This is a cross-border tax planning question where the right answer depends heavily on the client's facts (country of residence, entity type, ownership percentage, tax treaties, local tax rates, etc.). The interaction between GILTI, Subpart F, FATCA, foreign tax credits, and local-country taxation can produce very different outcomes.
Here's a framework that U.S. international tax advisors typically use.
1. Identify the foreign entity
The first question is whether the client owns:
- a foreign corporation
- a foreign partnership
- a disregarded entity
- foreign branches
- trusts or foundations
- passive investments (PFICs)
Many of the difficult U.S. international tax rules (especially GILTI and Subpart F) primarily apply to Controlled Foreign Corporations (CFCs).
2. Determine whether the foreign corporation is a CFC
A foreign corporation is generally a CFC if:
- U.S. shareholders each owning at least 10% collectively own more than 50% of the vote or value.
If yes:
- Subpart F must be analyzed.
- GILTI generally must be analyzed.
- Forms 5471 become critical.
3. Subpart F analysis
Subpart F generally taxes certain categories of income immediately, even if no dividend is distributed.
Examples include:
- passive investment income
- certain related-party sales income
- related-party services income
- foreign base company income
- insurance income
Planning often focuses on:
- avoiding related-party structures that create Subpart F income
- ensuring active business exceptions apply where available
- checking high-tax exceptions
4. GILTI analysis
If the corporation is a CFC, the next question is whether GILTI applies.
Key considerations include:
- tested income
- tested losses
- qualified business asset investment (QBAI)
- foreign taxes paid
- effective foreign tax rate
Recent regulatory changes have made the calculations considerably more technical than they were initially.
5. Foreign tax credits (FTC)
The foreign tax credit is usually the primary mechanism for reducing double taxation.
Planning involves:
- proper basket classification
- expense allocation
- carryforwards
- treaty interaction
- matching foreign taxes with U.S. inclusions
For individuals, planning is more limited than for domestic corporations.
6. Section 962 election
For U.S. individuals owning CFCs, a §962 election is often one of the first planning ideas considered.
Potential advantages:
- corporate tax rates on GILTI inclusions
- potential indirect foreign tax credits
- reduced current U.S. tax
Potential disadvantages:
- later dividend taxation
- increased complexity
- state tax implications
- not always beneficial
Whether it helps depends on:
- foreign effective tax rate
- distribution policy
- country of residence
- local tax rules
7. High-tax exception
The GILTI and Subpart F high-tax exceptions can sometimes exclude income that is already taxed at a sufficiently high foreign effective rate.
Many multinational planning engagements begin with determining whether these elections produce a better overall result than accepting GILTI.
8. FATCA compliance
FATCA is primarily a reporting regime.
Common filings include:
- Form 8938
- Form 5471
- Form 8865
- Form 8858
- Form 8621 (PFIC)
- Form 3520/3520-A for certain foreign trusts
- FBAR (FinCEN Form 114), filed separately from the tax return
Reporting thresholds vary depending on whether the taxpayer lives inside or outside the United States.
9. Common structures for U.S. citizens living abroad
There is no universally "best" structure. Common approaches include:
| Situation | Common planning approach |
|---|
| Operating business | Analyze whether a CFC is appropriate versus a branch or another entity classification |
| High-tax country | Evaluate GILTI/Subpart F high-tax exceptions and foreign tax credits |
| Low-tax country | Model GILTI exposure and consider whether a §962 election improves the result |
| Investment holdings | Avoid unnecessary PFIC exposure where possible |
| Real estate | Compare direct ownership versus local entities, considering both U.S. and local tax consequences |
| Estate planning | Coordinate entity ownership with both U.S. estate tax rules and local succession laws |
10. Foreign Earned Income Exclusion (FEIE)
For individual taxpayers working abroad, it's also important to evaluate the interaction between:
- the Foreign Earned Income Exclusion (FEIE),
- the Foreign Tax Credit (FTC), and
- income from foreign corporations.
The FEIE generally applies to earned income rather than corporate earnings and may reduce the ability to claim foreign tax credits on excluded income. Modeling both approaches is often worthwhile.
11. Country-specific planning
The client's country of residence can significantly affect the outcome because:
- tax treaties differ,
- local anti-deferral rules differ,
- entity classifications differ,
- withholding taxes differ,
- foreign tax credit availability differs.
For example, planning for a U.S. citizen in the UK may differ substantially from planning for someone in the UAE, Singapore, Canada, Australia, or Germany.
Practical workflow
A typical engagement proceeds as follows:
- Identify all foreign entities and ownership percentages.
- Determine whether any are CFCs.
- Analyze Subpart F income.
- Compute GILTI exposure.
- Evaluate available foreign tax credits.
- Model a §962 election, if applicable.
- Consider high-tax exception elections.
- Review all required international information returns (Forms 5471, 8938, FBAR, etc.).
- Compare current structure with feasible alternatives to minimize worldwide tax while remaining compliant in both the U.S. and the foreign jurisdiction.
Because these rules are highly technical and frequently affected by regulatory changes, significant planning decisions—such as restructuring a foreign business or making a §962 or high-tax election—are typically modeled with a U.S. international tax professional who is also familiar with the tax laws of the client's country of residence.
