If you have heard that most Americans abroad owe no US tax, that is true. IRS data shows roughly 62% of returns filed from overseas owe $0 once the Foreign Earned Income Exclusion and the Foreign Tax Credit are applied. So a fair question follows: if I owe nothing, why file at all?
Here is the part that catches people out: owing $0 and having no filing obligation are two different things. In most cases you owe nothing because you filed, not instead of filing. This page explains the difference, and the specific traps hidden inside "I owe nothing."
Do I have to file US taxes if I owe nothing?
Usually yes. US citizens and green-card holders are taxed on worldwide income and must file Form 1040 once gross income crosses the filing threshold, about $15,750 for a single filer under 65 in 2025, regardless of where they live or whether any tax is ultimately due. Net earnings from self-employment above $400 trigger a filing requirement on their own. And if you are married to a non-US spouse and file separately, the threshold is effectively $5.
Why this matters: the tools that get you to $0, the Foreign Earned Income Exclusion (FEIE) and the Foreign Tax Credit, are elective. You only get them by filing the return that claims them. Skip the return and you do not get the exclusion by default; on paper you owe US tax on the full amount.
"Filing threshold" vs "FEIE" vs "owing $0": three different tests
This is the single most common confusion, and most of the bad advice online runs the three together:
- The filing threshold decides whether you must file (gross income vs the number above).
- The FEIE and Foreign Tax Credit decide how much tax you owe once you file.
- Owing $0 is the result after those credits, on a filed return.
You can be over the filing threshold (so you must file) and still owe $0 (because the FEIE wipes out the tax). That is the normal case for expats. "I owe nothing, so I do not need to file" collapses three separate tests into one, and it is wrong.
What "I owe nothing" hides
Even when your income tax is genuinely $0, several obligations sit outside the income tax and carry their own penalties:
- FBAR (FinCEN Form 114). Required if your foreign accounts total over $10,000 at any point in the year. It is not a tax form and has nothing to do with whether you owe tax. The non-willful penalty runs up to $16,536 per year (the 2025 inflation-adjusted figure; the statutory base was $10,000).
- Form 8938 (FATCA) for specified foreign assets above the threshold, again independent of tax owed.
- Information returns such as Form 3520 and 3520-A (foreign trusts and some pensions) or Form 5471 (foreign companies you own) carry failure-to-file penalties starting at $10,000 even when no tax is due. Form 8621 (foreign mutual funds, or PFICs) has no flat-dollar penalty, but not filing it keeps your entire return open to audit indefinitely until you do.
- The statute of limitations never starts on a return you did not file. A filed return generally closes to audit after three years; an unfiled year stays open to the IRS indefinitely. "They probably will not notice" is a bet with no expiration date.
What Reddit gets wrong about this
Search this question and the most-upvoted answer is usually some version of "you owe nothing, so do not bother, 5% of zero is zero, just move on." That advice is dangerous for four concrete reasons:
- It ignores that the FEIE is forfeited if you do not file the return that elects it.
- It ignores FATCA: your foreign bank reports US account holders to the IRS, so "they will not know" is increasingly false.
- It ignores that the statute of limitations never starts on an unfiled return, so the audit window stays open with no time limit.
- It ignores information-return penalties (8938, 3520, 5471) that apply at $0 tax.
None of this is cause for panic. It just means the "I owe nothing so I will skip it" logic quietly turns a clean, penalty-free situation into an open-ended risk.
Could filing actually put money in my pocket?
Sometimes, yes. If you have US-citizen children and meet the rules, the Additional Child Tax Credit can produce a refund even in a year you owe no tax, but only if you file and do not elect the Foreign Earned Income Exclusion (for example, by using the Foreign Tax Credit instead). Some expats who assumed filing was pointless were leaving refunds unclaimed.
I am self-employed. Does "$0 income tax" mean I owe nothing?
Not necessarily. The FEIE reduces income tax. It does not reduce US self-employment tax (15.3%). If you freelance or run your own business abroad and there is no totalization agreement between the US and your country, you can owe self-employment tax even in a year your income tax is $0. That surprises a lot of digital nomads.
When might I genuinely not need to file?
To be fair: if your gross income is below the filing threshold for your status, you have no net earnings from self-employment, no FBAR or Form 8938 trigger, and no information-return obligation, you may not be required to file Form 1040 for that year. Low-income retirees and students abroad sometimes fall here. But "below the threshold" is a specific test, not a feeling, and FBAR can still apply in a year a 1040 does not.
I have been skipping returns on the "I owe nothing" assumption. Now what?
This is the most common way people end up several years behind: they assumed owing $0 meant no filing, and the unfiled years stacked up. The good news is there is a structured, penalty-free path back for non-willful filers who were abroad, the Streamlined Filing Compliance Procedures. Start here:
If you want a read on your specific situation, send us the details and our partner US expat-tax firm, Capital Tax Limited, replies by email with a scope and fee estimate.