Anesthesiologist Tax Playbook

The Anesthesiologist Tax Landscape

Anesthesiologists are among the highest-paid physicians in the United States, with median compensation ranging from $350,000 to $550,000 depending on practice setting, geography, and subspecialty. The income structure varies significantly: hospital-employed anesthesiologists receive W-2 income with limited self-employment planning options, while private practice anesthesiologists and locum tenens providers receive 1099 income with access to the full suite of self-employed tax strategies.

The tax planning opportunity for a $450,000 1099 anesthesiologist is substantial. Without planning, the effective federal marginal rate on the top dollar of income exceeds 40.7% (37% + 3.8% NIIT + 0.9% Additional Medicare Tax). With a properly structured S-Corp, Solo 401(k), and cash balance defined benefit plan, the same anesthesiologist can reduce taxable income by $200,000–$320,000 annually, generating $80,000–$120,000 in annual tax savings. The planning tools are straightforward and well-established — the challenge is ensuring they are implemented correctly and documented properly.

The anesthesiologist's income structure also creates unique issues around the §199A qualified business income deduction. Anesthesiology is a specified service trade or business (SSTB) under the regulations, meaning the 20% QBI deduction phases out at the 2026 threshold of $394,600 (MFJ) and is eliminated above $494,600 (MFJ). Most anesthesiologists are above the complete phase-out threshold, making retirement plan contributions the primary lever for reducing taxable income below the threshold.

Entity Structure: S-Corp for 1099 Anesthesiologists

For anesthesiologists with $200,000+ in net 1099 income, the S-Corp election under §1361–§1362 is the foundational planning step. The S-Corp pays the anesthesiologist a reasonable W-2 salary (typically $200,000–$280,000 based on employed anesthesiologist benchmarks from MGMA data) and distributes the remainder as S-Corp dividends not subject to FICA or the Additional Medicare Tax.

At $450,000 net income with a $220,000 reasonable salary, the FICA savings calculation: FICA on the salary is approximately $25,000 (Social Security on the first $184,500 at 15.3% + Medicare on all wages at 2.9%). The remaining $230,000 in distributions avoids FICA entirely, saving approximately $13,300 in Medicare taxes annually. The Additional Medicare Tax (0.9%) on wages above $200,000 adds further savings on the distribution portion.

State licensing requirements: most states require anesthesiologists to operate through a Professional Corporation (PC) or Professional Limited Liability Company (PLLC). The S-Corp election is available for both structures. Practitioners should verify state professional entity requirements before forming the entity and confirm that the state recognizes the federal S-Corp election for state tax purposes (most do, but a few states — notably New York and New Jersey — have separate S-Corp election requirements).

Retirement Plan Stack: Maximizing Pre-Tax Contributions

The retirement plan stack for anesthesiologists follows the same architecture as for radiologists and other high-income physicians: Solo 401(k) as the foundation, cash balance defined benefit plan as the multiplier, and backdoor Roth IRA for tax-free growth.

The cash balance plan requires an enrolled actuary and a minimum three-year commitment. Annual administration costs are $5,000–$15,000 — well justified at these contribution levels. The plan must cover all eligible employees of the S-Corp, which is why most anesthesiologists structure their professional entity to minimize non-physician employees. The enrolled actuary calculates the permissible contribution range each year based on the projected benefit at retirement age and current interest rate assumptions.

For anesthesiologists who also have W-2 income from a hospital employer, the employee deferral limit ($24,500 or $30,500 with catch-up) is shared across all plans. If the hospital 401(k) has already absorbed the full employee deferral, only the employer profit sharing contribution is available in the Solo 401(k). The cash balance plan contribution is separate and unaffected by the 401(k) deferral limit.

Locum Tenens and Travel Expense Planning

Many anesthesiologists supplement their primary income with locum tenens assignments at hospitals, surgery centers, or pain management clinics. The travel expense deduction rules under §162(a)(2) apply: expenses are deductible if the anesthesiologist is away from their tax home for a temporary assignment (expected to last less than one year).

The tax home for an anesthesiologist is their principal place of business — typically their primary practice location. If the anesthesiologist has no fixed primary practice and works exclusively on locum tenens assignments, the IRS may argue there is no tax home and deny travel deductions entirely. Practitioners should ensure locum tenens clients maintain a primary practice location or home base that qualifies as a tax home.

Deductible Business Expenses for 1099 Anesthesiologists

The self-employed health insurance deduction under §162(l) is particularly valuable. The deduction covers premiums paid for health, dental, vision, and long-term care insurance for the anesthesiologist and their family. It is an above-the-line deduction that reduces adjusted gross income, which in turn can reduce the SSTB phase-out calculation for the QBI deduction. The deduction is limited to net self-employment income and is not available for any month the anesthesiologist was eligible for employer-subsidized health insurance.

Frequently Asked Questions