Yes, Swiss bank accounts are legal for US citizens to own. No federal law bars an American from opening or holding an account with a Swiss bank. What the law does require is disclosure: once your foreign balances cross certain thresholds, you have to report the account to the Financial Crimes Enforcement Network (FinCEN) and the IRS, and you have to pay US tax on any income the account earns. Miss those obligations and the penalties are severe, even when the account itself was perfectly lawful.
Legal to Own, But No Longer Secret
The idea that a Swiss account is inherently illicit comes from the era of the Swiss Banking Act of 1934, when it was a crime for Swiss bank employees to disclose account holder information. That framework attracted legitimate depositors and tax evaders alike, and the reputation stuck.
The picture changed after 2008, when the US Department of Justice began prosecuting Swiss banks for helping American clients hide assets. Switzerland’s oldest bank, Wegelin, pleaded guilty and shut down in 2013. Combined with the Foreign Account Tax Compliance Act (FATCA), those prosecutions pushed Switzerland toward full transparency with US tax authorities. Owning the account is still legal. Hiding it is not, and hiding it has become nearly impossible.
What Swiss Banks Tell the IRS About You
Under the FATCA agreement between the United States and Switzerland, Swiss banks automatically report information about accounts held by US persons to the Swiss Federal Tax Administration, which forwards it to the IRS.1U.S. Department of the Treasury. Agreement Between the United States of America and Switzerland to Improve International Tax Compliance and to Implement FATCA
The data shared includes your name, address, US taxpayer identification number, account number, and year-end balance. For investment accounts, the bank also reports interest, dividends, other income, and gross proceeds from asset sales during the year. For deposit accounts, it reports the total interest paid or credited. Because the IRS already has this information, anything you leave off your own filings creates an obvious mismatch.
The FBAR: Reporting the Account to FinCEN
If the combined value of all your foreign financial accounts exceeds $10,000 at any point during the calendar year, you must file FinCEN Form 114, known as the FBAR (Report of Foreign Bank and Financial Accounts).2eCFR. 31 CFR 1010.350 – Reports of Foreign Financial Accounts The threshold is aggregate, not per account. A Swiss account holding $6,000 plus a Canadian account holding $5,000 puts you over, and both must be reported.
The FBAR is filed separately from your tax return through the FinCEN BSA E-Filing System.3Internal Revenue Service. Comparison of Form 8938 and FBAR Requirements It is due April 15 following the calendar year, with an automatic extension to October 15 that you do not need to request.4Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) For each account you list the bank’s name and address, the account number, and the highest balance reached during the year.
Form 8938: Reporting the Account to the IRS
A separate requirement under 26 U.S.C. § 6038D calls for Form 8938 (Statement of Specified Foreign Financial Assets), which attaches to your Form 1040. The thresholds are higher than the FBAR’s and depend on your filing status and where you live.5Office of the Law Revision Counsel. 26 USC 6038D – Information With Respect to Foreign Financial Assets
For taxpayers living in the United States:
- Single filers must file if foreign financial assets exceed $50,000 on the last day of the year, or $75,000 at any point during the year.
- Married filing jointly: $100,000 at year-end or $150,000 at any point during the year.
For taxpayers living abroad, the thresholds are significantly higher:
- Single filers: $200,000 at year-end or $300,000 at any point during the year.
- Married filing jointly: $400,000 at year-end or $600,000 at any point during the year.
Filing one form does not excuse you from the other. Many Swiss account holders owe both an FBAR and Form 8938 in the same year.
Paying US Tax on the Income
The United States taxes citizens and residents on worldwide income, wherever it is earned or held. Interest, dividends, and capital gains from your Swiss accounts must be reported on your federal return, and you indicate that you hold foreign accounts by answering “Yes” to the foreign account question in Part III of Schedule B on Form 1040.6Internal Revenue Service. Schedule B (Form 1040)
Switzerland may withhold its own tax on certain income. To avoid double taxation, you can claim a Foreign Tax Credit under 26 U.S.C. § 901 for the amount already paid to Swiss authorities.7Office of the Law Revision Counsel. 26 USC 901 – Taxes of Foreign Countries and of Possessions of United States The credit is claimed on IRS Form 1116, and you need records showing the exact taxes Switzerland withheld.
Watch for PFICs in Swiss Investment Accounts
One of the most expensive traps for US holders of Swiss accounts involves Passive Foreign Investment Companies (PFICs). Most foreign mutual funds and many foreign-domiciled ETFs qualify. A foreign corporation is a PFIC if at least 75% of its gross income is passive (interest, dividends, capital gains) or if at least 50% of its assets produce passive income.8Internal Revenue Service. Instructions for Form 8621 Swiss-domiciled investment funds typically meet one or both tests.
The tax treatment is punitive. When you receive an “excess distribution” from a PFIC or sell PFIC shares at a gain, the IRS spreads that income across your entire holding period, taxes each year’s share at the highest individual tax rate that was in effect that year, and then charges interest as if the tax had been due each prior year. The combined effect can far exceed what you would pay on a comparable US investment. You must file a separate Form 8621 for each PFIC you own, subject to a limited exception if your total directly held PFIC stock is worth $25,000 or less ($50,000 for joint filers) at year-end and you had no excess distribution or sale that year.8Internal Revenue Service. Instructions for Form 8621 Ask your Swiss bank whether any fund it holds for you is a PFIC before you buy.
Penalties for Not Reporting
Penalties apply separately for each obligation you miss, and they add up quickly.
FBAR Penalties
Non-willful violations — where you didn’t intentionally hide the account — carry a statutory maximum of $10,000 per unreported account per year, adjusted for inflation to $16,536.9eCFR. 31 CFR 1010.821 – Penalty Adjustment and Table If you had reasonable cause for the failure and properly reported all account income, no penalty applies.10Office of the Law Revision Counsel. 31 USC 5321 – Civil Penalties
Willful violations are far worse. The penalty is the greater of $100,000 (inflation-adjusted to roughly $165,000) or 50% of the account balance at the time of the violation, per account, per year.10Office of the Law Revision Counsel. 31 USC 5321 – Civil Penalties On a $500,000 Swiss account, a willful violation could cost $250,000 for a single year.
Form 8938 Penalties
Failing to file Form 8938 triggers an initial $10,000 penalty. If the IRS notifies you and you still don’t file within 90 days, another $10,000 accrues for each additional 30-day period, up to a $50,000 continuation cap.11Internal Revenue Service. International Information Reporting Penalties
Criminal Exposure
Deliberately hiding a Swiss account to evade taxes can lead to criminal prosecution. Willful tax evasion under 26 U.S.C. § 7201 carries a fine of up to $100,000 and up to five years in prison.12Office of the Law Revision Counsel. 26 USC 7201 – Attempt to Evade or Defeat Tax A false answer to the Schedule B foreign account question can support a separate charge for a false statement on a tax return, carrying up to three years in prison.
Fixing Past Non-Filing
If you’ve fallen behind but haven’t acted willfully, the IRS offers programs to come into compliance with reduced or eliminated penalties.
Delinquent FBAR Submission Procedures
If you failed to file FBARs but reported all foreign account income and paid the tax owed, you can submit the missing FBARs without penalty through the Delinquent FBAR Submission Procedures. You cannot be under examination or criminal investigation, and the IRS must not have contacted you about the missing filings.13Internal Revenue Service. Delinquent FBAR Submission Procedures
Streamlined Filing Compliance Procedures
If you missed both the income reporting and the information returns, the Streamlined Filing Compliance Procedures offer a broader fix. You must certify that your non-compliance was non-willful, meaning it stemmed from negligence, inadvertence, or a good-faith misunderstanding.14Internal Revenue Service. U.S. Taxpayers Residing in the United States The program requires amended returns for the three most recent tax years and delinquent FBARs for the six most recent.
US-based taxpayers using the domestic version pay a one-time penalty of 5% of the highest aggregate balance of unreported foreign accounts over the six-year period.15Internal Revenue Service. Streamlined Filing Compliance Procedures for US Taxpayers Residing in the United States Frequently Asked Questions and Answers Qualifying taxpayers living abroad pay no penalty. Either path is far less costly than the standard penalties.
Actually Opening a Swiss Account as a US Person
Legal doesn’t mean easy. Many Swiss banks stopped accepting US persons after FATCA because the compliance costs outweigh the revenue from individual American depositors. Banks that still take US clients require you to sign IRS Form W-9, authorizing the bank to share your tax information with the US government.16United States Department of Justice. Two Swiss Banks Reach Resolutions Under Justice Departments Swiss Bank Program Expect thorough identity verification, proof of the legitimate source of your funds, and documentation of your US tax status. Smaller private banks and cantonal banks are more likely to decline US clients outright, while some larger institutions run dedicated programs for compliant American account holders.