Medical Professional Tax Guide for Practitioners — 2026
Complete practitioner guide to physician and medical professional taxation — entity selection, retirement plans, malpractice insurance deductions, CME expenses, and practice transition planning. Updated for 2026.
Entity Selection for Medical Practices
| Entity Type | Self-Employment Tax | QBI Deduction | Liability Protection | Best For |
|---|---|---|---|---|
| Sole proprietor/Schedule C | Full SE tax (15.3% up to SS base) | Yes (if under SSTB threshold) | None | Solo practitioners starting out |
| Single-member LLC | Full SE tax | Yes | Yes (state law) | Solo practitioners with liability concerns |
| S corporation | SE tax only on W-2 salary | Yes (on S corp income, not W-2) | Yes | Physicians with net income >$80,000 |
| Partnership/multi-member LLC | SE tax on guaranteed payments | Yes | Yes | Group practices |
| C corporation | No SE tax | No QBI deduction | Yes | Rarely beneficial for physicians |
Source: IRC §199A; §1401; §1361; Treas. Reg. §1.199A-5 (SSTB)
Medical practices are Specified Service Trades or Businesses (SSTBs) under IRC §199A. This means the QBI deduction phases out for physicians with taxable income above $197,300 (single) or $394,600 (MFJ) in 2026, and is completely eliminated above $247,300 (single) or $444,600 (MFJ). For high-income physicians, the QBI deduction may be unavailable — making S corporation election and retirement plan contributions even more important for tax reduction.
S Corporation Strategy for Physicians
| S Corp Planning Step | Description | Tax Savings |
|---|---|---|
| Set reasonable W-2 salary | Pay yourself a reasonable salary (not too low) | Reduces SE tax on remaining S corp income |
| Distribute remaining profit | Take distributions above salary | No SE tax on distributions |
| Calculate SE tax savings | (Net income - salary) × 15.3% (up to SS base) | $5,000-$25,000+ per year depending on income |
| Consider retirement plan | Solo 401(k) or defined benefit plan on W-2 salary | Additional $23,500-$70,000+ deduction |
| Health insurance deduction | 100% deductible as S corp expense | Reduces W-2 income; reduces SE tax |
Source: IRC §1361; §3121; Rev. Rul. 74-44 (reasonable compensation)
Case Study: Dr. Sarah K., internist, solo practice. Net practice income: $380,000. Previously filing as sole proprietor: SE tax $24,000; income tax $95,000; total $119,000. After S corp election: W-2 salary $160,000; S corp distribution $220,000; SE tax on salary $12,240; income tax $89,000; S corp payroll costs $3,200; total $104,440. Annual savings: $14,560. Practitioner fee: $4,500/year. ROI: 3.2:1 per year. Over 10 years: $101,100 in savings.
Retirement Plans for Physicians — Maximizing Contributions
| Retirement Plan | 2026 Contribution Limit | Best For | Key Feature |
|---|---|---|---|
| Solo 401(k) | $23,500 employee + 25% of W-2 (total $70,000) | Solo practitioners | Highest contribution limit; Roth option available |
| SEP-IRA | 25% of W-2 or net SE income (max $70,000) | Simple setup | Easy to set up; no annual filing |
| Defined benefit plan | Up to $280,000/year (2026) | High-income physicians age 45+ | Largest deduction; actuarially determined |
| SIMPLE IRA | $16,500 + employer match | Small group practices | Simple; lower contribution limit |
| Cash balance plan | $100,000-$300,000+/year | Physicians age 50+ with high income | Combines with 401(k) for maximum deduction |
Source: IRC §401(k); §408(k); §412; §415; Rev. Proc. 2025-32 (2026 limits)
Defined benefit plan strategy: For physicians age 50 and older with high income and no employees (or few employees), a defined benefit plan can generate deductions of $150,000-$300,000 per year — far exceeding the $70,000 limit of a 401(k) or SEP-IRA. The plan is actuarially determined based on the physician's age, income, and desired retirement benefit. A cash balance plan (a type of defined benefit plan) is particularly popular because it has a more straightforward structure.
CME, Malpractice, and Practice-Specific Deductions
| Medical Professional Deduction | Deductibility | Notes |
|---|---|---|
| Malpractice insurance premiums | 100% deductible | Business expense; Schedule C or S corp |
| Continuing medical education (CME) | 100% deductible | Must be required to maintain license or improve skills |
| Medical journals and subscriptions | 100% deductible | Business expense |
| Medical equipment and supplies | 100% deductible (§179 available) | Business expense; depreciation or immediate expensing |
| Electronic health records (EHR) software | 100% deductible | Business expense; may qualify for §179 |
| Home office (if used for administrative work) | Deductible if exclusive/regular use | Calculate based on square footage |
| Professional association dues | 100% deductible | AMA, specialty society dues |
| Licensing fees | 100% deductible | State medical license renewal fees |
Source: IRC §162; §179; IRS Publication 535
Frequently Asked Questions
The information on this page is intended for licensed tax professionals (CPAs, EAs, and tax attorneys) and is provided for educational and research purposes only. Tax law is complex and fact-specific — all strategies discussed are subject to limitations, phase-outs, and conditions that may not apply to every client situation. Practitioners should independently verify all information against current IRS guidance, Treasury Regulations, and applicable state law before advising clients. This content does not constitute legal or tax advice.
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