Your Delaware Entity Isn’t Enough | Where You Must Register to Hire Across US States

Your US subsidiary is incorporated in Delaware. Your first hire was in New York, your second in Texas, and last month your Head of Sales relocated to Florida and asked whether that was a problem.

You told her it was fine. The company is registered in the US, after all.

It is not fine, and the reason it is not fine has nothing to do with Delaware. It has to do with a feature of the US system that has no equivalent in the single-market thinking most European companies bring with them: the United States is not one jurisdiction for employment purposes. It is fifty-one.

At Foothold America, this is the compliance gap we’re asked to unpick most often, usually eighteen months after the first out-of-state hire, and usually when someone in finance notices a penalty notice they cannot explain.

Does hiring one employee in a state mean you have to register there?

Almost always yes, but for two different reasons that companies routinely confuse, and only one of them is a judgment call.

Obligation one: payroll tax registration. This is not optional and not arguable. The moment an employee performs work in a state, you must register with that state’s tax and labor authorities: a withholding account, an unemployment insurance account, and in a growing number of states a paid family leave account. State income tax is withheld based on where the employee performs the work, not where your office sits.

Obligation two: foreign qualification. This is registration with the state’s Secretary of State for the right to transact business there, and it is a facts-and-circumstances test rather than a bright line.

The trap is that companies research the second obligation, discover it is truly debatable, conclude that nothing is required, and miss the first one entirely, which was never debatable at all.

Get Started → Unsure which states you are exposed in? Talk to our team for a review of where you currently employ and what each state requires.

What is foreign qualification and what triggers it?

Foreign qualification is the process of registering an entity formed in one state to do business in another. “Foreign” here means out-of-state, not out-of-country. A Delaware corporation is a foreign corporation in California, exactly as a German company would be.

Most state statutes define what doesn’t count rather than what does, so the analysis works by elimination. Wolters Kluwer identifies five signs that you are transacting business in a state:

1. A physical location, such as an office, warehouse or store
2. Employees working in the state
3. Regularly entering binding contracts there
4. Regularly meeting clients or customers in the state to conduct business
5. A steady, significant revenue stream from in-state activity

Activities that generally do not trigger qualification include owning property alone, engaging independent contractors, conducting business purely by phone and email, and isolated one-off transactions.

For a remote employee specifically, the test is whether your operations are “localized” in the state or merely incidental to interstate activity. The questions that matter: how central is that person to the business, what share of revenue flows from their work, and do they meet clients in-state?

In practice, one salesperson working from home and meeting customers in that state is a strong indicator. One back-office engineer who never leaves their desk is weaker. Neither is a safe assumption without checking the specific state.

What must you register for the moment you hire in a new state?

Regardless of how the qualification question resolves, hiring in a new state creates a fixed list of registrations. These are not discretionary:

• State income tax withholding account, in the state where the work is performed. A handful of states have no income tax, and some have reciprocity agreements with neighbors, but you must confirm rather than assume.
• State unemployment insurance (SUTA) account. See the sourcing rule below.
• Workers’ compensation coverage, required in almost every state, and your existing policy will not automatically extend to a new one.
• State paid family and medical leave, where a program exists, including Colorado, Minnesota, Delaware, Maine, Washington, and Maryland from 1 January 2027.
• State disability insurance, in California, Hawaii, New Jersey, New York, and Rhode Island.
• Local tax accounts, since some cities and counties levy their own income or payroll taxes.

The unemployment insurance sourcing rule

Unemployment contributions go to one state per employee, not several. The Department of Labor’s localization test is applied in order, stopping at the first “yes”:

1. Is the employee’s service localized in one state?
2. If not, do they perform some service in the state where their base of operations sits?
3. If not, do they perform some service in the state directing and controlling their work?
4. If not, do they perform some service in the state where they live?

Income tax withholding follows entirely different rules. It is common and correct for an employee’s unemployment insurance to be paid to one state while income tax is withheld for another.

What happens if you don’t register?

Three categories of consequence, and the second is the one that tends to change minds.

Monetary penalties. These are set state by state, and Wolters Kluwer’s summary of statutory fines shows the range:

Several states also reach individuals personally. Virginia provides for $500–$5,000 for each officer, director, or employee who does business in the state knowing that qualification was required; Maryland treats it as a misdemeanor with fines to $1,000.

The closed-door rule. An unqualified foreign corporation generally cannot maintain an action in that state’s courts until it registers. It can still be sued. That asymmetry is the real exposure: you can be dragged into court by a customer, but you cannot sue a client who refuses to pay, a vendor who breaches, or a competitor who infringes your IP, not until you register and settle the back fees.

Most companies discover this at precisely the wrong moment: when they finally need to enforce something.

Back taxes, retroactively. Registering late does not reset the clock. You remain liable for back fees, penalties, and interest for every year you operated unregistered. And, critically, not registering does not avoid the tax. California’s Franchise Tax Board is explicit: a foreign corporation that does not qualify with the Secretary of State but does business in California is still subject to the franchise tax. Every corporation incorporated, registered, or doing business in California owes the $800 annual minimum franchise tax, whether or not it ever filed a registration.

Staying unregistered buys you the liability without the legal standing.

What does foreign qualification actually involve?

The process is broadly consistent across states, even as the fees and forms differ:

1. Name availability check. Your legal name may already be taken in the target state, in which case you qualify under a fictitious name, which is a common surprise for international companies whose brand is unique at home.
2. Appoint a registered agent with a physical address in that state to accept service of process. A P.O. box will not do, and neither will most virtual office arrangements.
3. Obtain a certificate of good standing from your formation state, which most states require as evidence before approving your application.
4. File the Certificate of Authority application with the Secretary of State.
5. Maintain it. Annual reports and fees are then owed in your formation state and every state where you have qualified.

That last point is the one that compounds. Qualifying in six states means six registered agents, six annual report deadlines, and six sets of fees, in perpetuity, until you formally withdraw.

Why does this catch international companies in particular?

Because two reasonable assumptions, both correct at home, are both wrong here.

The first is that incorporation is national. A company registered in Ireland can employ across Ireland. A Delaware corporation is registered in Delaware. The entity is recognized nationally, but the authority to transact business is granted state by state. Delaware’s popularity for incorporation is about corporate law and court quality, not about operating reach. It confers no privileges in the other 49 states.

The second is that remote work is location-neutral. In much of Europe, an employee working from home in another region rarely creates a new registration obligation for the employer. In the US, an employee’s home office is a business presence in that state for tax purposes, and often for qualification purposes too. This is why a single relocation, such as the Head of Sales moving to Florida, can quietly create a compliance obligation nobody filed.

The result is a familiar pattern. The entity is set up correctly. The first hire, in the entity’s own state, is handled correctly. Then hiring goes national, remote work spreads the footprint, and nobody re-runs the analysis. Exposure accumulates silently until a penalty notice, an audit, or an unenforceable invoice surfaces it.

How do you avoid the problem entirely?

There are three routes, and the right one depends on how committed you are to each state.

Qualify in every state where you employ. Correct, thorough, and administratively heavy. Sensible where you have real presence, meaning an office, a team and meaningful revenue, and where you intend to stay.

Employ through an Employer of Record. The EOR is the legal employer of record in that state and already holds the registrations, payroll accounts, workers’ compensation coverage, and paid leave enrollments. Your company gains no registration obligation in that state, because your company is not the employer there. For testing a market, for a single remote hire, or for a state you may exit within two years, this is usually the proportionate answer.

Use a mix. Most of our clients qualify in the two or three states where they have real presence, and employ through an EOR everywhere else. The test is simple: if you would not open an office in that state, you probably should not be taking on a permanent registration footprint there either.

What is not a route is doing nothing and hoping the employee’s state never notices. The registrations that matter most, payroll withholding and unemployment insurance, are the ones a state discovers automatically, because your employee will file a personal tax return there.

How Foothold America helps international companies get this right

We work exclusively with companies headquartered outside the United States, which means multi-state exposure is a conversation we have every week rather than an edge case.

We will map where you currently employ, identify which states you are registered in and which you are not, and tell you plainly what each gap costs to close. Where qualification is the right answer, our Entity Setup and Management service handles the filings, the registered agent, and the ongoing annual reports so nothing lapses.

Where it isn’t, our Employer of Record service lets you hire in any US state without registering there at all. We hold the registrations, run the payroll, and carry the compliance obligation. Companies with their own entity that want to keep direct employment can use PEO+ to centralize multi-state payroll tax and workers’ compensation administration.

Get Started → Talk to our team about a multi-state exposure review.

Further reading

• US Company Registration Guide