Taxes & Finance
Navigate US tax obligations abroad, FBAR, FATCA, and international banking.
American citizens and resident aliens living abroad remain subject to US federal income tax on their worldwide income, regardless of where they reside. The IRS outlines these obligations in Publication 54 (Tax Guide for U.S. Citizens and Resident Aliens Abroad), which establishes that filing thresholds for expats mirror those for stateside taxpayers, with an automatic two-month extension to June 15 for those whose tax home is outside the United States. A further extension to October 15 may be requested via Form 4868. Beyond the standard Form 1040, expats face additional reporting obligations tied to foreign financial assets. The Bank Secrecy Act requires a FinCEN Form 114 (FBAR) filing when the aggregate value of foreign financial accounts exceeds $10,000 at any point during the calendar year, while FATCA (Foreign Account Tax Compliance Act) imposes separate reporting on Form 8938 at higher thresholds detailed in IRS Publication 4261 and the Form 8938 instructions. These are informational filings, but penalties for noncompliance are substantial. To mitigate double taxation, the Internal Revenue Code offers the Foreign Earned Income Exclusion (FEIE) under IRC §911, claimed via Form 2555, and the Foreign Tax Credit (FTC) under IRC §901, claimed via Form 1116. Tax treaties, totalization agreements, and state-specific domicile rules further shape an expat's actual liability. The IRS maintains a dedicated 'International Taxpayers' resource hub and Publication 519 (U.S. Tax Guide for Aliens) for related guidance.
Key Points
- 1Form 1040 filing required for all US citizens with worldwide income above standard thresholds; automatic extension to June 15 for those abroad (IRS Publication 54).
- 2FBAR (FinCEN Form 114) required when aggregate foreign account balances exceed $10,000 at any point in the year; filed electronically via the BSA E-Filing System, due April 15 with automatic extension to October 15.
- 3Form 8938 (FATCA) required for specified foreign financial assets; thresholds for taxpayers living abroad start at $200,000 (single) / $400,000 (married filing jointly) on the last day of the year, or $300,000 / $600,000 at any point during the year.
- 4Foreign Earned Income Exclusion (FEIE) for tax year 2024 is $126,500 per qualifying individual (rising to $130,000 for tax year 2025 per Rev. Proc. 2024-40); claimed on Form 2555 with either the Bona Fide Residence or Physical Presence (330 days in any 12-month period) test.
- 5Foreign Tax Credit (Form 1116) provides a dollar-for-dollar credit for income taxes paid to a foreign country; generally preferable to FEIE in high-tax jurisdictions and does not have an income cap.
- 6Self-employed expats owe US self-employment tax (15.3% on net earnings) on Schedule SE unless covered by a Totalization Agreement with their host country (per IRS Publication 54); FEIE excludes income tax but not SE tax.
- 7Estimated quarterly tax payments (Form 1040-ES) are required when expected tax liability exceeds $1,000 after withholding and credits; due April 15, June 15, September 15, and January 15.
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Key Resources
The primary IRS guide covering filing requirements, FEIE, FTC, and special rules for Americans abroad.
Central IRS resource for US citizens abroad, foreign nationals, and cross-border tax topics.
Official portal for filing FinCEN Form 114 (Report of Foreign Bank and Financial Accounts).
Form and instructions for claiming the Foreign Earned Income Exclusion and Foreign Housing Exclusion/Deduction.
Form and instructions for claiming the Foreign Tax Credit on income taxed by a foreign country.
FATCA reporting form with thresholds and instructions for taxpayers living abroad.
Index of US bilateral income tax treaties and totalization agreements affecting expat tax liability.
Companion guide covering residency rules, dual-status taxpayers, and treaty-based positions.