Permanent Establishment: Triggers, Branch Profits Tax, and Filing

Permanent establishment is the legal threshold that lets a country tax a foreign company’s business profits, and the corporate tax implications kick in the moment that threshold is crossed. Under the OECD Model Tax Convention, which underpins most bilateral tax treaties, a company based in one country only owes income tax in another once it maintains enough presence there to qualify as a permanent establishment (PE). After that line is crossed, the host country taxes the profits attributable to the local operation, may add branch-level taxes, and expects ongoing transfer pricing compliance. The home country usually provides a credit or exemption so the same profit isn’t taxed twice.

What Creates a Permanent Establishment

Three main pathways lead to PE: a fixed place of business, a dependent agent acting for the company, or, under some treaties, services performed in the country for long enough. Each has its own threshold, and each has been reshaped in the last decade by the OECD’s BEPS project and more recent commentary on remote work.

Fixed Place of Business

The OECD Model treats a fixed place of business as a specific physical location through which a company carries on all or part of its business, with some degree of permanence, generally six months or longer, though individual treaties can set different thresholds.1OECD. The 2025 Update to the OECD Model Tax Convention Offices, factories, mines, and oil wells are textbook examples. A rented desk in a coworking space can qualify too, if the company controls the space and conducts core business from it.

Courts focus on the “right of use” over the premises. A salesperson passing through for meetings doesn’t create PE. A team that returns to the same rented office week after week likely does. The question is whether the company treats the location as its own base or as someone else’s space it happens to visit.

Construction and the Twelve-Month Rule

Construction and installation projects follow a separate clock. Under the OECD Model, a building site only becomes a PE if it lasts more than twelve months.1OECD. The 2025 Update to the OECD Model Tax Convention A contractor working on a ten-month bridge project generally won’t trigger local tax. But if delays push the project past twelve months, a PE arises retroactively from day one, not from the twelve-month mark. Even a few weeks of overrun can change the entire tax picture, which is why cross-border construction timelines deserve careful monitoring from the start.

Dependent Agent PE

A company can also create a PE through people rather than property. When someone in a host country habitually concludes contracts on the company’s behalf, the company is treated as having a local taxable presence, even without a rented square foot.

The 2015 BEPS Action 7 reforms widened this rule in a way that matters for any company with a foreign sales force. Before the changes, companies routinely avoided agent-based PE by making sure the local representative never technically “concluded” contracts: the salesperson negotiated every detail, but the final signature happened at headquarters. The revised standard now also covers situations where an agent “habitually plays the principal role leading to the conclusion of contracts that are routinely concluded without material modification by the enterprise.”2OECD. Preventing the Artificial Avoidance of Permanent Establishment Status – Action 7, 2015 Final Report If your local team does the real selling and headquarters rubber-stamps the paperwork, you likely have a PE.

Independent agents, such as brokers and commission agents who work for multiple clients and control how they do their jobs, don’t trigger PE for the companies they represent. The distinction hinges on genuine commercial independence. An individual who works exclusively for one foreign company, follows detailed instructions, and has no independent client base is a dependent agent regardless of what the contract calls them.

Service PE and Remote Workers

The OECD Model doesn’t include a standalone service PE rule, but the UN Model does, and many treaties between developed and developing nations follow the UN approach. Under the UN Model, a foreign company creates a PE when its employees or other personnel provide services in a host country for more than 183 days within any twelve-month period.3United Nations. United Nations Model Double Taxation Convention Service-heavy businesses should track employee travel days by treaty jurisdiction, because crossing that threshold can create a filing obligation retroactively.

Remote work has complicated the analysis. In November 2025, the OECD updated its Model Tax Convention commentary with specific guidance on when a home office creates PE for a foreign employer.1OECD. The 2025 Update to the OECD Model Tax Convention The framework works in two stages. If an employee works from home or another non-company location for less than half their total working time over any twelve-month period, that location is generally not treated as a PE. At or above 50%, PE isn’t automatic. The next question is whether there’s a “commercial reason” for the employee’s presence in that country, such as meeting local customers, managing supplier relationships, or providing real-time service across time zones.

Allowing remote work simply to retain an employee or reduce overhead is not a commercial reason. Temporary or sporadic work from home doesn’t trigger PE either. So an engineer who relocates abroad for personal reasons and works from home full-time may or may not create PE for the employer, depending on whether the company has actual business reasons for having someone in that country.

Activities That Stay Below the Line

Not every physical presence crosses the PE threshold. The OECD Model carves out activities that are preparatory or auxiliary, meaning they support the core business without directly generating profits. A warehouse used solely for storing goods before shipment doesn’t create PE. Neither does a purchasing office that buys raw materials, or a team that collects market intelligence.

The test is functional. If a facility’s activities are one step removed from producing revenue, the exemption applies. A showroom where potential customers view product samples is preparatory. The same showroom where staff start processing orders and closing sales is core business, and the exemption is gone.

After BEPS Action 7, companies can no longer slice a single business operation into multiple pieces, each assigned to a different group entity, to keep every individual piece within the preparatory or auxiliary exemption. The anti-fragmentation rule requires tax authorities to examine related-party activities in combination.2OECD. Preventing the Artificial Avoidance of Permanent Establishment Status – Action 7, 2015 Final Report If one subsidiary stores inventory, another handles logistics, and a third manages customer relationships in the same host country, the combined operation may constitute PE even though each slice looks exempt standing alone. This was one of the more consequential BEPS changes for e-commerce and distribution businesses that had structured their supply chains specifically to stay below the PE line.

How the Host Country Taxes the Profits

Once a permanent establishment exists, the host country taxes the profits attributable to that local operation. In the United States, a foreign corporation engaged in a trade or business is taxed on its effectively connected income at the same rates that apply to domestic corporations.4Office of the Law Revision Counsel. 26 USC 882 – Tax on Income of Foreign Corporations Connected with United States Business The PE is treated as a separate economic unit, and profits are attributed to it based on what it would earn if it were an independent company dealing at arm’s length with its parent.

The arm’s length principle drives that profit attribution. The IRS has broad authority to reallocate income between a foreign parent and its U.S. branch when internal pricing doesn’t reflect what unrelated parties would charge in comparable transactions.5Office of the Law Revision Counsel. 26 USC 482 – Allocation of Income and Deductions Among Taxpayers It covers transfers of goods, services, licensing arrangements, and cost-sharing agreements. Companies that don’t document their intercompany pricing carefully are the ones that end up with large audit adjustments.

The U.S. also applies a limited force-of-attraction rule that broadens the taxable income beyond what the PE directly earns. Under Section 864(c), once a foreign corporation has a U.S. trade or business, essentially all of its U.S.-source income is treated as effectively connected and subject to tax.6Office of the Law Revision Counsel. 26 USC 864 – Definitions and Special Rules A foreign company that sells products in the U.S. through both a local branch and direct shipments from headquarters could see the direct-shipment income pulled into the U.S. tax net as well. Most tax treaties narrow this rule to tax only profits directly attributable to the PE, but without a treaty override, the domestic statute reaches further than many foreign companies expect.

The Branch Profits Tax Layer

Foreign corporations operating through a U.S. permanent establishment face an additional layer that domestic companies never encounter: the branch profits tax. Section 884 imposes a 30% tax on the “dividend equivalent amount,” which roughly represents the after-tax profits that could theoretically be sent back to the foreign parent.7Office of the Law Revision Counsel. 26 USC 884 – Branch Profits Tax

The point is structural parity. If the foreign company had operated through a U.S. subsidiary instead of a branch, dividends paid to the foreign parent would trigger a 30% withholding tax. The branch profits tax stops the branch structure from producing a tax advantage over a subsidiary. The taxable amount equals effectively connected earnings and profits adjusted for changes in U.S. net equity; reinvesting more capital into U.S. operations reduces the tax, and pulling capital out increases it.7Office of the Law Revision Counsel. 26 USC 884 – Branch Profits Tax

A parallel branch-level interest tax applies to interest paid or allocated to the U.S. branch. Interest payments from the branch are treated as coming from a domestic corporation and subject to withholding. If the interest allocated to the branch’s effectively connected income exceeds what the branch actually paid, the excess is taxed as though a U.S. subsidiary had paid it to the foreign parent.8eCFR. 26 CFR 1.884-4 – Branch-Level Interest Tax Tax treaties can reduce or eliminate both the branch profits tax and the branch-level interest tax for qualified residents of the treaty country.

Filing Requirements and Penalties

A foreign corporation with a U.S. permanent establishment files Form 1120-F annually to report its effectively connected income, gains, losses, deductions, and credits.9Internal Revenue Service. Instructions for Form 1120-F The return is due by the 15th day of the fourth month after the tax year ends (June 15 for calendar-year filers), with a six-month extension available on request.

Missing deadlines or understating income escalates quickly.

The transfer pricing penalty has a critical procedural defense: contemporaneous documentation that justifies your pricing method. The documentation must exist at the time you file the return, not after an audit begins, and must show that the chosen method was reasonable. If the IRS requests it, you have 30 days to produce it.12Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments Companies that treat transfer pricing documentation as an afterthought rather than a filing-year obligation are the ones most exposed.

Where the Physical-Presence Model Doesn’t Reach

The traditional PE framework was built around physical presence, which leaves a gap for digital businesses that earn substantial revenue in countries where they have no office, employees, or equipment. The OECD’s Pillar One initiative aims to close that gap by reallocating taxing rights to “market jurisdictions” where customers are located, regardless of physical footprint.

Under the proposed framework, the largest multinationals, with global turnover above €20 billion and profit margins above 10%, would owe tax in any country where they earn at least €1 million in revenue. For smaller economies with GDP below €40 billion, the revenue threshold drops to €250,000.13European Parliament. Taxing the Digital Economy – New Developments and the Way Forward As of early 2025, the Multilateral Convention to implement these rules was not yet open for signature, with participating jurisdictions still working through unresolved details.14OECD. Multilateral Convention to Implement Amount A of Pillar One Companies with large digital footprints across borders should plan for nexus standards that won’t require any physical presence at all.