Tax Strategy for Physicians Who Work Everywhere
Multi-state filing, S-Corp election, travel deductions, and retirement planning for locum tenens doctors.
(217) 788-0750
•1,500+ Clients Nationwide•Real Estate | Physicians | High-IncomeThe Unique Tax Challenges of Locum Tenens Physicians
Locum tenens physicians face a tax situation that most CPAs are not equipped to handle. You earn 1099 income across multiple states, each with different nexus rules, withholding requirements, and reciprocity agreements. Your tax home — the IRS concept under IRC Section 162 that determines whether your travel expenses are deductible — shifts based on where you live, where you work most frequently, and whether your assignments are temporary or indefinite. A general CPA who treats your situation like a standard 1099 contractor misses tens of thousands of dollars in savings every year.
The W-2 versus 1099 distinction creates the first layer of complexity. Some locum agencies issue W-2s and withhold taxes. Others pay you as a 1099 independent contractor with no withholding. Many physicians receive both in the same tax year. Each classification carries different deduction rules. W-2 locum income limits your ability to deduct travel expenses (the Tax Cuts and Jobs Act suspended unreimbursed employee business expense deductions, and the One Big Beautiful Bill Act made that suspension permanent). But 1099 income opens the door to Schedule C deductions for travel, housing, licensing, CME, and equipment — plus the ability to elect S-Corp status and cut your self-employment tax. The entity structure you choose determines which deductions you can take and how much SE tax you pay.
Then there is the multi-state problem. A hospitalist working locum assignments in five states may need to file five non-resident returns plus a resident return — six total state filings. Each state calculates your taxable income differently. Some use days-worked apportionment. Others use income-source rules. A handful have reciprocity agreements that eliminate the non-resident filing requirement for residents of specific neighboring states. Without a CPA who understands these rules, you end up filing in states where you have no legal obligation, paying tax you do not owe, or missing credits for taxes paid to other jurisdictions. We have seen locum physicians overpay state taxes by $8K-$15K per year simply because their CPA filed conservatively instead of correctly.
Tax Strategies We Implement for Locum Physicians
Multi-State Nexus Optimization
We map every state where you worked during the tax year, analyze each state's nexus thresholds and filing requirements, and determine where you are legally required to file. Many states exempt non-residents who earn below a minimum income threshold or work fewer than a specified number of days. We apply reciprocity agreements where they fit — for example, if you are a Virginia resident earning W-2 locum wages in Maryland, DC, Pennsylvania, West Virginia, or Kentucky, reciprocity agreements can eliminate your non-resident filing obligation (note that reciprocity covers wage and salary income, not 1099 self-employment income). On your resident return, we claim full credit for taxes paid to states where filing was required, ensuring you never pay double tax on the same income. The result: fewer state returns, lower compliance costs, and a reduced total state tax burden.
S-Corp Election for Self-Employment Tax Savings
If you earn $100K or more in 1099 locum income, an S-Corp election is one of the highest-impact strategies available. Under IRC Section 1362, your S-Corp pays you a reasonable salary (subject to FICA and Medicare taxes), and the remaining profit passes through to your personal return free of self-employment tax. For a locum physician earning $380K with a $165K reasonable salary, the $215K in pass-through income escapes the 2.9% Medicare tax, the 0.9% Additional Medicare Tax, and the remaining Social Security tax — roughly $9K per year at 2026 rates, before counting the larger retirement contributions the S-Corp enables. We benchmark your reasonable compensation against MGMA salary data for your specialty, handle Form 2553 filing, set up payroll processing, and manage quarterly payroll tax deposits. Use our S-Corp savings calculator to estimate your potential savings.
Travel Deductions — Housing, Transportation, and Meals
Locum physicians with a maintained tax home under IRC Section 162(a) can deduct travel expenses for temporary assignments away from home. This includes temporary housing at assignment locations (apartments, extended-stay hotels, Airbnbs), airfare and ground transportation, rental cars and mileage (72.5 cents per mile for 2026, IRS-adjusted annually), meals during assignments (50% deductible under IRC Section 274), state medical licensing fees, CME courses and conference travel, malpractice insurance premiums, and medical equipment purchases. For physicians working 3-5 locum assignments per year, these deductions typically total $30K-$60K annually. The critical requirement is maintaining a legitimate tax home — we advise on residency maintenance, including keeping a permanent address, paying rent or mortgage at your home base, and returning home between assignments to preserve your tax home status.
Retirement Planning — Solo 401(k) and Backdoor Roth
Locum physicians with 1099 income can contribute to a Solo 401(k) — up to $24,500 as an employee deferral (2026 limit) plus 25% of net self-employment income as an employer contribution, for a combined maximum of $72,000 ($80,000 if age 50+). If you operate through an S-Corp, the employer contribution is calculated as 25% of your W-2 salary. At a $165K salary, that is $41,250 in employer contributions plus $24,500 in employee deferrals — $65,750 in tax-deferred retirement savings per year. We also implement the backdoor Roth IRA strategy for physicians above the income threshold: a non-deductible Traditional IRA contribution followed by an immediate Roth conversion, sheltering $7,500 per year ($8,600 if age 50+) in tax-free growth. Combined, these strategies create $70K+ per year in tax-advantaged retirement savings.
Estimated Tax Payments — Avoiding Penalties Across Jurisdictions
1099 locum income comes with no tax withholding, which means you must make quarterly estimated payments to the IRS and each state where you have a filing obligation. Underpayment triggers penalties under IRC Section 6654 — 6% annualized as of mid-2026, with the rate adjusted quarterly. We build a quarterly payment schedule based on your projected annual income, state allocation, and deduction timing. Because locum assignments are inherently unpredictable — a high-paying Q1 assignment may not repeat in Q3 — we use the annualized installment method (Form 2210 Schedule AI) when it produces lower required payments. This method calculates your tax obligation based on income actually earned in each quarter rather than assuming even income distribution, which can reduce your required Q1 and Q2 payments significantly when income is back-loaded.
PSLF Filing Status Optimization
For locum physicians on income-driven repayment plans pursuing Public Service Loan Forgiveness, your tax filing status has a direct and measurable impact on your monthly student loan payment. Filing Married Filing Separately (MFS) under IBR or the new Repayment Assistance Plan (RAP) uses only your individual income — not your household income — to calculate your payment. For a physician earning $380K married to a spouse earning $80K, switching from MFJ to MFS can reduce your monthly IDR payment by $800-$1,200. However, MFS also eliminates access to the student loan interest deduction, child and dependent care credits, and education credits — and it increases your marginal tax rate. We model both scenarios across your remaining repayment period, calculating the total combined cost of taxes plus loan payments. In most cases where the physician spouse earns significantly more, MFS produces a lower total lifetime cost. But the analysis must be done with actual numbers, not assumptions.
Resources for Locum Tenens Physicians
Dive deeper into locum-specific tax strategy with our complete locum tenens tax guide, covering 1099 classification, travel deduction rules, and multi-state compliance. Learn whether an S-Corp election is right for your income level and practice structure. And use our S-Corp savings calculator to see your projected self-employment tax savings based on your specific income and reasonable compensation.
Our Process
Discovery Call
Free 30-minute session to review your income sources, assignment states, current entity structure, and tax home status.
Multi-State Tax Analysis
We map every state where you worked, apply nexus rules and reciprocity agreements, and identify states where filing is not legally required.
Strategy Implementation
S-Corp formation, payroll setup, Solo 401(k) establishment, travel deduction documentation systems, and quarterly estimated payment schedule across all jurisdictions.
Year-Round Support
Quarterly check-ins, estimated payment adjustments as assignments change, mid-year state nexus reviews, and proactive planning for new locum contracts.
Case Study: Multi-State Locum Hospitalist (Illustrative Composite)
Client: Composite example (not an actual client) — traveling hospitalist earning roughly $380K of 1099 income across five states
Problem: Filing as a sole proprietor, paying full SE tax, missing travel deductions, and filing unnecessarily in states with no legal obligation
Strategy: S-Corp election with a documented reasonable salary, substantiated travel and housing deductions, nexus review eliminating unnecessary state filings, and a Solo 401(k) funded to the annual limit
Result: Reduced SE tax, captured tens of thousands in travel deductions, eliminated unnecessary state filings, and maximized retirement contributions
$35K-$60K (illustrative range)
Want results like this? Book a callFrequently Asked Questions
Related Resources
Locum Tenens Tax Guide
Everything locum tenens physicians need to know about 1099 taxes, travel deductions, multi-state filing, and entity selection.
Physician Tax Planning Playbook
Step-by-step guide covering entity selection, deduction strategies, and retirement planning for physicians at every career stage.
S-Corp Election for Physicians
When to elect S-Corp, how to set reasonable compensation, and projected savings for 1099 physicians by income level.