Locum Tenens Taxes: A Practical Guide for Clinicians

Updated October 28, 2026. For all clinicians taking locum or contract assignments, including physicians, NPs, PAs, CRNAs, and other APPs.

A higher locum rate does not tell you how much an assignment will leave in your bank account. Taxes, unreimbursed costs, insurance, travel arrangements, and retirement benefits all affect the comparison. Good planning begins with the contract and continues through the last payment.

This guide focuses on the questions and records that help you evaluate an assignment. You can use it for occasional coverage alongside a salaried job or for a full-time independent practice. Travel deductions and entity elections deserve individual review; neither follows automatically from the phrase “locum tenens.”

1. Confirm the arrangement before the first shift

Locum work can involve W-2 employment or independent contracting. The actual working relationship determines classification; the contract's label or the form a payer sends is not the only factor. The IRS worker-classification guidance explains the role of control and the relationship between the parties.

Ask the agency or facility to spell out:

• Whether the arrangement is employment or independent contracting, and how compensation will be reported.
• Who pays for malpractice coverage, including any tail requirement.
• Who books and pays for travel, housing, licensing, and credentialing.
• Which expenses require approval or receipts for reimbursement.
• When invoices are due, when payments arrive, and how cancellations are handled.

Keep the signed agreement and reimbursement policy with the assignment records. A clear answer before work begins can prevent a surprise expense or a missing document months later.

2. Establish your tax home before assuming travel is deductible

Your tax home is generally the area of your main place of business, which may differ from the home where your family lives. Qualifying business travel generally requires being away from that tax home long enough to need sleep or rest. A distant hospital, an overnight stay, or maintaining a mailing address elsewhere does not settle the issue alone. See IRS Topic 511 on business travel.

For a clinician with no regular business base, the analysis can be especially important. An itinerant worker may have a tax home wherever they work and therefore may not qualify for away-from-home travel deductions. Discuss the actual pattern of work and living arrangements with your preparer before relying on a travel deduction to make an assignment affordable.

Temporary assignments: the expected duration matters

The IRS generally treats an assignment at one location as temporary when it is realistically expected to last, and actually lasts, one year or less. An assignment expected to exceed one year is generally indefinite, even if it ends sooner. An extension can change the treatment when expectations change, and repeated short contracts at the same location can be considered together.

Retain the original dates, extensions, and communications about duration. A new contract every few months is not an automatic reset of the rule. Review the examples in IRS Publication 463 with your preparer if your assignment changes.

3. Separate business costs, personal spending, and reimbursements

Build a record of what you actually paid: eligible travel, clinical supplies, licensing costs, and other expenses connected to the independent assignment. Note whether an agency paid directly, reimbursed you, or included an allowance in your compensation. Keep the original invoice and reimbursement statement together so your preparer can apply the correct income and expense treatment.

For example, a PA might receive contract compensation and a separate reimbursement for a licensing renewal, while a physician's agency books the hotel directly. Those records should not be reduced to the same unlabeled “travel deduction.” An agency-paid hotel does not become an additional out-of-pocket expense merely because you stayed there.

Maintain a dated mileage log and distinguish business transportation from commuting. The clinician mileage guide covers trip classification and date-specific rates. For licenses, education, equipment, and other categories, use the independent clinician deduction guide as a review list.

Meals and per diem amounts need a separate review

A meal during an ordinary local shift is not automatically a business travel meal. Eligible business meals are generally subject to a 50% limitation, with conditions and exceptions. For qualifying travel, a standard meal allowance may be available, but self-employed travelers generally need actual lodging expenses rather than a standard lodging deduction.

Do not copy an agency's advertised daily allowance into your tax return as an automatic deduction or assume it is tax-free. Preserve the travel dates, locations, business purpose, actual lodging records, and compensation details. Ask how the reimbursement arrangement affects reporting.

4. Plan tax payments around the whole year

A busy block of locum shifts can change your annual profit substantially. Update your tax projection when you sign a meaningful new assignment, rather than waiting until the last deposit. Include existing withholding if you also have a W-2 job, other household income, business expenses, and payments already made.

Federal estimated tax payment requirements and penalty protection depend on amounts and timing. An uneven work calendar may warrant the annualized income installment method. Our 2026 quarterly tax guide explains the dates and benchmarks. A fixed reserve percentage or an app estimate is a planning input, not confirmation that you have paid enough.

For assignments in multiple states, give your preparer the work locations, dates, residence information, and relevant withholding or payments. State filing obligations, sourcing, and credits depend on the states involved. Do not assume your federal payment or your home-state return resolves every location.

5. Evaluate an S corporation with a cost comparison

An S corporation can be relevant for some independent clinicians, but there is no universal income level at which it guarantees savings. A shareholder who works in the business must receive reasonable compensation for services before non-wage distributions. The IRS S corporation compensation guidance describes this requirement.

Ask for a written comparison that includes expected profit, reasonable wages, payroll administration, tax preparation, state costs, retirement contributions, and any other wages you earn. Compare the ongoing costs with the projected benefit before choosing an election. A single-member LLC and an S corporation tax election are also different decisions; forming an LLC alone does not create that tax treatment.

6. Coordinate retirement savings with your other work

Before directing a large contract payment into a retirement plan, confirm the plan, eligible compensation, available contribution room, and deadlines. A clinician with a hospital 401(k) and a solo 401(k) must coordinate personal employee deferrals across plans. Employer contributions involve a different calculation, particularly for self-employed earnings.

Use current-year rules rather than an old headline maximum. The IRS one-participant 401(k) guide explains why the owner has both employee and employer roles. Bring other plan contributions and projected business profit to your CPA or plan provider so the recommendation reflects your actual situation.

An assignment workflow you can repeat

• Before starting: save the agreement, expected duration, insurance terms, reimbursement rules, and any upfront receipts. Review tax-home questions before booking travel.
• During the assignment: record payments by payer, capture expenses and receipts, keep mileage details, and note changes in schedule or duration.
• After each payment cycle: compare recorded income with the agency statement, follow up on missing amounts, and distinguish reimbursements from fees.
• When the assignment ends: reconcile the final payment, retain supporting documents, and update the tax projection before spending the remaining reserve.

1099Dr can help with the income, expense, receipt, mileage, and export portions of this routine. It does not determine your tax home, run S corporation payroll, calculate all multistate filing obligations, or file tax returns. For the broader annual document list, use our clinician tax-season checklist.

Common questions

Can I deduct housing for every locum assignment?

No. Tax home, assignment duration, business purpose, who paid, and supporting records all matter. Have your preparer review the facts before budgeting around a lodging deduction.

Does a high hourly rate always beat a salaried offer?

No. Compare the expected work volume and full package: unreimbursed expenses, benefits, insurance, travel, time off, and taxes. A gross rate alone leaves out much of the decision.

What should I organize first?

Choose one assignment. Gather its contract, latest statement, first payment, and three recent expenses. Create your free beta account and start recording that work while the details are fresh.

General U.S. tax education. Assignment facts, employment status, entity structure, and state rules affect the outcome. Consult a qualified tax professional familiar with your work.