The Apartment Office and the Sales Trip: Mapping Permanent Establishment Risk Before It Maps You
Permanent establishment risk has a way of arriving quietly. A U.S. mid-market company sends a business development manager to Germany for a series of client meetings. The manager works from a rented apartment between visits. A sales director spends two weeks a month in the United Kingdom, using a coworking desk and signing proposals on behalf of the U.S. parent. A technical employee moves temporarily to the Netherlands to support a launch and remains on the U.S. payroll. None of these facts looks like a corporate tax event in the ordinary course. Each can be relevant to whether the company has a taxable presence abroad.
The issue is not new, but the operating model has changed. Remote work, video calls, and frequent short trips have blurred the line between business travel and local activity. For U.S. companies entering or expanding in Europe, permanent establishment analysis needs to sit alongside entity formation, payroll, and transfer pricing. It is a governance control, not a year-end tax question.
What Actually Creates a Taxable Presence
A permanent establishment generally arises where a company has a fixed place of business through which it carries on business, or where a dependent agent habitually concludes contracts on its behalf. Treaties narrow those concepts, but they do not erase them. A home office can be a fixed place of business if it is used with a degree of permanence and the company has a right to use it. A coworking membership can serve the same function. A desk in a client's office, used regularly and exclusively for the company's business, may also be relevant.
The dependent agent test is often more practical. If an employee or local representative routinely negotiates and concludes contracts in the name of the U.S. company, the company may be treated as having a taxable presence even without an office. The title on the business card matters less than the authority in the contract and the pattern of behavior. A salesperson who quotes prices, closes orders, and binds the company is not merely visiting.
Service permanent establishments add another layer. Some treaties allow a service PE to arise where employees provide services in the other country for a specified period, often measured in days or months. Construction and installation projects have their own thresholds. The common mistake is to assume that a treaty's 183-day rule for employment income also governs corporate taxable presence. It does not.
The Treaties Are a Filter, Not a Shield
U.S. companies often assume that a tax treaty with the relevant EU member state eliminates double taxation and, by extension, removes the risk of a local taxable presence. That is too simple. Treaties allocate taxing rights, but they do not override the domestic PE rules in every case, and the thresholds differ. Some treaties have a service PE clause; some do not. Some dependent agent provisions are narrow; others are broader. The OECD multilateral instrument has changed the application of certain treaty provisions in some jurisdictions. Local law and local administrative practice still matter.
A company with a U.S. parent and a European subsidiary may also create confusion about which entity employs the mobile worker, which entity bears the cost, and which entity has authority to contract. Intercompany agreements and secondment arrangements need to match the facts. If the U.S. parent sends an employee to support a European subsidiary, the subsidiary may be the economic employer for payroll and PE purposes, even if the U.S. parent keeps the person on its payroll.
The Evidence That Supports a Defensible Position
A defensible PE position is built on contemporaneous documentation. Travel logs, calendars, expense reports, and border-entry records should show where employees actually worked and for how long. Contracts and proposal templates should show who has authority to bind the company. Board minutes and delegations of authority should confirm that local staff cannot conclude contracts without approval. Desk-sharing arrangements and office leases should show whether the company has a fixed place at its disposal. Secondment agreements and intercompany service agreements should align with the payroll and transfer pricing treatment.
That evidence is most useful before a tax authority asks for it. A company that reconstructs travel patterns from calendar invites two years later is in a weaker position than one that maintained a travel log and reviewed it quarterly. The documentation should also cover remote-work requests. A policy that permits an employee to work from another country for a fixed period, with tax and payroll review before approval, is a control. An informal arrangement approved by a local manager is a risk.
Why a Written Policy Is Now a Core Control
A written travel-and-remote-work policy is not an HR nicety. It is the operating mechanism that keeps PE risk visible. The policy should set approval requirements for international remote work and business travel, define maximum periods before tax review is triggered, identify who signs off, and require local tax advice where thresholds are approached. It should distinguish between short client visits, temporary remote work, and longer assignments. It should also address authority to contract, so that sales staff know what they can and cannot sign.
The policy should be paired with a travel log and a quarterly review. The review need not be expensive, but it must be real. It should flag patterns: the employee who is always in one country, the salesperson who closes deals locally, the team that has effectively relocated. Those patterns are the raw material of a PE analysis.
The Cost of Discovering PE After the Fact
A PE assessment that arrives after the fact can bring corporate tax returns, penalties, interest, payroll corrections, and transfer pricing adjustments. It can also surface in acquisition due diligence, where a buyer's advisers will ask whether the target's mobile workforce created undisclosed exposures. For a U.S. mid-market company, that can turn a routine cross-border expansion into a pricing negotiation or a indemnity discussion.
The practical answer is not to ban travel or remote work. It is to make the risk visible before it becomes a filing position. For U.S. companies sending employees to Europe, the permanent establishment question belongs in the market-entry budget and the governance calendar. The apartment office and the sales trip are ordinary business facts. The control that surrounds them is what keeps them from becoming an unexpected taxable presence.
