A European technology group had spent three years generating revenue from US clients. Its founders assumed that operating through a foreign parent entity was sufficient. They had not considered corporate income tax exposure, withholding tax on profit repatriation, or the risk of triggering a permanent establishment under US tax legislation. By the time they engaged counsel, a commercially attractive acquisition offer from a US buyer was on the table – with a closing deadline six weeks away.
Inbound investment structure in the United States requires careful alignment of corporate form, tax residency planning, and treaty eligibility before commercial activity begins. A Delaware LLC (a limited liability company formed under Delaware state law) is frequently the vehicle of choice, but its tax treatment depends entirely on how it is classified for US federal purposes. Addressing withholding tax, permanent establishment risk, and repatriation mechanics at the outset can preserve a significant share of investor returns that an unplanned structure would otherwise erode.
This case study outlines the approach taken, the complications encountered, and the lessons transferable to other cross-border inbound investment matters in the United States.
Client profile and the challenge they faced
The client was a mid-sized software group headquartered in a Western European civil law jurisdiction. It had entered the US market through a branch arrangement, contracting directly with US enterprise clients from its home entity. Revenue had grown steadily over two years.
Three developments converged to create urgency. First, the group's tax advisers at home identified that the US contracting activity had likely created a permanent establishment under the applicable tax treaty. Second, a US private equity buyer had expressed interest in acquiring the US business as a standalone unit. Third, the founders intended to reinvest the sale proceeds back into a new US venture – meaning that the repatriation mechanics and any withholding tax on distributions would directly affect the capital available for reinvestment.
The challenge was threefold: retroactively assess and contain the permanent establishment exposure, build a clean corporate structure for the sale, and design a holding arrangement that would minimise withholding tax on future distributions. All of this needed to happen within a compressed commercial timeline.
For clients managing tax matters in the United States with cross-border dimensions, the gap between the formal treaty position and how US tax authorities assess substance-over-form is a recurring source of exposure.
Legal strategy: structure, rationale, and key milestones
The strategy proceeded in three sequential phases, each with distinct legal objectives.
Phase one – permanent establishment triage. The team conducted a fact-pattern review to determine whether the branch activity met the threshold for a taxable permanent establishment under applicable US tax treaty provisions. The analysis focused on whether the US-based employees had authority to conclude contracts, and whether a fixed place of business had been maintained. The finding was that exposure existed, but it was containable through voluntary disclosure under the relevant federal tax compliance programme. This avoided compounding penalties while establishing a clean tax position for the buyer's due diligence team.
Phase two – corporate restructuring for the sale. A Delaware LLC was formed and elected to be treated as a corporation for US federal tax purposes. The existing contractual relationships and US-based employees were transferred into the new entity. This gave the buyer a clean acquisition target with defined tax residency and a clear corporate history. The SEC (US Securities and Exchange Commission) registration requirements were reviewed and confirmed not to apply at this transaction size, avoiding an additional regulatory layer.
Phase three – holding structure for future investment. The founders intended to retain a minority stake in the acquired entity and reinvest their sale proceeds through a new US holding vehicle. The team designed a two-tier structure: a foreign holding company in a jurisdiction with a favourable tax treaty with the United States, sitting above a Delaware LLC that would act as the operating entity. This positioned the founders to benefit from reduced withholding tax rates on dividends under the applicable treaty, subject to meeting the treaty's limitation-on-benefits conditions.
The corporate law dimensions of this structure are explored further in our overview of corporate law matters in the United States.
Complications encountered and how they were resolved
Three material complications arose during execution.
The first was the buyer's due diligence findings on the permanent establishment issue. The buyer's counsel sought an indemnity covering potential historical US corporate income tax liabilities. The voluntary disclosure filing had been made but not yet resolved at the time of signing. The parties negotiated an escrow arrangement to cover the estimated liability, with release conditions tied to the tax authority's acceptance of the disclosure. This preserved the deal timeline while protecting both sides.
The second complication concerned the limitation-on-benefits test in the applicable tax treaty. The founders' holding company did not initially satisfy the ownership and base erosion requirements that the treaty imposed as conditions for withholding tax reduction. A restructuring of the intermediate holding layer was required before distributions could be made at the reduced treaty rate. This added approximately eight weeks to the post-closing timeline.
The third issue was a commercial dispute that arose between the founders and a former US contractor who claimed an equity entitlement in the newly formed entity. The matter was referred to JAMS (Judicial Arbitration and Mediation Services) arbitration under the LLC's operating agreement, which designated JAMS as the dispute resolution forum. The AAA arbitration rules had been considered as an alternative at the drafting stage, but JAMS was ultimately preferred given the parties' profiles. The dispute was resolved before a formal US District Court filing became necessary, preserving confidentiality and avoiding litigation costs.
For clients considering comparable cross-border structures in Latin American markets, the approach documented in our investment structure case study for Brazil illustrates how similar triage and restructuring logic applies in a different civil law environment.
To discuss how a tailored inbound investment strategy could apply to your situation in the United States, contact us at info@ferrazwhitmore.com.
Three transferable lessons for cross-border inbound investment in the United States
Lesson one: tax residency and permanent establishment risk must be assessed before revenue begins. Not after. The most costly aspect of this matter was not the tax liability itself. it was the compressed timeline and the escrow requirement imposed by the buyer. A foreign business generating US revenue through employees or agents should obtain a permanent establishment analysis before the first contract is signed. Retroactive correction is possible, but it consumes negotiating capital and deal time that cannot be recovered.
Lesson two: treaty eligibility is not automatic – it requires structural compliance. Many inbound investors assume that incorporating a holding entity in a treaty jurisdiction is sufficient to access reduced withholding tax rates. The limitation-on-benefits provisions in US tax treaties impose substantive ownership, activity, and base erosion tests. These conditions must be satisfied at the time distributions are made. Designing the holding structure to meet these tests from the outset avoids costly post-closing restructuring. Engaging a lawyer in the United States with cross-border treaty experience at the planning stage is consistently the most efficient approach.
Lesson three: dispute resolution mechanics in the entity documents determine speed and cost when conflicts arise. The founder dispute in this matter was resolved efficiently because the LLC operating agreement contained a clear JAMS arbitration clause with defined procedures. Entities formed without bespoke operating agreements – or with generic boilerplate – often face ambiguity about whether arbitration or federal court litigation applies. That ambiguity delays resolution and increases cost. A law firm in the United States experienced in cross-border entity formation will insist on tailored dispute resolution provisions as a standard element of the document set.
About Ferraz & Whitmore
Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions. Our team combines Portuguese civil law expertise with English common law tradition to deliver cross-border legal solutions in tax structuring, inbound investment, and corporate formation in the United States. We have advised on inbound investment matters across both common law and civil law systems, working with founders, institutional investors, and in-house legal teams who require results-oriented counsel across multiple legal regimes. The firm's tax practice covers the full range of treaty analysis, entity structuring, and repatriation planning for clients entering or expanding in the US market. Ferraz & Whitmore is a member of leading international legal associations and participates in cross-border practice groups focused on transatlantic investment and tax matters. To explore legal options for your inbound investment structure in the United States, schedule a consultation at info@ferrazwhitmore.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.