Living or studying abroad often requires opening a foreign bank account, which is when many U.S. citizens run into IRS Form W-8BEN. While it might look like just another piece of bank paperwork, signing it as a U.S. citizen can lead to serious legal trouble. Here is a breakdown of what you need to know.

Who is legally allowed to sign Form W-8BEN?

The W-8BEN is strictly for individuals who are not “United States persons”. Under U.S. tax law (specifically IRC Section 7701(a)(30)(A)), every U.S. citizen is technically defined as a “United States person”. Because the form is a certificate of “Foreign Status,” a U.S. citizen who signs it is making a false statement about who they are. If you are a citizen, you should use Form W-9 instead to certify your status.

What specific crime is triggered by signing a false W-8BEN?

If a U.S. citizen signs a W-8BEN, they are technically committing felony perjury under IRC Section 7206(1). This is a criminal statute, not a civil one—meaning it’s about potential jail time and a criminal record, not just a tax fine. The law says it is a crime to “willfully” sign any document under penalty of perjury that you know isn’t 100% true. Since the form requires you to swear you aren’t a U.S. person, signing it as a citizen is a false statement “as a matter of law”.

Does the form need to be filed with the IRS to be considered a crime?

No. A common myth is that it only counts as a crime if you mail the form to the IRS. However, the law is much broader and covers “any statement… or other document”. This means that simply giving a signed, false W-8BEN to your foreign bank is enough to trigger the perjury statute.

How does the government prove a criminal violation?

To win a case, the government has to prove you acted “willfully”—meaning you knew the information was false but signed it anyway. While this can be hard to prove for someone who isn’t a tax expert, the government often argues that if you were born in the U.S. or grew up there, you should have known you were a citizen. They may use the fact that you signed right under a “penalty of perjury” statement as evidence that you knew what you were doing.

Why are U.S. citizens signing these forms if it is illegal?

Most of the time, it’s a mistake. Foreign banks often give Americans the wrong form by accident, and since U.S. tax laws (like Chapter 3 and Chapter 4/FATCA) are incredibly confusing, most people just sign whatever the bank tells them to. These forms have grown from simple one-page documents to 8+ pages of complex rules, making it very easy for a regular person to get overwhelmed and make an error.

What are the specific warnings for U.S. citizens?

Yes. The Form W-8BEN actually has big, highlighted warnings right at the top telling U.S. citizens not to sign it. There is also a specific section where you have to sign your name directly under a statement acknowledging the “penalties of perjury”. Because these warnings are so prominent, the government can argue that any citizen who signed the form ignored the clear instructions on purpose.

 

If you’re an attorney, read this post instead: https://tax-expatriation.com/w-8s-for-u-s-citizens-abroad-filing-false-information-with-non-u-s-banks/