Does a Texas S-Corp Mean I Don't File in the States Where I Work?
The forum version goes: the 1099 hits my Texas corporation, I am just its W-2 employee, so no state income tax. That story is how locums get assessed with interest three years later.
A guide by Taxstra Tax & Accounting · CPA-led tax strategy for business owners
Written by Bryan Martin, CPA, Managing Partner and Founder of Taxstra. Last updated August 18, 2026.
The short answer
No. Where your entity is formed and where your income is taxed are two different questions, and states only care about the second one: where the services were physically performed. Income from shifts worked in another state flows through your S-corp to you and is taxable there as nonresident income; wages your corp pays you for those shifts are sourced there too; and the corporation itself often owes foreign registration and filings in that state. A Texas (or Florida, or Wyoming) entity saves you state tax only on income actually earned in no-tax states.
Domicile is not sourcing
Every state income tax system in the country runs on the same first principle: compensation for personal services is taxable where the services are performed. You can route the payment through a Texas S-corp, a Delaware holding company, or a numbered account with a tasteful logo; the shift still happened at a hospital in a taxing state, and that state’s claim attaches to the income the moment you badge in.
The S-corp changes the path the income takes to your 1040, not its source. As a pass-through, the corporation’s profit lands on your K-1 and keeps its state character: profit earned in a work state is nonresident income to you there. The salary piece is worse for the story, not better: wages for work performed in a state are textbook taxable compensation in that state, and your corporation just became an out-of-state employer with payroll footprint there.
| The story | The reality |
|---|---|
| "The 1099 is issued to my Texas corp, not me" | The corp’s income is sourced where its physician performed the work, then passes through to you with that sourcing intact |
| "I am just a W-2 employee of the corp" | Wages are sourced where earned; the corp may owe registration, withholding, and unemployment filings in the work state |
| "Texas has no income tax, so nothing to file" | True only for income earned in Texas and other no-tax states; every taxing work state still expects a nonresident return |
| "Nobody will ever connect it" | The 1099, your credentialing file, and interstate data sharing connect it; assessments arrive with penalties and interest attached |
What the entity setup actually costs and actually buys
Run the "Texas corp from Missouri" structure honestly and you get this ledger. Costs: registered agent and franchise obligations in the formation state, foreign qualification in your home state (you are running the business from your kitchen there, which is doing business), foreign qualification in work states, and the same nonresident returns you were always going to file. Buys: nothing your home-state entity would not have bought.
None of this means the S-corp election itself is a mistake. At sustained locum profits, the salary-and-distribution split can produce real payroll tax savings, and that math is the legitimate reason the structure exists; we walk it, with the reasonable-compensation guardrails, in the locums S-corp guide. The mistake is expecting the election to do a job it has never done: erasing work-state sourcing.
How the assessment actually unfolds
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Frequently Asked Questions
If my S-corp is formed in Texas, do I still owe tax in the states where I work?
Yes. States tax income by where the services were physically performed, not by where the entity receiving the check was formed. An S-corp is a pass-through: the income earned in a work state flows through to you and is taxable to you as a nonresident of that state, exactly as it would have been on a direct 1099.
I am just a W-2 employee of my own S-corp. Does that change the sourcing?
No, it makes the point clearer. Wages are sourced to where the work is performed, so the salary your S-corp pays you for shifts worked in another state is taxable by that state, and your corporation technically has payroll obligations there. Turning yourself into the corporation’s employee does not move the hospital.
Does my S-corp itself have to register or file in the states where I take assignments?
Commonly yes. A corporation doing business in a state through its physician-employee generally needs to register as a foreign entity, may owe that state’s S-corp or franchise filings, and may have nonresident withholding or composite return obligations for its shareholder. The exact stack varies by state, which is precisely why the "one Texas entity, zero state filings" story does not survive contact with a real assignment calendar.
How do states even find out about my out-of-state S-corp income?
Data matching. Agencies and hospitals issue 1099s to your entity with a work-site record, states share information with the IRS and each other, and hospital credentialing files are public-adjacent evidence of where you practiced. Nonresident assessment letters routinely arrive two or three years after the fact, with penalties and interest doing the compounding.
Is there still a good reason to form the S-corp in my home state?
Form it where you live and work from, and let the tax election do its actual job: potential self-employment tax savings at sufficient profit, covered in our locums S-corp guide. Forming in a no-tax state you do not live in adds registered-agent fees and foreign registrations without removing a single work-state filing.
I have unfiled work-state years. How do I clean this up before they find me?
Most states run voluntary disclosure programs: come forward before contact, file a limited look-back period (commonly three or four years), and penalties are typically waived while tax and interest are paid. Voluntary disclosure is dramatically cheaper than assessment, and it closes the unlimited statute that unfiled years leave open. The order of operations matters, so run the cleanup through a professional rather than mailing surprise returns.
Do city and local taxes follow the same sourcing logic?
Where they exist, yes, and locums forget them: Ohio municipalities, Kentucky occupational licenses, Philadelphia’s wage and net profits taxes, and St. Louis and Kansas City earnings taxes all reach income earned inside their borders regardless of your entity’s home state. Assignment diligence should note the city layer, not just the state one.
Is the S-corp still worth it if most of my assignments are in high-tax states?
Often yes, because the election’s savings live on the payroll-tax side, which is federal and mostly indifferent to your state mix. What the state mix changes is the overhead line: more registrations, payroll accounts, and returns to run the same salary through. The break-even profit level creeps up with each additional filing state, which is exactly the modeling covered in the locums S-corp guide.
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This page is educational, not individualized tax advice. Locum tenens tax outcomes depend on your contracts, your states, and your numbers. Savings vary by client and results are not typical of every situation. Consult a qualified tax professional before acting on anything here.