Whether you're building a life overseas and want to protect your US citizenship or Green Card — or you're considering renouncing altogether — one thing is certain: staying on the right side of the IRS is non-negotiable. Here's what every American living abroad needs to know.

The Basics: Income Tax Filing for Expats

US citizens and Green Card holders are required to file US tax returns on their worldwide income, regardless of where they live. Here are the key rules:

• • Catching Up on Missed Filings: If you haven't filed in several years, it's important to understand that there is technically no statute of limitations for non-filers — the clock doesn't start until a return is actually filed. That said, the IRS's practical enforcement posture, and the Streamlined Filing program (see below), generally focus on the last 3 to 6 years. If you're behind, don't wait.
• • Foreign Earned Income Exclusion (FEIE): This is the primary tool for reducing your US tax burden as an expat. For the 2025 tax year, you can exclude up to $130,000 of foreign-earned income from US taxation. For 2026, that amount is expected to be $132,900 — verify this figure with IRS guidance once officially published.
• • Foreign Tax Credit (FTC): If your foreign income exceeds the FEIE limit, or if you have passive income from foreign sources (such as interest or dividends), the Foreign Tax Credit may allow you to offset US tax owed with taxes already paid abroad.
• • Filing Deadline: Americans living outside the US receive an automatic two-month extension on the April 15th deadline, moving your due date to June 15th. Note that any taxes owed are still due by April 15th to avoid interest charges.

What Else Needs to Be Disclosed

Filing your 1040 is just the beginning. Depending on your foreign financial footprint, you may have additional reporting obligations:

• • FATCA / Form 8938: Americans are moving abroad in record numbers. With that trend has come increased IRS scrutiny of foreign financial accounts. If you hold foreign financial assets exceeding $200,000 on the last day of the tax year, or $300,000 at any point during the year (for single filers), you must file Form 8938 with your 1040. Married filing jointly thresholds are $400,000 / $600,000. The threshold drops to $50,000 / $75,000 if you reside in the US.
• • FBARs (FinCEN Form 114): For any calendar year in which the aggregate value of your foreign bank accounts exceeds $10,000 at any point, you must file a Foreign Bank Account Report (FBAR) separately through the FinCEN system. This is independent of your tax return and carries its own penalties for non-compliance.

The Streamlined Foreign Offshore Procedure

If you're behind on your US tax filings — whether you plan to remain abroad or are considering renouncing — the Streamlined Foreign Offshore Procedure is one of the most powerful tools available to get compliant with minimal penalty exposure.

• • File your most recent 3 years of delinquent tax returns and 6 years of FBARs
• • Certify under penalty of perjury that your non-compliance was non-willful — meaning it resulted from negligence, inadvertence, or a misunderstanding of the law, not deliberate evasion
• • Penalty exposure is significantly reduced under this program compared to standard IRS enforcement
• • Available to both US expats continuing to live abroad and those preparing to renounce

Important: the legal standard is 'non-willful conduct' — a specific and meaningful distinction. If your situation involves anything that could be construed as intentional concealment, speak with a qualified tax professional before filing under Streamlined.

Renouncing US Citizenship

For those who have decided that renouncing is the right path, getting your tax house in order before you walk into the embassy is essential. Here's what the process involves:

• • Get Current First: Before your consulate appointment, ensure you are fully compliant with all income tax filings and FBAR obligations. The Streamlined Procedure (above) can help if you're not.
• • Dual-Status Return: For the year you renounce, you'll file a dual-status return — a 1040 covering the portion of the year you were a US citizen, combined with a 1040NR covering the remainder.
• • Form 8854: You'll file the Initial Annual Expatriation Statement with your final return, certifying that you've met all US tax obligations for the five years prior to expatriation.
• • Exit Tax for Covered Expatriates: If your net worth exceeds approximately $2 million, or your average annual net US tax liability over the past five years exceeds the IRS threshold, you may be classified as a 'covered expatriate.' This triggers a mark-to-market exit tax, treating your worldwide assets as if sold on the day before expatriation. This is a significant financial consideration that warrants dedicated planning well before your renunciation date.