I've seen it happen dozens of times. A burned-out resident finishes training, grabs a lucrative locum tenens gig, and sees their first paycheck. They notice the "travel stipend" line item. Tax-free. Pure profit. They think they've hacked the system and found a loophole to pad their early attending income.
They haven't. They've just walked blindly into an IRS meat grinder.
The dangerous assumption is that just because a locum agency labels a payment as a "stipend" or "per diem" on your pay stub, the IRS will respect that classification. They won't. The IRS doesn't care what the staffing agency calls it. They care how you treat it on your tax return. Independent contractor physicians are prime targets for aggressive audits. You get a 1099, you have high earnings, and you have a history of abusing travel deductions. The burden of proof is entirely on you.
This content is for educational purposes only. It is not financial advice, not legal advice, and not tax advice. Figures vary based on individual circumstances, so consult a qualified professional before making decisions.
The Dangerous Assumption: Why Locum Tenens Stipends Get Audited
The locum agency sells you on the idea of tax-free stipends. It's a great recruiting tool. But the agency isn't the one who gets to define taxable income, the IRS does.
When you work as an independent contractor, you're running a business. The IRS scrutinizes 1099 workers far more heavily than W-2 employees. Why? Because they know independent contractors routinely abuse deductions and misclassify income. When you add travel stipends to the mix, you might as well paint a target on your back.
Here is the brutal truth: Treating stipends as "extra cash" without a structured, legal paper trail will result in devastating back-tax penalties. I've seen it happen. A physician works for a year, spends the stipend money on lifestyle upgrades, and gets hit with an audit three years later. The IRS reclassifies every single stipend as ordinary taxable income. Now they owe taxes on that money, plus interest, plus accuracy penalties. It wipes out their savings.
Red flags that trigger these audits include:
- Filing a Schedule C with massive travel deductions but low reported net income.
- Working in a single location for over a year while claiming a distant tax home.
- Failing to keep contemporaneous receipts (credit card statements don't count).
- Mismatched 1099 income versus actual deposits.
The agency will not protect you. They will hand over their records to the IRS and walk away. You need to protect yourself.
The Tax Home Trap: Where Most Physicians Fail
If you want to claim tax-free travel stipends, you must have a legitimate tax home. This is where most locum physicians fail miserably.
The IRS has a specific, legal definition of a "tax home." It is not your parents' spare bedroom. It is not your spouse's apartment if you aren't paying fair-market rent. Your tax home is your main place of business, regardless of where you live.
The mistake is thinking that constantly moving exempt you from this rule. It doesn't. If you are a "traveling doctor" with no fixed practice, the IRS considers you an itinerant (or peripatetic) physician.
Here is how the IRS dismantles the peripatetic physician defense: If you have no main place of business, the IRS looks for your regular place of abode. If you don't maintain a legitimate, high-cost permanent residence that requires you to duplicate living expenses while on assignment, you lose. Period. Your tax home becomes wherever you currently are. And if your tax home is where you're working, your travel costs to get there are not deductible. Your stipends are 100% taxable.
To survive an audit, you must prove duplicated living expenses. This means you are paying for a permanent residence at your tax home and paying for lodging while on assignment.
The IRS will look for:
- A mortgage or a binding lease in your name.
- Utility bills in your name.
- Voter registration and driver's license matching your claimed tax home.
- Bank accounts in that jurisdiction.
If you claim a tax home in a state with no income tax (like Texas or Florida) but you actually live out of a suitcase and spend 11 months a year working in California, the IRS will reclassify your income. They will tax you as a resident of the state where you physically performed the work. Don't play games with this.
The One-Year Rule Violation: Outstaying Your Welcome
The IRS allows you to deduct travel expenses for a temporary assignment away from your tax home. The keyword is temporary. The IRS defines temporary as one year or less.
This is the silent killer of locum finances: the 365-day rule. If your assignment is expected to last, or actually lasts, more than one year, it is no longer temporary. It becomes indefinite. Instantly, your travel costs become non-deductible commuting expenses, and your tax-free stipends convert to fully taxable wages.
The trap is the contract extension.
You sign a 6-month contract in rural North Dakota. You deduct your flights, rental car, and housing stipend. Six months later, the hospital offers you an extension. You sign for another 6 months. Great for your income. Fatal for your taxes.
Here's the kicker: The IRS applies the one-year rule prospectively. The moment you sign that extension, making your expected stay longer than 12 months, the clock resets. It's not just that the new stipends become taxable, the retroactive tax liability kicks in. The IRS treats the entire assignment, from day one, as indefinite. All those tax-free stipends you already spent? Now they are taxable income.
Do not rely on the agency to track this for you. They don't care. Their compliance team isn't going to call you and say, "Hey Doc, you're at day 364, your stipends are about to become taxable." They will keep paying you the stipend because it lowers their payroll taxes.
Tracking cumulative days at a single facility is your legal responsibility. If you work at the same hospital, or in the same general metropolitan area, the days accumulate. Even if you take a two-week break between contracts, the IRS looks at the continuous nature of the employment.
If you hit month 11, pack your bags. Go work somewhere else for a while. Let the one-year clock reset.
Reimbursement vs. Allowance: The Fatal Paperwork Mistake
There are two ways companies handle travel money: accountable plans and non-accountable allowances.
An accountable plan is safe. Under an accountable plan, you submit actual receipts to the agency, they reimburse you for exactly what you spent (up to federal per diem rates), and the agency handles the tax accounting. You don't report the reimbursement as income, and you don't deduct it. It's clean.
A non-accountable allowance is the danger zone. This is when the agency just hands you a flat $150 a day for meals and $3,000 a month for housing, no questions asked. No receipts required. It feels great. You just pocket the cash.
Until the audit.
The IRS views non-accountable allowances as supplemental wages. They are 100% taxable. If you don't report them as income, you are committing tax fraud.
The mistake to avoid: Accepting flat-rate stipends without submitting itemized receipts or mileage logs. If you accept the money, you must track the expenses.
To protect yourself, you need the exact documentation a CPA requires to defend your deductions:
- Lodging: Detailed hotel folios or signed lease agreements. A credit card swipe isn't enough.
- Meals: Actual receipts or a compliant per diem diary.
- Transportation: Flight itineraries, rental car agreements, and a mileage log with business purpose, start/end odometer, and date.
- Time: A calendar showing exactly which days you were physically working at the assignment location.
Keep a tax binder for every assignment. If it isn't written down, it didn't happen. The IRS doesn't accept "I remember buying groceries in North Dakota" as proof.
If your agency pays you a flat stipend, you must report that as income on your Schedule C, and then deduct your actual travel expenses against it. Never accept an unverified allowance and assume you're flying under the radar.
Key Takeaways
- Never assume travel stipends are tax-free just because your agency labels them as such on your pay stub. The IRS categorizes income by how you handle it, not by what the agency calls it.
- Failing to maintain a legitimate, high-cost permanent tax home is the number one reason locum physicians lose audits. You must prove duplicated living expenses.
- Exceeding the 12-month temporary assignment threshold at a single facility instantly converts your allowances into taxable wages, retroactively.
- Always demand and use an accountable reimbursement plan rather than accepting unverified flat-rate allowances. Track every dollar.
Your Action Steps
- Audit your current contracts today. Look at your pay stubs. Are the stipends separated from your taxable hourly pay?
- Calculate your days. Check your calendar for the last 24 months. Are you approaching the 365-day limit at any single facility?
- Build your tax binder. Start collecting hotel folios, flight receipts, and mileage logs right now. Do not wait until January.
- Call your CPA. Ensure they understand locum tenens taxation. If they tell you stipends are automatically tax-free without reviewing your tax home status, find a new CPA immediately.
