Overview:
Once a U.S. structure is established, it’s important to manage day-to-day compliance, withholding obligations, and cash repatriation in a way that aligns commercial objectives and tax efficiency.
This is where many inbound investors run into trouble. Overlooked filings, employee visits, or intercompany payments can inadvertently create additional tax exposure.
This article outlines some key operational compliance considerations for inbound investors — including how to manage U.S. trade or business (USTB) risk, how to comply with withholding and reporting rules, and how to repatriate profits efficiently under U.S. and treaty frameworks.
This article summarizes considerations for entity selection, including notation of federal, treaty, and state regimes, and practical planning points.
1. Core Federal Compliance Framework
Once an inbound structure is live, foreign investors must quickly identify original and extended due dates (and filings necessary to obtain extension), and establish a compliance calendar to track federal, state, and local tax compliance obligations.
Key federal tax filings to note include:
- Form 1040-NR – For foreign individuals with U.S. income.
- Form 1120-F – For foreign corporations with U.S. income, even if limited to effectively connected income (ECI) or protective filings.
- Form 1120 – For investments held through a U.S. C corporation (or LLC taxed as a C corporation).
- Form 1065 – For investments held through a U.S. partnership (or LLC taxed as a partnership).
- Form 5472 – For U.S. entities that are at least 25% foreign-owned, reporting related-party transactions.
- Form 1042 and 1042-S – For withholding on payments to foreign persons (interest, dividends, royalties, services)
Failure to file or report properly can lead to disallowance of deductions, interest, penalties, and loss of treaty benefits.
2. Understanding U.S. Trade or Business (USTB) and Effectively Connected Income (ECI)
A foundational question for any inbound operation is whether the foreign investor itself — or one of its affiliates — has become engaged in a U.S. trade or business.
Once a USTB exists, U.S.-source income that is effectively connected with that business becomes ECI, taxable on a net basis (income minus deductions) through Form 1120-F.
A. When USTB Exposure Arises
A USTB exists where a foreign person conducts regular, substantial, and continuous commercial (profit seeking) activity in the U.S. — either directly or through dependent agents. Examples include:
- Operating or managing a U.S. branch, office, or fixed place of business.
- Having employees or dependent agents who habitually conclude contracts in the U.S.
- Providing services or technical work in the U.S. for U.S. clients.
- Participating in U.S. real property development or leasing.
In contrast, passive investment (holding stock, notes, or real estate for appreciation) generally does not create a USTB, provided contracting, management and decision-making occur offshore.
B. Treaty Overlay and Permanent Establishment (PE)
Under most U.S. income tax treaties, a nonresident is taxed on business profits only if attributable to a permanent establishment (PE) — generally a fixed place of business or a dependent agent with contracting authority. This overlay provides important protection but can be lost through day-to-day activities by foreign executives or employees.
3. Managing Executive Travel, Employee Presence, and Secondments
One of the most common ways a foreign investor unintentionally creates a USTB or PE is through foreign executives or employees performing services in the U.S.
Even short-term visits can be enough to shift the tax profile of the entire structure if those individuals perform core operational or revenue-generating functions while in the U.S
Risk scenarios include:
- Executives negotiating or signing contracts during U.S. visits.
- Technical staff providing services to U.S. customers on-site.
- Management personnel directing local operations or overseeing projects.\
These activities can create a U.S. fixed place of business or a dependent agent PE, exposing the foreign parent to U.S. net income tax, Branch Profits Tax (IRC §884), and potential treaty complications.
Mitigating Exposure Through Secondment and Intercompany Structures
Inbound groups can mitigate this risk through:
- Secondment arrangements, where the U.S. affiliate formally “borrows” employees and assumes day-to-day control, paying costs on a reimbursed (no markup) basis.
- Intercompany service agreements, where cross-border support is formalized with arm’s-length pricing and defined scope under IRC §482.
Properly structured, these arrangements can:
- Prevent the foreign parent from being viewed as conducting business directly in the U.S. or mitigate the associated amount of income.
- Preserve treaty protection by keeping activities within the U.S. entity’s control.
- Support transfer pricing compliance and deduction eligibility.
4. Withholding Obligations and Cross-Border Payments
Even when a foreign investor avoids direct USTB/ECI exposure, U.S. withholding tax applies to certain payments to foreign persons.
Key categories include:
- FDAP (Fixed, Determinable, Annual, or Periodical) Income: Interest, dividends, rents, royalties, and similar payments are subject to 30% withholding, unless reduced by treaty.
- Service Fees: Fees for services performed outside the U.S. are generally exempt, but services performed in the U.S. can become ECI.
- Dividend Equivalent Amounts (DEA): Amounts subject to the Branch Profits Tax (IRC §884) and payments under equity-linked instruments that replicate U.S. stock dividends (IRC §871(m)) can be treated as dividend equivalents and subject to withholding.
U.S. payors must report and remit these withholdings on Forms 1042 and 1042-S, other than for a DEA subject to Branch Profits Tax which is reported on Form 1120-F.
For a reporting corporation (either a 25% foreign-owned U.S. corporation or U.S. disregarded entity, or a foreign corporation engaged in a USTB), Form 5472 remains the key disclosure for any payments to related foreign parties, including royalties, management fees, or cost allocations.
5. State and Local Considerations
Inbound investors often underestimate the complexity of state-level tax exposure.
Key Concepts:
Even absent a federal USTB, a foreign company (or its U.S. affiliate) may face state income or franchise tax based on economic nexus — often triggered by as little as $100,000 of in-state sales or 100,000 in-state transactions. Some state economic nexus thresholds are more favorably based on both the amount of sales and the number of transactions in state for the year.
Some states, such as California, require multinational groups to file combined reports, which can pull in global income under:
- Worldwide combined reporting, or
- A water’s-edge election, limiting inclusion to U.S. entities and their CFCs, foreign partnerships and foreign branches.
The water’s-edge election (e.g., California Form 100-WE) can be a significant planning tool for inbound investors, reducing compliance complexity and exposure to foreign-source income inclusion.
6. Repatriation and the Branch Profits Tax
When a foreign corporation earns ECI, it faces not only regular U.S. corporate income tax but also a Branch Profits Tax (BPT) under IRC §884.
The BPT, generally at 30% (potentially treaty-reduced to between 0% and 15%), applies to deemed remittances of after-tax earnings from the U.S. branch to its foreign parent.
Conceptually, it mirrors the dividend withholding tax that would apply if operations were conducted through a U.S. subsidiary instead of a branch.
Practical planning often favors operating through a U.S. subsidiary to simplify compliance and provide clearer control over repatriation timing. Dividends, interest or royalties from a U.S. subsidiary are typically subject to withholding at 30%, potentially reduced by treaty to between 0% and 15%.
7. Practical Compliance and Strategic Takeaways
- File protective Form 1120-F returns when there’s potential USTB exposure — to preserve deductions and refund rights.
- Maintain intercompany documentation (service, cost-sharing, royalty, and loan agreements) under IRC §482.
- Review treaty applicability and PE thresholds before executives or employees travel to the U.S. Consider potential secondment or intercompany service agreements to manage as necessary. Consider documenting treaty positions in a tax-technical opinion, supporting expected rates and treatment of covered income streams or payments.
- Monitor withholding and information reporting on all cross-border payments.
- Evaluate annually: state nexus and water’s-edge election options, and state tax credits and incentives compliance and opportunities.
- Plan repatriation to manage Branch Profits Tax or dividend / interest / royalty / service fee payment withholding efficiently.
In Conclusion
Running a U.S. operation successfully requires implementing the right structure, plus ongoing attention to compliance, withholding, and cross-border activity.
Inbound investors who proactively manage USTB risk, withholding compliance, and repatriation planning can operate confidently and minimize problematic surprises from both the IRS and state tax authorities.
Thinking about investing in the U.S.? Start with a consultation to evaluate your company’s readiness and identify strategies for success. Connect with Nick Eusanio, Tax & Compliance Partner at DBL Law, to learn how proper tax planning and investment structure can help you achieve the best possible outcome.

