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).
1. The deadline for filing 2014 extended corporate and partnership tax returns is Tuesday, September 15, 2015. If you took an extension to file your corporate or partnership income tax returns, the deadline is almost here. By Tuesday, you must finish and file your return or face penalties for late filing.