The short version
If you are an American living abroad with years of unfiled returns or unfiled foreign bank account reports, there is one question that sits upstream of every other decision in your case: was your failure to file non-willful, or was it willful. That single fork decides which program you belong in, which form you sign, and how large your downside can be. Non-willful conduct points to the Streamlined Filing Compliance Procedures, the on-ramp built for honest mistakes. Willful conduct points somewhere else entirely, to the IRS Voluntary Disclosure Practice, which is the path for people who knew and chose to hide.
Getting this fork right is not a formality, because you certify your answer under penalty of perjury. This article defines both terms in the IRS’s own words, explains why the choice controls everything that follows, and shows the gap in dollars between the two roads using the FBAR civil penalty as the yardstick.
What the law actually says (primary authority first)
Start with the two definitions, because the entire case turns on them.
The IRS defines the standard for the streamlined programs on its Streamlined Filing Compliance Procedures hub. Non-willful conduct is “conduct that is due to negligence, inadvertence, or mistake or conduct that is the result of a good faith misunderstanding of the requirements of the law.” That is the honest-mistake lane. The expat who never knew US citizens abroad must keep filing, the person who relied on a foreign accountant who did not handle US obligations, the taxpayer who simply misunderstood the rules, these are the fact patterns the standard is written for.
Willfulness is the other side of the line, and the IRS defines it on its Criminal Investigation Voluntary Disclosure Practice page. There, willfulness is described as the intentional, purposeful, deliberate act to hide income or assets. The key word is intent. Willfulness is not about how large the unfiled balance was or how many years went by. It is about whether the failure to comply was a choice to conceal.
The consequence of the fork is structural, and it runs straight into which program you use and which form you sign:
- If your conduct was non-willful, you use the Streamlined Filing Compliance Procedures. You certify your non-willful conduct under penalty of perjury on Form 14653 if you live abroad (the foreign track) or Form 14654 if you live in the United States (the domestic track).
- If your conduct was willful, the streamlined path is the wrong door. You belong in the IRS Voluntary Disclosure Practice, which uses Form 14457 and is the route designed for taxpayers with potential criminal exposure who want to come into compliance before the IRS finds them.
This is why the choice is so consequential, and why the warning that follows is the most important sentence in this article. The streamlined certification is signed under penalty of perjury. Certifying that your conduct was non-willful when the facts show it was willful is a false statement made under penalty of perjury. It does not make a willful case quietly disappear. It takes a problem that might have been resolved and stacks a fresh, more serious exposure on top of it. The streamlined door is built for honest mistakes, and it has to stay that way to be safe to walk through.
A practical note on how intent is judged. Willfulness is inferred from conduct and circumstances, not from a confession. The facts that point toward it are the ones that show an effort to conceal, for example moving money to stay below reporting thresholds or giving a preparer false answers. The principle matters more than any label: because intent is read from what you did, the honest, documented assessment of how your non-filing actually happened has to come first, before any form is signed.
How it works in practice
Consider two Americans abroad with what look, on the surface, like similar facts. Both are US citizens. Both have unfiled returns and unfiled FBARs going back years. Both have a foreign account that crossed the reporting threshold. The dollars on the page are close. The cases are not.
The first taxpayer moved overseas for work, set up a local salary account and a savings account, and genuinely did not know that US citizens must keep filing US returns and report foreign accounts no matter where they live. When she eventually learned the rules, she went looking for how to fix it. Her conduct fits the IRS standard for non-willful: negligence, inadvertence, or mistake, or a good faith misunderstanding of the requirements of the law. Her road is the Streamlined Filing Compliance Procedures, certifying non-willful conduct on Form 14653.
The second taxpayer knew about the filing duty, opened an account he kept off his US returns on purpose, and structured deposits to stay under reporting thresholds so the account would not draw attention. That is the intentional, purposeful, deliberate act to hide assets. For him, the streamlined certification is not available, because he cannot truthfully swear his conduct was non-willful. His road is the Voluntary Disclosure Practice and Form 14457.
The reason this fork dominates the whole case is the size of the gap behind each door, and the clearest place to see that gap is the FBAR civil penalty. For a non-willful violation, the penalty is comparatively contained, and a 2023 Supreme Court decision pulled it in further. In Bittner v. United States, 598 U.S. 274 (2023), the Court held that the non-willful FBAR penalty applies per report, not per account. In Bittner’s own case, that holding cut the exposure the government sought from 2.72 million dollars down to 50,000 dollars. The willful penalty lives on a different scale. Under 31 U.S.C. 5321(a)(5), a willful FBAR violation can be penalized at the greater of an inflation-adjusted amount or 50 percent of the balance in the account at the time of the violation. Fifty percent of the account balance, per violation, is a different universe of risk than a contained per-report figure.
So the same underlying account can sit behind a modest, capped consequence or behind a penalty measured as half the balance. What moves it from one to the other is not the size of the number. It is the answer to the willfulness question. That is the whole reason this single fork controls the case.
The numbers
| Metric | Figure | Source (year) |
|---|---|---|
| Non-willful conduct, IRS definition | “conduct that is due to negligence, inadvertence, or mistake or conduct that is the result of a good faith misunderstanding of the requirements of the law” | IRS, Streamlined Filing Compliance Procedures (2026) |
| Willful conduct, IRS definition | The intentional, purposeful, deliberate act to hide income or assets | IRS, Criminal Investigation Voluntary Disclosure Practice (2026) |
| Form for non-willful streamlined certification (abroad / in US) | Form 14653 (foreign) / Form 14654 (domestic) | IRS, Streamlined Filing Compliance Procedures (2026) |
| Form for the willful path | Form 14457 | IRS, Criminal Investigation Voluntary Disclosure Practice (2026) |
| Non-willful FBAR penalty applies | Per report, not per account | Bittner v. United States, 598 U.S. 274 (2023) |
| Non-willful FBAR exposure in Bittner | Reduced from 2.72 million to 50,000 USD | Bittner v. United States, 598 U.S. 274 (2023) |
| Willful FBAR penalty | Greater of an inflation-adjusted amount or 50 percent of the account balance | 31 U.S.C. 5321(a)(5) |
| FBAR filing threshold | Aggregate foreign accounts over 10,000 USD | FinCEN, Report of Foreign Bank and Financial Accounts (2026) |
What this means for you
A few practical points.
First, the willfulness question is not answered by how the numbers look. A large unfiled balance or a long stretch of unfiled years does not, by itself, make conduct willful, and a small balance does not make it non-willful. The standard is about intent, honest mistake on one side, a deliberate choice to hide on the other. The facts of how your non-filing actually happened are what control the answer.
Second, the certification is the moment of truth, and it is signed under penalty of perjury. The non-willful certification on Form 14653 or Form 14654 is not boilerplate you sign to enter a program. It is a sworn statement. The right sequence is to assess honestly how the non-filing happened first, then choose the door, then sign, never the reverse. If the honest answer is non-willful, the streamlined path is built for you. If the honest answer is willful, the Voluntary Disclosure Practice exists precisely so you have a route in, and using it is far better than swearing to something that is not true.
Third, choosing the wrong door does not save you, it costs you. A willful taxpayer who signs a non-willful certification has not solved the original problem and has added a false statement under penalty of perjury to it. The whole value of the streamlined program is that it is a safe, honest on-ramp, and that only holds for people whose conduct really was non-willful.
Every case turns on its own facts, and I do not promise specific outcomes. What I can do is help you read the willfulness question honestly and walk through the door that actually fits your facts.
Related reading
Companion pieces in the same Comeback cluster of The American Expat Tax Lifecycle:
- Years Behind on Filing Abroad: The Streamlined Path Most Expats Don’t Know.
- Streamlined Foreign Versus Domestic: The 330-Day Test That Decides 0 or 5 Percent.
- Behind on Taxes Abroad? Your Passport May Be on the Line.
For the underlying authorities, see the inline links above to the IRS Streamlined Filing Compliance Procedures and the Voluntary Disclosure Practice.
How Sheepdog Tax Resolution can help
I am a CPA and Certified Fraud Examiner, and this is a veteran-owned practice. If you are behind on US filings while living abroad, the first and most important question is the one this article is about: whether your conduct was non-willful or willful. That assessment decides whether the streamlined path or the Voluntary Disclosure Practice is the right route, and it has to be made honestly before any certification is signed. A straightforward case review is how that work starts.
Every case turns on its own facts, and I do not promise specific outcomes. What I offer is an honest reading of where you stand and a clear plan to get current. To start the review, reach me at noah@sheepdogtax.com.
Sources (primary authority first, then secondary commentary)
- IRS, Streamlined Filing Compliance Procedures (program hub; non-willful definition). https://www.irs.gov/individuals/international-taxpayers/streamlined-filing-compliance-procedures
- IRS, U.S. Taxpayers Residing Outside the United States (Streamlined Foreign Offshore Procedures; Form 14653). https://www.irs.gov/individuals/international-taxpayers/u-s-taxpayers-residing-outside-the-united-states
- IRS, U.S. Taxpayers Residing in the United States (Streamlined Domestic Offshore Procedures; Form 14654). https://www.irs.gov/individuals/international-taxpayers/u-s-taxpayers-residing-in-the-united-states
- IRS, Form 14653, Certification by U.S. Person Residing Outside of the United States. https://www.irs.gov/pub/irs-pdf/f14653.pdf
- IRS, Criminal Investigation Voluntary Disclosure Practice (Form 14457; willfulness definition). https://www.irs.gov/compliance/criminal-investigation/irs-criminal-investigation-voluntary-disclosure-practice
- IRS, Options Available for U.S. Taxpayers with Undisclosed Foreign Financial Assets. https://www.irs.gov/individuals/international-taxpayers/options-available-for-us-taxpayers-with-undisclosed-foreign-financial-assets
- 31 U.S.C. 5321 (FBAR civil penalties; willful penalty greater of inflation-adjusted amount or 50 percent of account balance). https://www.law.cornell.edu/uscode/text/31/5321
- Bittner v. United States, 598 U.S. 274 (2023) (non-willful FBAR penalty applies per report). https://www.supremecourt.gov/opinions/22pdf/21-1195_h3ci.pdf
- FinCEN, Report of Foreign Bank and Financial Accounts (FBAR). https://www.fincen.gov/report-foreign-bank-and-financial-accounts
Prepared by Noah Green, CPA, CFE.