Due Date for Other Foreign Tax Reporting Forms

Form 5471 ( filed if you own a foreign corporation) and Form 8865 (filed if you participate in a foreign partnership) are both due by the extended due date of your personal tax return. Forms 3520 (for foreign trusts) is also due by the extended due date of your personal tax return.  However form 3520A which is also filed for foreign trusts is due on 3/15 of each year, but can be extended using Form 7004 to September 15th following the end of the calendar year.

There are severe and punitive penalties for failing to file these forms at  at all or for filing them late.