Physician practice owners occupy a unique position in the tax code. You are simultaneously a highly compensated professional, a small business owner, an employer, and often a real estate investor. Each of these hats comes with distinct tax strategies, and the physicians who optimize across all of them save tens of thousands of dollars per year compared to those who treat their practice taxes like a W-2 job.
The challenge is that most CPAs—even good ones—don't specialize in healthcare practices. Physician practices have unique revenue cycles, payer dynamics, regulatory requirements, and equipment depreciation schedules that don't map neatly to a standard small business return. This article covers the highest-impact tax strategies for practice owners, organized by entity structure, retirement planning, deductions, and advanced planning.
Entity Structure: Tax Implications of LLC vs. S-Corp vs. C-Corp
Your practice's legal entity structure is the single most consequential tax decision you will make. Changing structures later can trigger taxable events, so getting this right early matters enormously.
| Feature | LLC (Sole Prop/Partnership) | S-Corporation | C-Corporation |
|---|---|---|---|
| Self-employment tax | Full 15.3% on all net income | Only reasonable salary subject to FICA; distributions free of SE tax | N/A (corp pays its own taxes) |
| QBI deduction eligibility | Yes (pass-through) | Yes (pass-through) | No |
| Corporate tax rate | Individual rates only | Individual rates only | Flat 21% (TCJA) |
| Retained earnings tax | No double taxation | No double taxation | Double taxation on dividends |
| Best for annual net income | Under ~$80,000 | $80,000–$500,000+ | Over $500,000 (especially if reinvesting) |
| Complexity/cost | Low | Moderate (payroll, filings) | High (separate return, double tax planning) |
LLC taxed as sole proprietorship is common for solo practitioners just starting out. The simplicity is appealing, but the self-employment tax hit is significant. At $300,000 of net income, a sole proprietor pays roughly $21,000 in Medicare and Social Security taxes that could be partially avoided with an S-Corp election.
S-Corporation is the most popular structure for established physician practices. The key benefit: you pay yourself a "reasonable salary" (subject to FICA), and the remaining profits pass through as distributions that avoid self-employment tax. The IRS expects S-Corp physician salaries to be market-rate—generally at least the 25th percentile of MGMA for your specialty. Pay yourself $200,000 salary and take $150,000 as distributions, and you save roughly $11,500 per year in Medicare and Social Security taxes vs. an LLC (the employer and employee share of FICA on the distribution amount).
C-Corporation is less common for service-based practices but has specific advantages: the flat 21% corporate rate can be lower than the top individual rate of 37%, allowing you to retain earnings in the corporation for growth at a lower tax rate. This works best when you are reinvesting a significant portion of income into the practice (new locations, equipment, hiring). The trade-off is double taxation when you eventually distribute profits as dividends.
Retirement Plans: Which One Saves You the Most?
Retirement plan selection is the highest-leverage tax decision for most physician owners. The right plan can shelter $60,000 to $300,000+ per year from current taxation. Here is how the options compare by income level:
- SEP IRA: Allows contributions up to 25% of compensation (max $66,000 in 2026). Simple to set up and administer. Best for solo practitioners earning under $200,000 who want minimal paperwork. The downside: contributions must be a uniform percentage for all eligible employees, which makes it expensive if you have staff.
- Solo 401(k): Available if you have no employees (other than a spouse). Allows up to $23,000 employee deferral plus up to 25% employer profit-sharing, for a total of up to $69,000 in 2026. The ability to make Roth deferrals within the plan is a valuable option. Best for solo practices earning $200,000–$400,000.
- Safe Harbor 401(k): The best option when you have employees. You must make employer contributions that vest immediately (either 3% of compensation or 4% with a matching formula), but you can contribute up to $69,000 as the owner and the plan design is more flexible than a SEP IRA for reducing staff costs. Best for practices with 2-10 employees.
- Cash Balance Plan: This is the "supercharged" retirement vehicle for high-earning physicians. A cash balance plan is a defined benefit pension plan layered on top of a 401(k). It allows tax-deductible contributions of $100,000 to $300,000+ per year, depending on age and income. Best for owners aged 45+ with net income over $500,000 who want to make massive pre-tax contributions. The catch: it requires an actuary and annual PBGC premiums, and it locks you into consistent contributions.
A typical strategy for a practice earning $600,000 net: max out a Safe Harbor 401(k) at $69,000, then contribute another $150,000 to a Cash Balance Plan. That shelters $219,000 from current income, saving roughly $80,000 in federal and state taxes at the top marginal rate. Over 10 years, that's $800,000 in tax savings plus compounded investment growth inside the plan.
High-Impact Deductions Every Practice Owner Should Use
Equipment Purchases — Section 179
Section 179 allows you to deduct the full cost of qualifying equipment (EHR systems, exam tables, ultrasound machines, surgical instruments) in the year of purchase rather than depreciating over 5-7 years. In 2026, the Section 179 limit is $1,220,000. If your practice needs to upgrade equipment, the Section 179 deduction alone can wipe out a massive tax liability. Bonus depreciation (80% in 2026) can also apply to certain property.
Home Office Deduction
Many physician owners do some practice management work from home. If you have a dedicated space used exclusively and regularly for administrative tasks (billing, scheduling, credentialing), you can claim the home office deduction. The simplified method allows $5 per square foot up to 300 square feet ($1,500). The regular method deducts a percentage of mortgage interest, utilities, and insurance based on the square footage of the office relative to the home. Note: the home office deduction is a common audit flag if it looks aggressive, so documentation matters.
CME and Travel
Continuing medical education expenses are fully deductible, including registration fees, travel, lodging, and 50% of meals. If you combine a CME conference with a personal vacation, you can deduct the CME portion of travel days and expenses—just keep meticulous records. The IRS allows deductions for CME travel even if the conference is in a desirable location (Hawaii, Aspen, etc.), as long as the primary purpose is educational.
Malpractice Premiums
Malpractice insurance is fully deductible as a business expense. This one is straightforward, but many physicians miss the nuance: if you pay tail coverage upon leaving a practice, that is also deductible. If you pay premiums through your practice entity, ensure they are recorded as a business expense deduction, not as a personal deduction.
Health Insurance
Premiums for health, dental, and vision insurance for yourself, your spouse, and your dependents are fully deductible as an above-the-line adjustment to income (not an itemized deduction). This is especially valuable because it reduces both your income tax and your self-employment tax base. If you have employees, group health insurance premiums are fully deductible as a business expense.
Auto Expense
If you use your vehicle for practice-related travel (hospital rounds, visiting other clinic locations, meeting with administrators), you can deduct either the standard mileage rate (65.5 cents per mile for 2026) or actual expenses (gas, maintenance, insurance, depreciation). The standard mileage rate is almost always better for physicians whose primary vehicle is used partly for business. Keep a mileage log in your glove box and record every trip.
Advanced Tax Strategies
Income Shifting
If your spouse works in the practice (or can be legitimately employed in a practice role—billing, scheduling, practice management), paying them a reasonable salary shifts income from your top bracket into their lower bracket. This is not a loophole; it's a straightforward application of the progressive tax system. Even better, a spouse employed by the practice can participate in the practice's retirement plan, effectively doubling the retirement contribution capacity.
Family Employment
Hiring your children (age 18+) for legitimate practice work (cleaning, filing, basic IT, social media) shifts earned income to their lower tax bracket. A child can earn up to the standard deduction amount ($14,600 in 2026) tax-free. Above that, they pay at their own rate, which is almost certainly lower than yours. The payments must be for actual work at reasonable market rates, and you must follow proper payroll procedures.
Health Savings Accounts (HSAs)
If your practice offers a high-deductible health plan, you can contribute to an HSA. In 2026, the limits are $4,300 for self-only and $8,600 for family coverage, plus an additional $1,000 catch-up for those 55+. HSA contributions are pre-tax, grow tax-free, and withdrawals for qualified medical expenses are tax-free. An HSA is the only "triple tax-advantaged" account available under US tax law.
Cost Segregation for Practice-Owned Real Estate
If you own the building your practice operates in through a separate entity, a cost segregation study can accelerate depreciation on the building. A standard commercial building depreciates over 39 years. A cost segregation study reclassifies portions of the building (electrical, plumbing, flooring, landscaping) into shorter-lived categories (5, 7, or 15 years). This can generate $50,000 to $200,000+ in additional first-year depreciation, depending on the building's value. The study costs $5,000–$15,000 but can pay for itself many times over in year one.
Estimated Tax Payments: Don't Get Penalized
Physician practice owners are required to pay estimated taxes quarterly if they expect to owe $1,000 or more at filing. The IRS penalty for underpayment is based on the federal short-term rate plus 3%, calculated on each quarter's shortfall. The safe harbor rules:
- Pay 100% of last year's tax liability (110% if your AGI was over $150,000) through withholdings and estimated payments
- Or pay at least 90% of this year's actual liability
Most practice owners use the "100% of last year" safe harbor. The simplest approach: increase your practice's payroll withholding (if structured as an S-Corp) to cover your tax liability, since withholding is treated as evenly paid throughout the year regardless of when it's actually withheld. This can eliminate the need for separate quarterly estimated payments.
Quarterly estimated tax due dates for 2026: April 15, June 15, September 15, and January 15, 2027.
Working with a Healthcare-Focused CPA
Not all CPAs are created equal, and a CPA who specializes in physician practices will pay for themselves many times over. Here is what to look for:
- Experience with S-Corp taxation: Including reasonable salary analysis and IRS audit defense for compensation practices
- Knowledge of retirement plan design: A CPA who coordinates with a TPA (third-party administrator) for cash balance plans is worth their weight in gold
- Familiarity with cost segregation: If you own or plan to own your practice property
- State-specific knowledge: State tax treatment of pass-through entities varies dramatically (e.g., California's $800 minimum franchise tax, New York's MCTMT)
- Proactive tax planning (not just compliance): Your CPA should be meeting with you in October, not just when the K-1 arrives in March
Year-Round Tax Planning vs. April Scramble
The single biggest mistake physician practice owners make is treating tax planning as an April activity. By the time your return is being prepared, the planning opportunities for the prior year have expired. A year-round tax planning calendar looks like this:
- Q1 (Jan–Mar): Review prior year return, adjust payroll and estimated payments for the current year, evaluate Section 179 purchases planned for the year, set retirement plan contribution targets
- Q2 (Apr–Jun): Make equipment and technology purchasing decisions early enough to maximize full-year depreciation benefits; fund IRA and HSA contributions for the prior year (deadline is April 15)
- Q3 (Jul–Sep): Mid-year tax projection meeting with CPA, adjust estimated payments if income is tracking higher or lower than expected, implement income shifting strategies
- Q4 (Oct–Dec): Year-end planning: maximize retirement contributions, accelerate or defer expenses/revenue based on projected tax bracket, make charitable contributions from the practice entity, evaluate Section 179 purchases before year-end
The difference between a practice that does year-round planning and one that files and forgets is typically $15,000 to $50,000 per year in total tax savings. Over a 20-year career, that's $300,000 to $1,000,000. Not bad for a few hours per quarter with a good CPA.
Try it: Model your practice revenue with the Payer Mix Analyzer to plan tax strategies around different revenue scenarios.