vehicles with a GVWR over 6,000 lbs qualify for §179 expensing (up to $30,500 for heavy SUVs) and bonus depreciation without luxury auto limits. A mileage log must be maintained for either method. The vehicle must be used more than 50% for business to qualify for accelerated depreciation.
What is the Augusta Rule and how can it benefit business owners?
The Augusta Rule (§280A(g)) allows homeowners to rent their primary or secondary residence to their business for up to 14 days per year. The rental income is completely tax-free to the homeowner, and the business deducts the rent as a business expense. At $2,000–$3,000/day for 14 days, this strategy generates $28,000–$42,000 of tax-free income while the business deducts the same amount.
How does cost segregation apply to business owners who own real estate?
Cost segregation reclassifies building components into shorter depreciation categories eligible for bonus depreciation. For a $1M commercial property, cost segregation typically identifies $150,000–$250,000 of accelerated depreciation, generating $60,000–$100,000 in first-year deductions at the 100% bonus depreciation (restored by OBBBA for property placed in service after Jan 19, 2025) rate in 2026. A cost segregation study costs $5,000–$15,000 and typically has a 10:1+ ROI.
What is the difference between a sole proprietor and an S-Corp for tax purposes?
A sole proprietor pays self-employment tax (15.3%) on all net profit. An S-Corp owner pays FICA only on their reasonable salary, saving SE tax on distributions. For a business with $200,000 in net profit, the S-Corp saves $15,000–$20,000/year in SE tax. The S-Corp has additional costs (payroll, bookkeeping, tax preparation) of $2,000–$4,000/year, making the break-even point approximately $40,000–$50,000 in net profit.
How should a self-employed professional handle estimated tax payments?
Self-employed professionals must make quarterly estimated tax payments by April 15, June 15, September 15, and January 15. The safe harbor is 100% of prior year tax (110% if prior year AGI exceeded $150,000). Failure to pay sufficient estimated taxes results in an underpayment penalty under §6654. S-Corp owners should adjust their payroll withholding to cover their estimated tax liability.
What business expenses are deductible for self-employed professionals?
Ordinary and necessary business expenses under §162 include: professional licenses and continuing education, professional liability insurance, office supplies and equipment, software subscriptions, marketing and advertising, professional association dues, business travel (flights, hotels, 50% of meals), and home office expenses. Personal expenses are not deductible even if they have some business connection.
What is the self-employed health insurance deduction?
Self-employed professionals can deduct 100% of health insurance premiums (for themselves, their spouse, and dependents) as an above-the-line deduction under §162(l). This deduction reduces AGI and is available even if the taxpayer does not itemize. The deduction is not available if the taxpayer is eligible for employer-sponsored health insurance through a spouse’s employer. S-Corp owners must include premiums in W-2 wages before claiming the deduction.
How does the net investment income tax (NIIT) affect self-employed professionals?
The 3.8% NIIT applies to net investment income (interest, dividends, capital gains, rental income, passive business income) for taxpayers with MAGI above $200,000 (single) or $250,000 (MFJ). Active business income and wages are not subject to the NIIT. Self-employed professionals who invest in rental properties or passive businesses should plan for the NIIT impact on their investment income.
What are the key steps to properly set up an S-Corp election for a dermatologist's practice in 2026?
To set up an S-Corp election for a dermatologist's practice, first ensure the entity qualifies as a domestic corporation or eligible LLC. File
Form 2553 with the IRS by the 15th day of the third month of the tax year for which the election is to be effective. Establish reasonable compensation for the physician-owner to comply with IRS guidelines and avoid audit triggers. Maintain separate payroll and distributions to substantiate the S-Corp structure. Document all decisions and retain supporting records consistent with IRC guidance.
When should a dermatologist file for the self-employed health insurance deduction under IRC §162(l) in 2026?
The self-employed health insurance deduction under §162(l) is claimed on the taxpayer's individual income tax return for the year the premiums are paid. Dermatologist practitioners should file this deduction with their
Form 1040 Schedule 1, ensuring they are not eligible to participate in an employer-subsidized health plan. It is crucial to keep detailed records of premiums paid during the calendar year and confirm that the deduction does not exceed earned income from the practice. Filing timely and accurately supports compliance and maximizes deductible benefits.
What documentation should a tax professional maintain to support a dermatologist's QBI deduction under §199A?
Supporting documentation for the §199A deduction must include clear records of qualified business income from the dermatology practice, W-2 wages paid, and the unadjusted basis immediately after acquisition (UBIA) of qualified property. Since many high-income dermatologists exceed the threshold ($364,200 for joint filers in 2026), it is essential to document income sources precisely to determine phase-out applicability. Invoices, payroll records, and asset depreciation schedules are critical to substantiate the deduction and withstand IRS scrutiny.
What audit risks are heightened for dermatologists who combine clinical practice income with income from cosmetic procedures?
Combining income streams from clinical dermatology and elective cosmetic procedures can raise audit risks, especially if income classification impacts eligibility for deductions like the QBI deduction under §199A. The IRS may scrutinize whether cosmetic services qualify as a separate trade or business, affecting wage and property limitations. Misclassification of income or failure to allocate expenses properly can trigger disputes over deductible amounts and reasonable compensation. Proper segregation of revenue and thorough documentation mitigate these risks.
How does a PLLC compare to a PC entity for a dermatologist in terms of tax treatment and liability?
From a federal tax perspective, both a PLLC and a PC can elect S-Corp status, resulting in similar taxation under Subchapter S of the IRC. The main distinction lies in state law and professional liability protections rather than tax treatment. For dermatologists, the choice between PLLC and PC typically depends on state licensing board requirements and malpractice considerations. Tax planning strategies remain consistent across both entity types, focusing on compensation, distributions, and retirement plan contributions.
Can a dermatologist combine contributions to multiple retirement plans, such as a 401(k) and a 403(b), in 2026?
Yes, a dermatologist can contribute to both a 401(k) and a 403(b) plan, but the combined elective deferral limit for 2026 is $24,500 across all plans, with an additional $7,500 catch-up contribution if age 50 or older. Employer contributions do not count toward this limit but are subject to an overall limit of $66,000. It is essential to coordinate contributions to avoid exceeding annual limits and to maximize tax benefits. Proper tracking and reporting ensure compliance with IRC §401(k), §403(b), and §415 limits.
What client questions should I ask to effectively advise a dermatologist on minimizing tax overpayment?
Start by asking about the client's entity structure, compensation methods, and any current retirement plans, since these impact tax liability and planning opportunities. Inquire about income sources, including cosmetic procedures versus clinical services, to assess eligibility for deductions like §199A. Clarify their health insurance coverage and premium payment methods to optimize the self-employed health insurance deduction under §162(l). Finally, discuss prior tax filings and any audit history to identify compliance risks and tailor recommendations that minimize overpayment.
