Physician Tax Strategy: Reducing Your Tax Burden in the High-Income Years

Content verified against 2026 IRS limits, OBBBA changes, and current tax law. For informational purposes only — see a fee-only advisor for guidance specific to your situation.

The physician tax gap

Your income looks better on paper than it feels in practice. After federal income tax, FICA, state taxes, and loan payments, a physician earning $350,000 often takes home $185,000-$210,000. Specialists at $600,000-$800,000 can lose 45-50 cents of each marginal dollar to combined federal and state tax.

There is no trick that changes the brackets. But the gap between a physician who plans and one who doesn't can be $50,000-$150,000 per year in after-tax income — compounded over a 25-year career, the difference is substantial. The levers below are the ones fee-only advisors actually use.

Lever 1: Retirement account stacking

Pre-tax retirement contributions reduce your taxable income dollar-for-dollar. For physicians in the 32-37% federal bracket, each dollar contributed saves 32-37 cents in federal tax immediately — plus state tax savings on top.

Employed physicians (W-2)

The base stack:¹

• 401(k) employee deferral: $24,500 in 2026 ($32,500 if age 50-59 or 64+; $35,750 if age 60-63)
• 457(b) plan (common in nonprofit hospital systems): an additional $24,500 — this is a completely separate limit from the 401(k)
• HSA: $4,400 self-only / $8,750 family (2026, if enrolled in a qualifying high-deductible plan) — triple tax-advantaged: deductible contribution, tax-free growth, tax-free withdrawal for medical expenses

A hospital-employed physician with access to a 401(k) + 457(b) + HSA (family) can shelter $57,750 of gross income per year without doing anything unusual. Employer matching contributions are on top of that.

Self-employed physicians (1099, private practice, moonlighting)

A solo 401(k) (also called an individual 401(k) or self-employed 401(k)) combines the employee deferral with an employer profit-sharing contribution of up to 25% of W-2 compensation (or 20% of net self-employment income for sole proprietors).¹

• Total combined limit: $72,000 (2026, under age 50); $80,000 if age 50-59 or 64+; $83,250 if age 60-63

Example: A private practice internist netting $280,000 of self-employment income could contribute $24,500 (employee deferral) + $56,000 (25% employer profit-sharing on the S-corp W-2 equivalent) = $72,000 to a solo 401(k) — sheltering roughly 26% of gross income from tax this year.

Adding a cash balance plan

For physicians age 45+, a defined benefit cash balance plan can shelter $100,000-$300,000+ per year beyond the solo 401(k) limit. The exact amount depends on age, income, and plan design. A fee-only advisor who works with practice owners can model whether the setup costs (actuarial fees, administration) are worth it at your income level.

Lever 2: The S-corp election

If you earn 1099 income — through moonlighting, locum tenens, independent contractor arrangements, or private practice ownership — the S-corp election reduces your self-employment tax exposure.

How it works

As a sole proprietor, 100% of your net self-employment income is subject to SE tax (15.3% to the Social Security wage base, 2.9% above it, plus the 0.9% Additional Medicare Tax surcharge). With an S-corp:

1. You elect S-corp tax treatment on your LLC or corporation
2. You pay yourself a reasonable W-2 salary
3. Remaining profits pass through as S-corp distributions
4. FICA taxes apply only to the salary portion — not to distributions

The reasonable salary requirement is real. The IRS scrutinizes S-corps whose officer compensation is below market. For a physician earning $400,000+ in professional fees, most tax advisors set the salary at $120,000-$175,000. Setting it too low is an audit risk. Setting it too high reduces the SE tax benefit unnecessarily.

There's also a solo 401(k) tradeoff: the employer profit-sharing contribution is based on W-2 wages in an S-corp. A higher salary enables a larger employer contribution (up to the $72,000 combined limit), while a lower salary saves more on FICA. The optimal balance depends on your specific numbers — this is exactly the modeling a fee-only advisor does.

Lever 3: The backdoor Roth IRA

Most attending physicians cannot contribute directly to a Roth IRA. In 2026, the MAGI phase-out for married filing jointly starts at $242,000 and closes at $252,000.² Most attendings exceed this in year one.

The two-step workaround

1. Contribute $7,500 to a traditional IRA (no income limit on contributions — only on deductibility)
2. Convert the traditional IRA to Roth shortly after funding

Because the contribution was non-deductible (you took no tax deduction), there's no income tax on the conversion — assuming no pre-existing pre-tax IRA balance. Done annually for both spouses, that's $15,000 per year in tax-free compounding added to your retirement picture.

The pro-rata rule trap

If you have existing pre-tax traditional IRA money (from a rollover or prior deductible contribution), the IRS treats all your traditional IRA funds as a pool when calculating the taxable portion of a conversion. Example: $90,000 in a rollover IRA + $7,500 non-deductible contribution = only 7.7% of the conversion is tax-free.

The solution: Roll pre-tax IRA funds into your employer 401(k) before executing the backdoor Roth. Most 401(k) plans accept incoming rollovers. This clears the pre-tax IRA balance and makes the backdoor Roth clean. If your plan doesn't accept rollovers, work with an advisor to explore alternatives before converting.

Lever 4: The QBI deduction and the SSTB ceiling

Under the OBBBA (signed July 2025), the Section 199A qualified business income (QBI) deduction is now permanent at 23% of qualified business income — an increase from the 20% that applied under the original TCJA.³

The catch for physicians: medicine is a "specified service trade or business" (SSTB), which means the deduction phases out above a taxable income threshold.

For a surgeon netting $900,000, the QBI deduction is almost certainly gone. But for a physician with $480,000 of net income who aggressively contributes to a solo 401(k) plus a defined benefit plan, it may be possible to reduce taxable income below $394,600 — unlocking some or all of the 23% deduction. Whether the math works depends on your specific income, filing status, and deductions. This is worth modeling before you assume the deduction is unavailable.

Lever 5: The residency Roth conversion window

Residency and fellowship may be the only years in a physician's career when their income is low enough to be in a genuinely low tax bracket. At $65,000-$85,000 of W-2 income, you're in the 22% federal bracket. That gap doesn't reappear once you become an attending.

During training, two strategies make sense that become permanently unavailable later:

• Direct Roth IRA contributions: At resident income levels, you're under the phase-out threshold and can contribute directly to a Roth IRA without the backdoor workaround.
• Roth conversions of pre-tax retirement funds: If you have 401(k) or IRA funds from prior employment, converting them during residency at 22% federal rather than 37% during peak earning years is a compelling asymmetry. A $30,000 conversion costs $6,600 in federal tax during residency. Left to grow for 30 years and withdrawn in retirement at 37%, the same amount would cost $84,000+ in taxes. The early conversion is worth the immediate bill.

Lever 6: Deductions physicians often miss

• CME and professional development: Course fees, board prep, conference registration — deductible for self-employed physicians as business expenses. Employed physicians may need to use the less favorable employee business expense treatment (subject to 2% AGI floor and other limitations at the state level).
• Malpractice insurance premiums: Deductible as a business expense if self-employed.
• DEA license and state medical licenses: Deductible professional expenses when self-employed.
• Home office (telehealth): If you see patients remotely from a dedicated room in your home, that space may qualify as a home office deduction. The room must be used regularly and exclusively for business.
• Disability insurance premiums (self-paid): Not deductible — but if you pay the premiums personally rather than through a pre-tax employer plan, any benefit you receive is tax-free. If your employer pays, the benefit is taxable. This is a structuring decision worth discussing with an advisor before buying.
• Practice equipment and Section 179: Under OBBBA, 100% bonus depreciation is restored permanently for qualifying property placed in service after January 19, 2025. Practice owners can immediately expense major equipment purchases rather than depreciating over years.

What a fee-only advisor actually does on physician taxes

A CPA files the return. A fee-only financial advisor does the planning that makes the return look different — before year-end, not after.

Specifically, a physician-specialist advisor:

• Models whether an S-corp election saves money net of setup and annual compliance costs at your specific income level
• Runs backdoor Roth scenarios and identifies pro-rata issues before you convert
• Coordinates retirement account strategy with your CPA so both accounts are maximized correctly
• Identifies whether maxing retirement contributions could pull your taxable income into the QBI deduction range
• For practice owners: models cash balance plan design and actuarial projections
• Identifies Roth conversion opportunities, particularly during residency or any year when your income dips

The fee-only model matters here. A commission-based advisor has financial incentives attached to the products they recommend. A fee-only advisor's only financial incentive is keeping you as a client — which means getting the planning right.

Sources

1. IRS — 2026 Retirement Plan Contribution Limits. 401(k) deferral $24,500, combined solo 401(k) limit $72,000, IRA limit $7,500.
2. IRS Notice 25-67 — 2026 Roth IRA Income Limits. MFJ phase-out $242,000-$252,000 MAGI.
3. Tax Foundation — OBBBA Section 199A Changes. 23% QBI deduction, SSTB MFJ phase-out $394,600-$544,600 taxable income for 2026.
4. Kitces — OBBBA Year-End Tax Planning. Roth conversion analysis, QBI SSTB phase-out implications.
5. IRS — One-Participant 401(k) Plans. Solo 401(k) employee deferral + employer profit-sharing rules.

Tax values verified against 2026 IRS limits and post-OBBBA rules (July 2025). Tax law changes frequently — confirm current limits with your advisor before acting.