Why you still have to file
The United States taxes its citizens on their worldwide income, no matter where they live. If your income is over the normal filing threshold, you have to file, even if every dollar was earned and taxed in another country.
Two tools keep most expats from being taxed twice. The Foreign Earned Income Exclusion lets you exclude foreign wages and self-employment income, up to $130,000 for 2025 and $132,900 for 2026, if you pass either the bona fide residence test or the physical presence test. The Foreign Tax Credit gives you a dollar-for-dollar credit for income tax you paid to another country.
But here's the part most people miss. Neither one is automatic. You have to file a return to claim them. If you don't file, you don't get them, and if the IRS builds a return for you, it won't give them to you either.
One more trap. The exclusion doesn't cover self-employment tax. If you're self-employed abroad, you may still owe U.S. Social Security and Medicare tax unless a treaty agreement with your country of residence says otherwise.
The forms that cause the real damage
For expats, the biggest risks usually come from the reporting forms, not the tax return itself.
If the combined balance of your foreign bank and financial accounts was over $10,000 at any point during the year, you have to file an FBAR, FinCEN Form 114. It goes to the Treasury Department separately from your tax return. It's due April 15, with an automatic extension to October 15. The penalties for not filing can be large, and they get much worse if the IRS decides the failure was willful.
You may also need Form 8938 to report foreign financial assets. For people living abroad the thresholds are higher. A single filer generally doesn't have to file unless foreign assets were over $200,000 at year end or over $300,000 at any time during the year. Married couples filing jointly have higher thresholds still.
If you own part of a foreign company, hold foreign mutual funds, or have a foreign trust or pension, there may be other forms too. Each one has its own penalty.
How to catch up
The IRS has a program built for this situation, called the Streamlined Foreign Offshore Procedures. If you qualify, you file the last three years of tax returns and the last six years of FBARs, pay any tax and interest due, and certify that your failure to file was not willful. For people who meet the requirements, the IRS doesn't impose failure-to-file penalties, failure-to-pay penalties, or FBAR penalties.
To qualify, you generally have to have been outside the United States for at least 330 full days in at least one of the last three years and not have had a U.S. home during that time. Your failure has to have been non-willful, meaning it came from negligence, a mistake, or a good-faith misunderstanding of the law.
That certification is signed under penalty of perjury, and it's the single most important document in the process. If your facts are messy, or there's any question about whether the IRS could see your conduct as willful, don't sign it until you've talked to a tax attorney. There are other paths for people who don't qualify, and choosing the wrong one can be expensive.
If you've filed all your tax returns and reported all your income, but you just missed FBARs, there's a separate procedure for delinquent FBARs that may resolve it with no penalty.
If you already owe the IRS
Living abroad doesn't stop the IRS from collecting. It can levy U.S. bank and brokerage accounts, keep future refunds, and file liens. And if your balance is more than $66,000 for 2026 and the IRS has filed a lien or levied, it can certify your debt to the State Department. For someone who lives overseas, losing a passport is a crisis.
A payment plan, hardship status, or an offer in compromise can protect you, and all of them can be handled from abroad.
This is general information, not legal advice, and every case is different. The right path depends on how many years you've missed, what you own, and why you stopped filing.
