Cross-Border Investing: Immigrant and Dual Citizenship Investment Considerations

Key Takeaways

• U.S. tax residents (green card holders and substantial presence test qualifiers) are taxed on worldwide income from all sources, regardless of where the income is earned or held.
• FBAR (FinCEN Form 114) must be filed annually if foreign financial accounts aggregate to more than $10,000 at any point during the year. FATCA (Form 8938) applies to higher thresholds of foreign financial assets.
• Immigrants can participate in 401(k) and IRA accounts on the same terms as U.S. citizens, as long as they have qualifying U.S. earned income.
• Retirement accounts from a home country (such as Canadian RRSPs or UK pension schemes) may receive different tax treatment in the U.S. depending on applicable tax treaties.
• Totalization agreements between the U.S. and approximately 30 countries eliminate dual Social Security contributions for workers temporarily working in both countries.

U.S. Tax Residency and Worldwide Income

The U.S. taxes its citizens and residents on worldwide income. Once an immigrant becomes a U.S. tax resident (by obtaining a green card or meeting the substantial presence test), all income from all sources worldwide becomes subject to U.S. income tax. This includes income from investments in the home country, rental income from foreign property, and foreign pension distributions. Foreign tax credits are available to reduce U.S. tax on income already taxed abroad, but double taxation is not always fully eliminated.

Foreign Account Reporting

FBAR (FinCEN Form 114): U.S. persons must file FBAR if the aggregate maximum value of all foreign financial accounts exceeded $10,000 at any time during the calendar year. FBAR is filed electronically with FinCEN. The deadline is April 15 with an automatic extension to October 15. Willful failure to file FBAR can result in penalties of up to the greater of $100,000 or 50% of the account balance per violation.

FATCA (Form 8938): U.S. taxpayers with specified foreign financial assets above certain thresholds ($50,000 for single filers living in the U.S.; higher thresholds apply to those living abroad) must report them on IRS Form 8938 with their federal tax return. FATCA requirements overlap with but are separate from FBAR.

U.S. Retirement Accounts for Immigrants

Immigrant investors who are U.S. tax residents can contribute to 401(k), 403(b), IRA (traditional and Roth), and HSA accounts on the same terms as U.S. citizens, as long as they have qualifying U.S. earned income. Immigration status (visa type) alone does not disqualify participation in these accounts. Some visa types that restrict employment may limit earned income and thus IRA contribution eligibility.

Foreign Retirement Accounts

Foreign pension plans and retirement savings vehicles do not automatically receive the same tax deferral in the U.S. as they do in the originating country. For example, Canadian RRSPs receive tax deferral treatment in the U.S. under the U.S.-Canada tax treaty, but UK ISAs do not receive the same treatment under U.S. tax rules. The tax treatment of specific foreign retirement vehicles depends on applicable treaties and U.S. tax rules for foreign trusts and accounts.

Social Security Totalization Agreements

The U.S. has totalization agreements with approximately 30 countries that coordinate Social Security coverage and eliminate dual contributions for workers who work temporarily in both countries. Workers covered by these agreements pay Social Security taxes to only one country at a time and may combine coverage credits from both countries to qualify for benefits. Details vary by country; the Social Security Administration maintains a list of totalization agreement countries.

Frequently Asked Questions

What is FBAR and who must file it?

FBAR (FinCEN Form 114, Report of Foreign Bank and Financial Accounts) must be filed by U.S. persons who have a financial interest in, or signature authority over, one or more foreign financial accounts if the aggregate maximum value of those accounts exceeded $10,000 at any point during the calendar year. U.S. persons include citizens, resident aliens, and certain non-resident aliens. FBAR is filed electronically with the Financial Crimes Enforcement Network (FinCEN) by April 15, with an automatic extension to October 15. Penalties for willful failure to file can be severe.

Can immigrants contribute to a U.S. IRA or 401(k)?

Immigrants who are lawful permanent residents (green card holders) or who meet the substantial presence test for U.S. residency can contribute to U.S. IRAs and 401(k) plans on the same terms as U.S. citizens, as long as they have qualifying earned income in the U.S. Non-resident aliens on certain visa types may also participate in employer-sponsored plans if their employer offers participation. IRA contribution eligibility depends on earned income, not citizenship or immigration status.

Do tax treaties affect how immigrants are taxed on investment income?

The U.S. has tax treaties with many countries that can affect withholding rates on dividends, interest, and capital gains for residents of those countries. Immigrants who become U.S. tax residents are generally taxed as U.S. persons on worldwide income regardless of treaty status, but treaty provisions may reduce withholding taxes on income from the home country. The interaction of treaty provisions with U.S. taxation of worldwide income is complex and varies by treaty and individual situation. A tax professional with international tax experience is essential for cross-border situations.