The 2026 Tax Guide for New Dual Citizens: FBAR, FATCA, and What You Owe
Congratulations on your new citizenship. Now let's talk about taxes. Here is what every new dual citizen needs to know for the 2026 tax year.
The Big Picture: US Citizenship-Based Taxation
The US is one of only two countries that taxes based on citizenship, not residency. You must file US tax returns on worldwide income regardless of where you live. Getting a second citizenship does not change this.
FBAR (FinCEN Form 114)
If you open foreign bank accounts (and you probably will), you need to know about FBAR:
- Threshold: If combined foreign account balances exceed $10,000 at ANY point during the year, you must file
- Deadline: April 15, 2026 (automatic extension to October 15)
- Penalties: Up to $16,536 per report (per form, not per account) for non-willful violations following the 2023 Supreme Court ruling in Bittner v. United States. Up to the greater of $165,353 or 50% of account balance for willful violations.
- Filed electronically via the BSA E-Filing System
FATCA (Form 8938)
FATCA has higher thresholds but covers more asset types:
- Living in the US: File if foreign assets exceed $50,000 (single) or $100,000 (joint)
- Living abroad: $200,000 (single) or $400,000 (joint)
- Covers investments, ownership interests, and financial accounts
- Penalties: $10,000 for failure to file, plus up to $50,000 for continued non-filing
New for 2026: Cryptocurrency
The 2025 tax year (filed in 2026) includes enhanced crypto reporting requirements. Foreign cryptocurrency holdings now trigger the same FBAR and FATCA reporting as traditional accounts. If you hold crypto on a foreign exchange, it counts.
The FEIE: Your Best Friend
The Foreign Earned Income Exclusion for 2025 is $130,000. If you live abroad and meet the physical presence or bona fide residence test, you can exclude this amount from US taxation. This significantly reduces double-taxation concerns.
Practical Tips
- Open foreign accounts carefully -- be aware of FBAR implications from day one
- Keep records -- document maximum account balances throughout the year
- File both FBAR and Form 8938 if applicable -- they are separate filings
- Consider a tax professional who specializes in expat taxes
- Behind on filings? The IRS Streamlined Filing Compliance Procedures offer a path to catch up with reduced penalties
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