June 30, 2016, is the deadline for filing the 2015 Form 114, Report of Foreign Bank and Financial Accounts, known as the FBAR. Not sure if you need to file? The general rule is that a return is due when you have a financial interest in, or signature authority over, foreign financial accounts if the aggregate value of those accounts exceeds $10,000 at any time during the calendar year. The requirement applies to both individuals and entities such as trusts and businesses, and you may need to file even if your foreign account produces no income.
Be aware that June 30, 2016, is a “hard” deadline. Your 2015 Form 114 must be filed electronically with the Treasury Department no later than that date. No filing extension is available for 2015 forms – even if you filed an extension for your federal income tax return.