Plus Deutsch is German for German, henceforth the explaination on why the Pennsylvania Dutch are called that when they are really German and not Dutch. The Dutch from the Netherlands also got their ethnic name derived from the German term Deutsch as well believe it or not. If you're Dutch, then you are from Denmark.
1 Deadline for filing a 2015 personal, partnership, or calendar year estates/trusts tax returns or extension.  The return or extension must be postmarked or transmitted for e-filing by Monday, April 18, 2016 (April 19 for Maine and Massachusetts residents).
October 15, 2015 2014 Federal Tax Return Last day to efile a 2014 Federal Income Tax Return for Tax Extension filers. April 15, 2018 2014 Tax Amendment You can file an Amended Return to pay taxes due anytime, but you generally have a deadline of 3 years from the original due date to claim a tax refund.