Offshore Asset Protection for US Persons: What the IRS Requires You to Report

US persons who implement offshore asset protection structures — trusts, companies, LLCs, foundations, or bank accounts — face the most extensive international tax reporting obligations in the world. The US taxes its citizens and residents on worldwide income regardless of where they live, and requires disclosure of virtually every foreign financial relationship. Non-compliance penalties are severe, often exceeding the value of the unreported assets themselves. Understanding and meeting these obligations is not optional — it is a precondition for any legitimate offshore strategy.

Who Is a "US Person"?

For reporting purposes, a US person includes:

• US citizens (including dual citizens), wherever they reside
• US permanent residents (green card holders)
• Individuals who meet the substantial presence test (183 days in the US over a three-year weighted average)
• Domestic partnerships, corporations, and trusts

Even after renouncing US citizenship, former citizens remain subject to exit tax provisions under IRC Section 877A and may be treated as US persons for certain reporting purposes during a transition period.

Reporting Obligations by Structure

Foreign Trust Reporting

Form 3520 — Annual Return to Report Transactions With Foreign Trusts

Required when a US person:

• Creates a foreign trust or transfers property to one
• Receives distributions from a foreign trust
• Is treated as the owner of a foreign trust under the grantor trust rules (IRC Sections 671-679)

Key details:

• Filing deadline: April 15 (with extensions)
• Penalty for non-filing: The greater of USD 10,000 or 35% of the gross reportable amount for each year of non-compliance
• A US person who creates a foreign trust and retains the power to revest trust assets is treated as the grantor (owner) for US tax purposes, meaning all trust income is taxable to the US person

Form 3520-A — Annual Information Return of Foreign Trust With a US Owner

Filed by the foreign trust (in practice, prepared by the US tax adviser and signed by the trustee):

• Reports the trust's income, deductions, and assets
• Must include a Foreign Grantor Trust Owner Statement (provided to each US owner)
• Penalty: USD 10,000 for each failure to file, plus 5% of the trust's gross assets for continued non-compliance

Foreign Corporation Reporting

Form 5471 — Information Return of US Persons With Respect to Certain Foreign Corporations

Required for US persons who are officers, directors, or 10%+ shareholders of a foreign corporation, or who acquire or dispose of stock in certain foreign corporations.

Filing categories:

• Category 1: US shareholder of a specified foreign corporation (SFC) — generally any foreign corporation with at least one US shareholder owning 10%+
• Category 2: US person who is an officer or director of a foreign corporation with a US person owning 10%+ stock
• Category 3: US person who acquires stock resulting in 10%+ ownership
• Category 4: US person who had control (50%+) of a foreign corporation at any time during the year
• Category 5: US shareholder of a Controlled Foreign Corporation (CFC)

Penalties:

• USD 10,000 per form per year for failure to file
• Additional USD 10,000 for each 30-day period of continued non-compliance after IRS notice (up to USD 50,000)
• Potential criminal penalties for wilful failure (IRC Section 7203)

Subpart F and GILTI: A US shareholder of a CFC must include in gross income their pro rata share of the CFC's Subpart F income (IRC Sections 951-964) and Global Intangible Low-Taxed Income (GILTI, IRC Section 951A). These provisions eliminate the deferral benefit of holding income in an offshore corporation.

Foreign Partnership Reporting

Form 8865 — Return of US Persons With Respect to Certain Foreign Partnerships

Required for US persons who:

• Control a foreign partnership (Category 1)
• Acquire, dispose of, or change their interest in a foreign partnership (Category 3)
• Contribute property to a foreign partnership (Category 4)

Penalties: USD 10,000 per form per year, plus potential reduction of foreign tax credits.

Foreign Bank Account Reporting

FBAR (FinCEN Form 114) — Report of Foreign Bank and Financial Accounts

Required if a US person has a financial interest in or signature authority over foreign financial accounts with an aggregate value exceeding USD 10,000 at any point during the year.

Key details:

• Filed electronically with FinCEN (not the IRS) by April 15 (automatic extension to October 15)
• "Financial account" includes bank accounts, securities accounts, insurance policies with cash value, and mutual fund accounts
• The USD 10,000 threshold is aggregate — if you have three accounts with balances of USD 4,000 each, you must file
• Penalties for non-wilful failure: Up to USD 12,500 per violation
• Penalties for wilful failure: The greater of USD 100,000 or 50% of the account balance at the time of the violation — per account, per year
• Criminal penalties: Wilful failure to file can result in up to 5 years imprisonment and USD 250,000 in fines

Form 8938 — Statement of Specified Foreign Financial Assets (FATCA)

Required if a US person holds specified foreign financial assets exceeding:

• Domestic filers: USD 50,000 on the last day of the year or USD 75,000 at any time during the year
• Expats: USD 200,000 on the last day of the year or USD 300,000 at any time during the year

Specified foreign financial assets include foreign bank accounts, foreign securities, interests in foreign entities, and foreign financial instruments. Form 8938 overlaps with FBAR but is filed with the tax return (not FinCEN) and has broader scope.

Penalties: USD 10,000 for failure to file, plus USD 10,000 for each 30-day period of continued failure after IRS notice (up to USD 50,000).

Foreign LLC Reporting

Form 8858 — Information Return of US Persons With Respect to Foreign Disregarded Entities

Required for US persons who own a foreign disregarded entity (e.g., a single-member foreign LLC).

Note: A foreign LLC with a single US owner is a disregarded entity for US tax purposes but is treated as a separate entity for reporting purposes. All income flows through to the owner's tax return, but the Form 8858 must still be filed.

Common Offshore Structures and Their Reporting Requirements

Cook Islands Trust + Nevis LLC (Asset Protection)

• Form 3520 (annual, US person as grantor or beneficiary)
• Form 3520-A (annual, filed by the trust)
• FBAR (if the trust has a foreign bank account exceeding USD 10,000)
• Form 8938 (if total foreign assets exceed thresholds)
• Form 8858 (for the Nevis LLC if treated as a disregarded entity)

Offshore Company (BVI IBC)

• Form 5471 (if the US person is a 10%+ shareholder)
• Subpart F / GILTI inclusion (if the company is a CFC)
• FBAR (for the company's bank account)
• Form 8938 (for the interest in the foreign corporation and its accounts)

Foreign Bank Account Only

• FBAR (if aggregate foreign accounts exceed USD 10,000)
• Form 8938 (if total foreign assets exceed thresholds)
• Income from the account (interest, dividends) reported on Schedule B of Form 1040

Voluntary Disclosure and Amnesty

US persons who have failed to file required international information returns have several remediation options:

• Streamlined Filing Compliance Procedures: For non-wilful violators. File 3 years of amended returns and 6 years of FBARs. Penalty: 5% of the highest aggregate balance of unreported foreign accounts (0% if the taxpayer resided abroad)
• Voluntary Disclosure Practice: For wilful violators. More extensive disclosure with higher penalties but protection from criminal prosecution
• Delinquent FBAR Submission Procedures: For taxpayers who have properly reported and paid all tax but failed to file FBARs. No penalties if there is reasonable cause

Key Takeaways

• US persons with offshore structures must file Forms 3520, 3520-A, 5471, 8865, 8858, 8938, and FBAR depending on the structure type — penalties for non-filing start at USD 10,000 per form per year
• FBAR penalties for wilful failure to file are the greater of USD 100,000 or 50% of the account balance — per account, per year, plus potential imprisonment
• Subpart F and GILTI provisions tax US shareholders of CFCs on the corporation's income currently, eliminating the deferral benefit of offshore corporations
• An offshore trust with a US grantor is fully transparent for US tax purposes — all income is taxable to the grantor. The asset protection benefit does not depend on tax deferral
• The Streamlined Filing Compliance Procedures offer a penalty-reduced path for non-wilful past non-compliance (5% penalty on account balances)
• Legitimate offshore asset protection for US persons is fully compliant with all reporting obligations — the protection comes from jurisdictional barriers, not secrecy