W-2 vs 1099 for CRNAs: What the Difference Actually Means
When you take a locums contract, you stop being a W-2 employee and become a 1099 independent contractor. That one change touches nearly every part of your financial life: how you're taxed, what you take home, how much you can save for retirement, and who covers your malpractice. Here's what it actually means in practice.
The Basic Distinction
A W-2 employee has taxes withheld automatically from each paycheck. Your employer handles the paperwork, splits the Social Security and Medicare tax with you, and sends a W-2 form at the end of the year showing what you earned and what was withheld.
A 1099 independent contractor gets paid the full contracted amount with nothing withheld. No taxes are taken out. You're responsible for estimating and paying your own taxes quarterly, and at year end you receive a 1099 form showing gross payments. You're also responsible for the employer's share of Social Security and Medicare tax, not just your own half.
That second point is where most people get surprised. When you're an employee, your employer quietly pays 7.65% of your wages into Social Security and Medicare on your behalf. As a 1099 contractor, you pay both sides: the full 15.3%, out of your own pocket. That's called self-employment tax, and it's the single biggest financial difference between the two classifications.
Side-by-Side Comparison
| Category | W-2 Employee | 1099 Contractor |
|---|---|---|
| Tax withholding | Automatic each paycheck | None. You pay quarterly estimates. |
| Social Security & Medicare | You pay 7.65%, employer pays 7.65% | You pay the full 15.3% |
| Health insurance | Usually employer-sponsored | You buy your own (individual market) |
| Malpractice insurance | Employer provides | Contract-dependent. Confirm before signing. |
| Retirement contributions | Up to $23,500/yr (401k) | Up to $70,000/yr (Solo 401k) |
| PTO and sick leave | Included | None. Every day off is unpaid. |
| CME allowance | Often included ($2,000-$5,000/yr) | Negotiated per contract or self-funded |
| Business expense deductions | Very limited | Broad: malpractice, health insurance, home office, travel, equipment |
| Job security | Ongoing employment | Contract-by-contract |
What Happens to Your Take-Home Pay
The gross rate on a locums contract is almost always higher than a staff salary, sometimes significantly. A CRNA staff position paying $140,000 per year might have a locums equivalent offering $130 to $160 per hour. That looks like a major raise. The actual difference in take-home is narrower than the numbers suggest.
Here's why. As a 1099 contractor you're paying self-employment tax on top of income tax, buying your own health insurance, and covering any gaps in malpractice, CME, and benefits. Run those numbers against your gross contract rate and the real advantage, if there is one, is smaller than the headline rate implies.
W-2 staff position: $140,000 salary + $28,000 benefits = $168,000 total compensation. Federal and state income tax roughly $32,000. Net take-home approximately $136,000 including benefits.
Locums 1099: $130/hr x 40 hrs x 46 weeks = $239,200 gross. Subtract self-employment tax ($20,400), health insurance ($18,000), malpractice ($5,000), other expenses ($8,000). Taxable income roughly $188,000. Federal and state tax approximately $48,000. Net take-home approximately $140,000.
The locums contract pays $100,000 more gross but nets only about $4,000 more after accounting for the costs of being 1099. At a lower rate or with higher expenses, the staff position comes out ahead.
This is exactly why running the actual numbers matters before you decide. The gross rate is a starting point, not the answer.
Run your own W-2 vs 1099 comparison
Plug in your actual staff salary and a locums rate you're considering. The calculator accounts for self-employment tax, benefits costs, malpractice, and housing stipends.
Open Free CalculatorTaxes: The Quarterly Estimate Problem
One of the biggest practical adjustments when going 1099 is that nobody withholds taxes for you. If you don't plan for it, you can end up owing a large tax bill in April with penalties on top for underpaying throughout the year.
The IRS expects 1099 contractors to pay estimated taxes four times per year: in April, June, September, and January. A reasonable starting point is to set aside 25 to 30 percent of every payment you receive and put it in a separate account. If you're in a high-tax state or earning well into six figures, 30 to 35 percent is safer.
You can also deduct half of your self-employment tax from your gross income, which reduces your taxable income slightly. Your CPA will handle this when they file, but it's worth knowing it exists.
Retirement: Where 1099 Has a Real Advantage
This is where being a 1099 contractor can genuinely pay off over the long run. A W-2 employee can contribute up to $23,500 per year to a workplace 401k in 2025. A 1099 contractor with a Solo 401k can contribute up to $70,000 per year.
The difference is the employer contribution. As a 1099 contractor you're both the employee and the employer. You can contribute $23,500 as the employee, then contribute up to 20 to 25 percent of your net income as the employer side. All pre-tax, all compounding tax-deferred.
For a CRNA earning $200,000 net as a 1099 contractor, a Solo 401k could allow contributions of $23,500 plus roughly $40,000 in employer contributions, totaling $63,500 sheltered in a single year. A W-2 CRNA at the same income level caps out at $23,500. That gap, compounded over a career, is substantial.
One thing to know: Solo 401k plans that allow after-tax contributions (for the Mega Backdoor Roth strategy) aren't available through Fidelity or Vanguard's free plans. You need a custom plan from a provider like MySolo401k.net or Rocket Dollar, which typically costs $100 to $300 per year. Still worth it at most income levels.
Malpractice: Don't Assume It's Covered
W-2 employees are almost universally covered by their employer's malpractice policy. You don't think about it, you don't pay for it, and it's not a variable in your financial planning.
As a 1099 contractor, malpractice coverage is a contract-by-contract question. Many locums agencies include it, but you need to confirm the type of policy (occurrence vs claims-made) and whether tail coverage is included before you sign anything.
Occurrence-based policies cover any claim arising from an incident during the policy period, regardless of when the claim is filed. Claims-made policies only cover claims filed while the policy is active. If you're on a claims-made policy and your contract ends, you need tail coverage: separate insurance that extends your protection forward. Tail coverage for CRNAs typically runs $5,000 to $20,000 depending on specialty and years of coverage.
If your contract is silent on malpractice, ask before you sign. The contract review post covers this in more detail.
Benefits: The Hidden Cost of Going 1099
W-2 employment comes with a package that's easy to undervalue until it's gone. Health insurance, dental, vision, disability coverage, life insurance, PTO, CME allowance, retirement matching. Collectively these can represent $25,000 to $40,000 in annual value for a full-time staff CRNA.
As a 1099 contractor you replace most of these on your own dime. Individual market health insurance for a family runs $15,000 to $22,000 per year depending on coverage level and state. Disability insurance is often overlooked. If you're injured and can't work, there's no employer short-term disability coverage to fall back on.
None of this means 1099 is the wrong choice. It means you need to price these costs into your analysis before comparing offers, not after.
The Bottom Line
W-2 and 1099 aren't inherently better or worse. They're different structures with different tradeoffs. W-2 is simpler, more predictable, and comes with built-in protections. 1099 offers more income potential, dramatically higher retirement contribution limits, broader expense deductions, and flexibility, but it requires you to actively manage taxes, benefits, and insurance that your employer used to handle.
The question isn't which classification sounds better. It's whether the specific contract in front of you, with its actual rate and actual costs, nets more than what you have now. That's a math problem, not an opinion.