W-2 vs 1099 Physician Income
Locums recruiters and independent-contractor groups love to tell physicians that 1099 income is a tax bonanza. Sometimes it is. Usually it is a modest advantage that only appears at equal gross pay if you actually use the extra retirement space, and it disappears entirely if the 1099 rate is not meaningfully higher. This guide shows the arithmetic instead of the pitch.
The short answer
At the same gross dollars, W-2 usually wins, because the employer pays half your payroll tax and buys your benefits. A 1099 physician pays both halves of Social Security and Medicare tax, buys their own health, disability, and malpractice coverage, and gets no paid time off. What 1099 buys in exchange is control and shelter: a solo 401(k) with far more contribution room than most employer plans, real business deductions, and possible qualified business income treatment. The honest rule of thumb: a 1099 offer needs to be roughly 10% to 20% higher than the W-2 alternative to break even, more if the W-2 job has a strong match and cheap benefits, and it only pulls ahead if you actually fill the solo 401(k).
What actually changes between W-2 and 1099
A W-2 physician is an employee. The employer withholds taxes, pays the employer half of payroll taxes, sponsors the retirement plan, typically pays for malpractice coverage including tail in many cases, and provides health insurance, disability coverage of some kind, CME money, and paid time off. A 1099 physician is a business. All of those costs and duties transfer to you, and in exchange the paying entity hands over a bigger gross check and no benefits.
The comparison is therefore never "same number, different form." It is one number wearing a full backpack against a bigger number carrying nothing. Everything in this guide is about pricing the backpack.
| W-2 employee | 1099 contractor | |
|---|---|---|
| Payroll tax | You pay the employee half (7.65% up to the wage base, then Medicare only) | You pay both halves via self-employment tax, partially offset by a deduction |
| Retirement plan | Employer 401(k)/403(b), employee deferral limit, plus whatever match and any 457(b) the employer offers | Solo 401(k) you set up yourself: same employee deferral plus an employer contribution of roughly 20% of net earnings, to a combined cap near $72,000 (approximate; check current IRS limits) |
| Health, disability, malpractice | Largely employer-provided or subsidized | You buy all of it; premiums for health and malpractice are generally deductible, individual disability premiums generally are not |
| Paid time off and CME | Built into the salary | Unpaid; a week off is a week of zero revenue |
| Business deductions | Almost none available | Legitimate business expenses reduce taxable income |
| QBI deduction | Not available on wages | Potentially available, but physicians are a specified service business and the deduction phases out at high taxable income; check current rules |
| Tax withholding | Automatic | Your job, quarterly, with penalties for getting it wrong |
| Job protections and unemployment | Employee protections apply | Contract law only |
Self-employment tax, with the math shown
Self-employment tax is the piece everyone has heard of and almost nobody computes correctly, so here it is end to end. The rates: 12.4% for Social Security up to the annual wage base (in the ballpark of $180,000 in recent years, approximate; check current figures) and 2.9% for Medicare on everything, plus the 0.9% additional Medicare tax above $200,000 single or $250,000 married filing jointly. As a W-2 employee you pay half of the first two (6.2% and 1.45%) and your employer pays the other half. As a 1099 physician you pay it all, with two softeners: only 92.35% of net profit is subject to the tax, and half of the tax you pay is deductible against income tax.
Show the math
Assumptions. A 1099 physician with $350,000 of collections and $20,000 of genuine business expenses, so $330,000 of Schedule C net profit. Single filer. Social Security wage base assumed at $180,000 (approximate). Rates: 12.4% Social Security, 2.9% Medicare, 0.9% additional Medicare above $200,000.
Formula. Net earnings subject to SE tax = net profit x 0.9235. SE tax = 12.4% x min(net earnings, wage base) + 2.9% x net earnings + 0.9% x (net earnings above the threshold). Then deduct half of the Social Security and Medicare portion against income tax.
Result. Net earnings = $330,000 x 0.9235 = $304,755. Social Security portion = 12.4% x $180,000 = $22,320. Medicare portion = 2.9% x $304,755 = $8,838. Additional Medicare = 0.9% x $104,755 = $943. Total SE tax roughly $32,100. The deductible half (of the 15.3% components) is about $15,580, which at a 35% marginal rate recovers roughly $5,450 of income tax. Net extra cost versus W-2, where the employer would have paid roughly $13,900 of employer-side payroll tax on a $350,000 salary (capped Social Security plus uncapped Medicare): the 1099 physician bears about $13,900 more payroll tax before the deduction, roughly $8,500 more after it.
Limitations. The wage base and thresholds move every year; an S corporation election changes the computation entirely; state taxes are ignored; and above the wage base the marginal SE tax rate is only 2.9% to 3.8%, so incremental 1099 income at high levels is taxed less brutally than the headline 15.3% suggests.
The takeaway from the math box: the true payroll-tax penalty of 1099 status for a physician earning well above the Social Security wage base is real but bounded, roughly $8,000 to $10,000 a year after the deduction at this income, not the "extra 7.65% of everything" that gets quoted. It is a known, fixed cost you can price into the required rate premium.
The retirement space difference
This is where 1099 earns its keep. A W-2 physician gets the employee deferral, whatever match the employer offers, and, at some hospitals, a 457(b) on top (see the 457(b) guide before counting a nongovernmental one as fully yours). A 1099 physician opens a solo 401(k) and contributes in two capacities: the same employee deferral, plus an employer profit-sharing contribution of roughly 20% of net self-employment earnings, up to a combined cap that has been in the neighborhood of $72,000 in recent years (approximate; check current IRS limits).
For the $330,000-profit physician above, that is the full employee deferral of roughly $24,000 plus an employer piece near $48,000: the cap, essentially. A typical employed physician with a $24,000 deferral and a $12,000 match shelters $36,000. The 1099 physician shelters about $72,000, or double. At a 40% combined marginal rate, the extra $36,000 of deferral is worth roughly $14,400 of deferred tax per year, and unlike a match it scales with your discipline rather than your employer's generosity. A solo 401(k) also keeps the backdoor Roth clean, accepts incoming IRA rollovers, and can be paired with a defined benefit plan at very high stable income. The self-employed retirement guide works all of those mechanics, including the 20%-not-25% trap, and the backdoor Roth guide covers the pro-rata interaction.
Two honest caveats. First, the extra space is only worth something if you have the cash flow and discipline to fill it; a 1099 physician sheltering $36,000 has gained nothing over the employed one. Second, some employed physicians have unusually rich stacks (403(b) plus 457(b) plus match plus a mega backdoor option) that narrow or erase the gap. Count your actual employer stack before assuming the solo 401(k) wins.
Deductions, honestly framed
The 1099 deduction story is real and it is also the most oversold part of the pitch. The rule that cuts through all of it: a deduction refunds your marginal rate on money you actually spent. Spending $10,000 to save $4,000 makes you $6,000 poorer. The only deductions that make you richer are for money you were going to spend anyway or money that stays yours.
What a 1099 physician genuinely deducts: malpractice premiums, health insurance premiums (an above-the-line deduction for the self-employed), licensing, DEA and board fees, CME and its travel, genuinely business-use equipment and software, a home office if it is really your administrative base, business mileage between work sites, retirement plan contributions, and half of self-employment tax. On a typical contractor these total $15,000 to $30,000 a year of expenses, most of which a W-2 physician either does not pay at all (the employer covers them) or pays without a deduction. So the fair framing is: the deductions mostly convert the backpack of costs you took on from after-tax to pre-tax. They soften the burden of self-employment; they do not create free money.
The qualified business income (QBI) deduction deserves its own sentence of honesty: physicians are a specified service trade or business, and the deduction phases out at higher taxable income, so a full-time attending contractor frequently gets little or none of it. A part-time or moonlighting physician with lower total taxable income may capture it. Check the current-year thresholds rather than assuming.
And a warning from the parent guide worth repeating: the aggressive end of "1099 tax strategies" (leasing your car through the business, hiring your toddler, captive insurance) is where audits live. The Physician Finance Playbook and the high earner tax guide both cover how to tell a deduction from a sales pitch.
Quarterly estimated taxes
Nobody withholds for a contractor, and the IRS does not wait until April. You owe estimated payments four times a year (roughly mid-April, mid-June, mid-September, and mid-January), and underpaying triggers an interest-based penalty. The reliable approach is the safe harbor: pay in, through the year, at least 110% of last year's total tax (the threshold for higher earners), in four equal installments, and settle any remainder at filing. Alternatively pay 90% of the current year's tax as you go, which requires forecasting.
Practical system: open a separate business checking account, sweep a fixed percentage of every deposit (for most attending-level contractors, 30% to 40% depending on state) into a tax sub-account, and pay quarterlies from it electronically. The first year is the dangerous one, because there is no withholding history and the April bill arrives alongside the first quarterly payment for the new year. Physicians switching from W-2 to 1099 mid-career should have a CPA run the first year's projections; this is one of the places a few hundred dollars of professional help reliably pays for itself.
Head to head: the same $350,000 under each
Now the whole comparison in one table. Same physician, same $350,000 of gross compensation, single filer, moderate-tax state assumed at a flat 5%. The W-2 job includes a $12,000 match, employer-paid malpractice, and group health worth about $9,000. The 1099 physician pays $18,000 of malpractice and health premiums and $8,000 of other genuine business costs, and maxes a solo 401(k). Figures are rounded and use approximate recent limits; this is mechanics, not a tax return.
| W-2 at $350,000 | 1099 at $350,000 | |
|---|---|---|
| Gross compensation | $350,000 salary | $350,000 collections |
| Benefits received on top | $12,000 match + employer-paid malpractice and health (roughly $24,000 value) | None |
| Business expenses | $0 (employer pays) | $26,000 (malpractice, health, other) |
| Net profit / taxable wages before retirement | $350,000 | $324,000 |
| Payroll / SE tax borne by the physician | roughly $17,000 | roughly $31,600, less a $15,300 deduction worth about $5,400 |
| Retirement sheltered pre-tax | $24,000 deferral + $12,000 match = $36,000 | Solo 401(k) maxed near $72,000 |
| Approximate federal + state income tax | roughly $89,000 | roughly $71,000 (smaller base after expenses, SE tax deduction, and the larger retirement contribution) |
| Cash in pocket after tax, expenses, and retirement savings | roughly $184,000 spendable + $36,000 sheltered | roughly $154,000 spendable + $72,000 sheltered |
| Total wealth position (spendable + sheltered + match) | roughly $220,000 | roughly $226,000 |
Read the last two rows together, because they are the entire debate. At identical gross, the 1099 physician ends the year with a slightly higher total wealth position, but only because $72,000 of it is locked in a retirement account; monthly spendable cash is meaningfully lower, and the position came with quarterly tax filings, self-purchased benefits, zero paid vacation, and no employer match. Shelter $36,000 instead of $72,000 and the 1099 column falls clearly behind. And this table generously ignored paid time off: give the W-2 physician four paid weeks and the equivalent 1099 rate needs to rise roughly 8% before anything else is counted.
When 1099 wins, and when it does not
1099 tends to win when: the rate premium is real (the same work pays 15% to 30% more than the employed alternative), you will actually max the solo 401(k) and possibly stack a defined benefit plan on top, you already carry your own disability policy and are comfortable buying health coverage, you value schedule control and multi-site flexibility, and you are organized enough to run quarterlies without drama. Moonlighting on the side of a W-2 job is also a quiet 1099 win: even modest contractor income opens a solo 401(k) employer contribution and legitimate deductions on top of a full employer plan.
W-2 tends to win when: the gross numbers are similar, the employer stack is rich (strong match, cheap health coverage, employer-paid tail, a governmental 457(b)), you want PSLF, which requires qualifying employment and is usually incompatible with contractor status, you will not reliably fill the extra retirement space, or you simply do not want to run a small business on top of practicing medicine. Loan forgiveness deserves bold text: if you are on the PSLF path, taking a 1099 job usually forfeits years of banked credit, and no plausible tax advantage recovers that.
The neutral summary: 1099 is not a tax trick, it is a small business with a rate premium attached. Priced correctly and administered well, it comes out modestly ahead for disciplined savers. Priced at parity, it is a pay cut with paperwork. Model your own two offers with the retirement and tax calculators, and see who we help for the broader physician library. This is education, not individualized tax advice; the first year of contractor income is a genuinely good time to hire a CPA.