Hello, I am in a similar situation:
1. I am a student on F-1 visa, and I have stayed in the U.S. for over 8 years. I do not have U.S. citizenship or a green card. I have never worked in the U.S.
2. I have opened interest-bearing savings accounts in a bank. At that time, I filled out the W-8BEN form. The interest amount was subject to federal withholding, until I filed for W-7 and obtained an ITIN. I have then provided my ITIN to the bank and filled out the W-9 form. In January this year, I received a letter from the bank (attached), showing the total interest amount earned in 2016, and mentioning the 1099-INT form. I did not file the 1099-INT form, or any other form. To this day, I have not filed any returns with IRS, nor I have been notified by IRS that I am required to.
3. Last month, my father, a non-resident alien, sent wire transfers to my U.S. bank account totaling more than $100,000. I am not sure whether I am required to file Form 3520, or any other form. I am worried that I will incur penalties if I unknowingly fail to follow U.S. tax laws.
What should I do, regarding my bank interest issue, and the recent foreign gift?
