As a locum tenens physician, you often have more flexibility than your W-2 counterparts. But that independence also comes with greater tax responsibility.
When you are paid as an independent contractor, you may have access to a broader range of deductions and tax-saving opportunities, provided you understand what qualifies and how to document each expense properly.
That’s why understanding locum physician tax deductions is essential. A thoughtful tax strategy can help reduce taxable income and keep more of your earnings. It can also help you stay compliant when you are working across multiple assignments and states.
In this guide, we’ll cover common 1099 physician expenses, explain the rules behind deductible business expenses for doctors, and highlight the mistakes that can create problems later.
How Locum Physician Tax Deductions Work
For many locum providers, the biggest tax difference starts with classification. If you’re paid on a 1099, the IRS generally treats you as self-employed rather than as an employee. That means you’re responsible for tracking income, paying quarterly estimated taxes, and keeping records of business expenses tied to your work.
It also means you may be able to deduct ordinary and necessary business expenses. In IRS terms, an ordinary expense is common and accepted in your field, while a necessary expense is helpful and appropriate for running your business.
This is where locum physician tax deductions become especially valuable. A W-2 physician usually has fewer opportunities to deduct unreimbursed job costs. A 1099 physician, by contrast, may be able to write off a wider range of out-of-pocket expenses connected to earning income.
That said, not every expense is fully deductible. Some costs must be split between business and personal use. Others are only partly deductible, and if an agency or client reimbursed you, that expense is generally not deductible.
Why 1099 Physicians Often Have More Deduction Opportunities
Independent contractors are taxed more like business owners than employees. For locum physicians, that often means more deductible categories, including licensing fees, professional education, travel tied to temporary assignments, contract review, and certain office or technology costs used for business. That expanded opportunity is one reason this topic matters so much for locum providers.
At the same time, more deduction opportunities come with more documentation responsibility. Keep receipts, mileage logs, assignment contracts, reimbursement records, and proof of payment. Without them, even a legitimate deduction can become difficult to defend.
Licensing, Credentialing, and Certification Expenses
Many locum physicians can deduct professional expenses that help them maintain and strengthen their ability to practice in their current specialty. This is one of the more straightforward categories of deductible business expenses for doctors, provided the costs are directly related to your current work and were not reimbursed.
Common examples include:
- State medical licenses
- DEA registration fees
- Fingerprinting and background checks
- Hospital credentialing fees
- Board exam renewals
- Required certifications such as ACLS or BLS
- Conference or course registration
- Airfare or other transportation for CME
- Hotel stays tied to qualifying education
- Course materials, journals, and specialty subscriptions
- Clinical reference tools used in your work
The key distinction is whether the expense supports your current profession. In general, costs that maintain or improve your existing skills may qualify, while expenses that prepare you for a new trade or business typically do not.
This is also an area where documentation warrants attention. Common mistakes include deducting initial education costs tied to becoming a physician, claiming certifications unrelated to your current work, including expenses that were reimbursed, or failing to keep receipts and proof of payment. If travel is part of a CME event, be sure to separate business and personal expenses clearly.
Travel, Housing, and Meal Expenses for Assignments
Travel is one of the most valuable locum physician tax deductions, and one of the most misunderstood.
The IRS generally allows business travel expenses when you’re traveling away from your tax home for work. Your tax home is usually your main place of business or work area, not necessarily your family home. Travel expenses must be ordinary and necessary, and personal costs are not deductible.
For temporary assignments, deductible travel expenses may include:
- Airfare, train fare, or bus fare
- Business mileage
- Rental cars
- Hotels or other lodging
- Taxis, rideshares, parking, and tolls
- Dry cleaning, laundry, and similar travel-related costs
- Business calls and internet for the trip
Unlike travel and housing costs, meals when traveling can’t be fully deducted. Instead, the standard amount is 50%.
A key concept here is the temporary assignment rule, often referred to as the one-year rule. In general, travel expenses are easier to support when an assignment is expected to last less than one year. Once an assignment is expected to last longer than one year, travel expenses are far less likely to be accepted as ordinary and necessary.
What is NOT Deductible
This is where many physicians get tripped up. Some costs feel work-related but still do not qualify.
Expenses that are commonly not deductible include:
- Commuting to a regular work location
- Fully reimbursed expenses
- Personal travel days added to a work trip
- Extra hotel nights for vacation purposes
- Meals or lodging that are primarily personal
- Mixed-use expenses that are not properly allocated
Commuting is especially important. In general, travel between home and a regular business location within your tax home area is considered personal commuting, not a business deduction.
Other Commonly Overlooked Deductions
Beyond travel and CME, many locum providers miss smaller deductions that add up over the year.
Home Office
If you use part of your home for charting, credentialing, scheduling, applications, invoicing, or other administrative work tied to your locum business, a home office deduction may be worth reviewing with your CPA.
To qualify, the room must:
- Be used exclusively for business activities
- Be used on a consistent basis
- Your home must be a principal place of business
If your home office meets these requirements, you can use the simplified method to deduct per square foot of office space, up to a maximum of 300 square feet (max deduction of $1,500).
The alternative is the actual expense method, where you deduct the actual percentage of your home used for business. This includes a portion of rent, mortgage interest, utilities, insurance, and repairs.
Professional Services
Fees paid to a CPA, tax strategist, attorney, or contract review service may also be business-related when they directly support your locum work. For many physicians, this is one of the most practical deductible business expenses for doctors because it helps protect both compliance and profitability.
Equipment and Supplies
Work-related items such as scrubs, laptops, medical tools, printers, office supplies, and software may qualify if they are used for your business and not reimbursed. If an item has both personal and business use, only the business portion should generally be counted.
Cell Phone and Internet
Many locum physicians use the same phone and internet connection for both personal and professional activities. In those cases, only the business-use percentage should be deducted. If you maintain a separate line or service used only for work, that cost may be easier to support in full. Without a separate line, consistent records are important to show how you calculated business versus personal use.
Vehicle Expenses
If you use your vehicle for business driving beyond normal commuting, you may be able to deduct those costs using either the standard mileage method or the actual-expense method, depending on your situation.
The actual-expense method requires you to total the costs of operating your vehicle and apply the business-use percentage. The standard mileage method is simpler because it relies on business miles driven rather than individual operating expenses. For the 2025 tax year, the standard mileage rate for business use is 70 cents per mile. That means 5,000 business miles would produce a $3,500 deduction.
Retirement Planning
Depending on how your locum work is structured, retirement contributions may offer additional tax advantages. Many retirement accounts allow for tax-deferred growth, and certain contributions can reduce your current taxable income. For example, IRAs allow eligible taxpayers to contribute up to $7,500 ($8,600 if you’re age 50 or older) in 2026.
Locum tenens physicians may also be able to make both employee and employer contributions to a solo 401(k), which can allow for much higher total contributions, up to $72,000 in 2026, depending on income and eligibility.
This can create more flexibility and greater tax-deferred savings than what’s typically available through a standard W-2 workplace plan. Because contribution limits and eligibility rules vary based on income, entity structure, and plan type, retirement planning is another area where personalized guidance is crucial.
For a deeper look, view our full guide to locum tenens retirement planning.
How to Maximize Deductions Without Triggering Audits
Taking legitimate deductions doesn’t create a problem by itself. Poor documentation does.
If you want to maximize locum physician tax deductions while staying compliant:
- Track every expense category monthly
- Save digital copies of receipts
- Keep assignment contracts and reimbursement details
- Maintain a mileage log for business driving
- Separate business and personal bank or credit card activity
- Review deductions before each quarterly estimated tax payment
The more organized your records are, the easier it is to support your return and make smarter decisions throughout the year. A useful rule of thumb is this: if you cannot clearly explain why an expense was business-related and show how much you paid, it deserves a second look before you claim it.
Final Thoughts
Locum work can create meaningful tax-saving opportunities, but only when those opportunities are handled carefully. Understanding locum physician tax deductions starts with the basics: know whether you’re being paid as a 1099 contractor, understand which 1099 physician expenses may qualify, and keep records that support every deduction you take.
Licensing, CME, travel, housing, meals, professional services, and partial-use expenses can all contribute to a stronger tax strategy. The goal is not simply to write off more expenses. It is to build a system that helps you keep more of what you earn while staying organized and compliant.
If you want help identifying missed deductions and building a smarter year-round tax plan, schedule a consultation with The Doctor’s CPA. We help locum physicians uncover savings opportunities, stay ahead of quarterly taxes, and create a tax strategy that supports long-term financial health.