The pitch is delivered with confidence, usually by someone who earns a fee when you accept it. Elect S corporation status, pay yourself a modest salary, take the rest of your practice profit as distributions, and the 15.3 percent self-employment tax simply stops applying to most of your income. On $300,000 of profit that sounds like $30,000 a year.
It is not $30,000 a year. For a physician it is more often $3,000, and sometimes it is a net loss after the costs of maintaining the structure. The reason is specific to medicine and worth understanding precisely, because the S corporation is a real tool that works for some independent physicians and is a fee generator for others — and the variable that decides which is not your income.
The mechanics take one paragraph; the arithmetic takes the rest of the article
You form an entity — usually an LLC — and file Form 2553 to elect S corporation treatment, generally within two months and 15 days of the beginning of the tax year it should apply to, with late-election relief available under Rev. Proc. 2013-30. The entity becomes your employer: it runs payroll, issues you a W-2, remits FICA on those wages, and files Form 1120-S annually. Remaining profit passes through on a Schedule K-1 as a distributive share, taxed as ordinary income but not subject to self-employment tax or FICA.
That last clause is the entire benefit. Everything else — the income tax you pay, the deductions you claim, the retirement plan you use — works substantially as it did on a Schedule C.
Above the wage base, the escape is 3.8 cents on the dollar, not 15.3
Here is the fact that reframes the whole calculation, and it is routinely omitted from the pitch.
The 15.3 percent figure is two taxes bundled together: 12.4 percent for Social Security, which applies only up to the wage base — $184,500 for 2026 — and 2.9 percent for Medicare, which has no ceiling. Above $200,000 of wages or self-employment earnings for a single filer ($250,000 married filing jointly), an additional 0.9 percent Medicare tax applies to the employee side only.
A physician earning $300,000 blows past the Social Security wage base on salary alone. The 12.4 percent is already fully paid before a single dollar of distribution is considered. For a physician whose reasonable salary by itself exceeds the $184,500 wage base, a distributed dollar escapes only the 2.9 percent Medicare tax plus the 0.9 percent additional Medicare tax — 3.8 cents, not 15.3 cents. The dramatic version of the S corporation pitch is calibrated for someone earning $80,000, where the 12.4 percent is genuinely in play. It does not translate upward.
Reasonable compensation for a physician is the clinical market rate
The second constraint is doctrinal, and it bites harder in medicine than in almost any other field.
An S corporation must pay reasonable compensation to a shareholder-employee for services rendered before making non-wage distributions. The IRS may recharacterize distributions as wages when they are in substance payment for personal services, and it has won repeatedly. In David E. Watson, P.C. v. United States (8th Cir. 2012), an experienced CPA paid himself $24,000 in salary while taking distributions of $203,651 and $175,470 in successive years. The court accepted the government's expert valuation of $91,044 as reasonable and subjected an additional $67,044 to FICA, reasoning from economic substance rather than chosen form.
The IRS lists the factors it weighs: training and experience; duties and responsibilities; time and effort devoted to the business; dividend history; payments to non-shareholder employees; timing and manner of bonuses; what comparable businesses pay for similar services; compensation agreements; and use of a formula.
Apply those to a solo physician and the conclusion is uncomfortable. Your training is extensive, your duties are the practice, your time is fully devoted, and comparable compensation for your specialty is a published, well-surveyed number any examiner can retrieve in an afternoon. The profit of a solo clinical practice is almost entirely compensation for personal services — there is no meaningful return on capital or on the labor of others to allocate to a distribution. A practice that employs several physicians, owns imaging equipment, or generates ancillary revenue has a genuine argument that some profit is a return on capital. A solo physician generating revenue by seeing patients personally does not.
Important
The distribution slice must be defensible on its own terms, not backed into from a target savings number. If your specialty's market compensation is $280,000 and your practice profits are $300,000, your defensible distribution is roughly $20,000 — not the $150,000 the spreadsheet in the sales presentation assumed. Setting salary by working backward from desired tax savings is precisely the pattern that produced the Watson result.
The worked example at $300,000, run honestly
Example calculation
Assumptions, stated explicitly: single filer, independent physician, $300,000 of net practice profit, 2026 rules, Social Security wage base $184,500, additional Medicare threshold $200,000. Federal and state income tax are identical under both structures and are therefore excluded — only employment taxes differ.
Baseline: sole proprietor / single-member LLC on Schedule C
- Net earnings from self-employment: $300,000 × 0.9235 = $277,050
- Social Security portion: 12.4% × $184,500 = $22,878
- Medicare portion: 2.9% × $277,050 = $8,034
- Additional Medicare Tax: 0.9% × ($277,050 − $200,000) = $693
- Total employment tax: $31,605
Scenario A: S corporation, $200,000 salary, $100,000 distribution
- Social Security, both halves: 12.4% × $184,500 = $22,878
- Medicare, both halves: 2.9% × $200,000 = $5,800
- Additional Medicare Tax: $0 (wages do not exceed $200,000)
- Total employment tax: $28,678
- Gross saving: $31,605 − $28,678 = $2,927
Scenario B: S corporation, $150,000 salary, $150,000 distribution
- Social Security, both halves: 12.4% × $150,000 = $18,600
- Medicare, both halves: 2.9% × $150,000 = $4,350
- Total employment tax: $22,950
- Gross saving: $31,605 − $22,950 = $8,655
Scenario B produces triple the saving of Scenario A and is the one that appears in sales material. It is also the one that requires arguing a $150,000 reasonable salary for a physician generating $300,000 of profit through personal clinical services.
The overhead is not a rounding error at these amounts
The gross saving is not the saving. An S corporation carries recurring costs that a Schedule C does not:
| Cost | Typical annual range |
|---|---|
| Payroll service (filings, W-2, quarterly returns) | $600 – $1,200 |
| Form 1120-S preparation, above Schedule C cost | $1,000 – $2,500 |
| State franchise tax or entity-level fee | $0 – $800+ |
| Registered agent and annual report | $50 – $300 |
| Total | $1,650 – $4,800 |
Take $3,000 as a representative figure. Scenario A's $2,927 gross saving becomes a net loss of roughly $73 — you have added a second tax return, a payroll obligation, and an audit-exposed position in exchange for nothing. Scenario B's $8,655 becomes about $5,655, which is real money for real added exposure.
There is a further cost that rarely appears in the comparison, and for high earners it can exceed all of the above.
Example calculation
Assumptions, stated explicitly: $300,000 of profit, 2026 limits — $24,500 elective deferral, $72,000 total annual additions under §415(c), no catch-up (under age 50). Employer contributions to a solo 401(k) are limited to 25% of W-2 compensation for an S corporation.
As a sole proprietor: employer contribution ≈ 20% of profit net of half the self-employment tax ≈ $56,800, plus the $24,500 deferral, which exceeds the cap — so the full $72,000 is reachable.
As an S corporation with a $150,000 salary:
- Employer contribution ceiling: 25% × $150,000 = $37,500
- Plus elective deferral: $24,500
- Total reachable: $62,000
A low salary costs $10,000 of tax-deferred space — worth roughly $4,000 in current-year tax at a 35% federal and 5% state rate. That erases most of Scenario B's advantage.
Lower W-2 wages also reduce your credited Social Security earnings, which modestly reduces your eventual benefit. That effect is small and distant, but it is not zero.
Qualified business income: the wage lever physicians do not have
This is the most commonly garbled part of the analysis, so state it precisely.
For most pass-through businesses, §199A(b)(2)(B) limits the 20 percent qualified business income deduction to a figure based on W-2 wages paid — which gives the owner a genuine reason to pay higher wages. An S corporation is the standard way to create those wages. That is a real strategy, and it is one of the better arguments for the election.
It does not apply to physicians. The practice of medicine is a specified service trade or business: §199A(d)(2)(A) incorporates the fields listed in §1202(e)(3)(A), which include health, and Treas. Reg. §1.199A-5(b) confirms that physicians performing medical services fall within it. Under §199A(d)(3)(A), an SSTB is treated as a qualified trade or business only while taxable income remains below the threshold plus the phase-in range. Above that ceiling, the SSTB is excluded entirely.
For 2026 (Rev. Proc. 2025-32, §4.26):
| Filing status | Threshold | Fully phased out above |
|---|---|---|
| Single and other returns | $201,750 | $276,750 |
| Married filing jointly | $403,500 | $553,500 |
| Married filing separately | $201,775 | $276,775 |
The One Big Beautiful Bill Act (Pub. L. 119-21) widened the phase-in range from $50,000 to $75,000 for single filers and from $100,000 to $150,000 for joint filers, which is a genuine improvement for physicians near the bottom of the band. It does not change the outcome at the top.
A physician with taxable income above $276,750 single or $553,500 joint receives no qualified business income deduction at all, which means the W-2 wage limitation is irrelevant and paying yourself more salary buys nothing in QBI terms. The $400 minimum deduction added by OBBBA at §199A(i) does not rescue this either — it requires qualified business income from an active qualified trade or business, and an SSTB above the range is not one.
One precise exception: if your taxable income lands inside the phase-in range — a physician working part time, a high-deduction year, a spouse with no income — a partial QBI deduction survives, and there the interaction between wages and the deduction becomes genuinely intricate and worth modeling with a preparer rather than a rule of thumb.
When the election is real, and when it is a fee
The S corporation earns its keep when the profit is not purely your own clinical labor:
- Practice profit substantially exceeds market compensation for your specialty, because you employ other clinicians, own the facility, or run ancillary services. The excess is a return on capital and labor other than your own, and it is defensibly a distribution.
- Profit is high and stable enough that a defensible distribution above roughly $75,000 remains after paying market salary — that is approximately where the 3.8 percent saving clears $3,000 of overhead with margin.
- You already need payroll for employees, so the marginal administrative cost is small rather than a new fixed expense.
Quick takeaway
The single question that decides the election is not how much you earn. It is how much of your profit is payment for something other than your own clinical labor. Employed clinicians, owned equipment, and ancillary revenue create a defensible distribution; a solo physician seeing patients personally has almost none. Run the three-line test: market salary for your specialty, subtract it from practice profit, multiply the remainder by 3.8 percent, and compare that to roughly $3,000 of annual overhead.
It is a fee generator when profit is under roughly $200,000, when you are a solo clinician whose entire revenue derives from your own patient encounters, or when the proposal's savings estimate applies 15.3 percent to income already above the wage base. That last error is diagnostic. If the presentation shows 15.3 percent savings on distributions for a physician earning over $184,500, the person presenting it either does not understand the wage base or is relying on you not to.
The broader question of when practice ownership itself makes sense is worked through in practice ownership economics, and the underlying employment-structure decision in W-2 versus 1099. The entity-level details — payroll setup, accountable plans, the >2 percent shareholder health insurance rule under which premiums are added to your W-2 wages and then deducted under §162(l) — are covered in S corporations for physicians.
Common questions
What salary percentage is safe? I keep hearing 60/40.
There is no statutory percentage, and rules of thumb like 60/40 or 50/50 have no legal standing — the standard is what comparable businesses pay for similar services. For a physician that means specialty compensation survey data for your region and productivity. Start from the survey figure, not from a ratio. A compensation study costs a few hundred dollars and is the document you would want to hold under examination.
What happens if the IRS says my salary was too low?
The distributions are recharacterized as wages, and you owe the employment taxes on them plus interest and potentially accuracy-related penalties. The Watson outcome — $67,044 of distributions reclassified — is the shape of it. Note what does not happen: the election is not usually revoked. It is a valuation dispute, not a structural one.
Does the S corporation change my deductions?
Not materially. The same ordinary-and-necessary standard under §162 governs, and the same expenses qualify; they simply appear on Form 1120-S rather than Schedule C. A few items change form — health insurance for a more-than-2-percent shareholder must run through W-2 wages, and unreimbursed expenses need an accountable plan. The substance is unchanged, and the deduction landscape is mapped in the 1099 deduction guide.
How much extra compliance work is this really?
An additional return due March 16, 2026 for a calendar-year entity, quarterly payroll filings, annual W-2s and K-1s, and a state annual report. The late-filing penalty on Form 1120-S is $255 per month per shareholder for up to 12 months, plus $340 per late or incorrect Schedule K-1 — penalties that accrue for missing a deadline rather than for owing tax, which is a category of risk a Schedule C simply does not carry.
What to do next
- Write down your practice profit and your specialty's market compensation from survey data. The difference between them is the entire opportunity; if it is under $75,000, stop here.
- Multiply that difference by 3.8 percent if your salary would exceed $184,500, or by 15.3 percent only for the portion of salary below it. That is your honest gross saving.
- Get quoted prices for payroll service and 1120-S preparation in your area, and look up your state's entity-level fee. Subtract the total.
- Compute the retirement contribution you could make under each structure. If the S corporation salary caps your solo below what a Schedule C would allow, subtract that cost too.
- If the net is still positive by a comfortable margin, commission a written reasonable-compensation study before the first payroll runs — not after a letter arrives.
- Revisit the arithmetic each year. The election that made sense at $500,000 of profit with two employed clinicians stops making sense the year you go back to solo practice.
The S corporation is neither a scheme nor a universal answer; it is a structure whose value depends almost entirely on how much of your profit is something other than payment for your own clinical work. For most solo physicians that fraction is small, and the honest answer is that the election is not worth its overhead. If running these numbers against your own practice is useful, the tools here handle it, though the protocol above works with or without us. This is education, not individualized financial advice.