Permanent establishment: when foreign taxation is triggered
Many Swiss companies operate across the border convinced they are taxed only in Switzerland. Then they discover that a structured activity abroad has created a permanent establishment, with the obligation to declare and tax part of the profit there. It is one of the most treacherous topics in international taxation, because a permanent establishment can arise without anyone having formally set it up.
What a permanent establishment is
A permanent establishment is a fixed place of business through which a company carries on all or part of its activity in another State. It is not a separate company: it is an extension of the same company which, by virtue of its footprint on foreign territory, justifies that State’s right to tax the profit produced there.
The concept is defined in the double taxation treaties that Switzerland has concluded with numerous countries. It is these treaties that establish when the foreign State may tax and how the same profit is prevented from being taxed twice.
When it is triggered: the typical examples
A permanent establishment is typically created where there is:
- A place of management, a branch, an office, a workshop or a laboratory abroad.
- A construction site or a building or assembly project that exceeds a certain duration set by the treaty.
- A place where natural resources are extracted.
In all these cases the common thread is permanence: a physical presence that is not temporary, at the company’s disposal, through which the activity is carried on.
The “personal” permanent establishment: the agent
The most insidious case requires no office at all. If a person abroad acts on behalf of the company and has the authority to habitually conclude contracts in its name, that person may constitute a permanent establishment, even without a physical location. This is the issue of the dependent agent.
Exceptions are independent agents operating within the ordinary course of their own business — a genuine intermediary working for several clients — and purely preparatory or auxiliary activities, such as a warehouse used only for storage or an office dedicated to gathering information. But the line between “auxiliary” and “real activity” is thin and is fertile ground for disputes.
Why it is a concrete risk
The danger is not so much paying taxes abroad, but failing to notice it in time. An undeclared permanent establishment exposes you to:
- Assessments by the foreign State on the profit produced locally, with taxes, interest and penalties.
- Temporary double taxation, until the relief mechanism provided by the treaty is triggered.
- Filing and administrative obligations in the foreign country, often ignored until an audit.
Switzerland, for its part, generally exempts the profit attributable to a foreign permanent establishment, so that the same income is not taxed twice. But coordination between the two systems works only if the situation is set up and documented correctly.
Profit attribution
Once the permanent establishment exists, the next question is how much profit is attributed to it. The principle is to treat the permanent establishment as if it were an independent company operating at arm’s length, allocating revenues, costs and functions between the Swiss head office and the foreign location. It is a delicate exercise, which also touches on transfer pricing and requires solid documentation.
How to manage the risk in advance
A permanent establishment is prevented through analysis, not reaction. Before structuring an activity abroad, it is worth asking:
- Will I have a stable physical presence — office, operating warehouse, staff — in the foreign country?
- Will someone conclude contracts on behalf of the company outside Switzerland?
- Does the project have a duration that exceeds the treaty thresholds?
- Are the foreign activities truly only auxiliary, or do they generate value in their own right?
The answers determine whether it is preferable to operate through a permanent establishment, set up a separate local company or reorganise the flows to stay within auxiliary activities.
The value of a correct structure
International taxation punishes improvisation. Setting up your foreign presence properly from the outset avoids retroactive assessments, double taxation and penalties that arrive years later, when the situation is already hard to correct.
At SIH ONE we analyse your cross-border activities, assess whether and where a permanent establishment arises, apply the double taxation treaties and define the structure that keeps your overall tax burden under control.
Do you operate abroad and want to know whether you risk taxation you have not anticipated? Let’s review your structure.