Unless I'm mistaken, I believe the number is $10,000 over any part of the calendar year: https://www.irs.gov/Businesses/Small-Businesses-%26-Self-Employed/Repo

Unless I'm mistaken, I believe the number is $10,000 over any part of the calendar year: https://www.irs.gov/Businesses/Small-Businesses-%26-Self-Employed/Report-of-Foreign-Bank-and-Financial-Accounts-FBAR https://www.irs.gov/Businesses/Small-Businesses-%26-Self-Emp... This used to be self reported on form TD F 90-22.1, which has been superseded by the new FinCEN Form 114: https://www.treasury.gov/services/Pages/TD-F-90-22.1-Report-of-Foreign-Bank-and-Financial-Accounts.aspx https://www.treasury.gov/services/Pages/TD-F-90-22.1-Report-... Note, there may be, and likely are, additional forms to be filed, but these are the ones that I recall for reporting foreign assets. And, by the way, the whole system is bullshit. To give another example of how this hurts Americans abroad, the lack of banks willing to work with Americans means that some places it's technically illegal to obtain an apartment lease, though some sort of side deal can normally be worked out. For example, in Norway, the deposit money for an apartment must be held in a joint interest bearing account between the landlord and the tenant. This protects both parties and is generally a good idea. However, if a bank won't work with an American, these accounts become impossible. Yes, both parties can just ignore the law and that often happens, but it's another example of how these kind of banking and reporting laws hurt Americans in less known ways.