What U.S. Citizens and Green Card Holders Should Know About Taxes When Moving Abroad
Updated: 5 days ago
Moving abroad can bring exciting personal and professional opportunities, but it can also create complex tax and reporting obligations. U.S. citizens and green card holders are generally subject to U.S. tax on their worldwide income, even while living and working in another country.
Depending on the destination country and the individual’s circumstances, income may also be subject to foreign taxes. Tax treaties, foreign tax credits, and certain exclusions may help reduce double taxation, but these provisions have specific eligibility and reporting requirements.
This guide explains key cross-border tax considerations to help U.S. citizens and green card holders understand their responsibilities and prepare for life abroad.
Worldwide Income and U.S. Tax Filing Requirements
U.S. citizens and resident aliens, including most green card holders, remain subject to U.S. tax on their worldwide income. This may include wages, self-employment income, investments, rental income, and business profits earned in the United States or abroad.
Key Tax Considerations for Americans Abroad
Form 1040: U.S. citizens and resident aliens living abroad must file an annual federal income tax return when they meet the applicable filing requirements and report income from worldwide sources.
Foreign Earned Income Exclusion: Qualifying taxpayers may exclude up to $132,900 of foreign-earned income for the 2026 tax year. Eligibility requires a foreign tax home and meeting either the bona fide residence test or physical presence test.
Foreign Tax Credit: Taxpayers may be able to claim a credit for qualifying income taxes paid to another country, helping reduce double taxation.
Self-Employment Tax: Americans working for themselves abroad may still owe U.S. Social Security and Medicare taxes. A Totalization Agreement may assign coverage to one country and help prevent the same earnings from being subject to social security taxes in both countries.
Living abroad can create additional tax returns and foreign account or asset reporting requirements. Understanding these obligations early can help prevent missed filings, penalties, and unexpected tax liabilities.
How Foreign Tax Residency Affects U.S. Taxpayers
Each country establishes its own rules for determining tax residency. Although some countries use a 183-day presence test, residency may also be based on factors such as maintaining a permanent home, employment, family connections, or other personal and economic ties. Spending fewer than 183 days in a country does not necessarily prevent someone from becoming a tax resident there.
Once a U.S. citizen or green card holder becomes a tax resident of another country, they may be required to file returns and report income there while continuing to meet their U.S. tax obligations.
Key Considerations
Some countries tax residents on worldwide income, while others use territorial or source-based systems.
An applicable income tax treaty may help determine residency and provide relief from double taxation.
Foreign tax credits or exemptions may be available, but eligibility and calculation methods vary.
Capital gains, investments, retirement accounts, and property sales may be treated differently under each country’s laws.
Individuals considered residents of both countries may need to apply treaty “tie-breaker” rules based on factors such as their permanent home, center of vital interests, and habitual residence.
Reviewing the destination country’s residency and tax rules before moving can help identify filing requirements, coordinate available tax relief, and avoid unexpected liabilities.
How U.S. Tax Treaties May Reduce Double Taxation
The United States has income tax treaties with many countries. These treaties can clarify which country may tax certain types of income, provide reduced tax rates or exemptions, and establish rules for individuals considered residents of both countries.
However, most treaties contain a “saving clause” that allows the United States to continue taxing its citizens and residents under U.S. law. Treaty benefits and exceptions vary by country and type of income.
Important forms of double-tax relief include:
Foreign Tax Credit: U.S. taxpayers may be able to claim a credit for qualifying foreign income taxes paid or accrued, reducing U.S. tax on income taxed by both countries.
Foreign Earned Income Exclusion: Qualifying individuals may exclude a limited amount of foreign-earned income. This benefit comes from U.S. tax law rather than an income tax treaty.
Treaty tie-breaker rules: When an individual is considered a resident of both countries, an applicable treaty may determine residency for treaty purposes.
Treaty-specific provisions: Certain pensions, employment income, investment income, or other payments may receive special treatment depending on the treaty.
A tax treaty does not generally eliminate a U.S. citizen’s filing obligations. Treaty positions may also require additional disclosures.
Reporting Foreign Income, Accounts and Assets
Living abroad can create information-reporting requirements in addition to the annual U.S. income tax return.
FBAR—FinCEN Form 114: Required when the combined value of reportable foreign financial accounts exceeds $10,000 at any point during the calendar year. The threshold applies to the aggregate value of the accounts, not separately to each account.
FATCA—Form 8938: Certain taxpayers must report specified foreign financial assets when their total value exceeds the applicable threshold. Thresholds vary based on filing status and whether the taxpayer lives in the United States or abroad.
Foreign retirement and investment accounts: Depending on their legal structure and investments, these accounts may trigger additional reporting requirements.
FBAR and Form 8938 are separate filings with different rules. Some accounts may need to be reported on both forms and filing one does not replace the other. Missing required reports can result in substantial penalties.
Taxation of Retirement Accounts
The cross-border treatment of retirement savings depends on U.S. law, the destination country’s laws, and any applicable income tax treaty.
U.S. Retirement Accounts While Living Abroad
The destination country may not recognize the same tax-deferred treatment the account receives in the United States.
Contributions, investment growth, or withdrawals may be taxed differently in each country.
Treaty provisions may provide relief for certain pensions or retirement distributions, but the treatment varies by country and account type.
Foreign Retirement and Savings Plans
A foreign retirement plan may not receive tax-deferred treatment under U.S. law.
Employer and employee contributions, investment growth, and distributions may have different U.S. tax consequences.
Depending on the plan’s structure and holdings, Forms 3520, 3520-A, 8621, 8938, or the FBAR may need to be considered. Exceptions may apply, so no single form is automatically required for every foreign plan.
Reviewing retirement accounts before moving can help identify reporting obligations and avoid unexpected taxation in either country.
Understanding PFIC Rules Before Investing Abroad
U.S. taxpayers living abroad should carefully evaluate foreign investments before purchasing them. Many foreign mutual funds, exchange-traded funds, and other pooled investment products may be classified as Passive Foreign Investment Companies, or PFICs, under U.S. tax law.
Why PFIC Classification Matters
PFIC ownership can create:
Complex tax calculations and reporting requirements
Ordinary-income treatment and interest charges under the default excess-distribution rules
A potential Form 8621 filing requirement for each PFIC
Additional tax preparation time and expense
Form 8621 requirements depend on the taxpayer’s ownership, transactions, elections, and applicable exceptions.
Steps to Consider Before Investing
Determine whether a foreign fund or pooled investment may qualify as a PFIC.
Review the U.S. and foreign tax treatment of the investment before purchasing it.
Consider whether available elections could improve the U.S. tax treatment.
Coordinate with a cross-border tax professional and an investment advisor familiar with the rules in both countries.
U.S.-based investments may still create tax or regulatory issues in the country of residence, so investment decisions should account for both countries’ laws rather than focusing only on PFIC status.
Business and Self-Employment Taxes
Self-employed individuals and business owners living abroad may have tax obligations in both the United States and their country of residence.
Important considerations include:
U.S. self-employment tax: U.S. self-employment tax may continue to apply unless a Totalization Agreement assigns social security coverage to the other country.
Foreign business taxes: The destination country may impose income tax, payroll tax, social insurance contributions, value-added tax, or other business taxes.
Entity reporting: Ownership of a foreign corporation, partnership, or disregarded entity may trigger additional U.S. forms and reporting requirements.
Permanent establishment: Operating a business abroad may create a taxable presence under the destination country’s laws or an applicable tax treaty.
Currency and accounting differences: Income and expenses must be translated into U.S. dollars for U.S. reporting.
Choosing an entity or business structure without considering both countries can create unnecessary tax, reporting, and administrative costs.
Estate and Gift Tax Implications
Moving abroad can also affect estate planning and lifetime gifts.
U.S. estate tax: U.S. citizens remain subject to U.S. estate tax rules on their worldwide assets, even while living abroad.
Foreign estate or inheritance taxes: The destination country may impose estate, inheritance, succession, or wealth-transfer taxes under a different system.
Lifetime gifts: Gifts made to foreign individuals may create U.S. gift tax or reporting requirements.
Non-U.S.-citizen spouses: Transfers involving a spouse who is not a U.S. citizen may be subject to different limitations and planning rules.
Foreign trusts and inheritances: Receiving or transferring assets through a foreign trust may trigger additional U.S. reporting requirements.
Coordinating an estate plan across both countries can help reduce conflicting tax treatment and ensure that wills, trusts, beneficiary designations, and ownership arrangements continue to work as intended.
Plan Before Moving Abroad
Moving abroad can affect nearly every part of your financial life, including income taxes, investments, retirement savings, business ownership, and estate planning. Available tax credits, exclusions, and treaty provisions may reduce double taxation, but they do not automatically eliminate filing or reporting requirements.
Boyd Shoker PLLC helps U.S. citizens and green card holders navigate international and cross-border tax matters. Contact our team to discuss your move and develop a tax plan based on your destination, income, assets, and long-term goals.
FAQs
1. Do U.S. citizens living abroad need to file U.S. taxes?
Yes, U.S. citizens must file U.S. tax returns, even while residing in another country, due to citizenship-based taxation.
2. How do I avoid double taxation when living abroad?
Using the Foreign Tax Credit (FTC) and the Foreign Earned Income Exclusion (FEIE) helps offset U.S. tax obligations.
3. What are PFICs, and why should I avoid them?
PFICs (Passive Foreign Investment Companies) include most foreign mutual funds and ETFs, which are subject to punitive U.S. tax treatment.
4. Do I owe U.S. estate taxes if I live abroad?
Yes, U.S. estate tax applies to worldwide assets of U.S. citizens, regardless of residency.
5. Should I consult a tax professional for cross-border taxes?
Yes, tax laws are complex, and professional guidance ensures compliance and tax efficiency.
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