Foreign Income and the Individual Taxpayer

Yes—the United States is one of only two countries in the world that taxes its citizens and permanent residents on their worldwide income, regardless of where they live or where the income is earned. This means a U.S. citizen living and working in another country must file a U.S. federal tax return and report all income earned abroad, including wages, self-employment income, interest, dividends, rental income, and capital gains from foreign sources. Similarly, U.S. resident aliens—including green card holders and those meeting the substantial presence test—are subject to the same worldwide income reporting obligation. The fact that foreign income may be taxed by another country does not eliminate the U.S. filing obligation, though several mechanisms exist to reduce or eliminate double taxation: the Foreign Earned Income Exclusion (FEIE), the Foreign Housing Exclusion, and the Foreign Tax Credit. Failure to report foreign income can result in substantial penalties and interest, and the IRS has significantly expanded its international enforcement efforts through FATCA and information sharing agreements with foreign tax authorities.

The Foreign Earned Income Exclusion (FEIE), claimed using IRS Form 2555, allows qualifying U.S. citizens and resident aliens living abroad to exclude a specified amount of their foreign earned income from U.S. federal taxable income—providing significant relief from double taxation for Americans working overseas. For 2025, the exclusion amount is $126,500 (indexed annually for inflation). To qualify, the taxpayer must meet two criteria: they must have foreign earned income (wages, salaries, or net self-employment income from services performed in a foreign country), and they must meet either the Bona Fide Residence Test (having established a bona fide residence in a foreign country for an uninterrupted period that includes a full tax year) or the Physical Presence Test (being physically present in a foreign country for at least 330 full days during any consecutive 12-month period). The FEIE applies only to earned income—passive income like dividends, interest, capital gains, and pension distributions are not excludable. Taxpayers may also claim a Foreign Housing Exclusion for housing costs exceeding a base amount, which can provide additional relief for those in high-cost foreign cities.

An FBAR (Report of Foreign Bank and Financial Accounts), formally designated FinCEN Form 114, is a disclosure requirement separate from the income tax return that mandates reporting of foreign financial accounts to the U.S. Treasury Department's Financial Crimes Enforcement Network. U.S. persons—including citizens, resident aliens, and certain business entities—must file an FBAR if they had a financial interest in, or signature authority over, one or more foreign financial accounts with a combined aggregate value exceeding $10,000 at any point during the calendar year. The FBAR is filed electronically through the BSA E-Filing System and is due April 15 with an automatic extension to October 15. The FBAR is not filed with the IRS and is not part of the tax return—it is a separate compliance obligation with its own distinct enforcement regime. Non-willful failure to file carries penalties of up to $10,000 per violation; willful failure can result in penalties of the greater of $100,000 or 50% of the account balance per violation, and potentially criminal prosecution. The IRS has dedicated significant enforcement resources to FBAR compliance, and the program has generated billions in collections from taxpayers with previously undisclosed foreign accounts.

The foreign tax credit (FTC), claimed on IRS Form 1116, is one of the primary mechanisms the U.S. tax system uses to prevent double taxation of income that has been taxed by both the United States and a foreign country. The credit allows U.S. taxpayers to reduce their U.S. tax liability dollar-for-dollar by the amount of income taxes paid to foreign governments on the same income. The FTC is available for foreign income taxes that are legally owed, paid or accrued, and imposed on the taxpayer's income (not on assets, transactions, or sales). The credit is subject to limitation: it cannot exceed the U.S. tax attributable to the foreign income, preventing the FTC from eliminating tax on U.S.-sourced income. Excess foreign tax credits can generally be carried back one year and forward ten years. Taxpayers may also elect to deduct foreign taxes as an itemized deduction rather than claiming the credit, though the credit is almost always more beneficial. The interaction between the FEIE and the FTC requires careful analysis—using the FEIE to exclude foreign earned income can reduce the FTC base, potentially creating an optimal planning question about which mechanism to use.

The Foreign Account Tax Compliance Act (FATCA) requires U.S. individuals with interests in specified foreign financial assets above certain thresholds to report those assets to the IRS annually on Form 8938, Statement of Specified Foreign Financial Assets, attached to their federal income tax return. Specified foreign financial assets include foreign financial accounts, foreign stocks or securities held directly, interests in foreign entities, and foreign financial instruments or contracts. The reporting thresholds vary: for taxpayers filing as single or married filing separately who live in the U.S., reporting is required if total specified foreign assets exceed $50,000 on the last day of the year or $75,000 at any point during the year (thresholds are higher for married filing jointly and for taxpayers living abroad). FATCA also established a global reporting infrastructure by requiring foreign financial institutions to identify and report accounts held by U.S. persons to the IRS, significantly expanding the IRS's access to information about offshore holdings. It is important to note that FATCA Form 8938 and FBAR requirements overlap but are distinct—both may apply to the same accounts, and filing one does not satisfy the other. Penalties for failing to file Form 8938 can reach $10,000 to $50,000 plus potential additional penalties.