The United States is one of only two countries that tax citizens on their worldwide income regardless of where they live. This citizenship‑based taxation creates ongoing filing obligations, potential double taxation, and complex exit requirements for Americans abroad, for “accidental” citizens, and for long‑term green‑card holders.
Citizenship‑based taxation
- Scope – U.S. citizens and certain U.S. persons (including green‑card holders who have held the card for at least 8 of the last 15 years) must file a U.S. federal tax return each year, reporting all income earned anywhere in the world.
- Rarity – Out of roughly 195 nations, only the United States and Eritrea tie tax liability to citizenship rather than residency. A few other jurisdictions (e.g., Hungary) have limited elements of this system, but not to the same extent.
Who is affected
| Group | Typical situation | Tax implication |
|---|---|---|
| American expatriates | Citizens who have lived abroad for years, earning foreign‑source income | Must file U.S. returns; may owe little after credits, but filing never ends. |
| Accidental Americans | Persons born in the U.S. to foreign parents who left as infants, or born abroad to at least one U.S. parent | Often unaware of U.S. citizenship; may be denied foreign bank accounts until they disclose nationality. |
| Long‑term green‑card holders | Individuals who held a green card for ≥8 of the past 15 years, even if they now reside elsewhere | Treated as U.S. persons for tax purposes unless they formally relinquish residency status through a specific exit procedure. |
Key tax provisions for expatriates
- Foreign Earned Income Exclusion (FEIE) – Shields the first $135,000 of foreign earned wages (2026 amount) from U.S. tax. The exclusion amount is indexed annually.
- Foreign Tax Credit (FTC) – Allows a dollar‑for‑dollar credit against U.S. tax for foreign income taxes paid, reducing or eliminating the U.S. liability.
- Double‑tax treaties – Agreements between the U.S. and many countries can further limit double taxation, though they do not eliminate filing requirements.
When both FEIE and FTC are applied correctly, many expatriates end up with a near‑zero U.S. tax bill, but the paperwork remains.
FATCA and banking consequences
The Foreign Account Tax Compliance Act (FATCA) obliges foreign financial institutions to report accounts held by U.S. persons to the IRS annually. Because compliance is costly, many banks:
- Close existing accounts of U.S. persons.
- Refuse to open new accounts for U.S. persons.
This can make banking abroad difficult even for high‑net‑worth individuals.
Renouncing U.S. citizenship and the exit tax
Renunciation is not a simple “cut the cord” option. The process involves:
- Second citizenship – Required before relinquishing U.S. nationality.
- Exit tax – Imposed on “covered expatriates,” defined by any of the following (2026 thresholds):
- Net worth ≥ $2 million.
- Average U.S. tax liability over the prior five years > $211,000 (tax paid, not income earned).
- Failure to certify five consecutive years of compliant U.S. filings.
The exit tax treats all assets as if sold on the day before expatriation. Gains above roughly $900,000 (2026) are taxed. Retirement accounts are deemed distributed and taxed immediately. Gifts or inheritances made after expatriation can be subject to a 40 % tax on the recipient.
The formal renunciation fee was reduced in April 2026 from about $2,500 to $450, returning to the pre‑2010 level.
Potential legislative changes
A bill titled the Residence‑Based Taxation for Americans Abroad Act (introduced by Rep. Darren Leod and later re‑drafted with Sen. Todd Young) proposes:
- Allowing qualifying Americans abroad to be treated as non‑residents for U.S. tax purposes without renouncing citizenship.
- Limiting U.S. tax to U.S.-source income (e.g., domestic rental income).
- Providing relief from FATCA and FBAR reporting.
The proposal does not eliminate U.S. estate or gift taxes on worldwide assets and has not yet passed either chamber of Congress. It remains a draft subject to amendment or possible defeat.
Practical strategies for affected individuals
- Maintain compliance – Use the IRS “streamlined” procedure to catch up on missed filings without penalties where eligible.
- Maximize exclusions and credits – Apply the FEIE, FTC, and relevant treaty benefits to reduce the U.S. tax bill.
- Choose tax‑friendly jurisdictions – Jurisdictions with territorial tax systems (e.g., Costa Rica, Uruguay, Panama, Paraguay) or favorable non‑dom regimes (e.g., Malta, Cyprus, Greece, Ireland) can lower overall tax exposure, but selection must consider residency rules and future plans.
- Plan renunciation early – If exit is contemplated, secure a second citizenship, assess net‑worth and tax‑history thresholds, and structure asset dispositions before the effective date to mitigate the exit tax.
- Monitor legislative developments – While proposals for residence‑based taxation exist, they remain uncertain; base decisions on current law and treat any reform as a potential benefit rather than a guarantee.
Understanding the U.S. citizenship‑based tax system, leveraging available relief mechanisms, and planning ahead are essential for anyone facing ongoing U.S. tax obligations while living abroad.
